CN214694016U - Novel environment-friendly gasification furnace - Google Patents
Novel environment-friendly gasification furnace Download PDFInfo
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- CN214694016U CN214694016U CN202120360904.0U CN202120360904U CN214694016U CN 214694016 U CN214694016 U CN 214694016U CN 202120360904 U CN202120360904 U CN 202120360904U CN 214694016 U CN214694016 U CN 214694016U
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Abstract
The invention relates to the technical field of gasification furnaces, in particular to a novel environment-friendly gasification furnace, wherein the disposal rate of the gasification furnace can reach 1-50 tons/day according to the design size, and the gasification furnace is suitable for carrying out harmless on-site disposal of wastes at a waste source; the temperature monitoring probe and the pressure monitoring probe can feed back data in real time, so that working conditions such as a stockpiling temperature interval, a gas production interval, a stockpiling height interval, an ash discharge rate and the like in the furnace can be controlled conveniently; the water, tar and dust in the generated flue gas can be effectively recovered through the structural design of the three-layer cylinder in the gasification furnace main body and the return device; the bottom of the gasification furnace main body is operated by a slag breaker in the ash discharging device, so that the tailings falling into the ash bucket can be continuously decomposed into inorganic tailings in a high-temperature aerobic environment, and the reduction of materials is improved; the structure and the working principle of the gasifier body can effectively avoid the generation condition of dioxin, and realize the harmless disposal of organic matters.
Description
Technical Field
The invention relates to the technical field of gasification furnaces, in particular to a novel environment-friendly gasification furnace.
Background
Solid waste is one of the important sources forming the great environmental pressure of the 'refuse city enclosing' in China. The total yield of organic solid wastes such as industrial sources, daily living sources, agricultural and animal husbandry sources and the like in China exceeds 60 hundred million tons, and accounts for more than 60 percent of the total yield of the solid wastes. At present, the yield of organic solid wastes in municipal waste treatment in China is large, harmless treatment becomes a key of a urbanization process, and the improvement of a technical short plate and the enhancement of resource utilization efficiency are urgently needed. In the aspect of industrial solid waste, production areas are scattered, pollution is serious, solid waste treatment is urgently needed to be solved, but the short treatment technology still restricts the industrial development. On the other hand, the agricultural organic solid waste treatment capacity is increasing day by day, the production places are scattered, and the comprehensive utilization is low. In addition, the sources of the worthless solid wastes (the solid wastes with low recycling value or high disposal cost) in the urban and rural domestic wastes are numerous and huge, and the existing waste incineration and landfill sites cannot be largely consumed. The problems cause a large amount of overstocked solid wastes, form serious pollution threat to the environment of China, inhibit the high-quality development of economy and influence the happiness of people. Due to national conditions, the solid waste generation sources in China are numerous, with the vigorous development of economy, the production of various types is continuously increased, and the pressure for treating the solid waste is continuously increased, so that the problem of treating the solid waste becomes one of the focus problems for restricting the environmental protection in China. In addition, the existing solid waste treatment and incineration facilities and equipment have the problems of unstable technology, unclosed process, incapability of continuously reaching the standard of toxic gas emission, excessive dust, unscientific operation and the like for a long time, and the serious environmental protection events frequently occur to become direct factors of the 'approach phenomenon', further influence the scientific planning of urban and rural environmental protection in China and influence the image of local governments in people.
