A self-circulation dequantization desorption catalysis integrated device

Abstract

The application discloses a self-circulation reduced desorption catalysis integrated device, which comprises a catalytic heat preservation box provided with a switch box door, a bottom support frame is arranged in the catalytic heat preservation box, a molecular sieve module is stacked on the bottom support frame, catalytic electric heating devices and thermal desorption electric heating devices are arranged on the upper and lower sides of the molecular sieve module, a catalytic section temperature sensor is arranged above the catalytic electric heating devices, a gas outlet pipeline is arranged at the top of the catalytic heat preservation box, a catalyst module is arranged in the gas outlet pipeline, a pipeline pressure sensor, an outlet temperature sensor and a VOC detector are arranged on the gas outlet pipeline, a gas inlet pipeline is arranged at the bottom of the catalytic heat preservation box, the gas outlet pipeline is connected with the gas inlet pipeline through a heat preservation hose, a one-way flow guide vane is arranged in the gas inlet pipeline, and a gas inlet temperature sensor, a gas inlet airbag and an exhaust manual valve are arranged on the gas inlet pipeline. The device has high structural integration, can realize batch processing of the molecular sieve module, makes the gas circulate and flow and be decomposed through temperature difference, has high energy utilization rate and good desorption efficiency.

Description

Technical Field

[0001] This invention relates to the field of organic waste gas treatment technology, and in particular to a self-circulating, volume reduction, desorption, and catalytic integrated device. Background Technology

[0002] With rapid industrial development, emissions of volatile organic compounds (VOCs) have continued to increase, becoming one of the main factors causing air pollution. VOCs have a wide range of sources, involving various industries. Currently, the treatment of organic waste gases typically employs activated carbon adsorption-desorption, regenerative thermal oxidation, catalytic combustion, and molecular sieve rotary adsorption concentration. Among these, molecular sieve (zeolite) adsorption materials, due to their regular microporous structure, large specific surface area, adjustable hydrophobicity, high thermal stability, and non-flammability, are gradually replacing activated carbon and are widely used in the treatment of complex waste gases.

[0003] Molecular sieve adsorption-desorption systems are typically integrated designs, making simultaneous desorption of large quantities of molecular sieves impossible. After molecular sieve adsorption saturation, only a small amount of high-temperature gas is usually introduced to desorb VOCs from the sieve. Simple desorption does not completely degrade VOCs, and the desorbed gas still requires further treatment. High-concentration desorbed gas needs to be fed into a downstream catalytic combustion unit, resulting in a large system footprint and low integration. Furthermore, the heat released by catalytic combustion is not effectively recycled for the desorption process, leading to high overall energy consumption, low energy utilization, and low desorption efficiency. Summary of the Invention

[0004] This invention aims to solve the technical problems existing in the prior art and provide a self-circulating, volume reduction, desorption, and catalytic integrated device. The overall structure is highly integrated, occupies a small area, and can realize batch processing of molecular sieve modules. It uses a temperature difference to make the gas circulate and be decomposed. It consumes less electricity, has a high energy utilization rate, is environmentally friendly, and improves desorption efficiency.

[0005] The technical solution of this invention is: a self-circulating, volume-reducing, desorption, and catalytic integrated device, comprising a catalytic insulation box, a switchable door on the catalytic insulation box, a bottom support frame inside the catalytic insulation box, several molecular sieve modules stacked on the bottom support frame, a catalytic electric heating device and a thermal desorption electric heating device respectively on the upper and lower sides of the molecular sieve modules, a catalytic section temperature sensor on the catalytic insulation box above the catalytic electric heating device, an exhaust pipe on the top of the catalytic insulation box, a catalyst module inside the exhaust pipe, a pipe pressure sensor, an outlet temperature sensor, and a VOC detector on the exhaust pipe, an intake pipe on one side of the bottom of the catalytic insulation box, the exhaust pipe being connected to the intake pipe via a heat-insulating hose, a one-way guide vane inside the intake pipe to prevent hot gas backflow, and an intake temperature sensor, an intake airbag, and an exhaust manual valve on the intake pipe.

