CN110923012B - A pollution-free hydrogen production system - Google Patents

Abstract

The invention discloses a pollution-free hydrogen production system, which comprises a steam boiler, a reaction furnace matched with the steam boiler, a purification furnace communicated with the reaction furnace and a waste gas treatment device matched with the reaction furnace, wherein the reaction furnace is communicated with the purification furnace; the waste gas treatment device comprises an air guide pipe communicated with the reaction furnace, an absorption chamber communicated with the air guide pipe and a regeneration chamber matched with the absorption chamber; according to the invention, through the arrangement of the gas guide tube and the absorption chamber, gas in the reaction furnace is introduced into the absorption chamber, and waste gas in the reaction furnace is removed, so that the effects of protecting the environment and protecting the health of workers are achieved.

Description

A pollution-free hydrogen production system

technical field

The invention belongs to the technical field of hydrogen production, in particular to a pollution-free hydrogen production system.

Background technique

Hydrogen is the cleanest energy source with abundant raw materials and can be reused. When it is burned, it will not produce carbon monoxide, carbon dioxide, hydrocarbons, lead compounds and dust particles, which is harmful to the environment except for water and a small amount of hydrogen nitrogen. of pollutants.

There are many methods for preparing hydrogen, among which the water-gas method is a low-cost, high-yield method, which requires a high temperature environment, and is now mostly heated by burning anthracite coal; however, the combustion of coal will produce a lot of harmful and Polluting gases pollute the environment and endanger the health of workers.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the present invention provides a pollution-free hydrogen production system that can process combustion exhaust gas.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a pollution-free hydrogen production system, comprising a steam boiler, a reaction furnace matched with the steam boiler, a purification furnace communicated with the reaction furnace, and a A waste gas treatment device matched with a reaction furnace; the waste gas treatment device includes a gas conduit communicated with the reaction furnace, an absorption chamber communicated with the gas conduit, and a regeneration chamber matched with the absorption chamber; The setting of the gas pipe introduces the gas in the reaction furnace into the absorption chamber, and absorbs all the harmful gases and polluting gases in it, so as to avoid the discharge of harmful gases and polluting gases, and protect the environment and the staff. The function of health; through the setting of the regeneration chamber, the absorbing liquid used to absorb the waste gas is regenerated and utilized, so that the absorbing liquid can be recycled repeatedly, thus reducing the cost.

Further, the absorption chamber includes a first absorption cavity communicated with the airway, a second absorption cavity communicated with the first absorption cavity, and a third absorption cavity communicated with the second absorption cavity , a spray chamber communicated with the third absorption chamber and a centrifugal atomizer arranged in the spray chamber; through the arrangement of multiple absorption chambers, not only different waste gases can be removed, but also waste gases can be treated. It is absorbed many times to ensure that the exhaust gas in the gas can be absorbed cleanly, and the setting of the spray chamber and the centrifugal atomizer further plays the role of filtering the exhaust gas.

Further, the regeneration chamber includes a catheter connected with the third absorption chamber at one end, a regeneration chamber connected with the other end of the catheter, and a regeneration chamber for connecting the regeneration chamber and the centrifugal mist. Through the setting of the catheter, the third absorption cavity is connected with the regeneration cavity, so that the absorption liquid in the third absorption cavity can be introduced into the regeneration cavity for regeneration, which saves costs and at the same time , which also makes the absorption liquid always have a good effect of absorbing waste gas, and then the regeneration chamber and the centrifugal atomizer are connected through the infusion pipe, so that the regenerated absorption liquid is introduced into the centrifugal atomizer and ejected, establishing a The complete cycle enables the absorbing liquid to be recycled and has a better effect of purifying the exhaust gas.

Further, the first absorption cavity is communicated with the second absorption cavity through a first connection pipe; one end of the first connection pipe is set on the top of the first absorption cavity, and the other end is close to the The bottom of the second absorption cavity is arranged; one end of the first connection pipe is arranged at the top of the first absorption cavity, so that the gas introduced into the first absorption cavity can better enter the first connection pipe and be introduced into the second absorption cavity ; and the other end of the first connecting pipe is set close to the bottom of the second absorption cavity, so that the gas introduced into the second absorption cavity can float up from the bottom, and the contact time with the absorption liquid in the second absorption cavity Longer and more fully reacted, so that the exhaust gas in the gas can be better treated.