Aiming at the characteristics of dispersed sources, high centralized treatment cost and high danger of organic solid wastes, the organic solid waste treatment in China urgently needs to be small and medium-sized and has technical passing, and is suitable for harmless treatment at the sources and an organic solid waste treatment technology for realizing on-site treatment and on-site reduction.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
A novel environment-friendly gasification furnace comprises a gasification furnace main body, wherein a feeding device, a transmission device, an air guide device, an air inlet device, a furnace returning device and an ash discharging device are arranged on the gasification furnace main body; the upper end of the gasification furnace main body is provided with a furnace cover, the feeding device is arranged on the right side of the furnace cover, and the transmission device is arranged at the upper end of the furnace cover; the furnace returning device and the air inlet device are both arranged on the left side of the gasification furnace main body, and the air inlet device is arranged below the furnace returning device; the ash discharging device is arranged at the lower end of the gasification furnace main body; a chamber is arranged in the gasification furnace main body, and the air guide device is arranged in the chamber; a chamber is arranged in the gasification furnace main body, and the air guide device is arranged in the chamber; the gasification furnace main body is composed of three layers of cylinders, a water-cooling interlayer is arranged between the outermost layer cylinder and the middle layer cylinder, an outer discharge interlayer is arranged between the innermost layer cylinder and the top of the middle layer cylinder, and an exhaust pipe is arranged between the innermost layer cylinder and the side part of the middle layer cylinder; a water inlet pipe and a water outlet pipe are arranged on the outer side of the outer cylinder, the water inlet pipe and the water outlet pipe are both connected with the water-cooling interlayer, and a gas collecting hood is arranged inside the innermost cylinder; the transmission device consists of a lifting flame stabilizer, a rotary material homogenizer, a dome breaking rod and a material homogenizing disc, wherein the rotary material homogenizer is arranged at the lower end of the lifting flame stabilizer, the material homogenizing disc is arranged at the lower end of the rotary material homogenizer, the material homogenizing disc is arranged in the chamber cavity, the dome breaking rod is arranged at the lower end of the material homogenizing disc, and the lower end of the dome breaking rod penetrates through the lower end of the furnace cover; the lifting flame stabilizer drives the homogenizing disc and the dome breaking rod to lift, and the rotary homogenizer drives the homogenizing disc and the dome breaking rod to rotate.
Further, feed arrangement is including screw conveyer, feeder hopper, sealing gate valve, and screw conveyer installs at the bell lateral part, and the feeder hopper is installed in screw conveyer upper end, and sealing gate valve installs in the feeder hopper upper end.
Furthermore, the air guide device comprises a plurality of air guide tubes and connecting pieces, and the air guide tubes are connected through the connecting pieces; the top end of the air duct is in a sharp conical head shape, holes are spirally formed in the air duct from the top to the bottom, the holes are horizontally inclined downwards, and the bottom end of the air duct is closed.
Furthermore, the air inlet device comprises an air blower and an igniter, the air blower is arranged on the outer side of the gasification furnace main body, the igniter is arranged in the chamber, the igniter is arranged below the air guide pipe, a pipeline is arranged on the air blower, and the pipeline is communicated with the chamber; the air blower is provided with a frequency converter.
Further, the furnace returning device comprises an induced draft fan, an air outlet pipe is arranged at the upper end of the induced draft fan and communicated with the exhaust pipe, a tar interceptor, an electric gate valve and a tar self-absorption furnace returning pipeline are arranged at the lower end of the induced draft fan, the tar self-absorption furnace returning pipeline is installed between the electric gate valve and the tar interceptor, and the end part of the tar self-absorption furnace returning pipeline is communicated with a chamber cavity between the gas collecting hood and the gas guide pipe.
Furthermore, the ash discharging device comprises an ash bucket, a slag breaker and a spiral ash remover, wherein the ash bucket is arranged at the lower end of the main body of the gasification furnace, the spiral ash remover is arranged at the side end of the ash bucket, and the slag breaker is arranged at the lower end of the gas guide pipe.
Further, the gasifier main body is provided with a temperature and pressure monitoring device, the temperature and pressure monitoring device comprises a temperature monitoring probe and a pressure monitoring probe, the temperature monitoring probe is installed on the inner wall of the gasifier main body, and the pressure monitoring probe is installed on the air outlet pipe.
Furthermore, supporting legs are arranged on the periphery of the outer wall of the gasification furnace main body.
