A reaction system and method for VOCs adsorption-catalytic combustion integration

Abstract

The present invention discloses a reaction system and method for VOCs adsorption-catalytic combustion integration. The system includes a catalytic combustion chamber, an adsorption chamber, a heating layer, a flow equalizing device, a air distribution plate, an adsorbent, a catalyst, a catalyst particle trapping device, a regenerative heat exchanger, a gas-water separation device, a CO2 storage tank, an H2O storage tank, a concentration detector, a valve controller, and different intake valves. Appropriate adsorbents and catalysts are selected and replaced according to the types of VOCs, and at the same time, the opening and closing of different valves are controlled according to the concentration of VOCs to select different VOCs treatment methods, realizing the processes of VOCs adsorption, desorption, and catalytic combustion, ensuring the continuity of the VOCs treatment process, and reducing the leakage of VOCs during the treatment process. By controlling the intake flow rate of O2 / air, fluidized bed catalytic combustion of VOCs is realized, greatly improving the VOCs removal efficiency. At the same time, three different catalyst particle recovery devices are provided, and the heat generated during the catalytic combustion process is recovered and utilized. The CO2 and H2O generated during the catalytic combustion process are separated and stored, saving energy, reducing costs, and reducing environmental pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of VOCs waste gas treatment, and in particular to a reaction system and method for VOCs adsorption-catalytic combustion integration. Background Art

[0002] It is well known that VOCs emitted into the atmosphere are the main pollutants of photochemical smog and PM 2.5 VOCs are important precursors of pollutants, damaging the atmosphere, severely polluting the environment, and endangering human health and the growth of plants and animals. They are a class of gases that pose serious risks to both humans and the environment. VOCs originate from both natural and anthropogenic sources, with anthropogenic emissions playing a dominant role. In recent years, my country's VOC-related policies, standards, and laws and regulations have been continuously developed and refined, with stricter VOC emission standards. Consequently, VOC management has garnered increasing attention.

[0003] VOCs control technologies primarily include preventive and purification methods. Currently, VOCs control technologies are more focused on purification methods. Purification methods include recovery and destruction technologies, with adsorption in recovery and catalytic combustion in destruction being the most widely used.

[0004] Currently, most research focuses on single treatment methods, such as adsorption and catalytic combustion, and focuses on the selection and preparation of adsorbent and catalyst materials. Research on reaction systems and methods is relatively limited. Fluidized bed catalytic combustion offers higher VOC removal efficiency than fixed bed reactions in VOC catalytic combustion, but research on this method is limited.

[0005] Combined treatment technologies composed of different single treatment technologies have attracted widespread attention due to their high VOCs removal efficiency, especially the adsorption-catalytic combustion combined treatment technology. However, the reaction systems and methods of this combined treatment technology currently have problems such as discontinuous treatment process and easy leakage of VOCs during the treatment process.

[0006] The types and concentrations of VOCs gases emitted in actual industrial production are unstable. It is very necessary to develop reaction systems and methods that can select appropriate treatment methods based on the actual types and concentrations of VOCs gases. Summary of the Invention

[0007] The purpose of the present invention is to propose a reaction system and method for integrated VOCs adsorption-catalytic combustion. The system and method can select an appropriate treatment method according to the type and concentration of VOCs, ensure the efficiency and continuity of the VOCs treatment process, reduce VOCs leakage, and at the same time set up a series of devices to recover and utilize catalyst particles and combustion products, thereby achieving the triple goals of saving energy, protecting the environment and reducing costs.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A reaction system for VOCs adsorption-catalytic combustion integration, comprising a catalytic combustion chamber 1, a left adsorption chamber 2-1, a right adsorption chamber 2-2, a heating layer 3, a flow equalizing device 4, an air distribution plate 5, an adsorbent 6, a catalyst 7, a primary catalyst particle capture device 8, a secondary catalyst particle capture device 9, a vibrating device 10, a tertiary catalyst particle capture device 11, a regenerative heat exchanger 12, a gas-water separation device 13, a CO2 storage tank 14, and a H2O storage tank 15. The heating layer 3 is located around the outside of the catalytic combustion chamber 1, and the left adsorption chamber 2-1 and the right adsorption chamber 2-2 are respectively located on the left side outside the heating layer 3. and the right side, the flow equalizing device 4 is located near the air inlet of the catalytic combustion chamber 1, the adsorbent 6 is located in the adsorption chamber 2, the catalyst 7 is located on the air distribution plate 5 in the catalytic combustion chamber 1, the first-level catalyst particle trapping device 8 is located at the upper part of the catalytic combustion chamber 1, the second-level catalyst particle trapping device 9 and the rapping device 10 are located around the top inner side of the catalytic combustion chamber 1, the third-level catalyst particle trapping device 11 is connected to the exhaust port of the catalytic combustion chamber 1, the regenerative heat exchanger 12 is located between the third-level catalyst particle trapping device 11 and the gas-water separation device 13, and the gas-water separation device 13 is respectively connected to the CO2 storage tank 14 and the H2O storage tank 15;

