VOCS waste gas adsorption catalytic combustion device and working method thereof

Abstract

The invention discloses a VOCS waste gas adsorption catalytic combustion device and a working method thereof.The VOCS waste gas adsorption catalytic combustion device comprises a working support, an adsorption concentration furnace is installed on the working support and comprises a concentration furnace body, and an outer heat insulation cylinder, an activated carbon rotary cylinder and an inner heat insulation cylinder are sequentially arranged in the concentration furnace body in a coaxial structure from outside to inside in a sleeved mode; a plurality of outer partition plates are installed on the inner periphery of the outer heat insulation barrel, a plurality of inner partition plates are installed on the inner periphery of the inner heat insulation barrel, the inner partition plates correspond to the outer partition plates one to one, outer flow guide partition plates and outer steering partition plates are arranged between the adjacent outer partition plates, and inner flow guide partition plates and inner steering partition plates are arranged between the adjacent inner partition plates. A waste gas diversion pipe, a desorption exhaust pipe, a steam diversion pipe, a cooling exhaust pipe, an air diversion pipe and an adsorption exhaust pipe are sequentially arranged and communicated at the periphery of the adsorption concentration furnace, so that the treatment capacity and the treatment efficiency can be improved, the transportation process of blending and transferring adsorption substances can be omitted, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and specifically relates to a VOCS waste gas adsorption catalytic combustion device and its working method. Background Art

[0002] The catalytic combustion method enables organic waste gas to undergo flameless combustion at a relatively low ignition temperature with the aid of a catalyst, and oxidizes and decomposes into CO2 and H2O, while releasing a large amount of heat energy, which is more energy-saving.

[0003] The application document with the publication number CN117919867A discloses a filtering catalytic combustion device for waste gas treatment. The filtering catalytic combustion device for waste gas treatment includes a frame and a fan installed on one side of the frame; a catalytic filter cartridge is installed on the first support; a packing column is rotatably installed on the second support, and the outer wall of the packing column is slidably matched with both sides of the feed through groove. A plurality of packing cavities are evenly formed on the packing column. One end of the packing column is provided with corresponding air guiding holes on one side of the plurality of packing cavities. Packing grooves are evenly and equally spaced on both sides of the plurality of packing cavities, and catalytic components are installed in the packing grooves. The catalytic components include side clamping pieces, and the side clamping pieces are embedded in the packing grooves, and packing plate frames are movably inserted into the two opposite side clamping pieces in the same packing cavity.

[0004] Based on the above patent and the prior art, the following problems are obtained: Problem 1: Since the activated carbon plates and catalyst plates in the above patent application are mixed alternately, the above patent cannot treat a large amount of low-concentration waste gas. At the same time, the high temperature in the catalytic reaction process easily causes the activated carbon to fail, resulting in poor adsorption effect. Problem 2: Since the catalytic reaction process is simply carried out and there is a lack of a structure for waste heat recovery, a large amount of heat loss occurs, the generated heat cannot be fully utilized, and the working efficiency is low. Problem 3: Since the catalytic structure is simply designed, the utilization efficiency of the catalyst is low, reducing the overall working efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a VOCS waste gas adsorption catalytic combustion device and its working method to solve the above-mentioned existing problems and deficiencies, and improve the overall working efficiency.

[0006] The present invention solves at least one of the following technical problems: (1) Since the activated carbon plates and catalyst plates in the above patent application are mixed alternately, the above patent cannot treat a large amount of low-concentration waste gas. At the same time, the high temperature in the catalytic reaction process easily causes the activated carbon to fail, resulting in poor adsorption effect. (2) Since only a simple catalytic reaction process is carried out and there is a lack of a structure for waste heat recovery, a large amount of heat loss is caused, the generated heat cannot be fully utilized, and the working efficiency is low. (3) Since the catalytic structure is simply designed, the utilization efficiency of the catalyst is low, which reduces the overall working efficiency.

[0007] The object of the present invention can be achieved by the following technical solutions: A VOCS waste gas adsorption catalytic combustion device, including a working bracket, on which an adsorption concentrator furnace is installed. The adsorption concentrator furnace includes a concentrator furnace body. Inside the concentrator furnace body, an outer heat insulation cylinder, an activated carbon rotating cylinder, and an inner heat insulation cylinder are sequentially sleeved from outside to inside in a coaxial structure. A plurality of outer partition plates are installed on the inner circumference of the outer heat insulation cylinder, and a plurality of inner partition plates are installed on the inner circumference of the inner heat insulation cylinder. The inner partition plates correspond to the outer partition plates one by one. An outer diversion partition plate and an outer turning partition plate are provided between adjacent outer partition plates, and an inner diversion partition plate and an inner turning partition plate are provided between adjacent inner partition plates. A catalytic oxidation furnace is provided on one side of the working bracket. An exhaust gas shunt pipe, a desorption exhaust pipe, a steam shunt pipe, a cooling exhaust pipe, an air shunt pipe, and an adsorption exhaust pipe are sequentially arranged and connected to the outer circumference of the adsorption concentrator furnace.

[0008] As a further solution of the invention, there are three outer partition plates, and the inner cavity of the outer heat insulation cylinder is divided into three chambers by the plane where the outer partition plates are located. The exhaust gas shunt pipe and the adsorption exhaust pipe, the steam shunt pipe and the desorption exhaust pipe, and the air shunt pipe and the cooling exhaust pipe are respectively grouped, and each group of pipes corresponds to one chamber one by one. The exhaust gas shunt pipe is connected to the outer heat insulation cylinder through an exhaust gas inlet pipe, the steam shunt pipe is connected to the outer heat insulation cylinder through a steam inlet pipe, the desorption exhaust pipe is connected to the outer heat insulation cylinder through a mixed gas exhaust pipe, the cooling exhaust pipe is connected to the outer heat insulation cylinder through a heat conduction exhaust pipe, the air shunt pipe is connected to the outer heat insulation cylinder through a cooling inlet pipe, and the adsorption exhaust pipe is connected to the outer heat insulation cylinder through a confluence exhaust pipe. The exhaust gas inlet pipe, the confluence exhaust pipe, the steam inlet pipe, the mixed gas exhaust pipe, the cooling inlet pipe, and the heat conduction exhaust pipe are all evenly distributed at equal distances.

[0009] As a further solution of the invention, outer sealing rings are fixedly connected to the inner circumferences at both ends of the outer heat insulation cylinder, sealing rotating rings are fixedly connected to the surfaces at both ends of the activated carbon rotating cylinder, inner sealing rings are fixedly connected to the outer circumferences at both ends of the inner heat insulation cylinder. The outer circumference of the sealing rotating ring is in sealed rotational connection with the outer sealing ring and the inner circumference is in sealed rotational connection with the inner sealing ring. The outer diversion partition plates and the outer turning partition plates between adjacent outer partition plates are evenly staggered. The outer diversion partition plates and the inner turning partition plates, and the outer turning partition plates and the inner diversion partition plates respectively correspond to each other. A support rod is fixedly penetrated inside the inner heat insulation cylinder, and the adsorption concentrator furnace is fixed on the working bracket through the support rod. A motor for driving the activated carbon rotating cylinder to rotate is installed on one side of the working bracket.