The invention has the beneficial effects that: the gasification furnace comprises a gasification furnace main body, wherein a feeding device, a transmission device, an air guide device, an air inlet device, a furnace returning device and an ash discharging device are arranged on the gasification furnace main body; the upper end of the gasification furnace main body is provided with a furnace cover, the feeding device is arranged on the right side of the furnace cover, and the transmission device is arranged at the upper end of the furnace cover; the furnace returning device and the air inlet device are both arranged on the left side of the gasification furnace main body, and the air inlet device is arranged below the furnace returning device; the ash discharging device is arranged at the lower end of the gasification furnace main body; a chamber is arranged in the gasification furnace main body, and the air guide device is arranged in the chamber; compared with the prior art, the invention has the advantages that: 1. the disposal rate of the gasification furnace can reach 1-50 tons/day according to the design size, and the gasification furnace is suitable for harmless on-site disposal of wastes at a waste source. 2. The invention has the advantages that a complete interference control system is formed by five items of the transmission device, the gas guide device, the gas inlet device, the furnace returning device and the ash discharging device on the gasification furnace main body, and the temperature monitoring probe and the pressure monitoring probe are added for feeding back real-time data of temperature and pressure, so that the working conditions of a material stacking temperature interval, a gas generating interval, a material stacking height interval, an ash discharging speed and the like in the furnace are conveniently controlled, and the environmental protection, the production continuity and the safety stability of the invention are realized. 3. The gasifier body is internally formed by three layers of cylinders and the structural design of the return device can effectively recover moisture, tar and dust in the generated flue gas, the combustible gas in the flue gas led out by the gas outlet pipe has high purity and few harmful components, the secondary combustion utilization is facilitated, and the requirement and the cost of the rear end are reduced. 4. The bottom of the gasification furnace main body is operated by a slag breaker in the ash discharging device, so that the tailings falling into the ash bucket can be continuously decomposed into inorganic tailings in a high-temperature aerobic environment, the reduction of materials is improved, and the subsequent treatment requirement and cost of the tailings are reduced. 5. The structure and the working principle of the gasifier main body can effectively avoid the generation condition of dioxin, and dioxin is not generated on the technical basis, so that the harmless disposal of organic matters is realized.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a partial structure of a gasification furnace main body.
Fig. 3 is a schematic structural diagram of a feeding device.
Fig. 4 is a schematic diagram of the transmission structure.
FIG. 5 is a schematic view of the gas guide structure.
Fig. 6 is a schematic structural view of the air intake device.
FIG. 7 is a schematic view of the structure of the melting-back device.
FIG. 8 is a schematic view of the ash discharge device.
The attached figures in the drawing are respectively marked as follows: gasifier body-1, feeding device-2, transmission device-3, gas guide device-4, gas inlet device-5, furnace returning device-6, ash discharging device-7, furnace cover-8, temperature and pressure monitoring device-9, cylinder-11, water cooling interlayer-12, outer discharging interlayer-13, gas discharging pipe-14, water inlet pipe-15, water discharging pipe-16, gas collecting hood-17, supporting leg-18, spiral conveyor-21, feed hopper-22, sealing gate valve-23, lifting gas stabilizer-31, rotary refiner-32, dome breaking rod-33, refining disc-34, gas guide pipe-41, connecting piece-42, hole-43, blower-51, igniter-52, pipeline-53, gas guide device-4, gas inlet device-5, gas returning device-6, ash discharging device-7, furnace cover-8, temperature and pressure monitoring device-9, cylinder-11, water cooling interlayer-12, outer discharging interlayer-13, gas discharging pipe-41, connecting piece-42, hole-43, blower-51, igniter-52, pipeline-53, gas guide device-32, and gas guide device, An induced draft fan-61, an air outlet pipe-62, a tar interceptor-63, an electric gate valve-64, a tar self-suction return pipe-65, an ash bucket-71, a slag breaker-72 and a spiral ash remover-73.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the invention includes a gasification furnace main body 1, the gasification furnace main body 1 is provided with a feeding device 2, a transmission device 3, an air guide device 4, an air inlet device 5, a furnace returning device 6 and an ash discharging device 7; the upper end of the gasification furnace main body 1 is provided with a furnace cover 8, the feeding device 2 is arranged on the right side of the furnace cover 8, and the transmission device 3 is arranged at the upper end of the furnace cover 8; the furnace returning device 6 and the air inlet device 5 are both arranged on the left side of the gasification furnace main body 1, and the air inlet device 5 is arranged below the furnace returning device 6; the ash discharging device 7 is arranged at the lower end of the gasification furnace main body 1; a chamber is arranged in the gasification furnace main body 1, and the air guide device 4 is arranged in the chamber;
the temperature of the flue gas entering the gas outlet pipe 62 from the upper end is reduced to below 80 ℃ by the gasifier body 1 through the water-cooling interlayer 12 and the gas-collecting hood 17, so that the vaporized tar and smoke dust mixture is effectively condensed on the wall surface of the gas-collecting hood 17 and the water-cooling interlayer 12 and then returns to the gasifier and is decomposed again, the problem that the content of tar and dust in the combustible gas generated in the gasification cracking process is too high is solved, and the problems that the content of harmful substances such as dioxin substances, dust, smoke tar and the like in the flue gas generated by the similar gasification cracking technology is large and the rear end is difficult to place are solved.
