CN111748364A - A solid fuel spiral dry distillation machine - Google Patents

Abstract

The invention aims to provide a solid fuel spiral dry distillation machine, which comprises feeding equipment, dry distillation equipment, a fuel filter, a temperature-discharging carbon-discharging device and a curved hot blast stove, wherein the fuel filter comprises a material barrel, a fuel inlet pipe at the top of the material barrel is connected with the material outlet end of the feeding equipment, a material outlet conical pipe at the bottom of the material barrel is connected with a material inlet of the dry distillation equipment, an air output pipe is arranged on the side surface of the material barrel, the dry distillation equipment comprises a dry distillation machine barrel, two rotary sealing parts and a first hollow spiral barrel, the two rotary sealing parts are arranged on two sides of the dry distillation machine barrel, the first hollow spiral barrel comprises a first hollow spiral sheet and hot blast barrels which are sealed and welded on two sides of the first hollow spiral sheet, the first hollow spiral barrel is coaxially and rotatably arranged in the dry distillation machine barrel, the hot blast barrels at two ends of the first hollow spiral barrel extend out of, and the hot air cylinder is provided with an overflowing hole communicated with the rotary sealing element.

Description

A solid fuel spiral dry distillation machine

technical field

The invention relates to solid fuel gasification equipment, in particular to a solid fuel spiral dry distillation machine.

Background technique

Biomass is recognized as the most potential renewable energy in the world. Biogas and biomass gas are commonly used to supply gas to individuals or communities. Although the effect of biogas is good, due to the limited scope, it is difficult for biomass gas with low calorific value and low tar content to reach the standard and gradually withdraw from the market. Using biomass dry distillation technology to produce dry distillation technology, dry distillation gas, tar, biomass charcoal and wood vinegar are widely used in various fields of the national economy, which not only improves the quality of biomass gas, but also makes by-products provide very important raw materials for the chemical industry. Researchers have successively developed vertical biomass retorting devices and horizontal biomass retorting devices. Although vertical or horizontal retorting devices have different forms, they all adopt the structure of inner and outer cylinders. The inner cylinder is biomass retorting cylinder, retorting cylinder and outer cylinder. A heating chamber is formed between them. On the basis of the traditional dry distillation reactor, the vertical biomass dry distillation device creatively designs a rotary sealing device for feeding and charcoal discharge. This device reduces energy consumption, but the fuel falls naturally in the dry distillation cylinder, and the small diameter of the dry distillation cylinder causes the output At the bottom, the fuel with large diameter of the retort is not uniformly heated, and the fuel stays in the retort for a long time, which reduces the carbon production.

Horizontal biomass dry distillation device, the dry distillation cylinder is inclined 3-5° relative to the horizontal foundation, the inner circumference of the dry distillation cylinder is designed with multiple hot air pipes in parallel, the two ends of the dry distillation cylinder are designed with hot air boxes, and the rack around the dry distillation cylinder is in the drive gear. Under the action of rotating, the fuel is injected from the top of the outer cylinder of the retort auger, the retort auger is inserted into the retort through the hot air box, the fuel is sprinkled in the middle of the hot air pipe and falls into the retort chamber, and the retort and the hot air box rotate. Sealed connection, dry distillation into charcoal under the heat radiation of the hot air pipe, and fall into the charcoal machine at the bottom of the hot air box at the other end of the dry distillation machine along the design slope of the dry distillation machine. The fuel processing capacity of the dry distillation furnace is large. The shaft extends into the retorting machine cavity and is easily broken when encountering hot air, and during the thermochemical reaction of fuel in the retorting area, the amount of tar adhesion in the hot air pipe increases with time, and the amount of mechanical maintenance for equipment operation is large. Obviously, biomass dry distillation thermal cracking technology has become a major issue in biomass energy utilization.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a solid fuel spiral dry distillation machine to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A solid fuel spiral dry distillation machine, including feeding equipment and dry distillation equipment, is characterized in that: it also includes a fuel filter, a temperature unloading charcoal discharge device and a curved hot blast stove;

The fuel filter includes a barrel, the fuel inlet pipe at the top of the barrel is connected to the discharge end of the feeding equipment, and the discharge conical pipe at the bottom of the barrel is connected to the inlet of the dry distillation equipment , an air output pipe is installed on the side of the barrel.

The dry distillation equipment includes a dry distillation barrel, two rotary seals and a first hollow spiral barrel, the two rotary seals are arranged on both sides of the dry distillation barrel, and the first hollow spiral barrel includes a first hollow spiral plate and a sealing It consists of hot air cylinders welded on both sides of the first hollow helix. The first hollow helical cylinder is coaxially installed in the dry distillation cylinder. The hot air cylinders at both ends of the first hollow helical cylinder extend beyond the rotating seal. The upper part is provided with a flow hole communicating with the rotary seal, and a temperature unloading charcoal discharge device is installed at the discharge port of the dry distillation barrel;

The curved hot blast stove includes a charcoal box, and the charcoal box is provided with a heat-consuming air input pipe and a hot-air pipe for heating air, the heat-consuming air input pipe is connected with the hot-air pipe, and the heat-consuming air input pipe is output by The pipe is connected with the rotary seal on the side close to the discharge port of the retort barrel, and the hot air pipe is communicated with the rotary seal on the side near the inlet port of the retort barrel through the hot air input pipe, so that the first hollow spiral barrel is connected to the rotary seal on the side of the retort barrel. A circulating hot air system is formed between the curvilinear hot blast stoves. The bottom of the curvilinear hot blast stove is equipped with a temperature unloading and charcoal discharge device. The air outlet pipe is connected.

As a further scheme of the present invention: it also includes a heating box, a burner and a chimney are installed on the side wall of the heating box, the chimney is close to the bottom of the heating box, an igniter is installed at the top nozzle of the chimney, and the hot air input pipe Wearing in the heating box, the heat-consuming air output pipe is communicated with the hot-air input pipe, the connection position of the heat-consuming air output pipe and the hot-air input pipe is located at the front end of the heating box, and the hot-air output pipe can pass through the output branch pipe Connect to the burner.

As a further solution of the present invention: the feeding equipment includes a silo and two feeding augers, the feeding end of the feeding auger located at the front end is connected with a feeding hopper, and the discharging end of the feeding auger is connected to On the top of the silo, the feeding end of the feeding auger located at the rear end is communicated with the bottom of the silo, and the discharging end of the feeding auger is connected with the fuel inlet pipe of the fuel filter.

As a further solution of the present invention: a section of the barrel located below the fuel inlet pipe to the air output pipe is provided with a stainless steel filter screen, and two inlet holes are also provided on the side wall of the barrel, and the inlet holes are provided with There are switch door assemblies for opening or closing the orifice.