[0010] As a further aspect of the invention, a first heat exchanger, a second heat exchanger and a third heat exchanger are provided on one side of the catalytic oxidation furnace. The steam outlet of the catalytic oxidation furnace is communicated with a steam shunt pipe through a steam conduit. The desorption exhaust pipe is communicated with the mixed gas inlet of the third heat exchanger through a mixed gas conduit. The exhaust gas outlet of the third heat exchanger is communicated with the exhaust gas inlet of the catalytic oxidation furnace through a concentration conduit. The tail gas outlet of the catalytic oxidation furnace is communicated with the tail gas inlet of the second heat exchanger through a tail gas conduit. The tail gas outlet of the second heat exchanger is communicated with a second exhaust pipe.

[0011] As a further aspect of the invention, a heat dissipation air pump and an exhaust gas tank are provided on one side of the adsorption and concentration furnace. The exhaust gas tank conveys low-concentration exhaust gas to the exhaust gas shunt pipe. The heat dissipation air pump is communicated with the air shunt pipe. The adsorption exhaust pipe is communicated with a third exhaust pipe. The cooling exhaust pipe is communicated with the air inlet of the first heat exchanger through a heat dissipation conduit. The exhaust port of the first heat exchanger is communicated with a first exhaust pipe. The water inlet of the first heat exchanger absorbs water through a water inlet pipe. The water outlet of the first heat exchanger is communicated with a total shunt pipe. The total shunt pipe is communicated with the water inlet of the third heat exchanger through a first shunt pipe. The total shunt pipe is communicated with the water inlet of the second heat exchanger through a second shunt pipe. The water inlet of the catalytic oxidation furnace is sequentially communicated with a total water supply pipe and a heat-resistant liquid pump. The water inlet of the heat-resistant liquid pump is communicated with a total confluence pipe. The total confluence pipe is communicated with the water outlet of the third heat exchanger through a first confluence pipe. The total confluence pipe is communicated with the water outlet of the second heat exchanger through a second confluence pipe.

[0012] As a further aspect of the invention, a condensation water hopper is communicated with the bottom of the third heat exchanger.

[0013] As a further aspect of the invention, the catalytic oxidation furnace includes a sealed furnace body. Inside the sealed furnace body, a support air inlet hopper, a first evaporation tray, a second evaporation tray, a catalyst tray and a support exhaust hopper are sequentially arranged from bottom to top. The first evaporation tray and the second evaporation tray are evenly staggered and have a hollow structure inside. The catalyst tray is installed between adjacent first evaporation trays and second evaporation trays. The first evaporation tray, the second evaporation tray and the catalyst tray are vertically coaxially and evenly arranged, and a steam conduit passes through the centers of them. A plurality of steam ports are opened on the side wall of the steam conduit. The steam conduit is communicated with the first evaporation tray and the second evaporation tray through the steam ports. A first conduit is passed through the first evaporation tray. A second conduit is passed through the second evaporation tray. The first evaporation tray is sealed with the first conduit. The second evaporation tray is sealed with the second conduit. A shunt annular pipe is sleeved on the outer periphery of the support air inlet hopper. A plurality of shunt vertical pipes are communicated with the upper side of the shunt annular pipe. A plurality of shunt conduits are communicated with the shunt vertical pipes. The shunt vertical pipes are communicated with the first evaporation tray and the second evaporation tray through the shunt conduits. The support air inlet hopper is communicated with the concentration conduit. The support exhaust hopper is communicated with the tail gas conduit. The steam conduit is communicated with the steam conduit.

[0014] As a further solution of the invention, a rectifying arc mask is provided at the pipe mouth of the concentrated air duct located inside the support air intake hopper, and a number of uniformly distributed rectifying mesh holes are provided on the rectifying arc mask.

[0015] As a further solution of the invention, an outer support ring is sleeved on the outer periphery of the catalyst disk, and an inner support ring is sleeved on the inner periphery of the catalyst disk. The catalyst disk is kept sealed and supported by the outer support ring and the inner support ring. The first air duct and the second air duct are uniformly staggered with each other, and the distance between adjacent first air ducts is at least the diameter of the second air duct.

[0016] A working method of a VOCS waste gas adsorption catalytic combustion device includes the following steps: Step 1: The waste gas tank uniformly inputs the waste gas into the outer heat insulation cylinder through the waste gas shunt pipe, and uniformly blows it onto the activated carbon rotating cylinder through the waste gas shunt pipe. The harmful substances in the waste gas are first absorbed by the area of the activated carbon rotating cylinder facing the waste gas shunt pipe, and then the air flow is continuously deflected through the outer diversion partition, the outer turning partition, the inner diversion partition and the inner turning partition, so that the air flow flows towards the adsorption exhaust pipe and is then discharged through the adsorption exhaust pipe; Step 2: After the area of the activated carbon rotating cylinder that absorbs waste gas in Step 1 is filled with harmful substances, the activated carbon rotating cylinder rotates under force, so that the area full of harmful substances moves towards the steam shunt pipe. The catalytic oxidation furnace produces steam and injects it into the steam shunt pipe, and uniformly blows it onto the area of the activated carbon rotating cylinder full of harmful substances through the steam shunt pipe. The harmful substances are desorbed from the activated carbon by the steam and flow towards the desorption exhaust pipe with the air flow, and are then discharged through the desorption exhaust pipe; Step 3: The mixture of steam and high-concentration waste gas discharged from the desorption exhaust pipe is dewatered and then discharged into the catalytic oxidation furnace for catalytic flameless combustion to generate harmless tail gas and produce a large amount of heat, and this heat is used to produce steam; Step 4: The area that has been purged and desorbed by steam in Step 2 moves towards the air shunt pipe with the rotation of the activated carbon rotating cylinder. The air shunt pipe blows air at a temperature of at most normal temperature onto the area that has absorbed a small amount of steam heat to cool the heated area, and makes the heat move to the cooling exhaust pipe with the air flow and is discharged through the cooling exhaust pipe, so as to cool the activated carbon rotating cylinder. The activated carbon that has been cooled and restored continues to rotate towards the waste gas shunt pipe with the rotation, so as to continuously concentrate the waste gas and maintain high efficiency and high throughput.