The feeding device 2 is controlled by the switch of the sealing gate valve 23 and the screw conveyor 21, so that no gas can enter and exit from the feed inlet of the gasification furnace in the feeding process, and the influence on the working condition in the furnace is avoided.
The transmission device 3 timely interferes with the working condition along with the disposal condition of the materials, ensures that the materials are sufficient in the gasification furnace main body 1 and are quickly gasified and cracked in a high-temperature oxygen-free environment to form a gasification layer and a cracking layer with certain heights, generates a large amount of combustible gas, and simultaneously ensures the compactness and stable working condition of the stockpile to meet the requirement of continuous and sufficient pyrolysis and gasification;
the gas guide device 4 provides a channel for the gas generated by the gasification layer and mainly comprising carbon monoxide and carbon dioxide to escape from the hot melting layer to the cracking layer, wherein the carbon dioxide gas performs reduction reaction with organic matters in a high-temperature oxygen-free state in the cracking layer to generate combustible gas such as carbon monoxide, and the like, thereby solving the problems of unsmooth gas guide below the hot melting layer and insufficient utilization, and simultaneously avoiding the potential safety hazard caused by the enrichment of the gas at the lower part of the fuel.
The ash discharging device 7 can utilize the slag breaker 72 to break a tower bridge structure formed by burning materials at the bottom of the burning layer, so that part of the materials fall into the ash bucket 71, and tailings in the ash bucket 71 are still in a high-temperature aerobic environment and can be continuously decomposed into inorganic tailings, thereby improving the reduction of the materials and reducing the subsequent treatment requirement and cost of the tailings. Meanwhile, after the structure of the combustion layer is damaged, the furnace stack body moves towards the furnace bottom under the action of the transmission device 3, so that the operation of continuously feeding materials into the furnace can be implemented, and the production continuity is realized.
The left side of the air outlet pipe 62 is connected with a tar interceptor 63 which can intercept and recover tar, water vapor and dust in the flue gas again, and an electric gate valve 64 can be opened at regular time, so that the intercepted and collected tar and other substances return to the combustion layer area in the furnace for decomposition again through a tar self-absorption return pipeline. The left end of the furnace returning device 6 is connected with an induced draft fan 61 and always runs to keep a micro negative pressure state in the furnace, and a temperature and pressure monitoring device 9 is adopted for real-time monitoring. The method solves the problem of over high content of tar and dust in the combustible gas generated in the gasification cracking process, and solves the problems of high content of harmful substances such as dioxin substances, dust, tar and the like in the flue gas generated by the similar gasification cracking technology and difficult rear-end arrangement.
The gasification environment in the gasification furnace main body 1 is high-temperature anaerobic gasification cracking, a draught fan 61 is externally connected to maintain a micro negative pressure state in the gasification furnace, the gasification rate and the reduction efficiency are high in efficiency, the disposal rate can reach 1-50 tons/day according to the design size, the production continuity and the safety stability are realized, and the gasification furnace is suitable for the on-site disposal of wastes from a waste production source.
The outer wall of the gasification furnace main body 1 is provided with support legs 18, and the support legs 18 are used for supporting the gasification furnace main body 18.
