Oxidation device for efficiently treating VOCs waste gas

Abstract

The invention relates to the technical field of waste gas treatment, and particularly discloses an oxidation device for efficiently treating VOCs waste gas, the oxidation device comprises an oxidation assembly, a heat exchange assembly and a filter assembly, and the heat exchange assembly and the filter assembly are located on one side of the oxidation assembly; the oxidation assembly comprises an oxidation furnace, a first pipeline, a second pipeline, a transition pipe, a first sample introduction pipe and a second sample introduction pipe, the first sample introduction pipe and the second sample introduction pipe are communicated with the transition pipe, the transition pipe is communicated with the first pipeline and the second pipeline, a plurality of butterfly valves are arranged on the transition pipe, and filter assemblies are arranged on the first sample introduction pipe and the second sample introduction pipe. The environment heat density and the heat conductivity coefficient in the device can be improved, the time required for heating VOCs waste gas to the reaction temperature is shortened, the energy consumption is reduced, the oxidation treatment efficiency is improved, and the treatment cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to an oxidation device for efficiently treating VOCs waste gas. Background Art

[0002] The industrial waste gas treatment scheme mainly adopts gas-fired regenerative thermal oxidation furnace for treatment. Its working principle is that VOCs waste gas enters the gas ventilation chamber of the lower layer of the gas-fired regenerative thermal oxidation furnace, and passes through the ceramic regenerative thermal chamber A through the gas switching valve to enter the combustion chamber. In this process, VOCs waste gas exchanges heat with the regenerative ceramic, the gas is heated up and preheated, and the regenerative ceramic cools down and releases heat. VOCs waste gas moves from end A to end B, and at the same time, VOCs waste gas continues to heat up to the reaction temperature in the combustion chamber to start oxidation reaction. After the reaction, the gas enters the regenerative thermal chamber B to exchange heat with the regenerative ceramic, the regenerative ceramic heats up and stores heat, and the gas cools down and releases heat and then is discharged from the gas-fired regenerative thermal oxidation furnace through the gas switching valve. At this time, the first stage of the equipment is completed. In the second stage, the gas switching valve is used to make the VOCs waste gas pass through the gas-fired regenerative thermal oxidation furnace from the opposite direction, the regenerative ceramic in the regenerative thermal chamber B releases heat, and the regenerative ceramic in the regenerative thermal chamber A stores heat, and the second stage of the equipment is completed. The first and second stages constitute a complete working cycle of the equipment.

[0003] The existing technology still has the following areas for improvement: Due to the low thermal density and thermal conductivity of the high-temperature gaseous environment, VOCs waste gas needs a long heating time to reach the reaction temperature during oxidation treatment in the combustion chamber, the oxidation treatment efficiency is low, and a large amount of energy is consumed, resulting in high treatment costs. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides an oxidation device for efficiently treating VOCs waste gas, which can improve the environmental thermal density and thermal conductivity in the device, shorten the time required to heat the VOCs waste gas to the reaction temperature, reduce energy consumption, improve oxidation treatment efficiency, and reduce treatment costs.

[0005] The purpose of the present invention can be achieved by the following technical solutions: An oxidation device for efficiently treating VOCs waste gas comprises an oxidation component, a heat exchange component and a filter component, wherein the heat exchange component and the filter component are located on one side of the oxidation component; The oxidation assembly comprises an oxidation furnace, a first pipeline, a second pipeline, a transition pipe, a first injection pipe and a second injection pipe, the first injection pipe and the second injection pipe are connected to the transition pipe, the transition pipe is connected to the first pipeline and the second pipeline, a plurality of butterfly valves are arranged on the transition pipe, and the first injection pipe and the second injection pipe are both provided with the filter assembly; The heat exchange assembly comprises a heat exchange box, in which a heat storage tank, a first heat exchange tube and a second heat exchange tube are arranged, the inlet and outlet of the first heat exchange tube are both connected to the first pipeline, and the inlet and outlet of the second heat exchange tube are both connected to the second pipeline; The filter assembly includes a filter screen, a mounting plate, a transition plate and a pressure sensor, as well as multiple groups of limit blocks, bolts, mounting blocks and buffer assemblies. The filter screen is fixedly connected to the middle of the mounting plate, the pressure sensor is arranged on the mounting plate, and the mounting block is fixedly connected to the transition plate.