As a further solution of the present invention: the rotary seal includes a cylinder cover sealed and installed outside the retort cylinder, the cylinder cover is provided with a connecting pipe, the hot air cylinder rotates and passes through the cylinder cover, and the hot air cylinder and the cylinder cover are connected. An oil seal is provided between.

As a further solution of the present invention: the oil sealing device includes a sealing flange, an oil tank, an air bag, a rubber pad and a graphite rope, the sealing flange is fixedly sleeved on the outer periphery of the hot air cylinder, and the oil tank is assembled on one side of the sealing flange , the oil tank is designed with an oil nozzle, the oil pipe is installed at the bottom of the oil tank, the air nozzle is provided on the shoulder of the sealing flange, and the air nozzle nut is assembled at the bottom of the air nozzle. Air bag, rubber pad and graphite rope, the nozzle nut is connected with the air bag.

As a further solution of the present invention: the temperature unloading and charcoal output device includes an outer cylinder, an inner cylinder, a second hollow helical cylinder and a rotary joint, the outer cylinder and the inner cylinder are coaxially sleeved to form a water jacket, and the second hollow helical cylinder The coaxial rotation is arranged in the inner cylinder, and the rotary joint is arranged at one end of the second hollow screw cylinder. The top is provided with a charcoal feeding hopper, and the bottom of the other side of the inner cylinder is provided with a charcoal outlet pipe assembly.

As a further solution of the present invention: the rotary joint has a water passage in communication with the shaft sleeve of the second hollow spiral cylinder, and the rotary joint is equipped with a water inlet elbow, a joint water outlet pipe and a shaft sleeve water inlet pipe. The water elbow and the water passage are not communicated with each other, the joint outlet pipe is connected with the water passage, the shaft sleeve water inlet pipe is connected with the water inlet elbow, and the end of the shaft sleeve inlet pipe extends through the water passage to the shaft sleeve the inner remote.

As a further solution of the present invention: the interior of the carbon box is fixedly installed with a heating plate, the carbon box is located on the top of the heating plate to form a heating chamber, one side of the heating plate is provided with an inlet, and the top of the carbon box is provided with a side away from the inlet. For the outlet pipe, a plurality of drop baffles are fixedly installed in the heating chamber. The adjacent drop baffles are alternately provided with openings. The heating chamber forms an S-shaped flow channel through the drop baffles. The heat-consuming air input pipe is located below the heating chamber. Wear it in a heated room.

As a further solution of the present invention, an air return pipe is installed on the outlet pipe, and the air return pipe is connected with the air inlet of the first blower on the material spray pipe.

Compared with the prior art, the beneficial effects of the present invention are:

1. The solid fuel spiral dry distillation machine adopts the hollow design of the first hollow spiral barrel, so that the hot air releases heat energy from the first hollow spiral barrel, thereby improving the heating surface of the fuel, and the dry distillation effect is good. The space between the hollow spiral blades is small, and the material is heated quickly, thereby shortening the fuel retorting cycle;

2. The solid fuel spiral dry distillation machine is set by the fuel filter, so that the low-temperature air mixed in the solid fuel is pumped to the air output pipe, and at the same time, under the action of high heat at the feed port of the dry distillation equipment, the low-temperature air contained in the solid fuel is removed. The air is preheated to form high-temperature air, thereby completing the heat exchange of the air. The high-temperature air is introduced into the curved hot blast stove as a gasification medium air source through the hot gas output pipe, so as to improve the fuel or gas calorific value in the curved hot blast stove. achieve the purpose of supporting combustion;

The solid fuel spiral dry distillation machine is set through the heating box, and the hot air input pipe is inserted into the heating box, the hot air output pipe is communicated with the hot air input pipe, and the connection position of the hot air output pipe and the hot air input pipe is located in the heating box. The front end of the box, and the dry distillation gas is passed into the burner of the heating box. When the igniter shows that the flame is full and the flame is erupted, the burner is started, and the curve hot blast stove is shut down, and the air inlet and outlet of the curve hot blast stove are closed at the same time. The electric control valve on the end pipeline makes the hot air directly pass into the hot air input pipe and is heated and heated by the heating box, so that the system enters the working state of self-supply circulating heating, thereby reducing the consumption of solid fuel and improving the efficiency of energy utilization;

4. The solid fuel spiral dry distillation machine is equipped with rotary seals at both ends of the dry distillation barrel, the first hollow spiral barrel rotates and passes through the rotary seal, and the first hollow spiral barrel is connected with the rotary seal through the flow hole , and the rotary seals on both sides are respectively connected with the heating air pipes of the curved heating furnace, so that a circulating hot air system is formed between the first hollow spiral cylinder and the curved hot air furnace, so as to realize the recycling of hot air and provide dry distillation for solid fuels. High temperature air greatly reduces the cost of material dry distillation.

Description of drawings

Fig. 1 is the structural representation of solid fuel spiral dry distillation machine;

Fig. 2 is the structural representation of fuel filter;

Figure 3 is a front view of the switch door assembly;

Figure 4 is a side view of the switch door assembly;

Fig. 5 is the structural representation of dry distillation equipment;

6 is a schematic structural diagram of a rotary seal;

7 is a schematic structural diagram of an oil seal device;

Figure 8 is a schematic structural diagram of a temperature unloading charcoal output device;

Fig. 9 is the shaft assembly schematic diagram of the temperature unloading charcoal output device;

Fig. 10 is the assembly schematic diagram of the rotary joint in the temperature unloading charcoal output device;

Fig. 11 is the structural representation of the charcoal pipe assembly;

Fig. 12 is the structural representation of the curve hot blast stove;

Figure 13 is a process flow diagram of dry distillation;

In the figure: feeding equipment 100, feeding auger 110, silo 120; DCS electric control cabinet 200; power equipment 300, bearing seat 310, first shaft 311, shaft sleeve 312;

Pipe fittings 400, hot gas output pipe 410, first blower 411, return gas pipe 412, output branch pipe 413, hot air input pipe 420, gas output pipe 430, gas branch pipe 431, and heat-consuming air output pipe 440;

Fuel filter 500, barrel 520, inlet hole 521, discharge tapered pipe 522, inclined plate 523, fuel inlet pipe 524, air output pipe 525, electric valve plate 526, puller 530, stainless steel filter 540, Triangular reinforcement ring 550, second blower 560, material level gauge 570, belt steel ring 580;

Opening and closing door assembly 510, door cover 511, folded ear plate 512, wing nut 513, U-shaped groove 514, pressure plate 515, hand wheel 516, lower hexagonal bolt 517, fixed lug plate 518, upper hexagonal bolt 519;