Further, the second absorption cavity is communicated with the third absorption cavity through a second connecting pipe; one end of the second connecting pipe is set on the top of the second absorption cavity, and the other end is close to the The bottom of the third absorption cavity is set; one end of the second connecting pipe is set at the top of the second absorption cavity, so that the gas introduced into the second absorption cavity can better enter the second connecting pipe and be introduced into the third absorption cavity ; and the other end of the second connecting pipe is set at a position close to the bottom of the third absorption cavity, so that the gas introduced into the third absorption cavity can float up from the bottom, and the contact time with the absorption liquid in the third absorption cavity Longer and more fully reacted, so that the exhaust gas in the gas can be better treated.

Further, the regeneration chamber is communicated with the steam boiler through a steam pipe; the steam pipe is arranged close to the bottom of the regeneration chamber; the top of the regeneration chamber is provided with a gas collecting pipe; The regeneration chamber is connected with the steam boiler, so that the regeneration and reduction of the absorption liquid in the regeneration chamber can be realized by using steam, which plays a cost-saving role; and the outlet of the steam pipe is arranged at the bottom of the regeneration chamber, so that the During the rising process, the water vapor can better release heat to heat the absorbing liquid in the regeneration chamber; a gas collecting pipe is arranged on the top of the regeneration chamber, so that the gas product obtained by heating the absorbing liquid can be collected and reused.

Further, the centrifugal atomizer includes an atomization chamber communicated with the infusion pipe, a driving member arranged in the atomization chamber, a centrifugal fan detachably connected to the output end of the driving member, and a centrifugal fan along the The atomization holes are uniformly arranged in the circumferential direction of the atomization chamber; through the setting of the centrifugal fan, it not only plays the role of dispersing the absorption liquid, but also plays the role of sucking the absorption liquid in the regeneration chamber into the atomization chamber, so that there is no need to The additional driving parts can not only save costs, but also play the role of energy saving and emission reduction, and the arrangement of multiple atomization holes further plays the role of atomizing and spraying the absorption liquid, so as to make the absorption liquid and the gas. The contact is closer, thereby ensuring that the exhaust gas in the gas can be treated more cleanly.

Further, the top of the spray chamber is provided with a gas delivery pipe that communicates with the purification furnace; the bottom of the spray chamber is provided with a connection channel that communicates with the third absorption chamber; the gas delivery pipe is far away from the The connecting channel is arranged; through the setting of the connecting channel, the absorbing liquid after being atomized and reacting with the exhaust gas can be re-converged and then flow into the third absorption cavity, and finally introduced into the regeneration cavity by the catheter for recycling, and the gas is also recycled. It can enter the spray chamber through the connecting channel; and by setting the gas delivery pipe on the side away from the connecting channel, the gas entering the spray chamber needs to go through a long path to enter the gas delivery pipe, thereby making the gas and the misted The contact time of the absorbing liquid is longer and the reaction is more sufficient.

Further, the reaction furnace includes a reaction chamber communicated with the steam boiler, a heating chamber arranged below the reaction chamber, and a switch device matched with the reaction chamber; through the arrangement of the reaction chamber and the heating chamber, It separates the coal used for reacting with water vapor and the coal used for heating, so that the two react in two places, thereby avoiding the problem of mixing a large amount of waste gas generated by burning coal with water gas, and the impurity content is less, which is more convenient. Subsequent separation and purification; and the separation setting of the two, so that the reaction of water vapor and coal can continue without intermittent heating of coal, so that the production of water gas is more efficient and fast.