[0006] Furthermore, in this invention, the switch box door is rotatably located on the front side of the catalytic insulation box, and the switch box door and the catalytic insulation box are connected in a sealed fit.

[0007] Furthermore, the bottom support frame in this invention includes an outer frame, which is connected to the inner wall of the catalytic insulation box. The outer frame is provided with a plurality of longitudinally and transversely distributed support strips, and each support strip cooperates with the outer frame to place the molecular sieve module.

[0008] Furthermore, the molecular sieve module of the present invention includes vertical positioning corner plates distributed at four corners, and multiple horizontal connecting plates distributed vertically and horizontally between two adjacent vertical positioning corner plates. A cross-shaped base frame is provided between the four horizontal connecting plates at the bottom. A support net is provided in the gap between the cross-shaped base frame, the horizontal connecting plates, and the vertical positioning corner plates. Several glass fiber zeolite molecular sieve blocks are stacked on the support net. Each glass fiber zeolite molecular sieve block is wrapped and fixed by the cooperation of each vertical positioning corner plate and each horizontal connecting plate. The support strip is used to place the vertical positioning corner plates of two adjacent molecular sieve modules and the horizontal connecting plates at the bottom.

[0009] Furthermore, the catalytic electric heating device of the present invention includes a plurality of catalytic electric heating tubes, and the thermal desorption electric heating device includes a plurality of thermal desorption electric heating tubes. The plurality of catalytic electric heating tubes and the plurality of thermal desorption electric heating tubes are arranged at intervals along the left and right directions, and the catalyst module is disposed above the catalytic electric heating device.

[0010] Furthermore, the air outlet pipe in this invention has an air outlet end, the air inlet pipe has an air inlet end, and the two ends of the heat-insulating hose are respectively connected to the air outlet end and the air inlet end. The heat-insulating hose includes an inner lining layer, a flexible skeleton layer, a heat insulation layer, and a waterproof and wear-resistant layer arranged sequentially from the inside to the outside.

[0011] Furthermore, in this invention, the inner lining layer is a modified fluoroplastic layer, the flexible skeleton layer is a high-temperature fiberglass cloth layer, the thermal insulation layer is an aluminum silicate insulation blanket, and the waterproof and wear-resistant layer is a silicone-coated fiberglass cloth.

[0012] Furthermore, in this invention, the air intake pipe is located on one side of the thermal desorption electric heating device, and the unidirectional guide vane has multiple pieces, which are arranged vertically at intervals inside the air intake end of the air intake pipe. The upper end of the unidirectional guide vane is connected and fixed to the air intake end, and the lower end of the unidirectional guide vane extends inward at an angle.

[0013] Compared with the prior art, the present invention has the following advantages: 1) The present invention has a highly integrated overall structure and a small footprint. Once the molecular sieve module is filled in the catalytic insulation box, a catalytic reaction can be carried out to desorb the organic matter adsorbed in the glass fiber zeolite molecular sieve block at high temperature, thereby realizing the batch processing of molecular sieve modules. 2) This invention utilizes the thermodynamics of gas, creating a temperature difference to cause the gas to circulate and decompose. The entire process does not require motors or other power equipment to drive the gas, resulting in low electricity consumption and high energy utilization. 3) In this invention, the thermal insulation hose is designed as a multi-layer composite structure, and all layers are made of flexible soft materials. It can be bent and misaligned at will, which can effectively solve the problems of low-temperature gas compression and high-temperature gas expansion. At the same time, the air volume inside the thermal insulation hose can be detected according to its shape. Before the device is put into operation, the initial air filling amount of the thermal insulation hose can be adjusted according to the specific organic matter to ensure that there is enough oxygen to catalyze the oxidation of organic matter in the molecular sieve module. 4) Temperature sensors and pipeline pressure sensors are installed at key locations of the device of this invention for online temperature and pressure monitoring. Under different operating conditions, the heating power of the electric heating device can be adjusted according to the feedback of the sensors to ensure the catalytic temperature, and the internal pressure value of the device is monitored at all times to ensure safe operation. The VOC detector installed at the pipeline outlet can monitor the VOCs concentration inside the catalytic insulation box. The operating variables of the equipment can be adjusted according to the feedback of the VOC detector to decompose organic matter into carbon dioxide and water in a near-complete catalytic manner, thus ensuring desorption efficiency. 5) In this invention, by manually squeezing the intake airbag and rotating to open the exhaust manual valve, the air content inside the device can be adjusted to ensure the continuous catalytic oxidation. 6) The entire treatment process of this invention does not involve the discharge of waste gas. The catalytic desorption operation time of the device is determined by an online VOC detector, and the feasibility of catalytic oxidation is evaluated by judging the expansion state of the external insulation hose, which is environmentally friendly. Attached Figure Description