[0006] Preferably, the mounting plate is arranged between the limit block and the buffer assembly, the limit block has a straight through hole and a limit groove in the middle, the mounting block is provided with a protruding section, the mounting block has a straight through hole in the middle, a through hole is provided at the end of the mounting plate, and the protruding section of the mounting block passes through the through hole of the mounting plate.

[0007] Preferably, the buffer assembly includes a connecting plate and multiple groups of sleeves, struts and springs, the sleeve is fixedly connected to the mounting block, the strut is fixedly connected between the sleeve and the connecting plate, the spring is sleeved on the strut, the portion where the strut and the sleeve are connected is provided with a damping layer, the connecting plate is arranged in a circular ring shape, and the connecting plate is sleeved on the protruding section of the mounting block.

[0008] Preferably, the bolt passes through the through hole of the mounting block and the through hole of the limiting block, the mounting block, the buffer assembly, the mounting plate and the limiting block are connected by the bolt, a protruding block is provided at one end of the bolt, and the protruding block of the bolt matches the limiting groove on the limiting block.

[0009] Preferably, the oxidation furnace is provided with a first sampling layer, a first heat storage layer, an oxidation layer, a second heat storage layer, a second sampling layer and two groups of thermal insulation layers, the first pipeline is connected to the first sampling layer, the second pipeline is connected to the second sampling layer, the first heat storage layer, the oxidation layer and the second heat storage layer are all composed of granular heat storage ceramic bodies, and multiple groups of heating wires are arranged in the oxidation layer, and the multiple groups of heating wires are evenly distributed.

[0010] Preferably, a mesh plate is provided below the second heat storage layer, a base is fixedly connected below the mesh plate, and two groups of the thermal insulation layers are provided on both sides of the first heat storage layer, the oxidation layer and the second heat storage layer.

[0011] Preferably, the first heat exchange tube is located outside the heat storage tank, and a portion of the first heat exchange tube is embedded in the heat storage tank.

[0012] Preferably, the second heat exchange tube is located inside the heat storage tank, and a portion of the second heat exchange tube is embedded in the heat storage tank.

[0013] Preferably, solenoid valves are provided on both the inlet and outlet pipelines of the first heat exchange tube, and solenoid valves are provided on both the inlet and outlet pipelines of the second heat exchange tube.

[0014] Preferably, a heat storage medium is provided in the heat storage tank.

[0015] The beneficial effects of the present invention are: (1) By setting up the oxidation component, the technical effect that can be achieved is that the first heat storage layer, the oxidation layer and the second heat storage layer are all composed of granular heat storage ceramic bodies, and the oxidation reaction environment of VOCs waste gas is changed from the traditional high-temperature gas environment to a high-temperature solid environment. The thermal density of the high-temperature gas environment is 305kJ / m³, and the thermal conductivity is 0.076W / m·k. The VOCs waste gas absorbs heat from the surrounding high-temperature environment to reach the reaction temperature for reaction. The thermal density of the high-temperature solid environment is 841,500kJ / m³, the thermal conductivity is 2W / m·k, and the specific surface area is 639m 2 / m³, compared with the former, the thermal density of the high-temperature solid environment is 2759 times that of the former, and the thermal conductivity is 26.3 times that of the former. Under the same reaction temperature, the time for VOCs waste gas to obtain energy in the high-temperature solid environment to reach the reaction temperature will be greatly shortened, thereby improving the oxidation treatment efficiency, and at the same time reducing energy consumption and reducing the overall treatment cost.