Dry distillation equipment 600, condensate tank 610, dry distillation barrel 630, legs 640, first hollow spiral 650;

Rotary seal 620, cylinder cover 621, connecting pipe 622, operating cylinder 623, oil sealing device 624, sealing flange 6241, air nozzle 6242, fuel tank 6243, air bag 6244, rubber pad 6245, graphite rope 6246, gland 625, reinforcement Cylinder 626, sealing ring 627, hot air cylinder 628, overflow hole 629;

Temperature discharge and charcoal discharge device 700, outer cylinder 710, inner cylinder 720, charcoal inlet hopper 721, first blind plate 722, shaft sleeve 730, second shaft 731, bearing gland 732, thrust ball bearing 733, circular plate 734, U-shaped bearing gland 735, gasket 736, gear 737, second blind plate 738, water jacket 740, outer cylinder water inlet pipe 741, outer cylinder water outlet pipe 742, shaft sleeve water inlet pipe 750, carbon outlet pipe assembly 760, Upper conical pipe 761, lower conical pipe 762, closing fan 763, straight pipe 764, discharge pipe 765, rotary joint 770, water inlet elbow 771, joint water outlet pipe 772, second hollow spiral 780;

Curved hot blast stove 800, bracket 810, charcoal box 820, return air box 821, heat consumption air box 822, hot air box 823, heat consumption air input pipe 830, hot air pipe 840, hopper 850, feeding auger 860, blanking pipe 861, spray Material pipe 862, heating chamber 870, inlet 871, outlet pipe 872, drop partition 873, heating plate 874;

Heating box 900 , chimney 910 , igniter 911 , burner 920 .

Detailed ways

In order to describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following detailed description is given in conjunction with specific embodiments and accompanying drawings.

Please refer to FIG. 1 , in this embodiment, a solid fuel spiral dry distillation machine includes a feeding device 100, a fuel filter 500, a dry distillation device 600, a temperature unloading and charcoal output device 700, and a curved hot blast stove 800, which are used to connect the above equipment. And form the pipe fitting 400 of the air flow passage and the DCS electric control cabinet 200 used to control the operation of the above equipment, wherein the feeding equipment 100 is used for solid fuel (such as agricultural and forestry crop straw, new firewood scraps, shale sludge, etc.) Sealing and feeding; the fuel filter 500 is used to heat replace the air mixed in the solid fuel fed by the feeding device 100, and send the replaced air to the curved hot blast stove 800 to increase the calorific value of the fuel or gas, In addition, the fuel filter 500 sends the solid fuel after air heat exchange into the dry distillation equipment 600; the dry distillation equipment 600 is used for high temperature solid fuel after the air heat exchange through the fuel filter 500 Dry distillation, the solid fuel is carbonized and cracked in a high temperature and oxygen-free environment to form biomass charcoal, dry distillation gas, tar and other by-products; the unloading charcoal device 700 cools down and discharges the biomass char produced by the dry distillation equipment 600; curve hot air The furnace 800 is used to generate high-temperature airflow to provide a high-temperature heat source for the dry distillation equipment 600; the pipe fitting 400 includes a hot gas output pipe 410 for passing the heat-exchanged air in the fuel filter 500 into the curved hot blast stove 800, and a hot gas output pipe 410 in the curved hot blast stove 800. High-temperature air is input to the hot air input pipe 420 in the dry distillation equipment 600, and the heat consumption air after the heat energy is released in the dry distillation equipment 600 is sent back to the hot air output pipe 440 and other branch pipes for heating in the curved hot blast furnace 800. Equipped with electric control valve.

The solid fuel spiral dry distillation machine also includes a heating box 900, a burner 920 and a chimney 910 are installed on the side wall of the heating box 900, the chimney 910 is close to the bottom of the heating box 900, and an igniter 911 is installed at the top nozzle of the chimney 910, The hot air input pipe 420 is inserted in the heating box 900 , and the hot air output pipe 440 communicates with the hot air input pipe 420 .

The gas generated by the dry distillation equipment 600 is passed into the heating box 900, and the igniter 911 is used to detect the amount of gas in the heating box 900. When the igniter 911 shows that the flame is full and erupting flame, the burner 920 is started, and the curve hot air is turned off At the same time, close the electric control valves on the inlet and outlet pipes of the curved hot blast stove 800, so that the hot air is directly passed into the hot air input pipe 420 and heated by the heating box 900, so that the system enters a self-powered cycle. Heating the working state, thereby reducing the consumption of solid fuel and improving the efficiency of energy utilization.

The hot gas output pipe 410 can be connected to the burner 920 through the output branch pipe 413 , so as to change the flow direction of the hot air, so that the hot air is passed into the heating box 900 to increase the heating value of the gas in the heating box 900 .

In this embodiment, the feeding device 100 includes a silo 120 and two feeding augers 110. The feeding end of the feeding auger 110 at the front end is connected with a feeding hopper, and the feeding auger 110 discharges the material. The feeding end is connected to the top of the silo 120, and is then used to transport the solid fuel in the upper hopper to the silo 120. The feeding end of the feeding auger 110 at the rear end communicates with the bottom of the silo 120. The feeding auger 110 The discharge end of the silo 120 is connected to the fuel filter 500, and is then used to transport the solid fuel in the silo 120 to the fuel filter 500. It should be reminded that the silo 120, the feeding auger 110 and the fuel filter The device 500 forms a closed feeding environment, thereby realizing sealed feeding, which has the advantage of reducing the content of air or oxygen contained in the solid fuel, which is beneficial to provide a more favorable oxygen-free environment for dry distillation operations.

Referring to FIG. 2 , in this embodiment, the fuel filter 500 includes a barrel 520 for storing solid fuel. The fuel inlet pipe 524 at the top of the barrel 520 is connected to the discharge end of the feeding auger 110 at the rear end. The bottom of the cylinder 520 is provided with a discharge conical pipe 522 connected to the dry distillation equipment 600, and the solid fuel is fed into the dry distillation equipment 600 through the discharge conical pipe 522. The side wall is provided with an air output pipe 525 that communicates with its inner cavity. The air output pipe 525 is provided with a second blower 560. The air output pipe 525 is connected with the hot air output pipe 410, and the second blower 560 is used to generate air in the barrel 520. Negative pressure, during the feeding process of solid fuel, the mixed low-temperature air is pumped to the air output pipe 525 under the action of negative pressure. The heat forms high-temperature air, thereby completing the heat exchange of the air. The high-temperature air is introduced into the curved hot blast stove 800 through the hot gas output pipe 410 as a gasification medium air source, so as to increase the calorific value of the fuel or gas in the curved hot blast stove 800, To achieve the purpose of supporting combustion, at the same time, the air in the solid fuel is extracted to provide an oxygen-free environment for the dry distillation operation. The fuel filter 500 has a novel design, a reasonable structure, low cost, and can run continuously without failure, and is suitable for the fuel of large dry distillation machines. Filtration work.

