CN114923181B - Slag melting device - Google Patents
Slag melting device Download PDFInfo
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- CN114923181B CN114923181B CN202210659644.6A CN202210659644A CN114923181B CN 114923181 B CN114923181 B CN 114923181B CN 202210659644 A CN202210659644 A CN 202210659644A CN 114923181 B CN114923181 B CN 114923181B
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- furnace body
- slag
- slag discharge
- discharge port
- port
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- 239000002893 slag Substances 0.000 title claims abstract description 98
- 238000002844 melting Methods 0.000 title claims abstract description 30
- 230000008018 melting Effects 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- 239000000779 smoke Substances 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010285 flame spraying Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 210000003128 head Anatomy 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/10—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/20—Supplementary heating arrangements using electric energy
- F23G2204/201—Plasma
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/12—Waste feed arrangements using conveyors
- F23G2205/121—Screw conveyor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to a slag melting device, which comprises a furnace body with a combustion cavity, wherein the furnace body comprises a main body part and a furnace cover, a feed inlet and a smoke discharge outlet are formed in the furnace cover, a slag discharge outlet which is flush with the bottom wall in the combustion cavity is formed in the side wall of the main body part, and a sealing plug is detachably arranged at the slag discharge outlet and used for opening or closing the slag discharge outlet. When a small amount of materials are initially melted, the temperature of the outflow materials is lower as the outflow materials are closer to the outer end of the slag discharge port, so that condensed materials which are gradually thickened from inside to outside and welded with the sealing plug are formed, the condensed materials are communicated with the sealing plug, the sealing property of the slag discharge port is improved, the heating rate and the melting effect of a combustion cavity are improved, when more melted materials in the combustion cavity can be continuously discharged, the sealing plug and the condensed materials welded on the sealing plug are removed through a crowbar, the slag discharge port with an gradually increased opening is exposed, and the discharging is smoothly carried out; the sealing and conducting modes of the slag discharging port are convenient to operate, the treatment cost is low, and industrialization is convenient to realize.
Description
Technical Field
The invention relates to the technical field of hazardous waste treatment, in particular to a slag melting device.
Background
Slag is a byproduct of hazardous waste incineration, contains a large amount of Cr, cu, zn, ni, pb, as and other heavy metals, has high heavy metal leaching mass concentration, and belongs to the strictly forbidden direct landfill material specified in the current country. The adoption of plasma melting to treat fly ash and slag is considered as one of the most effective technical approaches for harmless and recycling of ash, and the hot slag is a vitreous body, so that high-end buildings and heat-insulating products can be produced without causing harm to the environment.
The Chinese patent publication No. CN215906153U (application No. CN 202122251624.9) discloses a structure comprising a furnace frame and a furnace body, wherein an empty chamber, a gasification chamber and a melting chamber are sequentially arranged in the furnace frame from top to bottom; the top of the empty chamber is provided with a feed inlet and an exhaust outlet, the exhaust outlet is communicated with an air inlet of the heat accumulating type heat exchange system, the feed inlet is respectively connected with a garbage hopper, a lime hopper and a coke hopper through a mixing hopper, the gasification chamber is arranged in a horn shape, two side walls are provided with a plurality of air inlet branch pipes, one end of each air inlet branch pipe is communicated with the inside of the gasification chamber, the other end of each air inlet branch pipe is connected with a blower through an air inlet main pipe, the side wall of the melting chamber is provided with a plasma torch and an auxiliary fuel inlet, the auxiliary fuel inlet is communicated with an air outlet of the heat accumulating type heat exchange system, and the bottom of the melting chamber is provided with a slag discharging port communicated with a slag heat insulation chamber.