To sum up, the present invention introduces the gas in the reaction furnace into the absorption chamber through the arrangement of the gas duct and the absorption chamber, and removes the waste gas therein, thereby protecting the environment and the health of the staff.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the enlarged schematic diagram of A place in Fig. 1;

Fig. 3 is the three-dimensional structure sectional view of steam boiler and reaction furnace in the present invention;

Fig. 4 is the enlarged schematic diagram at B in Fig. 3;

Fig. 5 is the top view of the steam boiler in the present invention;

Fig. 6 is the sectional structure schematic diagram at A-A place in Fig. 5;

Fig. 7 is the enlarged schematic diagram of C place in Fig. 6;

Fig. 8 is the enlarged schematic diagram at D in Fig. 6;

Fig. 9 is the sectional structure schematic diagram at B-B place in Fig. 5;

Fig. 10 is the enlarged schematic diagram at the E place in Fig. 9;

Figure 11 is a schematic cross-sectional view of a steam boiler and a reaction furnace in the present invention;

Fig. 12 is the enlarged schematic diagram at F in Fig. 11;

Fig. 13 is the three-dimensional structure schematic diagram of the purification furnace in the present invention;

Fig. 14 is the enlarged schematic diagram at G in Fig. 13;

15 is a schematic structural diagram of an exhaust gas treatment device in Embodiment 2 of the present invention;

FIG. 16 is an enlarged schematic view of H in FIG. 15 .

Detailed ways

Example 1:

As shown in Figure 1-14, a pollution-free hydrogen production system includes a steam boiler 1, a reaction furnace 2 and a purification furnace 3; the steam boiler includes a steam chamber 11, a steam pipe 12 and an auxiliary heating device; the steam chamber is surrounded by The periphery of the reaction furnace basically surrounds the reaction furnace, so that the reaction furnace can directly heat the steam chamber, with high heating efficiency, less heat loss, and smaller equipment footprint; the reaction furnace includes a reaction chamber 21, a heating chamber 22 and a switch device; The reaction chamber is close to the steam chamber, and the heating chamber is installed under the reaction chamber and is close to the reaction chamber, so that the heating chamber can directly heat the reaction chamber; in order to better guide the heat in the heating chamber into the reaction chamber and the steam chamber , a plurality of heat-conducting fins 221 are installed on the inner wall of the heating chamber, one end of the heat-conducting fins is exposed in the heating chamber, and the other end is located in the steam chamber and the reaction chamber, which plays the role of heat conduction; one end of the steam pipe is connected to the steam chamber. , the other end is communicated with the reaction chamber, so that the steam is introduced into the reaction chamber from the steam chamber for reacting with the anthracite coal placed in the reaction chamber to generate water gas, and its reaction equation is H ₂ O+C=C0+H ₂ ; It is also heated by placing anthracite and making the anthracite react with oxygen in the air to release a large amount of heat. The reaction equation is C+O ₂ =CO ₂ ; since the heating chamber and the reaction chamber are separated, the vaporization reaction of water vapor and anthracite The reaction with the combustion and heating of anthracite can be carried out separately and simultaneously, without first burning the anthracite to heat the water and coal, and then reacting the water vapor channel with the high-temperature coal, which saves time and makes the gas production efficiency higher. The reaction of combustion and water gas is separated, the waste gas produced by combustion will not be mixed with water gas, and the coal ash, cinder and other substances produced by burning coal will not be mixed with water gas, so that the generated water gas will be more pure, and the subsequent purification will be more efficient. easy and convenient.

Specifically, the auxiliary heating device includes an insulating layer 13, a heating pipe 14 and a pipe groove 15; the insulating layer is made of asbestos and is installed in the side wall of the steam boiler to play a role of heat preservation and avoid heat loss, thereby improving the The utilization rate of energy plays a role in reducing costs; the pipe groove is opened on the outer wall of the reaction furnace to install the heating pipe, and also enables the heat of the heating pipe to be better conducted into the reaction furnace; The setting makes it possible to use a heating tube to assist heating in the evening when the electricity is relatively abundant, thereby reducing the combustion of coal and reducing pollution; wherein the heating tube includes an outer tube 141, a heating wire 142 and a powder filler 143. The powder filler It is magnesium oxide powder, which can protect the heating wire, prolong the service life of the heating wire, and also play the role of heat conduction and insulation.