[0014] Figure 1This is a perspective view of the present invention; Figure 2 for Figure 1 A magnified view of part a in the middle; Figure 3 This is a perspective view of the invention from another angle (where the thermal insulation hose is not shown). Figure 4 for Figure 3 A magnified view of part b in the middle; Figure 5 This is a schematic diagram of the internal structure of the molecular sieve module described in this invention; Figure 6 This is a bottom view of the molecular sieve module described in this invention; Figure 7 This is a front view of the present invention (wherein the thermal insulation hose is not shown); Figure 8 for Figure 7 AA section view; Figure 9 This is a right view of the present invention (wherein the thermal insulation hose is not shown); Figure 10 for Figure 9 BB cross-sectional view; Figure 11 This is a schematic diagram illustrating the usage state of the present invention.

[0015] in: 1. Catalytic insulated box; 2. Opening and closing the control box door; 3. Bottom support frame; 301. Outer frame; 302. Support strip; 4. Molecular sieve module; 401. Vertical positioning corner plate; 402. Horizontal connecting plate; 403. Cross base frame; 404. Support mesh; 405. Glass fiber zeolite molecular sieve block; 5. Catalytic electric heating device; 501. Catalytic electric heating tube; 6. Thermal desorption electric heating device; 601. Thermal desorption electric heating tube; 7. Catalytic converter temperature sensor; 8. Air outlet pipe; 801. Air outlet end; 9. Catalyst module; 10. Pipeline pressure sensor; 11. Outlet temperature sensor; 12. VOC detector; 13. Intake pipe; 1301. Intake end; 14. Thermal insulated hose; 15. One-way air guide vane; 16. Intake air temperature sensor; 17. Intake airbag; 18. Exhaust manual valve. Detailed Implementation

[0016] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Example: The accompanying drawings illustrate a specific embodiment of the self-circulating, volume-reducing, desorption, and catalytic integrated device of the present invention. (Refer to...) Figure 1 The system mainly includes a catalytic insulation box 1, with a switch door 2 on the front side of the catalytic insulation box 1. One side of the switch door 2 is rotatably connected to the catalytic insulation box 1, and the switch door 2 can be rotated open. The switch door 2 and the catalytic insulation box 1 are connected in a sealed fit. A sealing gasket can be provided on the switch door 2 or the catalytic insulation box 1. When the switch door 2 is closed, the sealing gasket is sandwiched between the switch door 2 and the catalytic insulation box 1, thereby achieving an overall seal and preventing gas leakage. The switch door 2 and the catalytic insulation box 1 can be locked together by a locking assembly or other connecting components. In this embodiment, the specific structure and opening and closing method of the locking assembly can be found in the locking assembly and opening and closing method disclosed in Chinese Utility Model Patent Application No. 202220532469.X.

[0018] The lower part of the catalytic insulation box 1 is provided with a bottom support frame 3, and several molecular sieve modules 4 are stacked on the bottom support frame 3.