[0010] The VOCs adsorption-catalytic combustion integrated reaction system further includes a concentration detector 16, a valve controller 17, a left low-concentration VOCs intake valve 18 and a right low-concentration VOCs intake valve 19, a high-concentration VOCs intake valve 20, an O2 / air intake valve 21, a left desorption VOCs intake valve 22 and a right desorption VOCs intake valve 23, a left N2 intake valve 24 and a right N2 intake valve 25. The concentration detector 16 and the valve controller 17 are connected to the VOCs inlet, the upper air inlet or exhaust port and the lower air inlet or exhaust port of the left adsorption chamber 2-1, and the upper air inlet or exhaust port and the lower air inlet or exhaust port of the right adsorption chamber 2-2. The left low-concentration VOCs intake valve 18 and the right low-concentration VOCs intake valve 19, a high-concentration VOCs intake valve 20, an O2 / air intake valve 21, a left desorption VOCs intake valve 22 and a right desorption VOCs intake valve 23, a left N2 intake valve 24 and a right N2 intake valve 25. The concentration detector 16 and the valve controller 17 are connected to the VOCs inlet, the upper air inlet or exhaust port and the lower air inlet or exhaust port of the left adsorption chamber 2-1, and the upper air inlet or exhaust port and the lower air inlet or exhaust port of the right adsorption chamber 2-2. The Cs intake valve 18 and the right low-concentration VOCs intake valve 19 are respectively connected to the intake or exhaust ports at the lower part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2, the high-concentration VOCs intake valve 20 and the O2 / air intake valve 21 are connected to the intake port at the lower part of the catalytic combustion chamber 1, the left desorption VOCs intake valve 22 and the right desorption VOCs intake valve 23 are respectively located between the intake or exhaust ports at the lower part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2 and the intake port at the lower part of the catalytic combustion chamber 1, the left N2 intake valve 24 and the right N2 intake valve 25 are respectively located between the regenerative heat exchanger 12 and the intake or exhaust ports at the upper part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2.

[0011] According to the type of VOCs at the air inlet, suitable adsorbent 6 and catalyst 7 are selected and replaced to improve the efficiency of adsorption and catalytic combustion.

[0012] The concentration of VOCs at the air inlet is detected by a concentration detector 16 and the adsorption, desorption and catalytic combustion processes of VOCs are selected and controlled by a valve controller 17, thereby achieving continuity and integration of VOCs adsorption, desorption and catalytic combustion.

[0013] The adsorbents 6 in the left adsorption chamber 2 - 1 and the right adsorption chamber 2 - 2 are arranged in a spiral manner, which on the one hand prolongs the adsorption penetration time of VOCs and improves the adsorption efficiency, and on the other hand reduces the volume of the adsorption chamber.

[0014] By controlling the O2 / air intake flow rate, the catalyst 7 is kept in a suspended state and located at a certain height in the catalytic combustion chamber 1, thereby achieving fluidized bed catalytic combustion of VOCs, increasing the contact area between VOCs and the catalyst, and greatly improving the catalytic combustion efficiency.

[0015] By setting up three levels of different catalyst particle capture devices to recover fine catalyst particles, the loss of catalyst particles is reduced and the cost is lowered.