[0016] (2) By setting up an oxidation component, a technical effect can also be achieved that multiple groups of heating wires are arranged in the oxidation layer, and the multiple groups of heating wires are evenly distributed to avoid a large temperature difference in the oxidation layer, which affects the oxidation and decomposition treatment effect of VOCs waste gas. The mesh plate plays a role in ventilation and support. Two groups of insulation layers are arranged on both sides of the first heat storage layer, the oxidation layer and the second heat storage layer to avoid heat energy loss. At the same time, they also separate the wall of the oxidation furnace from the first heat storage layer, the oxidation layer and the second heat storage layer to avoid damage to the wall due to high temperature.

[0017] (3) By setting up the heat exchange component, the technical effect that can be achieved is that part of the first heat exchange tube is embedded in the heat storage tank, and part of the second heat exchange tube is embedded in the heat storage tank, so as to facilitate better heat exchange. The heat exchange component can heat up and cool down the VOCs waste gas and the high-temperature exhaust gas. On the one hand, the heat energy of the high-temperature exhaust gas is reused, so that the time required for the VOCs waste gas to heat up to the preset temperature after entering the oxidation furnace is further reduced, thereby improving the processing efficiency and reducing energy consumption. On the other hand, it prevents the high-temperature exhaust gas from being too high in temperature when discharged into the environment, thereby causing pollution to the environment.

[0018] (4) By setting the filter assembly, the technical effect that can be achieved is that the first sampling tube and the second sampling tube are both provided with a filter assembly, which can filter out particulate matter in the VOCs exhaust gas, and prevent the particulate matter from entering the pipeline to cause blockage or entering the oxidation furnace to affect the oxidation decomposition process. The pressure sensor is arranged on the mounting plate, which is convenient for real-time monitoring of the state of the filter. According to the air permeability and air permeability of the filter, it is evaluated whether the filter needs to be replaced to ensure the filtering effect. By arranging the mounting plate and the filter between the limit block and the buffer assembly, the particulate matter in the VOCs exhaust gas can be intercepted when the VOCs exhaust gas is introduced, and the VOCs exhaust gas can be buffered, thereby reducing the impact force on subsequent components and extending the overall service life of the device. The limit block, the mounting plate, the buffer assembly and the mounting block are matched and limited by bolts, so that the filter is easy to disassemble and assemble, and is easy to replace and maintain, thereby ensuring the filtering effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 A perspective view of the present invention; Figure 2 It is a right side view of the present invention; Figure 3 It is a front view of the present invention; Figure 4 A top view of the present invention; Figure 5 is a first cross-sectional view of the present invention; Figure 6 is a second cross-sectional view of the present invention; Figure 7 It is a first structural diagram of a part of the heat exchange assembly in the present invention; Figure 8 It is a second structural diagram of a part of the heat exchange assembly in the present invention; Fig. 9 It is a front view of the filter assembly in the present invention; Fig.10 It is a left side view of the filter assembly in the present invention; Fig.11 is a three-dimensional diagram of the filter assembly of the present invention; Description of main component symbols: In the figure: 1, oxidation furnace; 101, first sample inlet layer; 102, first heat storage layer; 103, oxidation layer; 104, second heat storage layer; 105, base; 106, second sample inlet layer; 107, heating wire; 108, insulation layer; 109, mesh plate; 2, first pipeline; 3, second pipeline; 4, transition pipe; 5, first sample inlet pipe; 6, second sample inlet pipe; 7, butterfly valve; 8, heat exchange box; 801, heat storage tank; 802, first heat exchange tube; 803, second heat exchange tube; 9, filter assembly; 901, filter screen; 902, limit block; 903, bolt; 904, limit groove; 905, mounting plate; 906, transition plate; 907, mounting block; 908, sleeve; 909, support rod; 910, spring; 911, connecting plate; 912, pressure sensor; 10, solenoid valve. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0023] An oxidation device for efficiently treating VOCs waste gas comprises an oxidation component, a heat exchange component and a filter component 9, wherein the heat exchange component and the filter component 9 are located on one side of the oxidation component; The oxidation assembly includes an oxidation furnace 1, a first pipeline 2, a second pipeline 3, a transition pipe 4, a first sampling pipe 5 and a second sampling pipe 6. The first sampling pipe 5 and the second sampling pipe 6 are connected to the transition pipe 4, and the transition pipe 4 is connected to the first pipeline 2 and the second pipeline 3. A plurality of butterfly valves 7 are arranged on the transition pipe 4. The first sampling pipe 5 and the second sampling pipe 6 are both provided with a filter assembly 9, which can filter out particulate matter in the VOCs waste gas to prevent the particulate matter from entering the pipeline to cause blockage or entering the oxidation furnace 1 to affect the oxidation decomposition process; The heat exchange assembly includes a heat exchange box 8, in which a heat storage tank 801, a first heat exchange tube 802 and a second heat exchange tube 803 are arranged. The inlet and outlet of the first heat exchange tube 802 are both connected to the first pipeline 2, and the inlet and outlet of the second heat exchange tube 803 are both connected to the second pipeline 3; The filter assembly 9 includes a filter screen 901, a mounting plate 905, a transition plate 906 and a pressure sensor 912 as well as multiple groups of limit blocks 902, bolts 903, mounting blocks 907 and buffer assemblies. The filter screen 901 is fixedly connected to the middle of the mounting plate 905. The pressure sensor 912 is arranged on the mounting plate 905 to facilitate real-time monitoring of the status of the filter screen 901. Whether the filter screen 901 needs to be replaced is evaluated based on the air permeability and air permeability of the filter screen 901 to ensure the filtering effect. The mounting block 907 is fixedly connected to the transition plate 906.