A stainless steel filter screen 540 is provided in the barrel 520 from the fuel inlet pipe 524 to the air output pipe 525. The fuel plays a blocking role. The stainless steel filter screen 540 can be but is not limited to a cylindrical shape. The specific installation method of the stainless steel filter screen 540 is that the inner top of the barrel 520 is fixedly installed with a steel ring 580, and the inner ring of the barrel 520 is fixed. A triangular reinforcing ring 550 is annularly arranged on the wall and below the air output pipe 525 , and the stainless steel filter screen 540 is fixedly installed between the steel ring 580 and the triangular reinforcing ring 550 .

The fuel inlet pipe 524 is provided with an electric valve plate 526 for controlling unloading; in order to facilitate quantitative discharge, a material puller 530 is provided at the upper opening of the discharge conical pipe 522 .

The inside of the barrel 520 has a sloping plate 523 inclined from the inner ring wall toward the discharge conical pipe 522 .

The side wall of the barrel 520 is also provided with two inlet holes 521 . The inlet holes 521 are provided with an opening and closing door assembly 510 for opening or closing the orifice. The inlet holes 521 and the opening and closing door assembly 510 allow the fuel to flow in the barrel 520 Drop provides convenience.

The upper end side of the cartridge 520 is equipped with a material level gauge 570 , and the material level gauge 570 is used to detect the fuel reserve amount in the cartridge 520 .

Referring to FIG. 3 and FIG. 4 , which are a front view of the door switch assembly 510 and a side view of the door switch assembly 510, respectively, in this embodiment, the door switch assembly 510 includes a door cover 511 for blocking the opening, for pressing The pressure plate 515 of the door cover 511 and the fixed ear plate 518 symmetrically and fixedly installed outside the orifice or the nozzle, a graphite gasket groove is opened on one side of the door cover 511, and the graphite gasket groove is equipped with a graphite gasket, and the graphite gasket is used to seal the increase. In order to improve the sealing strength, the fixed lug plate 518 is in a folded shape, and the folded end of the fixed lug plate 518 extends out of the front end of the orifice or the nozzle. At the folded end, in order to facilitate the installation and disassembly of the lower hexagonal bolt 517, the lower hexagonal bolt 517 is threadedly connected with a wing nut 513, and the other end of the pressing plate 515 is provided with a locking device, which is used to lock the pressing plate 515 The opening and closing ends are locked at the orifice or nozzle.

In this embodiment, specifically, the locking device includes an upper hexagon bolt 519 and a wing nut 513 , the wing nut 513 is threadedly connected with the upper hexagon bolt 519 , and the upper hexagon bolt 519 is arranged at the orifice, on the pressure plate 515 . There is a through hole for the upper hexagonal bolt 519 to pass through. The hole diameter of the through hole is the same as the outer diameter of the upper hexagonal bolt 519 but smaller than the outer diameter of the wing nut 513. When locking the pressure plate 515, pass the hexagonal bolt through The pressing plate 515 is perforated, and the wing nut 513 is threadedly connected to the penetrating end of the hexagonal bolt and tightened, so that the wing nut 513 is pressed against the pressing plate 515 .

In order to prevent the loss of the upper hexagon bolt 519 and its matching wing nut 513, a folding ear plate 512 is also included. The folding ear plate 512 is fixedly installed on the orifice or the nozzle, and the upper hexagonal bolt 519 rotates with the folding ear plate 512 For connection, the pressing plate 515 is provided with a U-shaped groove 514 for rotating the upper hexagonal bolt 519 , and the through hole is the groove bottom of the U-shaped groove 514 . When in use, press the pressure plate 515 with the door cover 511 to the hole or the nozzle, turn the upper hexagon bolt 519 from the U-shaped groove 514 to the bottom of the groove, and then tighten the wing nut 513. It is set so that the upper hexagon bolt 519 and its matching wing nut 513 can be hung on the folded ear plate 512 in a non-locked state, so as to facilitate its placement and prevent loss.

In this embodiment, preferably, in order to further improve the pressing effect, the handwheel 516 threadedly connected at the middle and inner part of the pressing plate 515, the screw on the handwheel 516 can be pressed against the door cover 511 to ensure continuous operation. Fluid equipment is leak-free.

Referring to FIG. 5 , in this embodiment, the dry distillation apparatus 600 includes a dry distillation barrel 630 , a rotary seal 620 , a first hollow spiral cylinder, and a power device 300 , and the bottom of the dry distillation barrel 630 is provided with a dry distillation barrel 630 for supporting the dry distillation barrel 630 The supporting leg 640 of the dry distillation barrel 630 has a feed inlet connected to the discharge conical pipe 522 of the fuel filter 500 at the top of one side, and the bottom of the dry distillation barrel 630 is provided with a temperature unloading and charcoal output device 700 at the bottom. The connected discharge port, the top of the dry distillation barrel 630 near the discharge port is installed with a gas output pipe 430 for outputting dry distillation gas, and the gas output pipe 430 is connected to the burner 920 for dry distillation of solid fuel. into the heating box 900 to provide energy for the heating box 900 . A gas branch pipe 431 is also installed on the gas output pipe 430, and the gas branch pipe 431 provides gas to other gas consuming equipment.

The first hollow helical cylinder includes a first hollow helical sheet 650 and a hot air cylinder 628 sealed and welded on both sides of the first hollow helical sheet 650. The first hollow helical cylinder is coaxially installed in the dry distillation cylinder 630. The hot air cylinders 628 at both ends of the helical cylinder extend to the outside of the dry distillation cylinder 630, and the first hollow helical cylinder pushes the solid fuel from the inlet to the outlet during the rotation.

The power equipment 300 includes a reducer and two bearing seats 310 , a first shaft 311 is fixedly installed at the end of the hot air cylinder 628 , a shaft sleeve 312 is assembled between the first shaft 311 and the hot air cylinder 628 , and the first shaft 311 It is rotatably mounted on the bearing seat 310, and the speed reducer is connected with the first shaft 311 in a driving manner to drive the first hollow helical cylinder to rotate.

The rotary seals 620 are arranged at both ends of the dry distillation cylinder 630, and their function is to enable the first hollow spiral cylinder to input hot air into it and output the hot air in a rotating state, and the air fluid is free during the conveying process. Give way.