[0016] Part of the heat generated by the catalytic combustion of VOCs in the catalytic combustion chamber 1 is used to heat N2 through the regenerative heat exchanger 12 to achieve desorption of VOCs in the left adsorption chamber 2-1 and the right adsorption chamber 2-2, and part of the heat is used for the catalytic combustion of VOCs in the catalytic combustion chamber 1 to achieve self-stabilized combustion of VOCs and heat recovery.

[0017] By setting up a gas-water separation device 13, the CO2 and H2O generated during the catalytic combustion process are separated and stored in a CO2 storage tank 14 and an H2O storage tank 15 respectively, which can be used in other industrial and agricultural production.

[0018] The working method of the VOCs adsorption-catalytic combustion integrated reaction system is as follows: the adsorbent 6 and the catalyst 7 are selected and replaced according to the type of VOCs; different VOCs treatment methods are selected according to the different VOCs concentrations; the concentration of VOCs at the inlet is detected by the concentration detector 16; the opening and closing of different valves are controlled by the valve controller 17 to carry out the adsorption, desorption and catalytic combustion processes of VOCs;

[0019] When the inlet VOCs concentration is high, the high-concentration VOCs intake valve 20 and the O2 / air intake valve 21 are opened, and the other valves are closed. At the same time, the heating layer 3 starts working, and the fluidized bed catalytic combustion of VOCs is carried out by controlling the O2 / air intake flow rate;

[0020] When the inlet VOCs concentration is low, the left low-concentration VOCs intake valve 18 is opened and other valves are closed, and VOCs adsorption is carried out in the left adsorption chamber 2-1. When the concentration detector 16 on the upper part of the left adsorption chamber 2-1 detects that the adsorption is saturated, the left low-concentration VOCs intake valve 18 is closed through the valve controller 17, and the left N2 intake valve 24, the left desorption VOCs intake valve 22 and the O2 / air intake valve 21 are opened. The heating layer 3 starts to work, desorbs the VOCs in the left adsorption chamber 2-1 and carries out catalytic combustion in the catalytic combustion chamber 1. At the same time, the right low-concentration VOCs intake valve 19 is opened to adsorb the VOCs in the right adsorption chamber 2-2.

[0021] When the concentration detector 16 at the bottom of the left adsorption chamber 2-1 detects that desorption is complete, the valve controller 17 closes the left N2 intake valve 24. After catalytic combustion is complete, the left desorbed VOCs intake valve 22 and the O2 / air intake valve 21 are closed, and the left low-concentration VOCs intake valve 18 is opened again to adsorb VOCs in the left adsorption chamber 2-1.

[0022] When the concentration detector 16 on the upper portion of the right adsorption chamber 2-2 detects adsorption saturation, the valve controller 17 closes the right low-concentration VOCs intake valve 19, opens the right N2 intake valve 25, the right desorbed VOCs intake valve 23, and the O2 / air intake valve 21, and the heating layer 3 starts working to desorb the VOCs in the right adsorption chamber 2-2 and perform catalytic combustion in the catalytic combustion chamber 1;

[0023] When the concentration detector 16 at the bottom of the right adsorption chamber 2-2 detects that desorption is complete, the right N2 intake valve 25 is closed through the valve controller 17. After catalytic combustion is completed, the right desorbed VOCs intake valve 23 and the O2 / air intake valve 21 are closed, and the right low-concentration VOCs intake valve 19 is opened again to adsorb VOCs in the right adsorption chamber 2-2.

[0024] Repeat the above VOCs adsorption and desorption process in the left adsorption chamber 2-1 and the right adsorption chamber 2-2 to ensure the continuity of the VOCs adsorption, desorption and catalytic combustion process;

[0025] The fine catalyst particles in the VOCs fluidized bed catalytic combustion process are recovered by the first-stage catalyst particle capture device 8, the second-stage catalyst particle capture device 9, the vibration device 10 and the third-stage catalyst particle capture device 11;

[0026] Part of the heat generated by the catalytic combustion is used to heat N2 through the regenerative heat exchanger 12 to achieve desorption of VOCs in the left adsorption chamber 2-1 and the right adsorption chamber 2-2, and part of it is used for catalytic combustion of VOCs in the catalytic combustion chamber 1 to achieve self-stable combustion of VOCs.