[0024] The mounting plate 905 is arranged between the limit block 902 and the buffer assembly. The limit block 902 has a straight through hole and a limit groove 904 in the middle. The mounting block 907 is provided with a protruding section. The mounting block 907 has a straight through hole in the middle. A through hole is provided at the end of the mounting plate 905. The protruding section of the mounting block 907 passes through the through hole of the mounting plate 905.

[0025] The buffer assembly includes a connecting plate 911 and multiple groups of sleeves 908, struts 909 and springs 910. The sleeve 908 is fixedly connected to the mounting block 907. The strut 909 is fixedly connected between the sleeve 908 and the connecting plate 911. The spring 910 is sleeved on the strut 909. The part where the strut 909 and the sleeve 908 are connected is provided with a damping layer. The connecting plate 911 is arranged in a circular ring shape and is sleeved on the protruding section of the mounting block 907.

[0026] The bolt 903 passes through the through hole of the mounting block 907 and the through hole of the limit block 902. The mounting block 907, the buffer assembly, the mounting plate 905 and the limit block 902 are connected by the bolt 903. A protruding block is provided at one end of the bolt 903, and the protruding block of the bolt 903 matches the limit groove 904 on the limit block 902.

[0027] By arranging the mounting plate 905 and the filter 901 between the limit block 902 and the buffer assembly, it is possible to intercept particulate matter in the VOCs exhaust gas when the VOCs exhaust gas is introduced, and to buffer the VOCs exhaust gas, thereby reducing the impact force on subsequent components and extending the overall service life of the device. The limit block 902, the mounting plate 905, the buffer assembly and the mounting block 907 are matched and limited by bolts 903, so that the filter 901 is easy to disassemble and assemble, replace and maintain, thereby ensuring the filtering effect of the filter 901.