[0017] The beneficial effects of the present invention: (1) A large amount of low-concentration waste gas is absorbed and stored by the waste gas tank. At the same time, the waste gas tank transmits and transports the low-concentration waste gas. The waste gas tank evenly inputs the waste gas into the outer insulation cylinder through the waste gas diversion pipe, and evenly distributes the waste gas inlet pipe to the block on the activated carbon drum facing the waste gas inlet pipe. The block on the activated carbon drum facing the waste gas diversion pipe first absorbs the harmful substances in the waste gas. After being filled with harmful substances, the activated carbon drum is forced to rotate, so that the full The block of harmful substances moves to the steam diversion pipe. At this time, there is a continuous flow of steam between the steam diversion pipe and the desorption exhaust pipe. Steam is produced by the catalytic oxidation furnace. The steam is injected into the steam diversion pipe through the steam air guide pipe. During the injection, the exhaust gas is evenly blown to the block on the activated carbon drum facing the steam inlet pipe through the equidistant distribution of the steam inlet pipe. The steam desorbs the harmful substances from the activated carbon, and the block on the activated carbon drum facing the steam inlet pipe desorbs the absorbed harmful substances first. The air in the activated carbon drum is then blown away by the airflow, and the air in the activated carbon drum is then blown away by the airflow, and the air in the activated carbon drum is then blown away by the airflow, and the air in the activated carbon drum is then blown away by the airflow, and the airflow ... (2) During operation, the residence time of the waste gas adsorption is prolonged on the basis of a small volume. The dense distribution of the waste gas inlet pipe, steam inlet pipe and cooling inlet pipe makes the activated carbon more fully utilized, thereby improving the working efficiency of the waste gas treatment, maintaining the overall sealing and heat insulation, and reducing heat loss. At the same time, by finely utilizing the activated carbon, the speeds of adsorption, desorption and cooling tend to be the same, and the effects of the three are optimized at the same time; (3)During operation, the water source is externally connected through the water inlet pipe to form heat-conducting water, which flows towards the main shunt pipe. The flowing heat-conducting water absorbs the heat of the high-temperature air, thereby performing the first preheating, and using its large specific heat capacity to avoid excessive temperature rise. The heat-conducting water after the first preheating is input into the first shunt pipe and the second shunt pipe through the main shunt pipe, thereby delivering heat-conducting water to the second heat exchanger and the third heat exchanger. The mixed gas converges into the desorption exhaust pipe through the mixed gas exhaust pipe, and then is discharged into the third heat exchanger through the mixed gas guide pipe. The third heat exchanger absorbs heat from the mixed gas through the obtained heat-conducting water to cool the mixed gas. The steam in the mixed gas condenses into condensed water. At the same time, the heat-conducting water that has absorbed heat and increased in temperature is input into the main confluence pipe through the first confluence pipe, and the high-concentration exhaust gas after water removal is discharged into the catalytic oxidation furnace through the concentration guide pipe. The mixed gas of steam and high-concentration exhaust gas discharged from the desorption exhaust pipe is discharged into the catalytic oxidation furnace for catalytic oxidation reaction after water removal, and is input into the second heat exchanger through the tail gas guide pipe. The waste heat of the tail gas participates in the preheating of the heat-conducting water, and then the tail gas cooled to room temperature is discharged through the second exhaust pipe. Subsequently, the heat-conducting water that has completed preheating converges into the main confluence pipe through the second confluence pipe, thereby fully utilizing the waste heat in various parts of the heat exchange absorption process and concentrating it at the catalytic oxidation furnace, thereby reducing heat loss, reducing energy consumption, and improving energy utilization efficiency; (4)During operation, the mixed gas of steam and high-concentration exhaust gas discharged from the desorption exhaust pipe is discharged into the catalytic oxidation furnace for catalytic oxidation reaction after water removal, and forms flameless combustion. During the reaction, through the honeycomb catalyst on the stacked catalyst trays, the first gas guide pipe and the second gas guide pipe with staggered distribution, and the barrier of the first evaporation tray and the second evaporation tray, the exhaust gas is in full and lasting contact with the catalyst, thereby fully treating the exhaust gas and generating harmless tail gas. It can not only increase the contact time between the exhaust gas substances and the catalyst and improve the treatment efficiency, but also fully conduct heat and improve the energy transfer efficiency, and can also quickly conduct heat and improve the steam production efficiency. The water pressure of the heat-conducting water decreases sequentially from bottom to top, while the reaction amount of the exhaust gas decreases sequentially from bottom to top, so that the reaction heat conduction efficiency is mutually matched, forming the best working efficiency and working effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the side view of the planar structure of the adsorption and concentration furnace of the present invention; Figure 3 is the side view of the internal structure of the concentration furnace body of the present invention; Figure 4 is the side view of the internal structure of the catalytic oxidation furnace of the present invention; Figure 5 isFigure 4 Enlarged schematic view of area A In the figure: 101, working support; 102, adsorption concentrator; 201, concentrator body; 202, outer heat insulation cylinder; 203, activated carbon rotating cylinder; 204, inner heat insulation cylinder; 205, outer partition board; 206, outer diversion partition board; 207, outer turning partition board; 208, inner partition board; 209, inner diversion partition board; 210, inner turning partition board; 211, outer sealing ring; 212, sealing rotating ring; 213, inner sealing ring; 214, waste gas shunt pipe; 215, waste gas inlet pipe; 216, adsorption exhaust pipe; 217, confluence exhaust pipe; 218, steam shunt pipe; 219, steam inlet pipe; 220, desorption exhaust pipe; 221, mixed gas exhaust pipe; 222, air shunt pipe; 223, cooling inlet pipe; 224, cooling exhaust pipe; 225, heat conduction exhaust pipe; 226, support rod; 301, catalytic oxidation furnace; 302, first heat exchanger; 303, second heat exchanger; 304, third heat exchanger; 305, heat dissipation air duct; 306, first exhaust pipe; 307, steam air duct; 308, mixed gas air duct; 309, concentration air duct; 310, tail gas air duct; 311, second exhaust pipe; 312, water inlet pipe; 313, total shunt pipe; 314, first shunt pipe; 315, second shunt pipe; 316, first confluence pipe; 317, second confluence pipe; 318, total confluence pipe; 319, heat-resistant liquid pump; 320, total water supply pipe; 321, heat dissipation air pump; 322, waste gas tank; 323, third exhaust pipe; 324, condensate water hopper; 401, sealed furnace body; 402, support air inlet hopper; 403, support exhaust hopper; 404, first evaporation pan; 405, first air duct; 406, second evaporation pan; 407, second air duct; 408, catalyst pan; 409, outer support ring; 410, inner support ring; 411, shunt annular pipe; 412, shunt vertical pipe; 413, shunt conduit; 414, steam conduit; 415, steam port; 416, rectifying arc mask; 417, rectifying mesh holes. Detailed implementation manners