[0027] The CO2 and H2O produced by the catalytic combustion are stored in the CO2 storage tank 14 and the H2O storage tank 15 respectively after passing through the gas-water separation device 13.

[0028] Compared with the prior art, the present invention selects different VOCs treatment methods by selecting and replacing appropriate adsorbents and catalysts according to the type of VOCs, and controlling the opening and closing of different valves according to the different VOCs concentrations. Low-concentration VOCs at the inlet first complete the adsorption and desorption process on a fixed bed, and then the high-concentration VOCs generated by desorption are catalytically combusted in a fluidized bed. High-concentration VOCs at the inlet are directly catalytically combusted in the fluidized bed. Multiple adsorption chambers are provided to alternately perform the adsorption and desorption processes, ensuring the continuity of the VOCs treatment process and reducing VOCs leakage during the treatment process. The fluidized bed catalytic combustion of VOCs is achieved by controlling the intake flow rate of O2 / air, greatly improving the VOCs removal efficiency. The catalyst particles are recycled by providing three different catalyst particle capture devices, and a heat storage heat exchanger is provided to recycle the heat generated during the catalytic combustion process. At the same time, the CO2 and H2O in the catalytic combustion products are separated and stored, saving energy, reducing costs, and reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of a reaction system for integrated VOCs adsorption-catalytic combustion according to the present invention.

[0030] 1-catalytic combustion chamber, 2-1-left adsorption chamber, 2-2-right adsorption chamber, 3-heating layer, 4-flow equalizing device, 5-air distribution plate, 6-adsorbent, 7-catalyst, 8-first-stage catalyst particle trapping device, 9-second-stage catalyst particle trapping device, 10-vibrating device, 11-third-stage catalyst particle trapping device, 12-regenerative heat exchanger, 13-gas-water separation device, 14-CO2 storage tank, 15-H2O storage tank, 16-concentration detector, 17-valve controller, 18-left low-concentration VOCs intake valve, 19-right low-concentration VOCs intake valve, 20-high-concentration VOCs intake valve, 21-O2 / air intake valve, 22-left desorption VOCs intake valve, 23-right desorption VOCs intake valve, 24-left N2 intake valve, 25-right N2 intake valve. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings:

[0032] The present invention selects and replaces appropriate adsorbents and catalysts based on the type of VOCs. It also controls the opening and closing of different valves according to the VOC concentration, thereby selecting different VOC treatment methods. This allows for the adsorption, desorption, and catalytic combustion of VOCs, ensuring the continuity of the VOC treatment process and reducing VOC leakage during the treatment process. By controlling the O2 / air intake flow rate, VOCs are catalytically combusted in a fluidized bed, significantly improving VOC removal efficiency. Three different catalyst particle capture devices are provided to recycle catalyst particles, and a regenerative heat exchanger is provided to recycle the heat generated during the catalytic combustion process. The CO2 and H2O in the catalytic combustion products are separated and stored, making the system applicable to other industrial and agricultural production applications.

[0033] Specifically, the present invention provides a reaction system for VOCs adsorption-catalytic combustion integration, such as Figure 1 As shown, it includes a catalytic combustion chamber 1, a left adsorption chamber 2-1, a right adsorption chamber 2-2, a heating layer 3, a flow equalizing device 4, an air distribution plate 5, an adsorbent 6, a catalyst 7, a first-stage catalyst particle trapping device 8, a second-stage catalyst particle trapping device 9 and a vibration device 10, a third-stage catalyst particle trapping device 11, a heat storage heat exchanger 12, a gas-water separation device 13, a CO2 storage tank 14 and a H2O storage tank 15. The heating layer 3 is located around the outside of the catalytic combustion chamber 1, the left adsorption chamber 2-1 and the right adsorption chamber 2-2 are respectively located on the left and right sides outside the heating layer 3, and the flow equalizing device 4 is located Near the air inlet of the catalytic combustion chamber 1, the adsorbent 6 is located in the adsorption chamber 2, the catalyst 7 is located on the air distribution plate 5 in the catalytic combustion chamber 1, the first-stage catalyst particle capture device 8 is located at the upper part of the catalytic combustion chamber 1, the second-stage catalyst particle capture device 9 and the rapping device 10 are located around the top inner side of the catalytic combustion chamber 1, the third-stage catalyst particle capture device 11 is connected to the exhaust port of the catalytic combustion chamber 1, the regenerative heat exchanger 12 is located between the third-stage catalyst particle capture device 11 and the gas-water separation device 13, and the gas-water separation device 13 is respectively connected to the CO2 storage tank 14 and the H2O storage tank 15;