[0019] Combination Figures 1 to 4 , Figures 7 to 8 As shown, the bottom support frame 3 specifically includes an outer frame 301, which is U-shaped. The four outer walls of the outer frame 301 are fixedly connected to the four inner walls of the catalytic insulation box 1. The interior of the outer frame 301 is provided with several longitudinally and transversely distributed support strips 302. In this embodiment, as shown... Figure 8 As shown, there are two support bars 302 distributed vertically and two horizontally, with the four support bars 302 integrally formed, dividing the interior of the outer frame 301 into nine placement areas. Both ends of each support bar 302 are connected to the inner wall of the outer frame 301. The four support bars 302 and the outer frame 301 can also be integrally formed, resulting in higher overall structural strength. The top surface of the four support bars 302 is flush with the top surface of the outer frame 301, allowing for the placement of the molecular sieve module 4, supporting its weight, and ensuring its stable placement.

[0020] Combination Figure 5 , Figure 6As shown, the molecular sieve module 4 has the following specific structure: it includes four vertical positioning corner plates 401 arranged at the four corners, each in an "L" shape, and the four vertical positioning corner plates 401 are vertically arranged. Between two adjacent vertical positioning corner plates 401, there are multiple horizontal connecting plates 402 arranged vertically at intervals. The horizontal connecting plates 402 are horizontally arranged and located on the outside of the vertical positioning corner plates 401. The two ends of the horizontal connecting plates 402 are fixedly connected to the outer surfaces of the vertical positioning corner plates 401 on both sides. In this embodiment, four horizontal connecting plates 402 are provided on the outer side of the bottom of the four vertical positioning corner plates 401. The four horizontal connecting plates 402 at the bottom are at the same height, and the bottom surface of the four horizontal connecting plates 402 at the bottom is flush with the bottom surface of the four vertical positioning corner plates 401. Four horizontal connecting plates 402 are provided on the outer side of the top of the four vertical positioning corner plates 401. The four horizontal connecting plates 402 at the top are at the same height, and the top surface of the four horizontal connecting plates 402 at the top is flush with the top surface of the four vertical positioning corner plates 401. Twelve horizontal connecting plates 402 are provided on the outer side of the middle of the four vertical positioning corner plates 401. The twelve horizontal connecting plates 402 are arranged in three layers, with four horizontal connecting plates 402 in each layer at the same height.

[0021] Each vertical positioning corner plate 401 and each horizontal connecting plate 402 cooperate to form a positioning area for placing the glass fiber zeolite molecular sieve block 405. After the glass fiber zeolite molecular sieve block 405 is stacked in this positioning area, the three layers of horizontal connecting plates 402 on the middle outer side are all located on the outer side between the upper and lower glass fiber zeolite molecular sieve blocks 405.

[0022] To prevent the glass fiber zeolite molecular sieve block 405 from falling, a cross-shaped base frame 403 is provided between the four horizontal connecting plates 402 at the bottom. The four ends of the cross-shaped base frame 403 are fixedly connected to the inner sides of the four horizontal connecting plates 402 at the bottom. A support mesh 404 is provided in the gap between the cross-shaped base frame 403, the four horizontal connecting plates 402 at the bottom, and the four vertical positioning corner plates 401. The cross-shaped base frame 403 and the support mesh 404 cooperate to support the glass fiber zeolite molecular sieve block 405. Figure 6 As shown. In this embodiment, four glass fiber zeolite molecular sieve blocks 405 are laid flat on the cross-shaped base frame 403 and the support net 404. They are then stacked upwards in a structure of four glass fiber zeolite molecular sieve blocks 405 per layer, for a total of four layers, as shown. Figure 5 As shown. In each molecular sieve module 4, each glass fiber zeolite molecular sieve block 405 is wrapped and fixed by each vertical positioning corner plate 401 and each horizontal connecting plate 402, and the cross base frame 403 and the support net 404 play a supporting role.