For the melting furnace with the structure, the slag discharge port is usually required to be closed before feeding so as to improve the temperature rising efficiency in the furnace, and in the melting and discharging process of materials, the problem that the slag discharge port is blocked by discharged materials easily occurs due to the lower temperature at the slag discharge port. In order to solve the problem, the structure is provided with a burner at the slag discharge port and is combined with a slag heat preservation chamber to avoid the blockage of the slag discharge port. However, the above structure still has a possibility of clogging of the slag discharge port due to the influence of the operation time, but since the slag discharge port is enclosed in the slag heat preservation chamber, if the slag discharge port is clogged, it is difficult to perform the treatment; meanwhile, the burner is always in a burning state for heat preservation, and the treatment cost is relatively high.
Disclosure of Invention
Aiming at the current state of the art, the invention provides the slag melting device which is convenient for sealing and conducting the slag discharging port and has low treatment cost.
The technical scheme adopted for solving the technical problems is as follows:
The furnace body comprises a main body part with an open top and a furnace cover arranged at the top of the main body part, a feed inlet and a smoke discharge port are formed in the furnace cover, and a slag discharge port which is flush with the inner bottom wall of the combustion chamber is formed in the side wall of the main body part; further comprises:
The feeding screw conveyor is arranged above the furnace cover, the top of the feeding screw conveyor is provided with an inlet, and the bottom of the feeding screw conveyor is provided with an outlet communicated with the feeding inlet;
the feeding hopper is arranged above the feeding screw conveyor, the diameter of the feeding hopper is gradually reduced from top to bottom, and the lower port of the feeding hopper is connected with an inlet at the top of the feeding screw conveyor;
the feeding mechanism is arranged beside the furnace body and comprises a conveyor belt which is obliquely arranged from bottom to top, and the upper end of the conveyor belt is arranged corresponding to the top edge of the feed hopper;
The air extraction mechanism is arranged above the furnace cover and connected with the smoke discharge port and is used for discharging the gas in the furnace body and keeping a micro negative pressure state in the furnace body;
the plasma gun penetrates through the side wall of the furnace body and the gun head is exposed out of the combustion cavity;
the air supply channel is arranged on the side wall of the furnace body and is communicated with the combustion cavity;
the air blowing mechanism is arranged outside the furnace body, connected with the outer port of the air supply channel and used for blowing air into the combustion cavity; and
The sealing plug is detachably arranged at the slag discharging opening and is used for opening or closing the slag discharging opening;
The inner bottom wall of the slag discharging port gradually and downwards sunken from inside to outside so as to gradually increase the width of the slag discharging port along the fluid flowing direction, the sealing plug comprises a first part with a cross section formed into a right-angle triangle shape and a second part vertically connected to the bottom of the right-angle side of the first part, the sealing plug is inserted into the slag discharging port, the first part of the sealing plug is filled in a sunken area, one right-angle side of the first part forms a plane flush with the bottom wall in the combustion cavity, and the second part covers the outer edge of the slag discharging port.
Preferably, the furnace body is formed by pouring high-temperature-resistant acid-resistant alkali-resistant materials with different hardness, and comprises a heavy pouring layer positioned on the inner layer and a light pouring layer positioned on the outer side, wherein the heavy pouring layer positioned near the inner bottom wall of the slag discharging port extends outwards and penetrates through the outer layer, and the concave area is arranged on the heavy pouring layer of the penetrating part and extends from the inner edge to the outer edge. The heavy casting layer has better high-temperature resistance and better heat preservation, and the density of the heavy casting layer is greater than that of the light casting layer, and is approximately 2:1; because the sealing plug needs to be removed by a crowbar during discharging, the bottom of the slag discharging port is covered with a heavy casting layer so as to have higher strength.
Further preferably, the first portion of the sealing plug is hollow, and an outer port of the hollow portion of the first portion is exposed on an outer side wall of the furnace body in a state where the sealing plug is inserted in the slag discharging port. Because seal the stopper and be the consumptive material, in order to be convenient for production and reduce cost, seal the stopper and can adopt materials such as yellow mud to take shape in batches via the mould, set up hollow portion on sealing the stopper, when need with the crow bar sled remove seal the stopper, the outer port location crow bar tip of hollow portion to, at the sled in-process of removing, the first part takes place to break more easily, conveniently pries the relatively firm discharge material of condensing and take out through the main part of sealing the stopper.