[0028] The oxidation furnace 1 is provided with a first sample feeding layer 101, a first heat storage layer 102, an oxidation layer 103, a second heat storage layer 104, a second sample feeding layer 106 and two groups of heat preservation layers 108. The first pipeline 2 is connected to the first sample feeding layer 101, and the second pipeline 3 is connected to the second sample feeding layer 106. The first heat storage layer 102, the oxidation layer 103 and the second heat storage layer 104 are all composed of granular heat storage ceramic bodies. A plurality of groups of electric heating wires 107 are arranged in the oxidation layer 103, and the plurality of electric heating wires 107 are evenly distributed to avoid the oxidation layer A large temperature difference is generated in 103, which affects the oxidation and decomposition treatment effect of VOCs waste gas. The oxidation reaction environment of VOCs waste gas is changed from the traditional high-temperature gas environment to a high-temperature solid environment. The thermal density of the high-temperature gas environment is 305kJ / m³, and the thermal conductivity is 0.076W / m·k. VOCs waste gas absorbs heat from the surrounding high-temperature environment to reach the reaction temperature for reaction. The thermal density of the high-temperature solid environment is 841,500kJ / m³, the thermal conductivity is 2W / m·k, and the specific surface area is 639m 2 / m³, compared with the former, the thermal density of the high-temperature solid environment is 2759 times that of the former, and the thermal conductivity is 26.3 times that of the former. Under the same reaction temperature, the time for VOCs waste gas to obtain energy in the high-temperature solid environment to reach the reaction temperature will be greatly shortened, thereby improving the oxidation treatment efficiency, and at the same time reducing energy consumption and reducing the overall treatment cost.

[0029] A mesh plate 109 is arranged below the second heat storage layer 104, and a base 105 is fixedly connected below the mesh plate 109. The mesh plate 109 plays a role of ventilation and support. Two groups of thermal insulation layers 108 are arranged on both sides of the first heat storage layer 102, the oxidation layer 103 and the second heat storage layer 104 to prevent heat energy loss. At the same time, they also separate the wall of the oxidation furnace 1 from the first heat storage layer 102, the oxidation layer 103 and the second heat storage layer 104 to prevent high temperature from damaging the wall.

[0030] The first heat exchange tube 802 is located outside the heat storage tank 801, and a part of the first heat exchange tube 802 is embedded in the heat storage tank 801; the second heat exchange tube 803 is located inside the heat storage tank 801, and a part of the second heat exchange tube 803 is embedded in the heat storage tank 801, so as to facilitate better heat exchange; the inlet and outlet pipelines of the first heat exchange tube 802 are both provided with solenoid valves 10, and the inlet and outlet pipelines of the second heat exchange tube 803 are both provided with solenoid valves 10; and heat storage medium is provided in the heat storage tank 801.

[0031] By setting up a heat exchange component, VOCs waste gas and high-temperature exhaust gas can be heated and cooled by heat exchange. On the one hand, the thermal energy of the high-temperature exhaust gas can be reused, so that the time required for the VOCs waste gas to be heated to the preset temperature after entering the oxidation furnace 1 is further reduced, thereby improving the processing efficiency and reducing energy consumption. On the other hand, the high-temperature exhaust gas is prevented from being too hot when discharged into the environment, causing pollution to the environment.