Referring to FIG. 6 , the rotary seal 620 includes a cylinder cover 621 sealed and installed outside the retort cylinder 630 . The cylinder cover 621 is provided with a connecting pipe for supplying the hot air into the cylinder cover 621 or for supplying the consumed hot air from the cylinder cover 621 . 622 , the hot air cylinder 628 is rotated and penetrated outside the cylinder cover 621 , and the side wall of the hot air cylinder 628 is provided with a flow hole 629 which communicates with the inner cavity of the cylinder cover 621 . The connecting pipe 622 on the rotary seal 620 on the side close to the feed port is connected to the hot air input pipe 420, and the connecting pipe 622 on the rotary seal 620 on the side close to the discharge port is connected with the hot air output pipe 440, thereby making the first A circulating hot air system is formed between a hollow spiral cylinder and the curved hot blast stove 800, which provides dry distillation high temperature air for the solid fuel.

In this embodiment, preferably, in order to improve the sealing performance and rotational stability between the hot air cylinder 628 and the dry distillation cylinder 630, the end of the dry distillation cylinder 630 is coaxially provided with a reinforcing cylinder 626 extending outward to strengthen the A pressure cover 625 is connected to the outside of the cylinder 626 through a flange, the hot air cylinder 628 is rotated and passed through the reinforcing cylinder 626 , and a sealing ring 627 is provided between the reinforcing cylinder 626 and the hot air cylinder 628 .

In this embodiment, preferably, in order to improve the sealing between the hot air cylinder 628 and the cylinder cover 621, an operation cylinder 623 extending outward is coaxially provided at the end of the cylinder cover 621, and the outside of the operation cylinder 623 is fixedly installed There is an oil sealing device 624 , and the hot air cylinder 628 rotates out of the operating cylinder 623 and is connected in a sealed rotation through the oil sealing device 624 .

Referring to FIG. 7 , in this embodiment, the oil sealing device 624 specifically includes a sealing flange 6241, an oil tank 6243, an air bag 6244, a rubber pad 6245 and a graphite rope 6246, and the sealing flange 6241 is fixedly sleeved on the hot air cylinder On the outer circumference of 628, the oil tank 6243 is assembled on one side of the sealing flange 6241, the oil tank 6243 is designed with a nozzle, the bottom of the oil tank 6243 is installed with an oil pipe, the shoulder of the sealing flange 6241 is provided with an air nozzle 6242, and the bottom of the air nozzle 6242 is equipped with an air nozzle. Nozzle nut, the inner ring wall of the sealing flange 6241 is circumferentially sleeved with an air bag 6244, a rubber pad 6245 and a graphite rope 6246 in sequence from the outside to the inside, and the air nozzle nut is connected to the air bag 6244. The sealing flange 6241, the oil tank 6243, the oil nozzle, the oil pipe, the air nozzle 6242, the air nozzle nut, the air bag 6244, the rubber gasket 6245 and the graphite rope 6246 provide conditions for the rotary seal. The oil in the oil tank 6243 is continuously injected into the sealing flange 6241 and the The rotating friction surface between the hot air cylinders 628 moistens the graphite rope 6246, thereby improving the operation and sealing effect. The air nozzle 6242 is equipped with an air compressor, and the air compressor provides an air source for the rotary sealing of the equipment.

Through the setting of the rotary seal 620, the contact surfaces of the retort barrel 630 and the barrel cover 621 in the fixed state and the hot air drum 628 in the rotating state are sealed and rotated, so as to ensure the sealed input and output of hot air and heat-consuming air, and improve the rotation of the equipment. Air tightness, and can adjust the air pressure sent by the air compressor into the air nozzle 6242 according to the sealing accuracy, and has strong flexibility.

In this embodiment, the bottom of the cylinder cover 621 is equipped with a condensing water tank 610, and the condensing water tank 610 is connected with a sewage pool. The sewage is collected and discharged.

During the dry distillation process, the solid fuel is instantly volatilized by the heat energy released by the first hollow spiral cylinder to complete the drying process and enter the dry distillation process. The fuel entering the dry distillation process produces tar in the hot air environment, and the macromolecular bonds of the biomass are gradually broken to form biomass. The carbon enters the oxidation process. The hot air in the oxidation area exceeds 1000 °C, and the tar in the gas is converted into permanent gas molecules in the hot air > 950 °C and enters the reduction layer together with the gas to generate flammable gases dominated by CO, H2, and CH4. , the biomass char is discharged from the discharge port to the temperature unloading charcoal discharge device 700 for charcoal discharge, and the generated gas is discharged from the gas output pipe 430 .

Through the design of the first hollow helical cylinder, the hot air releases heat energy from the first hollow helical cylinder, thereby increasing the heating surface of the fuel, and the dry distillation effect is good. The material is heated quickly, thereby shortening the fuel retorting cycle.

Referring to FIG. 8 , in this embodiment, the temperature unloading and charcoal output device 700 includes an outer cylinder 710 , an inner cylinder 720 , a second hollow spiral cylinder and a rotary joint 770 , the outer cylinder 710 and the inner cylinder 720 are coaxially sleeved, and the outer cylinder 710 is A first blind plate 722 is fixedly installed at both ends through flanges, and a circular plate 734 is fixedly installed between the outer cylinder 710 and the inner cylinder 720 and at both ends. The outer cylinder 710, the inner cylinder 720 and the circular plates 734 at both ends The water jacket 740 is formed together. The top of one side of the inner cylinder 720 is provided with a charcoal inlet hopper 721, and the bottom of the other side of the inner cylinder 720 is provided with a charcoal outlet pipe assembly 760. The charcoal inlet hopper 721 and the charcoal outlet pipe assembly 760 are both The seal penetrates out of the outer cylinder 710, and the outer cylinder 710 is provided with an outer cylinder water inlet pipe 741 and an outer cylinder water outlet pipe 742 respectively, so that the cooling water enters the water jacket 740 from the outer cylinder water inlet pipe 741 and flows from the outer cylinder. The cylinder outlet pipe 742 is discharged, the second hollow helical cylinder is coaxially arranged in the inner cylinder 720, the rotary joint 770 is arranged at one end of the second hollow helical cylinder, and a cooling water supply is formed between the second hollow helical cylinder and the rotary joint 770. Circulating waterway with side entry and exit.

The biomass char produced by dry distillation enters the inner cylinder 720 from the charcoal inlet hopper 721, the second hollow spiral cylinder rotates and the carbon material is pushed from the charcoal inlet hopper 721 to the direction of the charcoal outlet pipe assembly 760, and the cooling water is respectively in the water jacket 740. , The second hollow helical cylinder circulates and flows, and a double-layer cooling water flow channel is formed inside and outside the inner cylinder 720 to increase the cooling contact area of the carbon material, so that the carbon material is cooled in the process of advancing, and the cooling effect is greatly improved. .