[0020] To further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following describes in detail the specific implementation manners, structures, features and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0021] Please refer to Figures 1-5As shown in the figure: A VOCS waste gas adsorption and catalytic combustion device, including a working bracket 101, an adsorption and concentration furnace 102 is installed on the working bracket 101. The adsorption and concentration furnace 102 includes a concentration furnace body 201. An outer heat insulation cylinder 202, an activated carbon rotating cylinder 203 and an inner heat insulation cylinder 204 are sequentially sleeved from outside to inside in a coaxial structure within the concentration furnace body 201. A number of outer partition plates 205 are installed on the inner circumference of the outer heat insulation cylinder 202, and a number of inner partition plates 208 are installed on the inner circumference of the inner heat insulation cylinder 204. The inner partition plates 208 correspond to the outer partition plates 205 one by one. An outer diversion partition plate 206 and an outer turning partition plate 207 are provided between adjacent outer partition plates 205, and an inner diversion partition plate 209 and an inner turning partition plate 210 are provided between adjacent inner partition plates 208. A catalytic oxidation furnace 301 is provided on one side of the working bracket 101. An exhaust gas shunt pipe 214, a desorption exhaust pipe 220, a steam shunt pipe 218, a cooling exhaust pipe 224, an air shunt pipe 222 and an adsorption exhaust pipe 216 are sequentially arranged and communicated on the outer circumference of the adsorption and concentration furnace 102; During the operation of this embodiment, a large amount of low-concentration waste gas is absorbed and stored by the waste gas tank 322. At the same time, the waste gas tank 322 conveys and transports the low-concentration waste gas. The waste gas tank 322 evenly inputs the waste gas into the outer heat insulation cylinder 202 through the waste gas shunt pipe 214, and evenly blows the waste gas to the area in front of the block on the activated carbon rotating cylinder 203 that is opposite to the waste gas inlet pipe 215 through the equidistant and uniform distribution of the waste gas inlet pipe 215. The block on the activated carbon rotating cylinder 203 that is opposite to the waste gas shunt pipe 214 first absorbs the harmful substances in the waste gas. After being filled with harmful substances, the activated carbon rotating cylinder 203 rotates under force, causing the block filled with harmful substances to move towards the steam shunt pipe 218. At this time, there is a continuous steam flow between the steam shunt pipe 218 and the desorption exhaust pipe 220. Steam is produced by the catalytic oxidation furnace 301, and the steam is injected into the steam shunt pipe 218 through the steam guide pipe 307. When injecting, the waste gas is evenly blown to the area in front of the block on the activated carbon rotating cylinder 203 that is opposite to the steam inlet pipe 219 through the equidistant and uniform distribution of the steam inlet pipe 219. The harmful substances are desorbed from the activated carbon by the steam, and the block on the activated carbon rotating cylinder 203 that is opposite to the steam inlet pipe 219 first desorbs the absorbed harmful substances, forming a mixture of high-concentration waste gas and desorption steam, and forming an air flow of the mixture. Along with the air flow, it flows towards the desorption exhaust pipe 220. The desorbed block moves towards the air shunt pipe 222 along with the rotation of the activated carbon rotating cylinder 203. The heat dissipation air pump 321 collects the surrounding air and conveys it to the air shunt pipe 222. The normal-temperature air is evenly blown to the area in front of the block on the activated carbon rotating cylinder 203 that is opposite to the cooling inlet pipe 223 through the equidistant and uniform distribution of the cooling inlet pipe 223. The normal-temperature air absorbs heat to maintain a low temperature, and the block on the activated carbon rotating cylinder 203 that is opposite to the cooling inlet pipe 223 first maintains a low temperature. Along with the air flow, it flows towards the cooling exhaust pipe 224. Subsequently, the air flow is continuously deflected by the outer diversion partition 206, the outer turning partition 207, the inner diversion partition 209, and the inner turning partition 210 to extend the residence time. Through the concentration and circulation of adsorption-desorption-cooling, it is possible to avoid leakage of the adsorbed substances during the process of transfer for desorption, improve the treatment capacity and treatment efficiency, improve the integration degree of the equipment, and also eliminate the transportation process of dispensing and transporting the adsorbed substances, thereby improving the work efficiency.

[0022] There are three outer partition baffles 205 in this embodiment, and the inner cavity of the outer heat insulation cylinder 202 is divided into three chambers by the plane where the outer partition baffles 205 are located. The central angle of each chamber is divided according to the actual working efficiency. The exhaust gas shunt pipes 214 and the adsorption exhaust pipes 216, the steam shunt pipes 218 and the desorption exhaust pipes 220, and the air shunt pipes 222 and the cooling exhaust pipes 224 are respectively grouped, and each group of pipes corresponds to one chamber one by one. The exhaust gas shunt pipes 214 are connected to the outer heat insulation cylinder 202 through the exhaust gas inlet pipes 215, the steam shunt pipes 218 are connected to the outer heat insulation cylinder 202 through the steam inlet pipes 219, the desorption exhaust pipes 220 are connected to the outer heat insulation cylinder 202 through the mixed gas exhaust pipes 221, the cooling exhaust pipes 224 are connected to the outer heat insulation cylinder 202 through the heat conduction exhaust pipes 225, the air shunt pipes 222 are connected to the outer heat insulation cylinder 202 through the cooling inlet pipes 223, and the adsorption exhaust pipes 216 are connected to the outer heat insulation cylinder 202 through the confluence exhaust pipes 217. The exhaust gas inlet pipes 215, the confluence exhaust pipes 217, the steam inlet pipes 219, the mixed gas exhaust pipes 221, the cooling inlet pipes 223, and the heat conduction exhaust pipes 225 are all evenly distributed at equal intervals; During the operation of this embodiment, on the basis of a small volume, the residence time of the exhaust gas being adsorbed is extended. Through the dense arrangement of the exhaust gas inlet pipes 215, the steam inlet pipes 219, and the cooling inlet pipes 223, the activated carbon is more fully utilized, thereby improving the working efficiency of exhaust gas treatment. At the same time, through the fine utilization of the activated carbon, the speeds of adsorption, desorption, and cooling tend to be the same, and the effects of the three reach the best at the same time.