The action principle is as follows: when the equipment starts to operate, the feeding device 2 starts to work, the sealing gate valve 23 is opened, the materials continuously enter the feeding hopper 22 from the top and are extruded and input into the chamber cavity by the screw conveyor 21, the transmission device 3 utilizes the lifting flame stabilizer 31, the rotary material homogenizer 32, the material homogenizing disc 34 and the dome breaking rod 33 at the lower end to sweep and extrude the materials in the feeding process, so that the materials form a uniform pile with certain compactness in the furnace from top to bottom, the feeding is stopped after the materials in the furnace are added to a saturated state, and the sealing gate valve 23 and the screw conveyor 21 are closed; the igniter 52 starts to ignite the bottommost material in the furnace and stops working; after the igniter 52 stops working, the furnace stack body uniformly forms a combustion layer, a hot melting layer, a gasification layer, a cracking layer and a drying layer from bottom to top in a short time. The air blower 51 controls the introduced air to control the combustion state and temperature change of the material according to the frequency conversion of the detection data of the temperature and pressure monitoring device 9, and meanwhile, the air outlet pipe 62 can be externally connected with the induced draft fan 61 and adjusts the chamber cavity according to the frequency conversion control of the detection data of the temperature and pressure monitoring device 9, so that the chamber cavity is in a micro negative pressure state. In the whole production process, the blower 51 only needs to maintain the low-frequency air supply working state, the power consumption is low, and the heat energy in the furnace is mainly generated by spontaneous combustion of the pile body. In the production process, the feeding device 2 and the transmission device 3 are matched to feed materials into a chamber cavity at regular time and maintain stockpile forming, the slag breaker 72 is used for destroying the slag structure at the bottom of a combustion layer and falling into the ash hopper 71 for continuous combustion and decomposition, the ash discharging device 7 is used for discharging ash at regular time, and the operation of the devices is matched to enable a stack body to sink continuously in the reaction process so as to solve the problems of continuous increase and insufficient combustion of the combustion layer of the stack body. The gas guide device 4 is used for providing a channel for the gas generated by the gasification layer and mainly comprising carbon monoxide and carbon dioxide to escape from the hot melting layer to the cracking layer, wherein the carbon dioxide gas is subjected to reduction reaction with organic matters in a high-temperature oxygen-free state in the cracking layer to generate combustible gas such as carbon monoxide, and the like, so that the problems of unsmooth gas guide and insufficient utilization below the hot melting layer are solved, and the potential safety hazard caused by the enrichment of gas at the lower part of the fuel is avoided. The left side of the air outlet pipe 62 is connected with a tar interceptor 63 through a guide pipe to intercept and recover tar, water vapor and dust in the flue gas again, and an electric gate valve 64 can be opened at regular time to enable substances such as the intercepted tar to return to the combustion layer area in the furnace for secondary decomposition through a tar self-absorption return pipeline. The left end of the furnace returning device 6 is connected with an induced draft fan 61 and always runs to keep a micro negative pressure state in the furnace, and a pressure monitoring probe is adopted for real-time monitoring. The temperature of the flue gas entering the gas outlet pipe 62 from the upper end of the gasification furnace main body 14 can be reduced to be below 80 ℃, so that the vaporized tar and smoke dust mixture is effectively condensed in the gas collecting hood 17 and the water-cooling interlayer 12 and then returns to the furnace for being decomposed again. The gasifier main body 1 and the furnace returning device 6 can effectively solve the problem of high content of combustible gas tar and dust generated in the cracking gasification process, and solve the problems of high content of harmful substances such as dioxin substances, dust, tar and the like in the smoke generated by the similar gasification cracking technology and difficult rear-end arrangement.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A novel environment-friendly gasification furnace is characterized in that: the gasification furnace comprises a gasification furnace main body, wherein a feeding device, a transmission device, an air guide device, an air inlet device, a furnace returning device and an ash discharging device are arranged on the gasification furnace main body;