Referring to FIGS. 9 and 10 , the rotational installation method of the second hollow helical cylinder is as follows: the second hollow helical cylinder includes a hollow shaft sleeve 730 and a second hollow helix axially arranged on the shaft sleeve 730 Sheet 780, a plurality of second hollow helical sheets 780 are equally spaced in the axial direction, both ends of the shaft sleeve 730 are coaxially fixed with a second shaft 731, and the second shaft 731 rotates and passes through the first blind plate In addition to 722, the outside of the first blind plates 722 on both sides are respectively fixed with bearing glands 732 and U-shaped bearing glands 735. The bearing glands 732, U-shaped bearing glands 735 and the corresponding side of the second shaft 731 There is a thrust ball bearing 733 therebetween. It should be reminded that the distance between the outer circumference of the second hollow helical sheet 780 and the inner wall of the inner cylinder 720 is not more than 10 mm, otherwise, the biomass char will be crushed by the helical sheet.

Wherein, two second blind plates 738 are fixedly installed on the outside of the U-shaped bearing gland 735 , and the second shaft 731 on the side close to the U-shaped bearing gland 735 passes through the two second blind plates 738 . A gear 737 is fixedly installed on the outer peripheral side of the two shafts 731 , and the gear 737 is located between the two second blind plates 738 .

In order to improve the sealing performance of the assembly, a sealing gasket 736 is tensioned between the second blind plate 738 and the U-shaped bearing press cover 735 .

The rotary joint 770 has a water passage in communication with the shaft sleeve 730. The rotary joint 770 is equipped with a water inlet elbow 771, a joint outlet pipe 772 and a shaft sleeve water inlet pipe 750. The water inlet elbow 771 is connected to the water flow. The pipes are not connected to each other, the joint water outlet pipe 772 is connected with the water passage, the shaft sleeve water inlet pipe 750 is connected with the water inlet elbow 771, and the end of the shaft sleeve water inlet pipe 750 extends through the water passage to the end of the shaft sleeve 730. Internal remote. The cooling water is passed through the water inlet elbow 771, and is transported into the shaft sleeve 730 by the shaft sleeve water inlet pipe 750 through the water passage. 772 is discharged to form a circulating water path, so that cooling water circulates in the second hollow spiral cylinder, and the carbon material is cooled from the inside.

Referring to FIG. 11, the charcoal outlet pipe assembly 760 includes an upper conical pipe 761, a lower conical pipe 762, a straight pipe 764 and a discharging pipe 765 distributed from top to bottom, wherein the upper conical pipe 761 is connected with all the The conical bottoms of the lower conical pipes 762 are connected to each other, and the diameter of the broken pipe changes from small to large, and then from large to small. A fan 763 is installed between the straight pipe 764 and the discharge pipe 765, thereby eliminating the need for The inflow of external air into the dry distillation machine affects the quality of dry distillation gas.

Referring to FIG. 12, the curved hot blast stove 800 includes a carbon box 820, a heat-consuming air input pipe 830, a hot air pipe 840, an ignition device (not shown in the figure), a material injection pipe 862 and a feeding device. The carbon box 820 The bottom of the carbon box 820 is fixedly installed with a bracket 810, the bottom discharge port of the carbon box 820 is equipped with a temperature unloading carbon discharge device 700, a material injection pipe 862 is fixedly installed on the side wall of the carbon box 820, and the feeding device is assembled on the material injection pipe 862, The spray pipe 862 is connected to the hot gas output pipe 410 through the first blower 411, and the first blower 411 sucks the high-temperature gasification medium air source generated in the fuel filter 500 into the hot gas input pipe through the first blower 411 to the spray material. In the pipe 862, the feeding device sends the solid fuel and air into the injection pipe 862, and the gasification medium air source is sprayed into the carbon box 820 together with the solid fuel and air, thereby improving the calorific value of the gas in the carbon box 820. The heat-consuming air input pipe 830 and the hot-air pipe 840 are both arranged at the inner top of the carbon box 820, the heat-consuming air input pipe 830 is connected with the hot-air pipe 840, and the end of the heat-consuming air input pipe 830 is connected with the heat-consuming air. The output pipe 440 is connected, the hot air pipe 840 is connected with the hot air input pipe 420, the heat-consuming air generated by the dry distillation equipment 600 is passed into the heat-consuming air input pipe 830, and the flame generated by the combustion of the solid fuel in the charcoal box 820 and the high-temperature airflow affect the consumption. The hot air in the hot air input pipe 830 is heated to form a high temperature air heat source, and then the high temperature air heat source is transported from the hot air input pipe 420 to the dry distillation equipment 600 again to form a high temperature heat source cycle.

Preferably, a heating plate 874 is fixed laterally inside the carbon box 820, the carbon box 820 is located on the top of the heating plate 874 to form a heating chamber 870, an inlet 871 is provided on one side of the heating plate 874, and the top of the carbon box 820 is far away from the inlet One side of 871 is provided with an outlet pipe 872, a plurality of drop partitions 873 are fixedly installed in the heating chamber 870, and adjacent drop partitions 873 are alternately provided with openings up and down, and the heating chamber 870 forms an S-shaped flow channel through the drop partitions 873, The heat-consuming air input pipe 830 is located below the heating chamber 870 , and the hot air pipe 840 is penetrated in the heating chamber 870 . The heat-consuming air in the heat-consuming air duct 840 is heated by the flame generated by the combustion of the solid fuel in the charcoal box 820, and the high-temperature flue gas generated in the charcoal box 820 enters the S-shaped flow channel through the inlet 871, so that the air in the hot-air duct 840 is The hot air is reheated by the high temperature flue gas, thereby improving the heating efficiency of the hot air.

The outlet pipe 872 is connected to the air inlet end of the first blower 411 through the air return pipe 412, and the first blower 411 re-inhales the high-temperature flue gas discharged from the outlet pipe 872 into the carbon box 820 through the air return pipe 412, thereby avoiding heat loss, and further. Improve energy efficiency.

Preferably, in order to stabilize the air pressure in the pipe, a heat-consuming air box 822, a hot-air box 823 and a return air box 821 are also included. At the junction of the hot air pipe 840, the hot air box 823 is assembled at the rear end of the hot air box 823, and the heat-consuming air enters the carbon box 820 for heating, the air is boosted under the action of high temperature, and the high-pressure airflow passes through the heat-consuming air box 822 and the hot air box 823. And the return to the inner box can buffer and reduce the pressure, avoid the phenomenon of backflow or leakage of the high-temperature gas source, and then achieve a good voltage regulation effect.