In the invention, in the initial deslagging state, partial materials flowing into a deslagging port are condensed to form a solidified material with a right-angle triangle cross section, the solidified material, the upper surface of the first part and the inner surface of the second part of the sealing plug are welded together to form a sealing structure, and the cross section of the sealing structure is an acute triangle structure with the tip end facing the inside of the furnace body. In the initial state, after partial materials are melted, the sealing plug is welded with the sealing plug, so that a better sealing effect can be achieved, and when the sealing plug is tilted, the condensed part of the materials is conveniently brought out, so that the slag discharging port is opened.
Preferably, the heavy casting layer of the inner layer of the furnace body is provided with a round corner structure near the inner edge of the slag discharge port. The structure can guide the discharged materials, and avoid the accumulation at the position to block the inner end of the slag discharge port.
Preferably, the plasma gun is obliquely arranged on the side wall of the furnace body, and gradually inclines downwards from outside to inside. The inner end of the air supply channel and the gun head of the plasma gun are positioned on the same horizontal line, the included angle a between the flaming angle of the plasma gun and the horizontal plane is 21 degrees, and the included angle b between the axis of the air supply channel and the horizontal plane is 30 degrees. The flame sprayed by the obliquely arranged plasma gun can form spiral airflow from bottom to top in the combustion cavity, so that the temperature rise of the combustion cavity is accelerated; after the combustion chamber is heated to a certain temperature, the heating speed is reduced, at the moment, air is blown in, the air inlet is lower than the flame, and the flame can be supported from the bottom of the flame to be upwards spirally diffused in a larger range, so that the heating speed is further improved.
Preferably, a pipeline extending outwards along the axial direction of the air supply channel is arranged outside the furnace body, an outer port of the pipeline is sealed by a transparent cover to form an observation port, and a blast pipeline communicated with the pipeline is arranged above the side of the pipeline and is vertically arranged. The observation port can pay attention to the melting condition of materials in the combustion cavity at any time so as to judge whether the blast volume and the material addition amount need to be increased or decreased, thereby playing a better role in slag treatment.
Preferably, the number of the plasma guns is two, the two opposite side walls of the furnace body are arranged in a staggered manner, at least two groups of air supply pipelines are respectively arranged on the side wall of the furnace body where each plasma gun is located, and each air supply pipeline is arranged at intervals with the plasma gun. And 3 groups of air supply pipelines are arranged on the side wall of the furnace body where the plasma gun is positioned, wherein two groups of air supply pipelines are symmetrically arranged on two sides of the plasma gun respectively, and a third group of air supply pipelines are arranged close to the inner side wall of the combustion chamber far away from the plasma gun. The structure is favorable for improving the temperature rising efficiency, and ensures that the temperature of each part in the combustion cavity is more uniform so as to improve the melting effect.
Compared with the prior art, the invention has the advantages that: the plasma gun is used for heating the combustion chamber, so that rapid temperature rise is realized; the detachable sealing plug is arranged at the slag discharging port, when a small amount of materials are primarily melted, the flowing out materials are gradually thickened from inside to outside and are welded with the sealing plug together due to the fact that the temperature is lower at the outer end of the slag discharging port, the condensed materials are communicated with the sealing plug to improve the sealing performance at the slag discharging port, so that the heating rate and the melting effect of a combustion cavity are improved, more melted materials in the combustion cavity can be discharged continuously, and when the continuous discharging is realized, the sealing plug and the condensed materials welded on the sealing plug are removed through a crowbar, the slag discharging port with the gradually-increased opening is exposed, and the discharging is carried out smoothly; the sealing and conducting modes of the slag discharging port are convenient to operate, the treatment cost is low, and industrialization is convenient to realize.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a top view of an embodiment of the present invention;
FIG. 5 is a side cross-sectional view of an embodiment of the present invention;
FIG. 6 is a schematic view of a structure of a wind supply channel according to an embodiment of the present invention;
FIG. 7 is a flow path diagram of ignition heat versus feed air in accordance with an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 7, the slag melting apparatus of the present embodiment includes a furnace body 1, a feed screw conveyor 2, a feed hopper 3, a feed mechanism 4, an air extraction mechanism (not shown), a plasma gun 5, an air supply passage 6, an air blowing mechanism (not shown), and a closure plug 7.