[0023] Outer sealing rings 211 are fixedly connected to the inner circumferences at both ends of the outer heat insulation cylinder 202. Sealing rotating rings 212 are fixedly connected to the surfaces at both ends of the activated carbon rotating cylinder 203. Inner sealing rings 213 are fixedly connected to the outer circumferences at both ends of the inner heat insulation cylinder 204. The outer circumference of the sealing rotating ring 212 is in sealed rotational connection with the outer sealing ring 211, and the inner circumference is in sealed rotational connection with the inner sealing ring 213. The outer diversion baffles 206 and the outer turning baffles 207 between adjacent outer partition baffles 205 are evenly and staggeredly distributed. The outer diversion baffles 206 and the inner turning baffles 210, and the outer turning baffles 207 and the inner diversion baffles 209 respectively correspond to each other one by one. A support rod 226 is fixedly penetrated through the inner heat insulation cylinder 204, and the adsorption and concentration furnace 102 is fixed on the working bracket 101 through the support rod 226. A motor for driving the rotation of the activated carbon rotating cylinder 203 is installed on one side of the working bracket 101; During the operation of this embodiment, the overall sealing performance and heat insulation performance are maintained, and the heat loss is reduced.

[0024] On one side of the catalytic oxidation furnace 301, there are a first heat exchanger 302, a second heat exchanger 303, and a third heat exchanger 304. The steam outlet of the catalytic oxidation furnace 301 is connected to the steam shunt pipe 218 through a steam guide pipe 307. The desorption exhaust pipe 220 is connected to the gas mixing inlet of the third heat exchanger 304 through a gas mixing guide pipe 308. The waste gas outlet of the third heat exchanger 304 is connected to the waste gas inlet of the catalytic oxidation furnace 301 through a concentration guide pipe 309. The tail gas outlet of the catalytic oxidation furnace 301 is connected to the tail gas inlet of the second heat exchanger 303 through a tail gas guide pipe 310. The tail gas outlet of the second heat exchanger 303 is connected to a second exhaust pipe 311; On one side of the adsorption and concentration furnace 102, there are a heat dissipation air pump 321 and a waste gas tank 322. The waste gas tank 322 conveys low-concentration waste gas to the waste gas shunt pipe 214. The heat dissipation air pump 321 is connected to the air shunt pipe 222. The adsorption exhaust pipe 216 is connected to a third exhaust pipe 323. The cooling exhaust pipe 224 is connected to the air inlet of the first heat exchanger 302 through a heat dissipation guide pipe 305. The exhaust outlet of the first heat exchanger 302 is connected to a first exhaust pipe 306. The water inlet of the first heat exchanger 302 absorbs water through a water inlet pipe 312. The water outlet of the first heat exchanger 302 is connected to a total shunt pipe 313. The total shunt pipe 313 is connected to the water inlet of the third heat exchanger 304 through a first shunt pipe 314. The total shunt pipe 313 is connected to the water inlet of the second heat exchanger 303 through a second shunt pipe 315. The water inlet of the catalytic oxidation furnace 301 is successively connected to a total water supply pipe 320 and a heat-resistant liquid pump 319. The water inlet of the heat-resistant liquid pump 319 is connected to a total confluence pipe 318. The total confluence pipe 318 is connected to the water outlet of the third heat exchanger 304 through a first confluence pipe 316. The total confluence pipe 318 is connected to the water outlet of the second heat exchanger 303 through a second confluence pipe 317. The bottom of the third heat exchanger 304 is connected to a condensation water collecting hopper 324; During the operation of this embodiment, the water source is connected externally through the water inlet pipe 312 to form heat-conducting water, which flows towards the total shunt pipe 313. The flowing heat-conducting water absorbs the heat of the high-temperature air, thereby performing the first preheating, and using its large specific heat capacity to avoid excessive temperature rise. The heat-conducting water after the first preheating is input into the first shunt pipe 314 and the second shunt pipe 315 through the total shunt pipe 313, so as to convey the heat-conducting water to the second heat exchanger 303 and the third heat exchanger 304. The mixed gas converges into the desorption exhaust pipe 220 through the mixed gas exhaust pipe 221, and then is discharged into the third heat exchanger 304 through the mixed gas guide pipe 308. The third heat exchanger 304 absorbs heat from the mixed gas with the obtained heat-conducting water to cool the mixed gas, and the steam in the mixed gas condenses into condensed water. At the same time, the heat-conducting water that has absorbed heat and increased in temperature is input into the total confluence pipe 318 through the first confluence pipe 316, and the high-concentration exhaust gas after water removal is discharged into the catalytic oxidation furnace 301 through the concentration guide pipe 309. The mixed gas of steam and high-concentration exhaust gas discharged from the desorption exhaust pipe 220 is discharged into the catalytic oxidation furnace 301 for catalytic oxidation reaction after water removal, and is input into the second heat exchanger 303 through the tail gas guide pipe 310. The waste heat of the tail gas participates in the preheating of the heat-conducting water, and then the tail gas cooled to room temperature is discharged through the second exhaust pipe 311. Subsequently, the heat-conducting water that has completed preheating converges into the total confluence pipe 318 through the second confluence pipe 317, so as to fully utilize the waste heat from various parts in the heat exchange absorption process and concentrate it at the catalytic oxidation furnace 301, thereby reducing heat loss, reducing energy consumption, and improving energy utilization efficiency.

[0025] The catalytic oxidation furnace 301 includes a sealed furnace body 401. Inside the sealed furnace body 401, a support air inlet hopper 402, a first evaporation tray 404, a second evaporation tray 406, a catalyst tray 408, and a support exhaust hopper 403 are sequentially arranged from bottom to top. The first evaporation tray 404 and the second evaporation tray 406 are evenly staggered and have a hollow structure inside. The catalyst tray 408 is installed between adjacent first evaporation trays 404 and second evaporation trays 406. The first evaporation tray 404, the second evaporation tray 406, and the catalyst tray 408 are vertically coaxially and evenly arranged, and a steam conduit 414 passes through the centers. A plurality of steam ports 415 are opened on the side wall of the steam conduit 414. The steam conduit 414 is connected to the first evaporation tray 404 and the second evaporation tray 406 through the steam ports 415. A first gas conduit 405 passes through the first evaporation tray 404, and a second gas conduit 407 passes through the second evaporation tray 406. The first evaporation tray 404 is sealed with the first gas conduit 405, and the second evaporation tray 406 is sealed with the second gas conduit 407. A shunt annular pipe 411 is sleeved on the outer periphery of the support air inlet hopper 402. A plurality of shunt vertical pipes 412 are connected to the upper side of the shunt annular pipe 411. A plurality of shunt conduits 413 are connected to the shunt vertical pipes 412, and the shunt vertical pipes 412 are connected to the first evaporation tray 404 and the second evaporation tray 406 through the shunt conduits 413. The support air inlet hopper 402 is connected to the concentration gas conduit 309, the support exhaust hopper 403 is connected to the tail gas conduit 310, the steam conduit 414 is connected to the steam gas conduit 307, a rectifying arc mask 416 is sleeved on the pipe mouth of the concentration gas conduit 309 located inside the support air inlet hopper 402, and a plurality of evenly distributed rectifying mesh holes 417 are provided on the rectifying arc mask 416; During the operation of this embodiment, the mixture of steam and high-concentration waste gas discharged from the desorption exhaust pipe 220 is discharged into the catalytic oxidation furnace 301 for catalytic oxidation reaction after water removal and forms flameless combustion. During the reaction, through the honeycomb catalysts on the stacked catalyst trays 408, the staggered first gas conduit 405 and second gas conduit 407, and the blocking of the first evaporation tray 404 and the second evaporation tray 406, the waste gas can contact the catalyst fully and persistently, so as to fully treat the waste gas and generate harmless tail gas. It can not only increase the contact time between the waste gas substances and the catalyst and improve the treatment efficiency, but also conduct heat fully and improve the energy transfer efficiency, and can also conduct heat quickly and improve the steam production efficiency. The water pressure of the heat-conducting water decreases sequentially from bottom to top, while the reaction amount of the waste gas decreases sequentially from bottom to top, so that the efficiency of reaction heat conduction is mutually matched to form the best working efficiency and working effect.