[0023] When the molecular sieve modules 4 are stacked inside the catalytic insulation box 1, they are supported and positioned by the bottom support frame 3. For example... Figure 8As shown, the nine placement areas on the outer frame 301 of the bottom support frame 3 correspond to the placement of nine molecular sieve modules 4. The support strips 302 of the bottom support frame 3 are used to place the vertical positioning corner plates 401 of two adjacent molecular sieve modules 4 and the horizontal connecting plate 402 at the bottom, as shown. Figure 2 As shown, where, Figure 1 and Figure 2 The outer frame 301 of the bottom support frame 3 is not shown. In actual use, the molecular sieve module 4 is placed stably and without tilting by the cooperation between the outer frame 301 and the support strip 302. After the nine molecular sieve modules 4 at the bottom are placed, nine more molecular sieve modules 4 can be stacked on top of the bottom layer, using the vertical positioning corner plate 401 to achieve contact placement, such as... Figure 1 As shown. To further ensure the stable placement of the upper molecular sieve module 4, a limiting rod can be installed on the outside of the upper molecular sieve module 4. The limiting rod is used to prevent the upper molecular sieve module 4 from tilting forward. When installing the limiting rod, an installation plate can be installed on the inner wall of the left and right sides of the catalytic insulation box 1, and an installation groove can be opened on the top of the installation plate. The two ends of the limiting rod can be aligned with the installation grooves on both sides and placed downwards.

[0024] In this embodiment, the glass fiber zeolite molecular sieve block 405 of the molecular sieve module 4 has glass fiber as its main structure, and the surface of the glass fiber is loaded with molecular sieve powder of different compositions. This product is already commercially available. The specific surface area of ​​the glass fiber zeolite molecular sieve block 405 is ≥500 m². 2 The adsorption capacity for VOCs such as benzene series compounds and esters reaches 0.18-0.25 g / g (25℃, 1000 ppm), and its glass fiber skeleton combines mechanical strength and temperature resistance (long-term tolerance ≤350℃). Compared with conventional honeycomb activated carbon, this module has a stronger adsorption capacity for specific organic pollutants and a higher desorption temperature.

[0025] Furthermore, in this embodiment, combined with Figure 1 , Figure 7 The catalytic heating device 5 and the thermal desorption heating device 6 are respectively installed in the catalytic insulation box 1 on the upper and lower sides of the molecular sieve module 4. The catalytic heating device 5 specifically includes several catalytic heating tubes 501, and the thermal desorption heating device 6 specifically includes several thermal desorption heating tubes 601. The several catalytic heating tubes 501 and the several thermal desorption heating tubes 601 are arranged at intervals along the left and right direction to achieve uniform heating.

[0026] A catalytic section temperature sensor 7 is installed on the catalytic insulation box 1 above the catalytic electric heating device 5. The catalytic section temperature sensor 7 is used to detect the catalytic temperature of the catalytic electric heating device 5.

[0027] Combination Figure 1 , Figure 10The top of the catalytic insulation box 1 is equipped with an exhaust pipe 8, and a catalyst module 9 is installed inside the exhaust pipe 8. The catalyst module 9 is located above the catalytic electric heating device 5. The exhaust pipe 8 at the rear end of the catalyst module 9 is also equipped with a pipe pressure sensor 10, an outlet temperature sensor 11, and a VOC detector 12, which respectively detect the pipe pressure, outlet temperature, and VOC concentration. The VOC detector 12 is a PID / FID (photoionization detector / flame ionization detector).

[0028] An air inlet pipe 13 is located at the bottom right side of the catalytic insulation box 1, and the air inlet pipe 13 is located to the right of the thermal desorption electric heating device 6. The air outlet pipe 8 has an air outlet end 801, and the air inlet pipe 13 has an air inlet end 1301. The air outlet end 801 and the air inlet end 1301 are connected by an insulated hose 14. The insulated hose 14 is a four-layer composite pipe, which specifically includes an inner lining layer, a flexible skeleton layer, a thermal insulation layer, and a waterproof and wear-resistant layer arranged sequentially from the inside out.