Specifically, the heating chamber includes a combustion chamber 222, a slag chamber 223 and a slag discharge channel 224; the combustion chamber is adjacent to the reaction chamber, and the slag chamber and the combustion chamber are connected by a slag discharge channel, so that the slag obtained by burning anthracite can be quickly discharged And in order to ensure that the anthracite in the heating chamber can be fully burned, an air intake device is installed, and the air intake device includes an air intake pipe 23, a bronchus 24 and an air supply part 25, and the air supply part is a blower purchased on the market, which is Existing art, so do not repeat them here; the bronchus is opened at the bottom of the combustion chamber, one end of the air inlet pipe is communicated with the blower, the other end is communicated with the bronchus, and a plurality of evenly distributed air holes 241 are opened on the bronchus, thereby making the blower from the blower. The air fed into the combustion chamber can be dispersed into multiple small airflows, so that the contact between the anthracite and the air is more sufficient, thereby ensuring that the anthracite is fully burned and utilized, and avoiding the waste of resources; A flared section 242 is provided, so that the airflow blown out from the air hole can be better blown around along the flared section, and the flared section also plays a role in reducing the air pressure and airflow velocity, thereby making the blown air flow more In order to be gentle and avoid the phenomenon of dust raising; a filter element 243 is installed on the flared section, so that the airflow blown out from the air hole can be better dispersed, and it also prevents dust from falling into the air. The function in the stomata to avoid clogging of the stomata by cinders.

Specifically, the switch device includes a discharge valve 41 , a transmission assembly, a connecting rod 42 , a control rod 43 , a transmission chain 44 and a feed valve 45 ; wherein the transmission assembly includes a transmission shaft 411 , a first transmission gear 412 , and a second transmission gear 413 , the third transmission gear 414 and the rotating shaft 415; the transmission shaft is installed on the discharge valve and welded with the discharge valve; the installation cavity for installing the switch device is opened in the reaction furnace, and the first transmission gear is installed on the transmission shaft, and The transmission shaft is connected by a key, the second transmission gear and the side wall of the installation cavity are connected in rotation through a gear shaft, and the second transmission gear meshes with the first transmission gear; the third transmission gear meshes with the second transmission gear, and the third transmission gear is installed On the rotating shaft, it is connected with the rotating shaft key; one end of the rotating shaft is connected with a support rod bearing, the other end is provided with two grooves 4151, and two convex shafts 421 are installed on one end of the connecting rod, and the convex shaft can be inserted into the grooves just fine so that the connecting rod can rotate up and down relative to the rotating shaft, and can also drive the rotating shaft to rotate left and right; a sleeve 422 is installed on the other end of the connecting rod, and the control rod is connected to the installation cavity through the sleeve, so that the connection The rod can slide back and forth along the control rod, and the control rod is hinged to the mounting cavity for installing the switch device, so that the control rod can be rotated up and down and left and right, and when the control rod is rotated up and down, the connecting rod will follow the control rod. The rod slides, so that the two will not interfere with each other; and when the control rod rotates left and right, it will drive the connecting rod to move left and right, and then drive the discharge valve to rotate left and right along the movable groove, so as to realize the discharge valve to the discharge channel. In order to facilitate the control of the opening and closing of the discharge valve, the diameter of the third transmission gear is larger than that of the first transmission gear, and the diameter of the first transmission gear is larger than that of the second transmission gear, so that the connecting rod only needs to drive When the third transmission gear rotates at a smaller angle, the second transmission gear will rotate more circles, so that the first transmission gear rotates at a larger angle, which in turn drives the discharge valve to rotate at a larger angle to complete the discharge channel. The opening and closing of the valve make the operator's operation simpler, more convenient and quicker; two reset parts 48 are installed in the valve groove, and the reset parts are springs. One end of the spring acts on the bottom end of the feed valve, and the other end acts on the valve. The bottom of the tank; the bottom of the feed valve is also fixedly connected with a transmission chain, a chain hole for the transmission chain to pass through is opened at the bottom of the valve groove, and the other end of the transmission chain is connected with the control rod, so that when the control rod goes down When rotating, the feed valve will be driven down along the valve groove by the transmission chain to open the feed port, and when the control rod is rotated upwards, the spring will push the feed valve upward to reset. It is convenient for the feeding valve to close the feeding port; in order to facilitate the operation of the control rod by the user, a rod groove 211 is opened, and the control rod passes through the rod groove; the rod groove includes a first groove section 2111 and a second groove section 2111 and a second groove. Slot section 2112; the first slot section is arranged laterally, so that the control rod can move left and right along the first slot section to control the movement of the discharge valve; the second slot section is arranged longitudinally, so that the control rod can move along the It moves up and down with the second groove section to control the movement of the feed valve, which plays a role in limiting the control rod.