The furnace body 1 is provided with a furnace body 1 of a combustion chamber 11, the furnace body 1 comprises a main body part 13 with an opening 12 at the top and a furnace cover 14 arranged at the top of the main body part 13, a feed inlet 15 and a smoke discharge port 16 are arranged on the furnace cover 14, and a slag discharge port 17 which is flush with the inner bottom wall of the combustion chamber 11 is arranged on the side wall of the main body part 13.
The feeding screw conveyor 2 is arranged above the furnace cover 14, the top of the feeding screw conveyor 2 is provided with an inlet 21, and the bottom of the feeding screw conveyor 2 is provided with an outlet 22 communicated with the feed inlet 15; the feed hopper 3 is arranged above the feed screw conveyor 2, the diameter of the feed hopper 3 is gradually reduced from top to bottom, and the lower port of the feed hopper 3 is connected with an inlet 21 at the top of the feed screw conveyor 2; the feeding mechanism 4 is arranged beside the furnace body 1 and comprises a conveyor belt 41 which is obliquely arranged from bottom to top, and the upper end of the conveyor belt 41 is arranged corresponding to the top edge of the feed hopper 3.
The air extraction mechanism is arranged above the furnace cover 14 and connected with the fume discharge opening 16, and is used for discharging the gas in the furnace body 1 and keeping the micro negative pressure state in the furnace body.
The plasma gun 5 passes through the side wall of the furnace body 1 and the gun head is exposed in the combustion chamber 11; the air supply channel 6 is arranged on the side wall of the furnace body 1 and is communicated with the combustion chamber 11; the air blowing mechanism is arranged outside the furnace body 1, connected with the outer port of the air supply channel 6 and used for blowing air into the combustion cavity 11.
In the present embodiment, as shown in fig. 3, the closure plug 7 is detachably provided at the slag discharge hole 17 for opening or closing the slag discharge hole 17. Specifically, the inner bottom wall of the slag discharging opening 17 is gradually recessed downward from inside to outside so that the width of the slag discharging opening 17 is gradually increased in the fluid flowing direction, the closure plug 7 includes a first portion 71 having a cross section formed in a right triangle shape and a second portion 72 vertically connected to the bottom of the right-angle side of the first portion 71, the first portion 71 of the closure plug 7 is filled in the recessed area 171 and one right-angle side of the first portion 71 forms a plane flush with the inner bottom wall of the combustion chamber 11 in a state in which the closure plug 7 is inserted in the slag discharging opening 17, and the second portion 72 covers the outer edge of the slag discharging opening 17. When the sealing plug 7 is inserted into the slag discharge port 17, the contact between the sealing plug 7 and the slag discharge port 17 is not tight, and a certain gap may be formed, so long as the sealing plug 7 is kept from falling out of the slag discharge port 17.
The furnace body 1 of this embodiment is formed by casting high temperature resistant acid and alkali resistant materials, and comprises a heavy casting layer 101 positioned on an inner layer and a light casting layer 102 positioned on an outer side, wherein the heavy casting layer 101 positioned near the inner bottom wall of the slag discharging port 17 extends outwards and penetrates through the outer layer, and a concave area 171 is arranged on the penetrating part of the heavy casting layer 101 and extends from the inner edge to the outer edge. The heavy casting layer 101 has better high temperature resistance and the light casting layer 102 has better heat preservation, the density of the heavy casting layer 101 is greater than that of the light casting layer 102, the density of the heavy casting layer 101 and the density of the light casting layer are approximately 2:1, and specific materials are the prior art and are not described herein; since the closure plug 7 needs to be removed by a crowbar at the time of discharging, the bottom of the slag discharge port 17 is covered with the heavy casting layer 101 to have higher strength.