Specifically, the feeding device includes a hopper 850, a feeding auger 860 and a blanking pipe 861. The hopper 850 is fixedly installed at the feeding end of the feeding auger 860, and the blanking pipe 861 connects the discharging end of the feeding auger 860 to the feeding end of the feeding auger 860. Spray tube 862 is connected.

Referring to Figure 13, a dry distillation production process based on a solid fuel spiral dry distillation machine includes the following operation steps:

a. Material preparation: First, select solid biomass fuel, and prepare enough fuel for the curve hot blast stove 800 and dry distillation equipment 600 as planned;

b. Start the DCS electric control cabinet 200 system, instrumentation and other system devices, and open each electric control valve that is normally open;

c. Sealed feeding: turn on the feeding auger 110, input the qualified fuel from the first feeding auger 110 into the silo 120, and then feed it into the fuel filter 500 from the second feeding auger 110. The feeder is pushed into the retort barrel 630 according to the specified feed amount. At the same time, start the fuel filter 500 heat exchange air output pipe fan and carbon monoxide detector (the carbon monoxide content of the exhaust heat exchange air is less than 1/Nm ³ ) to supply gasification medium for the curved hot blast stove 800;

d. Sealed air supply: start the rotating seal 620 air pump to stabilize and seal the operation system;

e. Air heating: start the curved hot blast stove 800 using the air feeding process to make air into hot air, and the hot air can also use natural gas instead of the curved hot blast stove 800 to heat the fuel;

j. Fuel dry distillation: the hot air is heated in the curved hot blast furnace 800 and sent to the left end rotary seal 620, flows through the first hollow spiral cylinder and releases heat energy for the fuel in the dry distillation barrel 630, and the hot air consumption path after the heat energy is released The right end rotary seal 620 returns to the curved hot blast stove 800 for reheating;

h. Dry distillation temperature control: According to the thermochemical reaction process of the fuel in the dry distillation barrel 630, the temperature is controlled according to the temperature sensor. The temperatures of drying, dry distillation and oxidation are 350°, 600°, and 1100° respectively. If the carbon production is high, the dry distillation gas production will be low. On the contrary, if the gas production is required to be large, the carbon production will be small, which should be based on the requirements of the enterprise;

i. Heating equipment conversion: the fuel enters into the dry distillation barrel 630, and is heated between the first hollow spiral fins 650 in the first hollow spiral barrel for thermochemical reaction, and then the dry distillation gas is gradually generated and discharged from the gas output pipe 430 to combustion When the burner 920, the burner 920 and the igniter 911 at the top of the chimney 910 show that the flame is full and the flame is erupted, the blower of the burner 920 is started to inhale the replacement hot gas output by the fuel filter 500 to heat the hot air and enter the cycle heating process. At the same time, turn off the operation of the curve hot blast stove 800;

j. When heating the hot air, the excess dry distillation gas is transported to the relevant gas equipment through the gas branch pipe 431;

k. Carbon output: According to the prompts of biomass carbon material level meter 570, start the temperature unloading carbon output device 700 in time to output carbon;

l. Separation of tar and wood vinegar;

m. Cooling, metering, packaging;

n. Monitor the operation status of the solid fuel spiral dry distillation machine series, and adjust the material flow rate and operation progress according to the prompts of the series of instruments and meters;

o. Pour the overflowed sewage from the condensate tank 610 into the sewage tank in time;

p. When temporarily shutting down the operation, turn off the operation of the electrical equipment of the feeding equipment 100 and the dry distillation equipment 600, and instruct each normally open valve to enter a sealed state;

q. When the system is overhauled and stopped according to requirements, dry distillation of the materials in the feeding equipment 100 and the dry distillation barrel 630 is completed one by one, and all the materials in the equipment are discharged, and then the electrical equipment is turned off one by one, and finally the DCS electric control cabinet 200 is cut off. power supply;

r. Clean up the work site, repair and maintain the system equipment.

In this embodiment, the solid biomass fuel (pulverized agricultural and forestry waste, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, shale, etc.) , sludge), the length of the selected solid biomass fuel is less than or equal to 30mm, the sand content of the fuel is less than 1%, and the solid biomass fuel must be free of agglomeration.

In this embodiment, the preheating step of the curved hot blast stove 800 is also included. The preheating step of the curved hot blast stove 800 is performed before the charging step, and the fuel in the retort barrel 630 is continuously heated to 800-1100°. ready.

In this embodiment, specifically, the fuel filter 500 uses a feeder to continuously feed into the feed port of the dry distillation barrel 630 according to the designed output, and the replacement hot gas is sent to the burner 920 by the blower as a combustion-supporting agent to improve the purity of the gas.

In this embodiment, specifically, the start-up curve hot blast stove 800 heats the fuel in the retort barrel 630 with air through the skin to form hot air. The temperature of the hot air should meet the retorting temperature standard designed by the enterprise, and the constant temperature heating is continuously performed.

In this embodiment, specifically, the first hollow helical cylinder rotates continuously, and the fuel rotates up and down according to the designed route, falls and rolls to be heated, and performs drying, dry distillation, oxidation, and reduction thermochemical reactions in the dry distillation barrel 630. The directional force of a hollow helical blade 650 pushes down and flows to the end of the retort barrel 630 to generate biomass charcoal. The installation enterprise should formulate the biomass char standard according to the requirements of the enterprise. When the produced biomass char is not fully cracked, it must adjust the deceleration of the first hollow screw cylinder, otherwise increase the rotation speed of the first screw cylinder.

In this embodiment, specifically, in the step i of the heating equipment conversion step, the first hollow spiral cylinder is continuously operated for 3 minutes, and then the operation of the curved hot blast stove 800 is stopped. The 911 is always turned on to burn off combustible gases such as carbon monoxide in the gas, preventing air pollution.

In this embodiment, specifically, the bottom of the temperature unloading charcoal output device 700 is equipped with a shut-off fan 763, and a meter and a packaging machine are matched on site.

In this embodiment, specifically, the DCS electric control cabinet 200 is program-controlled, and the related supporting equipment adopts frequency conversion, and the manual operation procedure is implemented, and the button of the DCS electric control cabinet 200 is clicked to instruct the retort system device to run continuously according to the design process. .

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or terminal device that includes a list of elements includes not only those elements, but also a non-exclusive list of elements. other elements, or also include elements inherent to such a process, method, article or terminal equipment. Without further limitation, an element defined by the phrase "includes..." or "comprises..." does not preclude the presence of additional elements in the process, method, article, or terminal device that includes the element. In addition, in this document, "greater than", "less than", "exceeds", etc. are understood to exclude the number; "above", "below", "within" and the like are understood to include the number.