In order to facilitate the discharge of the reacted anthracite coal, a discharge channel 46 is set on the bottom surface of the reaction chamber, and the reaction chamber is connected to the heating chamber through the discharge channel, so that the reacted coal can be directly discharged into the heating chamber The secondary utilization of coal slag makes it convenient to discharge coal slag and improves the utilization rate of coal; the discharge valve is installed at the mouth of the discharge channel, and the anthracite is placed on the discharge valve and the bottom surface of the reaction chamber to react with water vapor; A movable groove 461 is set on the discharge channel, and a shaft groove for the rotation of the transmission shaft is set on the movable groove. The rotation connection between the discharge valve and the movable groove is realized through the cooperation between the shaft groove and the transmission shaft, so that the The discharge valve can move back and forth along the movable groove to open and close the discharge channel, and the cooperation between the movable groove and the discharge valve also plays a certain sealing role, and then installed between the movable groove and the discharge valve. The sealing ring further improves the air tightness between the movable tank and the discharge valve, thereby preventing the waste gas in the heating chamber from entering the reaction chamber, improving the purity of the produced water gas, and preventing air from entering the reaction chamber. Therefore, the possibility of explosion caused by the mixture of air and water gas is avoided, and the safety in the production process is greatly improved; and before the coal in the reaction chamber is discharged into the combustion chamber, it is necessary to pass water vapor for a period of time to ensure that The water gas in the reaction chamber is discharged and then the discharge channel is opened to ensure that the air will not come into contact with the water gas; in order to facilitate the wetting of the water vapor, the cinder that adheres to the discharge valve and the bottom surface of the reaction chamber is shoveled into the discharge Inside the channel, a scraper assembly is installed, the scraper assembly includes an upper scraper 463 and a lower scraper 462, wherein the upper scraper is mounted on the drive shaft and is bolted to the drive shaft, so that when the drive shaft rotates, it will Drive the upper scraper to rotate to shovel all the cinders on the bottom surface of the reaction chamber into the discharge channel, and the lower scraper is installed on both sides of the movable tank and tightly cooperates with the discharge valve, so that when the discharge valve goes into the movable tank When shrinking, the lower scraper will scrape off the cinder on the discharge valve without manual removal, which is convenient and fast, and also avoids the problem of clogging of the movable tank; A feed port is set on the reaction chamber, and a valve groove 47 is set at the feed port. The feed valve 45 is installed in the valve groove 47 and can slide up and down along the valve groove to open and close the feed port.

In order to prevent water vapor from continuously flowing into the reaction chamber and causing waste or scalding the staff when adding anthracite, a valve assembly is installed in the reaction chamber, and the valve assembly includes a baffle member 51, a movable arm 52 and a push member 53; The plate is installed on the inner wall of the reaction chamber, hingedly connected with the inner wall of the reaction chamber, and is just above the opening where the reaction chamber is connected with the steam pipe, so that the baffle can be naturally suspended under the action of gravity, and the steam The tube is closed; the movable arm is installed on the upper scraper and connected with the upper scraper screw, and the pusher is installed on the movable arm and welded with the movable arm; so that when the feeding valve needs to be opened, the upper scraper will be on the control rod. It moves under the action of the electric movable arm, thereby driving the pusher to separate from the baffle member, so that the baffle member naturally flips down under the action of gravity to close the steam pipe, and when the feed valve is closed, the pusher will Re-contact with the baffle member, push the baffle member to turn upwards, open the steam pipe, so that the water vapor can be re-introduced into the reaction chamber; wherein the push member includes an arc-shaped push section 531 and a connecting section 532, so that the push member and the baffle plate The contact between the parts is smoother, and it is more convenient to push the baffle to turn over, and the connecting section plays a supporting role for the baffle after the feed valve is closed, preventing the baffle from turning down and blocking the steam pipe , to ensure that the steam can flow into the reaction chamber smoothly.