The first portion 71 of the plug 7 is hollow, and the outer end of the hollow portion 711 of the first portion 71 is exposed to the outer wall of the furnace body 1 in a state where the plug 7 is inserted into the slag discharging hole 17. Because seal stopper 7 is the consumptive material, in order to be convenient for production and reduce cost, seal stopper 7 can adopt materials such as yellow mud to take shape in batches via the mould, set up hollow portion on seal stopper 7, when seal stopper 7 is prized with the crow bar to the needs, the outer port location crow bar tip of hollow portion 711 to, in the sled removal in-process, first portion 71 takes place to break more easily, conveniently prizes the relatively firm discharge material of setting up and take out through the main part of seal stopper 7.
The supporting plate 173 arranged close to the lower edge of the slag discharging hole 17 is arranged on the outer side wall of the furnace body 1, and the sealing plug 7 is inserted into the slag discharging hole 17, and the supporting plate 173 has a certain supporting and limiting function, so that the sealing plug 7 and the slag discharging hole 17 do not need to be additionally fixed. After a small amount of molten material flows out into the slag discharge opening 17, the molten material is gradually welded to the closure plug 7 to fix the same.
In the present embodiment, in the initial deslagging state, part of the material flowing into the deslagging port 17 is condensed to form a solidified material 01 with a right-angle triangular cross section, and the solidified material 01 and the upper surface of the first part 71 and the inner surface of the second part 72 of the sealing plug 7 are welded together to form a sealing structure, wherein the cross section of the sealing structure is an acute-angle triangular structure with the tip end facing the inside of the furnace body. In the initial state, after being melted, part of the material is welded with the sealing plug 7, so that a better sealing effect can be achieved, and when the sealing plug 7 is tilted, the condensed part of the material is conveniently brought out, so that the slag discharging port 17 is opened.
The heavy casting layer 101 of the inner layer of the furnace body 1 is provided with a round corner structure 172 near the inner edge of the slag discharging hole 17. The structure can guide the discharged materials, and avoid the accumulation at the position to block the inner end of the slag discharge port.
The plasma gun 5 of the present embodiment is arranged obliquely on the side wall of the furnace body 1, and gradually slopes downward from outside to inside. The inner end of the air supply channel 6 is on the same horizontal line with the gun head of the plasma gun 5, and the included angle a between the flame angle of the plasma gun 5 and the horizontal plane is 21 degrees, while the included angle b between the axis of the air supply channel 6 and the horizontal plane is 30 degrees. The flame sprayed by the obliquely arranged plasma gun 5 can form spiral airflow from bottom to top in the combustion chamber 11, so that the temperature rise of the combustion chamber is accelerated; after the combustion chamber 11 is heated to a certain temperature, the heating speed is reduced, and at this time, air is blown in, the air inlet is lower than the flame, so that the flame can be lifted from the bottom of the flame to be upwards spirally diffused in a larger range, and the heating speed is further improved.
The furnace body 1 is provided with a pipeline 61 extending outwards along the axial direction of the wind supply channel 6, an outer port of the pipeline 61 is closed by a transparent cover to form an observation port 611, a blast pipeline 62 communicated with the pipeline 6 is arranged above the side of the pipeline 6, and the blast pipeline 62 is vertically arranged and connected with a blast mechanism. Through the observation port 611, the melting condition of the materials in the combustion chamber 11 can be paid attention to at any time, so as to judge whether the blast volume and the material adding volume need to be increased or decreased, and better slag treatment effect is achieved.