[0034] The VOCs adsorption-catalytic combustion integrated reaction system further includes a concentration detector 16, a valve controller 17, a left low-concentration VOCs intake valve 18 and a right low-concentration VOCs intake valve 19, a high-concentration VOCs intake valve 20, an O2 / air intake valve 21, a left desorption VOCs intake valve 22 and a right desorption VOCs intake valve 23, a left N2 intake valve 24 and a right N2 intake valve 25. The concentration detector 16 and the valve controller 17 are connected to the VOCs inlet, the upper air inlet or exhaust port and the lower air inlet or exhaust port of the left adsorption chamber 2-1, and the upper air inlet or exhaust port and the lower air inlet or exhaust port of the right adsorption chamber 2-2. The left low-concentration VOCs intake valve 18 and the right low-concentration VOCs intake valve 19, a high-concentration VOCs intake valve 20, an O2 / air intake valve 21, a left desorption VOCs intake valve 22 and a right desorption VOCs intake valve 23, a left N2 intake valve 24 and a right N2 intake valve 25. The concentration detector 16 and the valve controller 17 are connected to the VOCs inlet, the upper air inlet or exhaust port and the lower air inlet or exhaust port of the left adsorption chamber 2-1, and the upper air inlet or exhaust port and the lower air inlet or exhaust port of the right adsorption chamber 2-2. The Cs intake valve 18 and the right low-concentration VOCs intake valve 19 are respectively connected to the intake or exhaust ports at the lower part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2, the high-concentration VOCs intake valve 20 and the O2 / air intake valve 21 are connected to the intake port at the lower part of the catalytic combustion chamber 1, the left desorption VOCs intake valve 22 and the right desorption VOCs intake valve 23 are respectively located between the intake or exhaust ports at the lower part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2 and the intake port at the lower part of the catalytic combustion chamber 1, the left N2 intake valve 24 and the right N2 intake valve 25 are respectively located between the regenerative heat exchanger 12 and the intake or exhaust ports at the upper part of the left adsorption chamber 2-1 and the right adsorption chamber 2-2.

[0035] By selecting and replacing appropriate adsorbents and catalysts based on the type of VOCs and controlling the opening and closing of different valves according to the different VOC concentrations, different VOC treatment methods are selected to achieve the adsorption, desorption, and catalytic combustion processes of VOCs, ensuring the continuity of the VOC treatment process. By controlling the intake flow rate of O2 / air, VOCs are catalytically burned in a fluidized bed. Three different catalyst particle recovery devices are also installed. The heat generated during the catalytic combustion process is recycled and the CO2 and H2O produced during the catalytic combustion process are separated and stored.

[0036] The working method of the reaction system for VOCs adsorption-catalytic combustion integration of the present invention is as follows:

[0037] Adsorbent 6 and catalyst 7 are selected and replaced according to the type of VOCs, and different VOCs treatment methods are selected according to the different VOCs concentrations. The concentration of VOCs at the inlet is detected by the concentration detector 16, and the opening and closing of different valves are controlled by the valve controller 17 to carry out the adsorption, desorption and catalytic combustion process of VOCs.

[0038] When the inlet VOCs concentration is high, the high-concentration VOCs intake valve 20 and the O2 / air intake valve 21 are opened, and the other valves are closed. At the same time, the heating layer 3 starts working, and the fluidized bed catalytic combustion of VOCs is carried out by controlling the O2 / air intake flow rate.