Although the above embodiments have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic inventive concept, so the above is only the implementation of the present invention For example, it does not limit the scope of patent protection of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly used in other related technical fields, are similarly included in this document. The invention is within the scope of patent protection.

Claims (10)

1. a solid fuel spiral dry distillation machine, comprising charging equipment and dry distillation equipment, it is characterized in that: also comprise fuel filter, unloading temperature charcoal discharge device and curve hot blast stove; The fuel filter includes a barrel, the fuel inlet pipe at the top of the barrel is connected to the discharge end of the feeding equipment, and the discharge conical pipe at the bottom of the barrel is connected to the inlet of the dry distillation equipment , an air output pipe is installed on the side of the barrel; The dry distillation equipment includes a dry distillation barrel, two rotary seals and a first hollow spiral barrel, the two rotary seals are arranged on both sides of the dry distillation barrel, and the first hollow spiral barrel includes a first hollow spiral plate and a sealing It consists of hot air cylinders welded on both sides of the first hollow helix. The first hollow helical cylinder is coaxially installed in the dry distillation cylinder. The hot air cylinders at both ends of the first hollow helical cylinder extend beyond the rotating seal. The upper part is provided with a flow hole communicating with the rotary seal, and a temperature unloading charcoal discharge device is installed at the discharge port of the dry distillation barrel; The curved hot blast stove includes a charcoal box, and the charcoal box is provided with a heat-consuming air input pipe and a hot-air pipe for heating air, the heat-consuming air input pipe is connected with the hot-air pipe, and the heat-consuming air input pipe is output by The pipe is connected with the rotary seal on the side close to the discharge port of the retort barrel, and the hot air pipe is communicated with the rotary seal on the side near the inlet port of the retort barrel through the hot air input pipe, so that the first hollow spiral barrel is connected to the rotary seal on the side of the retort barrel. A circulating hot air system is formed between the curvilinear hot blast stoves. The bottom of the curvilinear hot blast stove is equipped with a temperature unloading and charcoal discharge device. The air outlet pipe is connected. 2. solid fuel spiral dry distillation machine according to claim 1, is characterized in that: also comprises heating box, the side wall of described heating box is equipped with burner and chimney, chimney is close to the bottom of heating box, the top of chimney is An igniter is installed at the nozzle, the hot air input pipe is penetrated in the heating box, the hot air output pipe is communicated with the hot air input pipe, and the connection position of the hot air output pipe and the hot air input pipe is located in the heating box. At the front end, the hot gas output pipe can be connected to the burner through the output branch pipe. 3. The solid fuel spiral dry distillation machine according to claim 1, characterized in that: the feeding device comprises a silo and two feeding augers, and the feeding end of the feeding auger located at the front end is connected with a feeding hopper , the discharge end of the feeding auger is connected to the top of the silo, the feeding end of the feeding auger located at the rear end is communicated with the bottom of the silo, and the discharging end of the feeding auger is connected to the fuel inlet of the fuel filter Tube connection. 4. The solid fuel spiral dry distillation machine according to claim 1, wherein a stainless steel filter screen is provided in the section from the fuel inlet pipe to the air output pipe in the barrel, and the side wall of the barrel is also provided with a stainless steel filter screen. Two entry holes are provided, and the opening and closing door components for opening or closing the opening are arranged at the entry holes. 5. The solid fuel spiral dry distillation machine according to claim 1, characterized in that: the rotary seal comprises a cylinder cover which is sealed and installed outside the dry distillation machine cylinder, the cylinder cover is provided with a connecting pipe, and the hot air cylinder rotates and passes through the cylinder. Outside the cylinder cover, an oil sealing device is arranged between the hot air cylinder and the cylinder cover. 6 . The solid fuel spiral dry distillation machine according to claim 5 , wherein the oil sealing device comprises a sealing flange, an oil tank, an air bag, a rubber pad and a graphite rope, and the sealing flange is fixedly sleeved on the hot air cylinder. 7 . The outer circumference of the oil tank is assembled on one side of the sealing flange, the oil tank is designed with an oil nozzle, the oil pipe is installed at the bottom of the oil tank, the air nozzle is provided on the shoulder of the sealing flange, and the air nozzle nut is assembled at the bottom of the air nozzle. An air bag, a rubber pad and a graphite rope are circumferentially sleeved on the inner ring wall in sequence from the outside to the inside, and the air nozzle nut is connected with the air bag. 7 . The solid fuel spiral dry distillation machine according to claim 1 , wherein the temperature unloading and charcoal discharging device comprises an outer cylinder, an inner cylinder, a second hollow spiral cylinder and a rotary joint, and the outer cylinder and the inner cylinder are coaxially sleeved. 8 . Set up and form a water jacket, the second hollow helical cylinder is coaxially arranged in the inner cylinder, the rotary joint is arranged at one end of the second hollow helical cylinder, and the same side for cooling water is formed between the second hollow helical cylinder and the rotary joint. A charcoal inlet hopper is arranged at the top of one side of the inner cylinder, and a charcoal outlet pipe assembly is arranged at the bottom of the other side of the inner cylinder. 8 . The solid fuel spiral dry distillation machine according to claim 7 , wherein the rotary joint has a water-passing channel in communication with the shaft sleeve of the second hollow spiral cylinder, and the rotary joint is equipped with a water inlet elbow. 9 . , The joint outlet pipe and the shaft sleeve inlet pipe, the water inlet elbow and the water passage are not connected to each other, the joint outlet pipe is connected with the water passage, the shaft sleeve inlet pipe is connected with the water inlet elbow, and the shaft sleeve inlet pipe is connected. The end extends through the water passage to the inner distal end of the shaft sleeve. 9 . The solid fuel spiral dry distillation machine according to claim 1 , wherein a heating plate is fixedly installed in the interior of the charcoal box, the charcoal box is located on the top of the heating plate to form a heating chamber, and one side of the heating plate is provided with a heating plate. 10 . At the entrance, the top of the carbon box is provided with an outlet pipe on the side away from the entrance. Multiple drop baffles are fixedly installed in the heating chamber. The adjacent drop baffles are alternately provided with openings, and the heating chamber forms an S-shaped flow channel through the drop baffles. The heat-consuming air input pipe is located below the heating chamber, and the hot air pipe is penetrated in the heating chamber. 10 . The solid fuel spiral dry distillation machine according to claim 9 , wherein a gas return pipe is installed on the outlet pipe, and the gas return pipe is connected to the air inlet of the first blower on the spray pipe. 11 .

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