[0029] In this embodiment, the inner lining layer is a modified fluoroplastic layer used to contact high-temperature corrosive flue gas; a flexible skeleton layer covers the outer surface of the inner lining layer, and the flexible skeleton layer is a high-temperature fiberglass cloth layer that is tensile and tear resistant; the thermal insulation layer is an aluminum silicate insulation blanket, which can effectively suppress the loss of heat inside the pipeline; the waterproof and wear-resistant layer is silicone-coated fiberglass cloth, which serves as waterproof, wear-resistant, and fixing. All layers are flexible soft materials that can be bent and misaligned at will. The thermal insulation hose 14 can effectively solve the problem of low-temperature gas compression and high-temperature gas expansion. At the same time, the air volume inside the thermal insulation hose 14 can be detected according to its shape. Before the device is put into operation, the initial air filling amount of the thermal insulation hose 14 can be adjusted according to the specific organic matter to ensure that there is enough oxygen to catalytically oxidize the organic matter in the molecular sieve module 4.

[0030] The intake duct 13 is equipped with a unidirectional guide vane 15 to prevent hot gas backflow. Multiple unidirectional guide vanes 15 are spaced vertically within the intake end 1301 of the intake duct 13. The upper end of each unidirectional guide vane 15 is connected and fixed to the intake end 1301, while the lower end extends inward at an angle. The unidirectional guide vane 15 is designed to prevent high-temperature gas from flowing back into the catalytic converter 1.

[0031] An intake temperature sensor 16 is also provided at the top of the intake pipe 13, which is used to detect the intake temperature. An intake airbag 17 and an exhaust manual valve 18 are also provided at the front of the intake pipe 13. In this embodiment, the specific structure of the intake airbag 17 can be found in the intake airbag structure disclosed in Chinese Utility Model Patent Application No. 202223512410.3, and will not be described again here. By manually squeezing the intake airbag 17 and rotating to open the exhaust manual valve 18, external gas can enter the intake airbag 17 and flow into the catalytic converter 1, thereby adjusting the air content inside the catalytic converter 1 and ensuring the continuous catalytic oxidation.

[0032] In practical use, once the catalytic insulation box 1 is full of molecular sieve modules 4, the switch box door 2 is closed, and a catalytic reaction can be carried out to desorb the organic matter adsorbed in the glass fiber zeolite molecular sieve block 405 at high temperature. This process mainly utilizes the thermodynamics of gas, without a wind-driven device. Its main principle is to use the temperature difference between two sets of electric heating devices, catalytic electric heating device 5 and thermal desorption electric heating device 6, at different locations to drive the flow of gas, and to achieve the purpose of gas circulation within the device with the help of unidirectional guide vanes 15. The specific process is as follows: First, the catalytic electric heating device 5 is turned on, and the catalytic temperature in the area of ​​the catalytic electric heating device 5 is detected by the catalytic section temperature sensor 7 to reach the required temperature. Then, the thermal desorption electric heating device 6 is turned on to blow out the organic matter in the glass fiber zeolite molecular sieve block 405 at high temperature. After the gas expands due to heat at the top of the device, the hot gas flow enters the gas outlet pipe 8, flows through the catalyst module 9, and then enters the insulation hose 14. Figure 11 As shown, the insulated hose 14 expands, and the one-way guide vanes 15 inside the intake pipe 13 only allow airflow into the equipment. The airflow, under temperature changes, can recirculate through the intake pipe 13 and enter the bottom of the catalytic insulation box 1. The entire airflow circulation is as follows: when the temperature of the upper catalytic section is higher than the temperature of the lower desorption section, the hot gas enters the insulated hose 14 through the outlet 801; when the temperature of the lower desorption section is higher than the temperature of the upper catalytic section, the hot gas enters the catalyst module 9 upwards through the molecular sieve module 4. This creates a temperature difference within a certain range, causing the gas inside the device to circulate and be decomposed. The entire treatment process of this invention does not involve the discharge of waste gas. The catalytic desorption operation time of the device is determined by the VOC detector 12, and the feasibility of catalytic oxidation is assessed by judging the expansion state of the external insulated hose 14.