[0039] When the inlet VOCs concentration is low, the left low-concentration VOCs intake valve 18 is opened and other valves are closed, and VOCs adsorption is carried out in the left adsorption chamber 2-1. When the concentration detector 16 on the upper part of the left adsorption chamber 2-1 detects that the adsorption is saturated, the left low-concentration VOCs intake valve 18 is closed through the valve controller 17, and the left N2 intake valve 24, the left desorption VOCs intake valve 22 and the O2 / air intake valve 21 are opened. The heating layer 3 starts to work, and the VOCs in the left adsorption chamber 2-1 are desorbed and catalytic combustion is carried out in the catalytic combustion chamber 1. At the same time, the right low-concentration VOCs intake valve 19 is opened to adsorb VOCs in the right adsorption chamber 2-2.

[0040] When the concentration detector 16 at the bottom of the left adsorption chamber 2-1 detects that desorption is completed, the left N2 intake valve 24 is closed through the valve controller 17. After catalytic combustion is completed, the left desorbed VOCs intake valve 22 and the O2 / air intake valve 21 are closed, and the left low-concentration VOCs intake valve 18 is opened again to adsorb VOCs in the left adsorption chamber 2-1.

[0041] When the concentration detector 16 on the upper portion of the right adsorption chamber 2-2 detects adsorption saturation, the valve controller 17 closes the right low-concentration VOCs intake valve 19, opens the right N2 intake valve 25, the right desorbed VOCs intake valve 23, and the O2 / air intake valve 21, and the heating layer 3 starts working to desorb the VOCs in the right adsorption chamber 2-2 and perform catalytic combustion in the catalytic combustion chamber 1;

[0042] When the concentration detector 16 at the bottom of the right adsorption chamber 2-2 detects that desorption is completed, the right N2 intake valve 25 is closed through the valve controller 17. After catalytic combustion is completed, the right desorbed VOCs intake valve 23 and the O2 / air intake valve 21 are closed, and the right low-concentration VOCs intake valve 19 is opened again to adsorb VOCs in the right adsorption chamber 2-2.

[0043] Repeat the above VOCs adsorption and desorption process in the left adsorption chamber 2-1 and the right adsorption chamber 2-2 to ensure the continuity of the VOCs adsorption, desorption and catalytic combustion process.

[0044] The adsorbent 6 in the adsorption chamber 2 is arranged in a spiral manner, which on the one hand prolongs the adsorption penetration time of VOCs and improves the adsorption efficiency, and on the other hand reduces the volume of the adsorption chamber.

[0045] By controlling the O2 / air intake flow rate, the catalyst 7 is kept in a suspended state and located at a certain height in the catalytic combustion chamber 1, thereby achieving fluidized bed catalytic combustion of VOCs, increasing the contact area between VOCs and the catalyst, and greatly improving the catalytic combustion efficiency.

[0046] The fine catalyst particles in the VOCs fluidized bed catalytic combustion process are recovered through the first-stage catalyst particle capture device 8, the second-stage catalyst particle capture device 9, the vibration device 10 and the third-stage catalyst particle capture device 11, thereby reducing the loss of catalyst particles and lowering costs.

[0047] Part of the heat generated by catalytic combustion is used to heat N2 through the regenerative heat exchanger 12 to achieve desorption of VOCs in the left adsorption chamber 2-1 and the right adsorption chamber 2-2, and part of it is used for catalytic combustion of VOCs in the catalytic combustion chamber 1 to achieve self-stabilized combustion of VOCs.

[0048] The CO2 and H2O produced by the catalytic combustion are stored in the CO2 storage tank 14 and the H2O storage tank 15 respectively after passing through the gas-water separation device 13, and can be used in other industrial and agricultural production.