the upper end of the gasification furnace main body is provided with a furnace cover, the feeding device is arranged on the right side of the furnace cover, and the transmission device is arranged at the upper end of the furnace cover; the furnace returning device and the air inlet device are both arranged on the left side of the gasification furnace main body, and the air inlet device is arranged below the furnace returning device; the ash discharging device is arranged at the lower end of the gasification furnace main body;
a chamber is arranged in the gasification furnace main body, and the air guide device is arranged in the chamber; the gasification furnace main body is composed of three layers of cylinders, a water-cooling interlayer is arranged between the outermost layer cylinder and the middle layer cylinder, an outer discharge interlayer is arranged between the innermost layer cylinder and the top of the middle layer cylinder, and an exhaust pipe is arranged between the innermost layer cylinder and the side part of the middle layer cylinder; a water inlet pipe and a water outlet pipe are arranged on the outer side of the outer cylinder, the water inlet pipe and the water outlet pipe are both connected with the water-cooling interlayer, and a gas collecting hood is arranged inside the innermost cylinder;
the transmission device comprises a lifting flame stabilizer, a rotary material homogenizer, a dome breaking rod and a material homogenizing disc, wherein the rotary material homogenizer is arranged at the lower end of the lifting flame stabilizer, the material homogenizing disc is arranged at the lower end of the rotary material homogenizer, the material homogenizing disc is arranged in the chamber cavity, the dome breaking rod is arranged at the lower end of the material homogenizing disc, and the lower end of the dome breaking rod penetrates through the lower end of the furnace cover; the lifting flame stabilizer drives the homogenizing disc and the dome breaking rod to lift, and the rotary homogenizer drives the homogenizing disc and the dome breaking rod to rotate.
2. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the feeding device comprises a screw conveyor, a feeding hopper and a sealing gate valve, wherein the screw conveyor is arranged on the side part of the furnace cover, the feeding hopper is arranged at the upper end of the screw conveyor, and the sealing gate valve is arranged at the upper end of the feeding hopper.
3. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the air guide device comprises a plurality of air guide tubes and connecting pieces, and the air guide tubes are connected through the connecting pieces; the top end of the air duct is in a sharp conical head shape, holes are spirally formed in the air duct from the top to the bottom, the holes are horizontally inclined downwards, and the bottom end of the air duct is closed.
4. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the air inlet device comprises an air blower and an igniter, the air blower is arranged on the outer side of the gasification furnace main body, the igniter is arranged in the chamber cavity, the igniter is arranged below the air guide pipe, a pipeline is arranged on the air blower, and the pipeline is communicated with the chamber cavity; the air blower is provided with a frequency converter.
5. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the recycling device comprises an induced draft fan, an air outlet pipe is arranged at the upper end of the induced draft fan and communicated with the air outlet pipe, a tar interceptor, an electric gate valve and a tar self-absorption recycling pipeline are arranged at the lower end of the induced draft fan, the tar self-absorption recycling pipeline is arranged between the electric gate valve and the tar interceptor, and the end part of the tar self-absorption recycling pipeline is communicated with a chamber cavity between the gas-collecting hood and the gas guide pipe.
6. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the ash discharging device comprises an ash bucket, a slag breaker and a spiral ash remover, wherein the ash bucket is arranged at the lower end of the gasifier main body, the spiral ash remover is arranged at the side end of the ash bucket, and the slag breaker is arranged at the lower end of the gas guide pipe.
7. The novel environment-friendly gasification furnace according to claim 1, characterized in that: the gasifier main part is provided with a temperature monitoring device and a pressure monitoring device, the temperature monitoring device and the pressure monitoring device comprise a temperature monitoring probe and a pressure monitoring probe, the temperature monitoring probe is arranged on the inner wall of the gasifier main part, and the pressure monitoring probe is arranged on the air outlet pipe.
8. The novel environment-friendly gasification furnace according to claim 1, characterized in that: supporting legs are arranged on the periphery of the outer wall of the gasification furnace main body.
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| CN202120360904.0U CN214694016U (en) | 2021-02-07 | 2021-02-07 | Novel environment-friendly gasification furnace |
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