[0026] An outer support ring 409 is sleeved on the outer periphery of the catalyst disc 408, and an inner support ring 410 is sleeved on the inner periphery of the catalyst disc 408. The catalyst disc 408 is sealed and supported by the outer support ring 409 and the inner support ring 410. The first air guide tube 405 and the second air guide tube 407 are uniformly staggered with each other, and the spacing between adjacent first air guide tubes 405 is at least greater than the diameter of the second air guide tube 407. When this embodiment is in operation, the contact time between the exhaust gas substances and the catalyst and the treatment efficiency are increased, thereby improving the adequacy of the exhaust gas treatment and avoiding pollution.

[0027] A working method of a VOCS exhaust gas adsorption catalytic combustion device comprises the following steps: Step 1: A large amount of low-concentration waste gas is absorbed and stored by the waste gas tank 322. At the same time, the waste gas tank 322 transmits and transports the low-concentration waste gas. The waste gas tank 322 evenly inputs the waste gas into the outer insulation cylinder 202 through the waste gas diversion pipe 214, and evenly blows the waste gas to the block on the activated carbon drum 203 facing the waste gas inlet pipe 215 through the equidistant distribution. The block on the activated carbon drum 203 facing the waste gas diversion pipe 214 first absorbs the harmful substances in the waste gas, and then passes through the outer guide baffle 206 and the outer The turning baffle 207, the inner guide baffle 209 and the inner turning baffle 210 continuously deflect the airflow, so that the airflow undergoes multiple deflections in the chamber, prolonging the residence time of the airflow in the chamber, so that the blocks of the activated carbon drum 203 fully absorb the exhaust gas, and all parts of the activated carbon drum 203 are fully used. The airflow in which the harmful substances and harmful gases are fully absorbed is gathered into the adsorption exhaust pipe 216 through the combined exhaust pipe 217, and then discharged into the third exhaust pipe 323 through the adsorption exhaust pipe 216, and finally discharged, thereby completing the adsorption of the exhaust gas; Step 2: After the block on the activated carbon rotating drum 203 that absorbs waste gas in Step 1 is filled with harmful substances, the activated carbon rotating drum 203 rotates under force, causing the block full of harmful substances to move towards the steam shunt pipe 218. At this time, there is already a continuous flow of steam in the steam shunt pipe 218 and the desorption exhaust pipe 220. Steam is produced by the catalytic oxidation furnace 301 and is injected into the steam shunt pipe 218 through the steam guide pipe 307. When injecting, the waste gas is evenly blown to the front of the block on the activated carbon rotating drum 203 facing the steam inlet pipe 219 through the equidistant and uniform distribution of the steam inlet pipe 219. The harmful substances are desorbed from the activated carbon by the steam, and the block on the activated carbon rotating drum 203 facing the steam inlet pipe 219 first desorbs the absorbed harmful substances, forming a mixture of high-concentration waste gas and desorption steam, and forming an airflow of the mixture. As the airflow flows towards the desorption exhaust pipe 220, the airflow is continuously deflected by the outer diversion partition 206, the outer turning partition 207, the inner diversion partition 209, and the inner turning partition 210. Utilizing the high temperature, vibration, and long residence time of the steam in the mixture, the desorption efficiency of the activated carbon rotating drum 203 is promoted, and the mixture passes through the mixture exhaust pipe 221 and converges into the desorption exhaust pipe 220, and then is discharged into the third heat exchanger 304 through the mixture guide pipe 308, thus completing the desorption work of the waste gas; Step 3: The third heat exchanger 304 receives the heat-conducting water in the first heat exchanger 302 through the first shunt pipe 314, and absorbs heat from the mixture with the obtained heat-conducting water to cool the mixture. The steam in the mixture condenses into condensed water. At the same time, the heat-conducting water heated up by absorbing heat is input into the total confluence pipe 318 through the first confluence pipe 316, and the high-concentration waste gas after water removal is discharged into the catalytic oxidation furnace 301 through the concentration guide pipe 309, thus completing the water removal work of the mixture and the preheating work of the steam water; Step 4: The mixture of steam and high-concentration waste gas discharged from the desorption exhaust pipe 220 is discharged into the catalytic oxidation furnace 301 for catalytic oxidation reaction after water removal, and flameless combustion is formed. During the reaction, through the honeycomb catalysts on the stacked catalyst trays 408, the first gas guide pipes 405 and the second gas guide pipes 407 with staggered distribution, and the barriers of the first evaporation tray 404 and the second evaporation tray 406, the waste gas is in full and lasting contact with the catalyst, so as to fully treat the waste gas and generate harmless tail gas. The components of the tail gas are carbon dioxide and water, and a large amount of heat is generated. The heat is absorbed by the staggered first evaporation tray 404 and the second evaporation tray 406. At the same time, the heat-conducting water is transported to the main water supply pipe 320 through the heat-resistant liquid pump 319, and is transported to the first evaporation tray 404 and the second evaporation tray 406 along the paths of the shunt annular pipe 411, each shunt vertical pipe 412 and each shunt conduit 413. The heat-conducting water finally forms steam after absorbing heat. The steam converges in the steam conduit 414 through the steam port 415, and then is input into the steam shunt pipe 218 through the steam guide pipe 307, thus completing the catalytic combustion of the high-concentration waste gas and the preparation of steam; Step 5: The block desorbed by steam purge in Step 2 moves towards the air shunt pipe 222 as the activated carbon drum 203 rotates. The surrounding air is collected by the heat dissipation air pump 321 and transported to the air shunt pipe 222. The normal-temperature air is evenly blown to the front of the block on the activated carbon drum 203 facing the cooling air inlet pipe 223 through the equidistant and uniform distribution of the cooling air inlet pipe 223. The heat is absorbed by the normal-temperature air to keep it at a low temperature, and the block on the activated carbon drum 203 facing the cooling air inlet pipe 223 first remains at a low temperature. As the air flow moves towards the cooling exhaust pipe 224, the air flow is continuously deflected by the outer diversion partition 206, the outer turning partition 207, the inner diversion partition 209 and the inner turning partition 210, so as to extend the residence time of the air that has absorbed heat, promote the cooling efficiency of the activated carbon drum 203, and enable the air that has fully absorbed heat to converge into the cooling exhaust pipe 224 through the heat-conducting exhaust pipe 225, and then is discharged into the first heat exchanger 302 through the connected heat dissipation guide pipe 305, thus completing the section cooling work of the activated carbon drum 203; Step 6: Connect an external water source through the water inlet pipe 312 to form heat-conducting water that flows towards the main shunt pipe 313. The flowing heat-conducting water absorbs the heat of the high-temperature air, thereby performing the first preheating, and uses its large specific heat capacity to avoid too rapid temperature rise. Subsequently, the cooled air is discharged through the first exhaust pipe 306 and is introduced into the heat dissipation air pump 321 again to reduce heat loss and the leakage of harmful substances. The heat-conducting water after the first preheating is input into the first shunt pipe 314 and the second shunt pipe 315 through the main shunt pipe 313, thereby delivering the heat-conducting water to the second heat exchanger 303 and the third heat exchanger 304. The tail gas in Step 4 is input into the second heat exchanger 303 through the tail gas duct 310, and the waste heat of the tail gas participates in the preheating of the heat-conducting water. Subsequently, the tail gas cooled to room temperature is discharged through the second exhaust pipe 311. Subsequently, the heat-conducting water that has completed preheating converges into the main convergence pipe 318 through the first convergence pipe 316 and the second convergence pipe 317, and is delivered to the main water supply pipe 320 through the heat-resistant liquid pump 319. Cooperating with the work of Steps 1 to 5, a complete waste gas treatment and waste heat utilization are formed.