[0033] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A self-circulating, volume-reducing, desorption, and catalytic integrated device, characterized in that: The system includes a catalytic insulation box (1), which has a switchable door (2). Inside the catalytic insulation box (1) is a bottom support frame (3), on which several molecular sieve modules (4) are stacked. A catalytic electric heating device (5) and a thermal desorption electric heating device (6) are respectively located on the upper and lower sides of each molecular sieve module (4). A catalytic section temperature sensor (7) is located on the catalytic insulation box (1) above the catalytic electric heating device (5). An exhaust pipe (8) is located at the top of the catalytic insulation box (1). The catalyst module (9) is provided inside. The outlet pipe (8) is equipped with a pipe pressure sensor (10), an outlet temperature sensor (11), and a VOC detector (12). The bottom side of the catalytic insulation box (1) is provided with an inlet pipe (13). The outlet pipe (8) is connected to the inlet pipe (13) through a heat-insulating hose (14). The inlet pipe (13) is provided with a one-way guide vane (15) to prevent hot air backflow. The inlet pipe (13) is also equipped with an inlet temperature sensor (16), an inlet air bag (17), and an exhaust manual valve (18).

2. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 1, characterized in that: The switch box door (2) is rotatably located on the front side of the catalytic insulation box (1), and the switch box door (2) and the catalytic insulation box (1) are sealed together.

3. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 1, characterized in that: The bottom support frame (3) includes an outer frame (301), which is connected to the inner wall of the catalytic insulation box (1). The outer frame (301) is provided with a number of longitudinally and transversely distributed support strips (302), and each support strip (302) cooperates with the outer frame (301) to place the molecular sieve module (4).

4. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 3, characterized in that: The molecular sieve module (4) includes vertical positioning corner plates (401) distributed at four corners. Multiple horizontal connecting plates (402) are arranged vertically and horizontally spaced between two adjacent vertical positioning corner plates (401). A cross base frame (403) is provided between the four horizontal connecting plates (402) at the bottom. A support net (404) is provided in the gap between the cross base frame (403), the horizontal connecting plates (402), and the vertical positioning corner plates (401). Several glass fiber zeolite molecular sieve blocks (405) are stacked on the support net (404). Each glass fiber zeolite molecular sieve block (405) is wrapped and fixed by each vertical positioning corner plate (401) and each horizontal connecting plate (402). The support strip (302) is used to place the vertical positioning corner plates (401) of two adjacent molecular sieve modules (4) and the horizontal connecting plates (402) at the bottom.

5. The self-circulating, volume-reducing, desorption, and catalytic integrated device according to claim 1, characterized in that: The catalytic electric heating device (5) includes several catalytic electric heating tubes (501), and the thermal desorption electric heating device (6) includes several thermal desorption electric heating tubes (601). The several catalytic electric heating tubes (501) and the several thermal desorption electric heating tubes (601) are arranged at intervals along the left and right directions. The catalyst module (9) is located above the catalytic electric heating device (5).

6. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 1, characterized in that: The air outlet pipe (8) has an air outlet end (801), the air inlet pipe (13) has an air inlet end (1301), and the two ends of the heat-insulating hose (14) are respectively connected to the air outlet end (801) and the air inlet end (1301). The heat-insulating hose (14) includes an inner lining layer, a flexible skeleton layer, a heat insulation layer, and a waterproof and wear-resistant layer arranged sequentially from the inside to the outside.

7. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 6, characterized in that: The inner lining layer is a modified fluoroplastic layer, the flexible skeleton layer is a high-temperature fiberglass cloth layer, the thermal insulation layer is an aluminum silicate insulation blanket, and the waterproof and wear-resistant layer is a silicone-coated fiberglass cloth.

8. The self-circulating, volume reduction, desorption, and catalytic integrated device according to claim 6, characterized in that: The air intake pipe (13) is located on one side of the thermal desorption electric heating device (6). The one-way guide vane (15) has multiple pieces, which are arranged vertically at intervals in the air intake end (1301) of the air intake pipe (13). The upper end of the one-way guide vane (15) is connected and fixed to the air intake end (1301), and the lower end of the one-way guide vane (15) extends inward at an angle.

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