Claims

1. A reaction system for VOCs adsorption-catalytic combustion integration, characterized in that: The invention comprises a catalytic combustion chamber (1), a left adsorption chamber (2-1), a right adsorption chamber (2-2), a heating layer (3), a flow equalizing device (4), an air distribution plate (5), an adsorbent (6), a catalyst (7), a primary catalyst particle trapping device (8), a secondary catalyst particle trapping device (9), a vibration device (10), a tertiary catalyst particle trapping device (11), a heat storage heat exchanger (12), a gas-water separation device (13), a CO2 storage tank (14) and a H2O storage tank (15), wherein the heating layer (3) is located around the outer side of the catalytic combustion chamber (1), the left adsorption chamber (2-1) and the right adsorption chamber (2-2) are located on the left and right sides outside the heating layer (3) respectively, and the flow equalizing device (4) Located near the air inlet of the catalytic combustion chamber (1), the adsorbent (6) is located in the adsorption chamber (2), the catalyst (7) is located on the air distribution plate (5) in the catalytic combustion chamber (1), the first-level catalyst particle capture device (8) is located at the upper part of the catalytic combustion chamber (1), the second-level catalyst particle capture device (9) and the vibration device (10) are located around the inner side of the top of the catalytic combustion chamber (1), the third-level catalyst particle capture device (11) is connected to the exhaust port of the catalytic combustion chamber (1), the heat storage heat exchanger (12) is located between the third-level catalyst particle capture device (11) and the gas-water separation device (13), and the gas-water separation device (13) is respectively connected to the CO2 storage tank (14) and the H2O storage tank (15); The reaction system for VOCs adsorption-catalytic combustion integration also includes a concentration detector (16), a valve controller (17), a left low-concentration VOCs air intake valve (18), a right low-concentration VOCs air intake valve (19), a high-concentration VOCs air intake valve (20), an O2 / air air intake valve (21), a left desorption VOCs air intake valve (22), a right desorption VOCs air intake valve (23), a left N2 air intake valve (24) and a right N2 air intake valve (25). The concentration detector (16) and the valve controller (17) are connected to the VOCs air intake port, the upper air intake or exhaust port and the lower air intake or exhaust port of the left adsorption chamber (2-1) and the upper air intake or exhaust port and the lower air intake or exhaust port of the right adsorption chamber (2-2). The air intake valve (18) and the right low-concentration VOCs air intake valve (19) are respectively connected to the lower air intake or exhaust port of the left adsorption chamber (2-1) and the right adsorption chamber (2-2); the high-concentration VOCs air intake valve (20) and the O2 / air air intake valve (21) are connected to the lower air intake port of the catalytic combustion chamber (1); the left desorption VOCs air intake valve (22) and the right desorption VOCs air intake valve (23) are respectively located between the lower air intake or exhaust port of the left adsorption chamber (2-1) and the right adsorption chamber (2-2) and the lower air intake port of the catalytic combustion chamber (1); the left N2 air intake valve (24) and the right N2 air intake valve (25) are respectively located between the regenerative heat exchanger (12) and the upper air intake or exhaust port of the left adsorption chamber (2-1) and the right adsorption chamber (2-2).

2. A reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: According to the type of VOCs at the air inlet, suitable adsorbents (6) and catalysts (7) are selected and replaced.

3. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: The concentration of VOCs at the air inlet is detected by a concentration detector (16), and the adsorption, desorption and catalytic combustion processes of VOCs are selected and controlled by a valve controller (17).

4. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: The adsorbent (6) in the left adsorption chamber (2-1) and the right adsorption chamber (2-2) is arranged in a spiral manner.

5. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: By controlling the O2 / air intake flow rate, the catalyst (7) is placed in a suspended state and located at a certain height in the catalytic combustion chamber (1), thereby achieving fluidized bed catalytic combustion of VOCs.

6. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: Three different levels of catalyst particle capture devices are set up to recover fine catalyst particles during the catalytic combustion process.

7. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: A portion of the heat generated by the catalytic combustion of VOCs in the catalytic combustion chamber (1) is used to heat N2 through a regenerative heat exchanger (12) to achieve desorption of VOCs in the left adsorption chamber (2-1) and the right adsorption chamber (2-2); and a portion of the heat is used for the catalytic combustion of VOCs in the catalytic combustion chamber (1) to achieve self-stabilized combustion of VOCs.

8. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: A gas-water separation device (13), a CO2 storage tank (14) and an H2O storage tank (15) are provided to separate and store CO2 and H2O generated during the catalytic combustion process.

9. The reaction system for VOCs adsorption-catalytic combustion integration according to claim 1, characterized in that: The continuity and integration of VOCs adsorption, desorption and catalytic combustion processes are achieved.

10. A working method for a VOCs adsorption-catalytic combustion integrated reaction system according to any one of claims 1 to 9, characterized in that: Adsorbents (6) and catalysts (7) are selected and replaced according to the types of VOCs, and different VOCs treatment methods are selected according to different VOCs concentrations. The concentration of VOCs at the inlet is detected by a concentration detector (16), and the opening and closing of different valves are controlled by a valve controller (17) to carry out the adsorption, desorption and catalytic combustion process of VOCs; When the inlet VOCs concentration is high, the high-concentration VOCs intake valve (20) and the O2 / air intake valve (21) are opened, and the other valves are closed. At the same time, the heating layer (3) starts to work, and the fluidized bed catalytic combustion of VOCs is carried out by controlling the O2 / air intake flow rate; When the inlet VOCs concentration is low, the left low-concentration VOCs intake valve (18) is opened, and other valves are closed, and VOCs adsorption is carried out in the left adsorption chamber (2-1). When the concentration detector (16) on the upper part of the left adsorption chamber (2-1) detects that the adsorption is saturated, the left low-concentration VOCs intake valve (18) is closed through the valve controller (17), and the left N2 intake valve (24), the left desorption VOCs intake valve (22) and the O2 / air intake valve (21) are opened, and the heating layer (3) starts to work, and the VOCs in the left adsorption chamber (2-1) are desorbed and catalytic combustion is carried out in the catalytic combustion chamber (1). At the same time, the right low-concentration VOCs intake valve (19) is opened to adsorb VOCs in the right adsorption chamber (2-2); When the concentration detector (16) at the bottom of the left adsorption chamber (2-1) detects that desorption is completed, the left N2 intake valve (24) is closed through the valve controller (17). After the catalytic combustion is completed, the left desorbed VOCs intake valve (22) and the O2 / air intake valve (21) are closed, and at the same time, the left low-concentration VOCs intake valve (18) is opened again to adsorb VOCs in the left adsorption chamber (2-1); When the concentration detector (16) on the upper part of the right adsorption chamber (2-2) detects adsorption saturation, the right low-concentration VOCs intake valve (19) is closed through the valve controller (17), the right N2 intake valve (25), the right desorption VOCs intake valve (23) and the O2 / air intake valve (21) are opened, and the heating layer (3) starts to work, desorbs the VOCs in the right adsorption chamber (2-2) and performs catalytic combustion in the catalytic combustion chamber (1); When the concentration detector (16) at the bottom of the right adsorption chamber (2-2) detects that desorption is completed, the right N2 intake valve (25) is closed through the valve controller (17). After the catalytic combustion is completed, the right desorbed VOCs intake valve (23) and the O2 / air intake valve (21) are closed, and at the same time, the right low-concentration VOCs intake valve (19) is opened again to adsorb VOCs in the right adsorption chamber (2-2); Repeat the above VOCs adsorption and desorption process in the left adsorption chamber (2-1) and the right adsorption chamber (2-2) to ensure the continuity of the VOCs adsorption, desorption and catalytic combustion process; Fine catalyst particles in the VOCs fluidized bed catalytic combustion process are recovered through a primary catalyst particle capture device (8), a secondary catalyst particle capture device (9), a vibration device (10) and a tertiary catalyst particle capture device (11); A portion of the heat generated by the catalytic combustion is used to heat N2 through a regenerative heat exchanger (12) to achieve desorption of VOCs in the left adsorption chamber (2-1) and the right adsorption chamber (2-2), and a portion of the heat is used for catalytic combustion of VOCs in the catalytic combustion chamber (1) to achieve self-stable combustion of VOCs. The CO2 and H2O generated by the catalytic combustion are respectively stored in a CO2 storage tank (14) and an H2O storage tank (15) after passing through a gas-water separation device (13).

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