[0028] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the technical content disclosed above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A VOCS waste gas adsorption catalytic combustion device, characterized in that, It includes a working bracket (101), on which an adsorption concentrator furnace (102) is installed. The adsorption concentrator furnace (102) includes a concentrator furnace body (201). Inside the concentrator furnace body (201), an outer heat insulation cylinder (202), an activated carbon rotary cylinder (203), and an inner heat insulation cylinder (204) are sequentially sleeved from outside to inside in a coaxial structure. A number of outer partition plates (205) are installed on the inner circumference of the outer heat insulation cylinder (202), and a number of inner partition plates (208) are installed on the inner circumference of the inner heat insulation cylinder (204). The inner partition plates (208) correspond to the outer partition plates (205) one by one. An outer diversion partition plate (206) and an outer turning partition plate (207) are provided between adjacent outer partition plates (205), and an inner diversion partition plate (209) and an inner turning partition plate (210) are provided between adjacent inner partition plates (208). A catalytic oxidation furnace (301) is provided on one side of the working bracket (101). An exhaust gas shunt pipe (214), a desorption exhaust pipe (220), a steam shunt pipe (218), a cooling exhaust pipe (224), an air shunt pipe (222), and an adsorption exhaust pipe (216) are sequentially arranged and connected to the outer circumference of the adsorption concentrator furnace (102).

2. The VOCs waste gas adsorption catalytic combustion device according to claim 1, characterized in that, There are three outer partition plates (205), and the inner cavity of the outer heat insulation cylinder (202) is divided into three chambers by the plane where the outer partition plates (205) are located. The exhaust gas shunt pipe (214) and the adsorption exhaust pipe (216), the steam shunt pipe (218) and the desorption exhaust pipe (220), and the air shunt pipe (222) and the cooling exhaust pipe (224) are respectively grouped, and each group of pipes corresponds to one chamber one by one. The exhaust gas shunt pipe (214) is connected to the outer heat insulation cylinder (202) through an exhaust gas inlet pipe (215), the steam shunt pipe (218) is connected to the outer heat insulation cylinder (202) through a steam inlet pipe (219), the desorption exhaust pipe (220) is connected to the outer heat insulation cylinder (202) through a mixed gas exhaust pipe (221), the cooling exhaust pipe (224) is connected to the outer heat insulation cylinder (202) through a heat conduction exhaust pipe (225), the air shunt pipe (222) is connected to the outer heat insulation cylinder (202) through a cooling inlet pipe (223), and the adsorption exhaust pipe (216) is connected to the outer heat insulation cylinder (202) through a confluence exhaust pipe (217). The exhaust gas inlet pipe (215), the confluence exhaust pipe (217), the steam inlet pipe (219), the mixed gas exhaust pipe (221), the cooling inlet pipe (223), and the heat conduction exhaust pipe (225) are all evenly distributed at equal intervals respectively.

3. A VOCS waste gas adsorption catalytic combustion device according to claim 1, characterized in that Both ends of the outer heat insulation cylinder (202) are fixedly connected with outer sealing rings (211) on the inner circumference. Sealing rotating rings (212) are fixedly connected to the surfaces of both ends of the activated carbon rotating cylinder (203). Inner sealing rings (213) are fixedly connected to the outer circumferences of both ends of the inner heat insulation cylinder (204). The outer circumference of the sealing rotating ring (212) is in sealed rotational connection with the outer sealing ring (211), and the inner circumference is in sealed rotational connection with the inner sealing ring (213). The outer diversion partition plates (206) and the outer turning partition plates (207) between adjacent outer partition partition plates (205) are evenly and staggeredly distributed. The outer diversion partition plates (206) and the inner turning partition plates (210), and the outer turning partition plates (207) and the inner diversion partition plates (209) respectively correspond to each other one by one. A support rod (226) is fixedly inserted into the inner heat insulation cylinder (204), and the adsorption and concentration furnace (102) is fixed on the working support (101) through the support rod (226). A motor for driving the rotation of the activated carbon rotating cylinder (203) is installed on one side of the working support (101).

4. A VOCS waste gas adsorption catalytic combustion device according to claim 1, characterized in that, A first heat exchanger (302), a second heat exchanger (303), and a third heat exchanger (304) are provided on one side of the catalytic oxidation furnace (301). The steam outlet of the catalytic oxidation furnace (301) is communicated with the steam shunt pipe (218) through a steam guide pipe (307). The desorption exhaust pipe (220) is communicated with the gas mixing inlet of the third heat exchanger (304) through a gas mixing guide pipe (308). The exhaust gas outlet of the third heat exchanger (304) is communicated with the exhaust gas inlet of the catalytic oxidation furnace (301) through a concentration guide pipe (309). The tail gas outlet of the catalytic oxidation furnace (301) is communicated with the tail gas inlet of the second heat exchanger (303) through a tail gas guide pipe (310). The tail gas outlet of the second heat exchanger (303) is communicated with a second exhaust pipe (311).