Specifically, the purification furnace includes a reactor 31, a cooling pipe 32, a cooling chamber 33 and a water inlet pipe 39; the reactor includes a shell 311, a thermal insulation layer 312, a reaction pipe 313 and a catalyst 314; the catalyst is ferric oxide; the reaction The cooler is at least partially embedded in the cooling room, the shell plays the role of sealing and waterproofing, and the thermal insulation layer is installed in the shell, so that the shell can always be kept at a suitable temperature, which is convenient for the reaction between water gas and water vapor, and because of the reaction The reactor is embedded in the cooling chamber, and the heat dissipated from the reactor can also be absorbed by the cooling chamber, thereby improving the utilization rate of energy; one end of the reaction pipe is connected with the steam pipe and the reaction chamber, and the other end is connected with the cooling pipe , so that the water gas generated by the reaction chamber and the steam generated by the steam chamber can enter the reaction pipeline to react at the same time, and the reaction equation is CO+H ₂ 0=CO ₂ +H ₂ ; The cooling pipe is installed in the cooling chamber, so that the cooling pipe is immersed in the cooling water, so that the cooling effect of the cooling pipe is better and more comprehensive; and the cooling water heated by the gas is supplemented into the steam chamber through the water inlet pipe to supplement the water for the steam chamber , so that the water in the steam chamber is always kept at a suitable water level. Since the cooling water has been heated, adding it to the steam chamber can boil and generate steam without much energy, which plays a role in the recovery and reuse of the gas waste heat. In order to make the reaction between water vapor and water gas more efficient and sufficient; the reaction pipeline is set as a spiral pipeline, and a plurality of ventilation holes 3131 are opened on the reaction pipeline, so that the gas forms a cyclone under the action of the spiral pipeline. , so that the collision between it and the catalyst is more intense, the contact area is wider, the reaction is faster, and the utilization rate of the catalyst is higher.

In order to make the cooling effect of the cooling pipe on the gas better, the cooling pipe is set as a helical pipe, so that the contact area between the cooling pipe and the cooling water is wider, and the gas flow path is longer; The stirring device makes the cooling water flow, thereby further ensuring the cooling effect of the cooling pipe; specifically, the stirring device includes an air outlet pipe 34, a ventilation pipe 35, a windmill 36, a stirring shaft 37 and a stirring paddle 38; the air outlet pipe is connected with the cooling pipe so that the cooled gas can be purified and collected by subsequent devices (this is the prior art, which is not described in detail in this embodiment due to space reasons); the ventilation pipe is installed on the air outlet pipe, and the air outlet pipe is divided into two parts. One end of the stirring shaft is inserted into the ventilation pipe, connected with the bottom bearing of the ventilation pipe, and the other end is inserted into the cooling chamber; the windmill is installed in the ventilation pipe and is connected with the stirring shaft key, so that the air flow through the ventilation pipe is It can drive the windmill to rotate, and because the airflow velocity is not fast, the rotation speed of the windmill will not be too fast, so that the rotation speed of the stirring shaft connected with the windmill key will not be too fast; and the part of the stirring shaft located in the cooling chamber is connected with two keys. A stirring paddle, so that the stirring paddle can rotate at a low speed driven by the stirring shaft, so that the cooling water in the cooling chamber can flow under the driving of the stirring paddle, so as to ensure that the cooling water can be heated evenly and play a better role in cooling and heat absorption. At the same time, the water flow speed is not too fast, and the heat in the water is not easy to dissipate.

Example 2:

As shown in Figures 15-16, the difference between this embodiment and Embodiment 1 is that an exhaust gas treatment device is installed, and the exhaust gas treatment device includes an air duct 61, an absorption chamber 62 and a regeneration chamber 63; the absorption chamber includes a first absorption chamber 621 , the second absorption cavity 622, the third absorption cavity 623, the spray cavity 624 and the centrifugal atomizer 7; one end of the air duct is connected to the reaction chamber 21 and the heating chamber 22 respectively, and the other end of the air duct is connected to the first absorption cavity and the nozzle is installed at the bottom of the first absorption chamber, so that the gas generated in the reaction chamber and the heating chamber can be introduced into the first absorption chamber and float up from the bottom of the first absorption chamber, so that it can pass through the first absorption chamber. Longer path, better contact with the absorption liquid in the first absorption cavity, thereby ensuring that the exhaust gas in the gas can be better absorbed by the reaction, wherein the absorption liquid in the first absorption cavity and the second absorption cavity are ammonia water , plays the role of double absorption and filtration, so that the exhaust gas is treated more fully and thoroughly; the first absorption cavity and the second absorption cavity are connected through a first connecting pipe 625, and the first connecting pipe is inverted Umbrella handle type, one end of which is installed at the bottom of the first absorption cavity, so that the gas after reacting with the ammonia water in the first absorption cavity can easily enter the first connecting pipe, and the other end of the first connecting pipe penetrates into the first connecting pipe. In the second absorption cavity, the nozzle is installed near the bottom of the second absorption cavity, which also plays a role in making the gas react with the ammonia water more fully; between the second absorption cavity and the third absorption cavity, a A second connecting pipe 626 is connected, one end of the second connecting pipe is installed on the top of the second absorption cavity, so that the gas can enter better, the other end of the second connecting pipe passes through the third absorption cavity, and the nozzle is installed At a position slightly higher than the bottom, it also plays a role in making the gas and the absorption liquid react more fully. The absorption liquid in the third absorption cavity is an aqueous sodium sulfite solution; The connecting channel 628 enters the spray chamber, and the centrifugal atomizer is installed on the top of the spray chamber, so that the centrifugal atomizer can cover a wider area and have more sufficient contact with the gas, so that the exhaust gas in the gas can is better absorbed; a gas delivery pipe 627 is also installed on the top of the spray chamber, through the connection of the gas delivery pipe, the spray chamber is connected with the purification furnace, and the gas delivery pipe is installed on the spray chamber away from the connecting channel. One side, so that the gas flowing out of the connecting channel needs to go through a longer path to enter the gas pipeline, so that the gas and the mist sprayed from the centrifugal atomizer are more fully contacted and the reaction is more thorough.

Specifically, the regeneration chamber includes a catheter 631, a regeneration cavity 632 and an infusion tube 633; one end of the catheter is communicated with the third absorption cavity, and the other end is communicated with the regeneration cavity, so that the third absorption cavity reacts with the gas The sodium sulfite aqueous solution can enter the regeneration chamber through the catheter and be recycled and reused; the catheter is installed near the bottom of the third absorption chamber, and the nozzle of the second connecting pipe is installed at a position slightly higher than the bottom. position, so that the gas is not easy to enter the regeneration chamber through the catheter; the regeneration chamber is connected with the steam pipe, and the solution that has absorbed the waste gas is reduced by heating with steam; the steam pipe is installed close to the bottom of the regeneration chamber. , so that the heating is more sufficient; and since S0 ₂ will be generated in the process of reducing the solution, a gas collecting pipe 634 is installed on the top of the regeneration chamber, so as to collect the S0 ₂ gas to obtain by-products, avoiding pollution and also It plays a role in generating income; one end of the infusion tube is connected with the centrifugal atomizer, and the other end is installed near the bottom surface of the regeneration chamber, so that the reduced solution can be introduced into the centrifugal atomizer for reuse.

Specifically, the centrifugal atomizer includes an atomizing chamber 71, a driving member 72, a centrifugal fan 73 and an atomizing hole 74; the driving member is a motor purchased on the market, which is the prior art, so it is not repeated here; The atomizing chamber is connected with the infusion tube, the motor is installed in the atomizing chamber, and the centrifugal fan is keyed to the output end of the motor, so that the motor can drive the centrifugal fan to rotate; through the rotation of the centrifugal fan, a negative pressure is formed in the centrifugal fan, thereby The solution in the regeneration chamber is sucked into the atomization chamber through the infusion pipe, dispersed by the centrifugal fan, and finally sprayed from the atomization hole opened in the atomization chamber, and enters the spray chamber to absorb the waste gas in the gas; and after the reaction The mist of the spraying chamber again converges into a liquid at the bottom of the spray chamber, and flows into the third absorption chamber through the connecting channel to realize the recycling of the absorption liquid.