[0032] The working principle and use process of the present invention are as follows: the first stage: the butterfly valve 7 is controlled to be opened, and the VOCs waste gas is introduced from the first sampling tube 5 through the filter 901, and the particulate matter in the VOCs waste gas is filtered and intercepted by the filter 901, and the solenoid valve 10 on the inlet pipeline and outlet pipeline of the first heat exchange tube 802 is controlled to be opened, and the VOCs waste gas is introduced into the heat exchange box 8 through the transition tube 4, the first pipeline 2 and the inlet pipeline of the first heat exchange tube 802, and the VOCs waste gas is preheated by heat exchange with the heat storage medium in the heat storage tank 801 and is introduced back into the first pipeline 2 through the outlet pipeline of the first heat exchange tube 802, and is introduced into the first sampling layer 101 of the oxidation furnace 1 through the first pipeline 2, and the VOCs waste gas is introduced downward from the first sampling layer 101 to the first The heat storage layer 102 is preheated again by heat exchange, and is heated to a preset temperature in the oxidation layer 103 for high-temperature oxidation decomposition treatment. The generated exhaust gas is passed into the second heat storage layer 104 for heat exchange and cooling. The exhaust gas after heat exchange and cooling enters the second sampling layer 106 through the mesh plate 109, and the solenoid valve 10 on the inlet and outlet pipelines of the second heat exchange pipe 803 is controlled to be opened. The exhaust gas is passed from the second sampling layer 106 through the second pipeline 3 and the inlet pipeline of the second heat exchange pipe 803 into the heat exchange box 8. The exhaust gas exchanges heat with the heat storage medium in the heat storage tank 801 and is cooled again, and is passed back to the second pipeline 3 through the outlet pipeline of the second heat exchange pipe 803. The butterfly valve 7 is controlled to be opened, and the exhaust gas is discharged from the second sampling pipe 6 through the second pipeline 3 and the transition pipe 4.

[0033] The second stage: the butterfly valve 7 is controlled to be opened, and the VOCs waste gas is introduced from the second sampling pipe 6 through the filter 901. The particulate matter in the VOCs waste gas is filtered and intercepted by the filter 901. The solenoid valve 10 on the inlet and outlet pipelines of the second heat exchange pipe 803 is controlled to be opened. The VOCs waste gas is introduced into the heat exchange box 8 through the transition pipe 4, the second pipeline 3 and the inlet pipeline of the second heat exchange pipe 803. The VOCs waste gas is preheated by heat exchange with the heat storage medium in the heat storage tank 801 and is introduced back into the second pipeline 3 through the outlet pipeline of the second heat exchange pipe 803. It is introduced into the second sampling layer 106 of the oxidation furnace 1 through the second pipeline 3. The VOCs waste gas passes from the second sampling layer 106 through the mesh plate 109 and is introduced upward to the second heat storage layer 104 to be introduced again. Heat exchange preheating is performed, and the oxidation layer 103 is heated to a preset temperature for high-temperature oxidation decomposition treatment. The generated exhaust gas is passed into the first heat storage layer 102 for heat exchange and cooling. The exhaust gas after heat exchange and cooling enters the first sampling layer 101, and the solenoid valve 10 on the inlet pipeline and outlet pipeline of the first heat exchange tube 802 is controlled to be opened. The exhaust gas passes from the first sampling layer 101 through the first pipeline 2 and the inlet pipeline of the first heat exchange tube 802 into the heat exchange box 8, and the exhaust gas exchanges heat with the heat storage medium in the heat storage tank 801 to cool down again and passes back to the first pipeline 2 through the outlet pipeline of the first heat exchange tube 802, and the butterfly valve 7 is controlled to be opened, and the exhaust gas is discharged from the first sampling tube 5 through the first pipeline 2 and the transition pipe 4, completing the complete working cycle of the first stage and the second stage.