5. A VOCS waste gas adsorption catalytic combustion device according to claim 4, characterized in that, On one side of the adsorption and concentration furnace (102), there are a heat dissipation air pump (321) and an exhaust gas tank (322). The exhaust gas tank (322) conveys low-concentration exhaust gas to the exhaust gas shunt pipe (214). The heat dissipation air pump (321) is communicated with the air shunt pipe (222). The adsorption exhaust pipe (216) is communicated with a third exhaust pipe (323). The cooling exhaust pipe (224) is communicated with the air inlet of the first heat exchanger (302) through a heat dissipation air guide pipe (305). The air outlet of the first heat exchanger (302) is communicated with a first exhaust pipe (306). The water inlet of the first heat exchanger (302) absorbs water through a water inlet pipe (312). The water outlet of the first heat exchanger (302) is communicated with a total shunt pipe (313). The total shunt pipe (313) is communicated with the water inlet of the third heat exchanger (304) through a first shunt pipe (314). The total shunt pipe (313) is communicated with the water inlet of the second heat exchanger (303) through a second shunt pipe (315). The water inlet of the catalytic oxidation furnace (301) is successively communicated with a total water supply pipe (320) and a heat-resistant liquid pump (319). The water inlet of the heat-resistant liquid pump (319) is communicated with a total confluence pipe (318). The total confluence pipe (318) is communicated with the water outlet of the third heat exchanger (304) through a first confluence pipe (316). The total confluence pipe (318) is communicated with the water outlet of the second heat exchanger (303) through a second confluence pipe (317).

6. The VOCs waste gas adsorption catalytic combustion device according to claim 5, wherein A condensation water collecting hopper (324) is communicated with the bottom of the third heat exchanger (304).

7. An adsorption catalytic combustion device for VOCs waste gas according to claim 5, characterized in that, The catalytic oxidation furnace (301) includes a sealed furnace body (401). Inside the sealed furnace body (401), a support air inlet hopper (402), a first evaporation tray (404), a second evaporation tray (406), a catalyst tray (408), and a support exhaust hopper (403) are sequentially arranged from bottom to top. The first evaporation tray (404) and the second evaporation tray (406) are evenly staggered and have a hollow structure inside. The catalyst tray (408) is installed between adjacent first evaporation trays (404) and second evaporation trays (406). The first evaporation tray (404), the second evaporation tray (406), and the catalyst tray (408) are vertically coaxially and evenly arranged, and a steam conduit (414) passes through the centers of them. A plurality of steam ports (415) are formed in the side wall of the steam conduit (414). The steam conduit (414) is communicated with the first evaporation tray (404) and the second evaporation tray (406) through the steam ports (415). A first air duct (405) passes through the first evaporation tray (404), and a second air duct (407) passes through the second evaporation tray (406). The first evaporation tray (404) is sealed with the first air duct (405), and the second evaporation tray (406) is sealed with the second air duct (407). A shunt annular pipe (411) is sleeved on the outer periphery of the support air inlet hopper (402). A plurality of shunt vertical pipes (412) are communicated with the upper side of the shunt annular pipe (411). A plurality of shunt ducts (413) are communicated with the shunt vertical pipes (412), and the shunt vertical pipes (412) are communicated with the first evaporation tray (404) and the second evaporation tray (406) through the shunt ducts (413). The support air inlet hopper (402) is communicated with the concentration air duct (309), the support exhaust hopper (403) is communicated with the tail gas duct (310), and the steam conduit (414) is communicated with the steam duct (307).

8. An adsorption catalytic combustion device for VOCs waste gas according to claim 7, characterized in that, A rectifying arc mask (416) is sleeved on the pipe mouth of the concentration air duct (309) located inside the support air inlet hopper (402). A plurality of evenly distributed rectifying mesh holes (417) are provided on the rectifying arc mask (416).

9. A VOCS waste gas adsorption catalytic combustion device according to claim 7, characterized in that, An outer support ring (409) is sleeved on the outer periphery of the catalyst tray (408), and an inner support ring (410) is sleeved on the inner periphery of the catalyst tray (408). The catalyst tray (408) is kept sealed and supported through the outer support ring (409) and the inner support ring (410). The first air duct (405) and the second air duct (407) are evenly staggered with each other, and the distance between adjacent first air ducts (405) is at least the diameter of the second air duct (407).

10. A working method of a VOCS waste gas adsorption catalytic combustion device, which is applied to a VOCS waste gas adsorption catalytic combustion device according to any one of claims 5-9, characterized in that, Including the following steps: Step 1: The exhaust gas tank (322) uniformly inputs the exhaust gas into the outer heat insulation cylinder (202) through the exhaust gas shunt pipe (214), and evenly blows it onto the activated carbon rotating drum (203) through the exhaust gas shunt pipe (214). The area on the activated carbon rotating drum (203) facing the exhaust gas shunt pipe (214) first absorbs the harmful substances in the exhaust gas, and then continuously deflects the air flow through the outer diversion partition (206), outer turning partition (207), inner diversion partition (209) and inner turning partition (210), so that the air flow flows towards the adsorption exhaust pipe (216), and then is discharged through the adsorption exhaust pipe (216); Step 2: After the area on the activated carbon rotating drum (203) that absorbs the exhaust gas in Step 1 is filled with harmful substances, the activated carbon rotating drum (203) rotates under force, so that the area full of harmful substances moves towards the steam shunt pipe (218). The catalytic oxidation furnace (301) produces steam and injects it into the steam shunt pipe (218). The steam is evenly blown onto the area of the activated carbon rotating drum (203) full of harmful substances through the steam shunt pipe (218). The harmful substances are desorbed from the activated carbon by the steam and flow towards the desorption exhaust pipe (220) with the air flow, and then are discharged through the desorption exhaust pipe (220); Step 3: The mixture of steam and high-concentration exhaust gas discharged from the desorption exhaust pipe (220) is dewatered and then discharged into the catalytic oxidation furnace (301) for catalytic flameless combustion to generate harmless tail gas and a large amount of heat, and the heat is used to produce steam; Step 4: The area that has been purged and desorbed by the steam in Step 2 moves towards the air shunt pipe (222) as the activated carbon rotating drum (203) rotates. The air shunt pipe (222) blows air at most at room temperature onto the area that has absorbed a small amount of steam heat to cool the heated area, and makes the heat move with the air flow to the cooling exhaust pipe (224) and is discharged through the cooling exhaust pipe (224), so as to cool the activated carbon rotating drum (203). The activated carbon that has been cooled and restored continues to rotate towards the exhaust gas shunt pipe (214) as it rotates, so as to continuously concentrate the exhaust gas and maintain high efficiency and high throughput.

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