Claims (1)

1. A pollution-free hydrogen production system comprises a steam boiler (1), a reaction furnace (2) matched with the steam boiler (1), a purification furnace (3) communicated with the reaction furnace (2) and an exhaust gas treatment device matched with the reaction furnace (2); the method is characterized in that: the waste gas treatment device comprises a gas guide pipe (61) communicated with the reaction furnace (2), an absorption chamber (62) communicated with the gas guide pipe (61) and a regeneration chamber (63) matched with the absorption chamber (62);

the absorption chamber (62) comprises a first absorption cavity (621) communicated with the air guide pipe (61), a second absorption cavity (622) communicated with the first absorption cavity (621), a third absorption cavity (623) communicated with the second absorption cavity (622), a spraying cavity (624) communicated with the third absorption cavity (623) and a centrifugal atomizer (7) arranged in the spraying cavity (624);

the regeneration chamber (63) comprises a liquid guide pipe (631) with one end communicated with the third absorption cavity (623), a regeneration cavity (632) communicated with the other end of the liquid guide pipe (631), and a liquid conveying pipe (633) used for communicating the regeneration cavity (632) with the centrifugal atomizer (7);

the first absorption chamber (621) is in communication with the second absorption chamber (622) through a first connection pipe (625); one end of the first connection pipe (625) is arranged at the top of the first absorption cavity (621), and the other end is arranged close to the bottom of the second absorption cavity (622);

the second absorption cavity (622) is communicated with the third absorption cavity (623) through a second connecting pipe (626); one end of the second connection pipe (626) is disposed at the top of the second absorption chamber (621), and the other end is disposed close to the bottom of the third absorption chamber (623);

the regeneration cavity (632) is communicated with the steam boiler (1) through a steam pipe (12); the steam pipe (12) is arranged close to the bottom of the regeneration chamber (632); the top of the regeneration cavity (632) is provided with a gas collecting pipe (634);

the centrifugal atomizer (7) comprises an atomizing chamber (71) communicated with the infusion tube (633), a driving piece (72) arranged in the atomizing chamber (71), a centrifugal fan (73) detachably connected with the output end of the driving piece (72) and atomizing holes (74) uniformly distributed along the circumferential direction of the atomizing chamber (71);

the top of the spraying cavity (624) is provided with a gas pipe (627) communicated with the purifying furnace (3); the bottom of the spraying cavity (624) is provided with a connecting channel (628) communicated with the third absorption cavity (623); the gas conveying pipe (627) is far away from the connecting channel (628);

the reaction furnace (2) comprises a reaction chamber (21) communicated with the steam boiler (1), a heating chamber (22) arranged below the reaction chamber (21) and a switch device matched with the reaction chamber (21); the heating chamber comprises a combustion chamber (222), a slag chamber (223) and a slag discharge channel (224), an air inlet device is installed in the heating chamber, the air inlet device comprises an air inlet pipe (23), a branch air pipe (24) and an air supply part (25), the air supply part (25) is an air blower, the branch air pipe is arranged at the bottom of the combustion chamber, one end of the air inlet pipe is communicated with the air blower, the other end of the air inlet pipe is communicated with the branch air pipe, a plurality of uniformly distributed air holes (241) are formed in the branch air pipe, a flaring section (242) is formed in each air hole, and a filter screen part (243) is installed on each flaring section; the switching device comprises a discharge valve (41), a transmission assembly, a connecting rod (42), a control rod (43), a transmission chain (44) and a feeding valve (45);

a discharge channel (46) is arranged on the bottom surface of the reaction chamber, a movable groove (461) is arranged on the discharge channel, an axial groove for rotating the transmission shaft is arranged on the movable groove, and the rotary connection between the discharge valve and the movable groove is realized through the matching between the axial groove and the transmission shaft;

a scraping component is arranged in the reaction chamber and comprises an upper scraping piece (463) and a lower scraping piece (462), wherein the upper scraping piece is arranged on the transmission shaft and is in bolt connection with the transmission shaft, so that when the transmission shaft rotates, the upper scraping piece is driven to rotate;

a valve assembly is mounted in the reaction chamber, the valve assembly comprising baffle members (51), a moveable arm (52) and urging members (53); the baffle piece is arranged on the inner wall of the reaction chamber, is hinged with the inner wall of the reaction chamber and is just positioned above the opening of the reaction chamber connected with the steam pipe, so that the baffle piece can be naturally suspended under the action of gravity to seal the steam pipe; the movable arm is arranged on the upper scraping part and is connected with the upper scraping part through a screw, and the pushing part is arranged on the movable arm and is welded with the movable arm.

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