[0034] When the filter screen 901 needs to be replaced: turn the bolt 903 to align the protruding block of the bolt 903 with the through hole of the limit block 902, pull out the bolt 903, remove the limit block 902, remove the mounting plate 905, and replace the filter screen 901.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An oxidation device for efficiently treating VOCs waste gas, characterized in that: It comprises an oxidation component, a heat exchange component and a filter component (9), wherein the heat exchange component and the filter component (9) are located on one side of the oxidation component; The oxidation assembly comprises an oxidation furnace (1), a first pipeline (2), a second pipeline (3), a transition pipe (4), a first sampling pipe (5) and a second sampling pipe (6); the first sampling pipe (5) and the second sampling pipe (6) are connected to the transition pipe (4); the transition pipe (4) is connected to the first pipeline (2) and the second pipeline (3); a plurality of butterfly valves (7) are arranged on the transition pipe (4); the first sampling pipe (5) and the second sampling pipe (6) are both provided with the filter assembly (9); a first sampling layer (101) is arranged in the oxidation furnace (1); ), a first heat storage layer (102), an oxidation layer (103), a second heat storage layer (104), a second sample introduction layer (106) and two groups of heat preservation layers (108), the first pipe (2) is connected to the first sample introduction layer (101), the second pipe (3) is connected to the second sample introduction layer (106), the first heat storage layer (102), the oxidation layer (103) and the second heat storage layer (104) are all composed of granular heat storage ceramic bodies, and a plurality of groups of electric heating wires (107) are arranged in the oxidation layer (103), and the plurality of groups of electric heating wires (107) are evenly distributed; The heat exchange assembly comprises a heat exchange box (8), wherein a heat storage tank (801), a first heat exchange tube (802) and a second heat exchange tube (803) are arranged in the heat exchange box (8), the inlet and outlet of the first heat exchange tube (802) are both connected to the first pipeline (2), and the inlet and outlet of the second heat exchange tube (803) are both connected to the second pipeline (3); The filter assembly (9) comprises a filter screen (901), a mounting plate (905), a transition plate (906), a pressure sensor (912), and a plurality of groups of limit blocks (902), bolts (903), a mounting block (907), and a buffer assembly; the filter screen (901) is fixedly connected to the middle of the mounting plate (905); the pressure sensor (912) is arranged on the mounting plate (905); and the mounting block (907) is fixedly connected to the transition plate (906).

2. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: The mounting plate (905) is arranged between the limiting block (902) and the buffer assembly, the limiting block (902) is provided with a straight-line through hole and a limiting groove (904) in the middle, the mounting block (907) is provided with a protruding section, the mounting block (907) is provided with a straight-line through hole in the middle, the mounting plate (905) is provided with a through hole at the end thereof, and the protruding section of the mounting block (907) passes through the through hole of the mounting plate (905).

3. The oxidation device for efficiently treating VOCs waste gas according to claim 2 is characterized in that: The buffer assembly comprises a connecting plate (911) and a plurality of groups of sleeves (908), a support rod (909) and a spring (910); the sleeve (908) is fixedly connected to the mounting block (907); the support rod (909) is fixedly connected between the sleeve (908) and the connecting plate (911); the spring (910) is sleeved on the support rod (909); a damping layer is provided at a portion where the support rod (909) and the sleeve (908) are connected; the connecting plate (911) is arranged in a circular ring shape; and the connecting plate (911) is sleeved on a protruding section of the mounting block (907).

4. The oxidation device for efficiently treating VOCs waste gas according to claim 3 is characterized in that: The bolt (903) passes through the through hole of the mounting block (907) and the through hole of the limiting block (902); the mounting block (907), the buffer assembly, the mounting plate (905) and the limiting block (902) are connected via the bolt (903); a protruding block is provided at one end of the bolt (903); the protruding block of the bolt (903) matches the limiting groove (904) on the limiting block (902).

5. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: A mesh plate (109) is provided below the second heat storage layer (104), a base (105) is fixedly connected below the mesh plate (109), and two groups of thermal insulation layers (108) are provided on both sides of the first heat storage layer (102), the oxidation layer (103) and the second heat storage layer (104).

6. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: The first heat exchange tube (802) is located outside the heat storage tank (801), and a portion of the first heat exchange tube (802) is embedded in the heat storage tank (801).

7. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: The second heat exchange tube (803) is located inside the heat storage tank (801), and a portion of the second heat exchange tube (803) is embedded in the heat storage tank (801).

8. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: The inlet and outlet pipelines of the first heat exchange tube (802) are both provided with solenoid valves (10), and the inlet and outlet pipelines of the second heat exchange tube (803) are both provided with solenoid valves (10).

9. The oxidation device for efficiently treating VOCs waste gas according to claim 1 is characterized in that: A heat storage medium is arranged in the heat storage tank (801).

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