In this embodiment, two groups of plasma guns 5 are arranged alternately on two opposite side walls of the furnace body 1, a plurality of groups of air supply pipelines 6 are respectively arranged on the side wall of the furnace body 1 where each plasma gun 5 is located, and each air supply pipeline 6 is arranged at intervals with the plasma gun 5. The side wall of the furnace body 1 where one group of plasma guns 5 is arranged is provided with 3 groups of air supply pipelines 6, wherein two groups of air supply pipelines 6 are symmetrically arranged at two sides of the plasma guns 5 respectively, and a third group of air supply pipelines 6 are arranged close to the inner side wall of the combustion chamber 11 far away from the plasma guns 5. The above structure is advantageous in improving the temperature raising efficiency and making the temperature in the combustion chamber 11 more uniform to improve the melting effect.
The side wall of the furnace body 1 in this embodiment may be further provided with a thermocouple 8 capable of detecting the temperature in the combustion chamber 11to accurately determine the temperature in the furnace.
By using the melting device of the embodiment, each opening is closed firstly, only the smoke discharge port 16 is opened, the micro negative pressure state in the combustion cavity 11 is kept through the air extraction mechanism, the plasma gun 5 is opened, the air supply channel 6 is closed, and the rapid preheating and the temperature rise of the combustion cavity 11 are carried out; when the temperature is raised to 800-900 ℃, the temperature is raised slowly, at the moment, a small amount of coke is put into the bottom of the combustion chamber 11 through the feeding screw conveyor 2, the air supply channel 6 is opened, air is blown into the combustion chamber 11, the combustion of the coke is accelerated, and the temperature raising speed of the combustion chamber 11 is improved; when the temperature is raised to 1200 ℃, a small amount of material is put into the combustion chamber 11, the material is heated and melted simultaneously by using the coke combustion and plasma gun 5, and the melted material flows to the slag discharge port 17, and as the temperature is lower nearer to the outer end of the slag discharge port 17, the material presents triangular condensate with inward tips in the slag discharge port 17, and the condensed partial material is welded with the sealing plug 7 to thoroughly seal the slag discharge port 17; the combustion chamber 11 is gradually heated to 1450-1600 ℃, more materials are added into the combustion chamber 11 for a plurality of times, the melting condition of the materials is observed from each observation port 611, after each time of material adding, the materials to be added are melted to the middle lower part and can be added again, when the melted materials are over the top edge of the slag discharging port 17, the sealing plug 7 and the condensed materials welded on the sealing plug 7 are pried by using a crowbar, and the slag discharging port 17 with gradually enlarged opening is exposed; after that, the material can be discharged through the slag discharge port 17 while being charged into the combustion chamber 11, thereby realizing continuous treatment of the material.
In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the invention may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210659644.6A CN114923181B (en) | 2022-06-13 | 2022-06-13 | Slag melting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210659644.6A CN114923181B (en) | 2022-06-13 | 2022-06-13 | Slag melting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114923181A CN114923181A (en) | 2022-08-19 |
| CN114923181B true CN114923181B (en) | 2024-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210659644.6A Active CN114923181B (en) | 2022-06-13 | 2022-06-13 | Slag melting device |
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| Country | Link |
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| CN (1) | CN114923181B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2331533A1 (en) * | 1999-03-10 | 2000-09-14 | Osamu Yamashita | Thermoelectric conversion material and method of producing the same |
| CN102234173A (en) * | 2010-04-26 | 2011-11-09 | 秦皇岛玻璃工业研究设计院 | Oxy-fuel combustion technology of oxy-coal gas in glass melting furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143308B (en) * | 2013-01-29 | 2014-12-24 | 中国科学院上海应用物理研究所 | Reactor, reaction system comprising reactor, and making method for lining of reactor |
| CN109469910B (en) * | 2018-12-05 | 2024-02-13 | 航天环境工程有限公司 | Continuous overflow deslagging plasma melting furnace and application |
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2022
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| CA2331533A1 (en) * | 1999-03-10 | 2000-09-14 | Osamu Yamashita | Thermoelectric conversion material and method of producing the same |
| CN102234173A (en) * | 2010-04-26 | 2011-11-09 | 秦皇岛玻璃工业研究设计院 | Oxy-fuel combustion technology of oxy-coal gas in glass melting furnace |
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