Method and device for adsorption of acf and catalytic regeneration at room temperature

Abstract

The application provides an ACF adsorption-normal temperature catalytic regeneration method and device, which comprises an adsorption unit and a desorption unit, the adsorption unit comprises an adsorption equipment, a main fan and an exhaust cylinder, the desorption unit comprises an integrated electrochemical equipment, a catalytic reaction equipment and a desorption fan, and the electrochemical equipment and the catalytic reaction equipment are connected with the adsorption equipment through metal hoses. During adsorption, waste gas enters the adsorption equipment through an air inlet pipeline, is adsorbed and purified, and is discharged by the exhaust cylinder; during desorption, the electrochemical equipment, the adsorption equipment and the catalytic reaction equipment form a circulating path to realize closed loop circulation desorption. The application adopts a green island mode operation, the desorption adopts offline desorption, a plurality of sets of adsorption devices can correspond to one set of desorption device, the desorption device is convenient to disassemble, the problem that the equipment is inconvenient to move due to a large scale is avoided, and the green island regeneration mode of waste gas treatment equipment between different buildings and different enterprises can be realized.

Description

Technical fields:

[0001] This invention belongs to the field of environmental pollutant treatment technology, specifically relating to an ACF adsorption-room temperature catalytic regeneration method and apparatus. Background technology:

[0002] The treatment of volatile organic compounds (VOCs) has been a focus of environmental protection workers in recent years. At present, the treatment of industrial organic waste gas has achieved initial results, but there are still many problems in the treatment of organic waste gas generated by laboratories of universities, enterprises and testing institutions. Conventional industrial waste gas treatment technologies cannot be directly applied, and the treatment is quite difficult.

[0003] Laboratory exhaust gases are characterized by large collection volumes and dispersed collection points, and contain a complex variety of pollutants, including both inorganic and organic compounds. Considering factors such as equipment size, processing capacity, cost, operation and maintenance, and secondary pollution, adsorption is currently one of the most suitable methods for treating laboratory exhaust gases. However, conventional disposable adsorption methods suffer from low purification efficiency and high operating costs; while thermal desorption + RTO / RCO devices offer good treatment results, their high investment costs make them unsuitable for the large-volume, low-concentration laboratory industry. Therefore, there is an urgent need to develop new laboratory exhaust gas treatment technologies or devices with high purification efficiency and low investment and operating costs.

[0004] Currently, laboratory waste gas is mostly treated using disposable activated carbon adsorption. However, management departments in various regions are increasingly stringent on the replacement requirements for disposable activated carbon, stipulating that the replacement cycle should generally not exceed 500 hours of cumulative operation or 3 months. Overall, activated carbon is an ideal technology for treating low-concentration VOCs, but to ensure purification efficiency, in addition to ensuring the quality of the activated carbon, it needs to be replaced promptly, and the replaced activated carbon must be disposed of as hazardous waste, resulting in high operation and maintenance costs. To reduce operating costs, some universities have set up fixed regeneration points for off-site regeneration of activated carbon. The activated carbon is periodically removed and sent to regeneration equipment for high-temperature regeneration. The regenerated activated carbon is then recycled, and the waste gas generated during thermal regeneration is absorbed by a water scrubbing tower before being discharged. This process is cumbersome, and the waste gas after thermal regeneration is not effectively purified, causing secondary pollution to the environment. It is difficult to meet increasingly stringent environmental protection requirements and standards, hindering its widespread application.

[0005] To address the issues of cumbersome operation and secondary pollution during ex-situ regeneration of activated carbon, this solution proposes an ACF adsorption-room-temperature catalytic regeneration treatment process and designs a laboratory gas treatment device with high purification efficiency and low investment and operating costs to solve the aforementioned problems. Summary of the Invention:

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an ACF adsorption-room-temperature catalytic regeneration method and apparatus. This scheme employs a green island mode for ACF adsorption-room-temperature catalytic regeneration, using only one mobile electrochemical circulation desorption device to regenerate multiple waste gas treatment devices in a university laboratory. The equipment can be placed on the laboratory rooftop, allowing staff to move the desorption device for in-situ regeneration of the adsorption equipment. This simplifies operation and significantly reduces operating costs.

[0007] The present invention adopts the following technical solution:

[0008] (I) An ACF adsorption-room-temperature catalytic regeneration device, comprising an adsorption unit and a desorption unit; the adsorption unit comprises an inlet pipe, an adsorption device, an outlet pipe, a main fan, and an exhaust stack connected in sequence, and both the inlet pipe and the outlet pipe are equipped with adsorption air valves; the desorption unit comprises an electrochemical device, a catalytic reaction device, and a desorption fan; the inlet end of the electrochemical device is connected to the inlet pipe, and the inlet pipe is equipped with a regulating air valve, and the outlet end of the electrochemical device is installed with a first flexible hose; the inlet end of the catalytic reaction device is installed with a second flexible hose, and the outlet end is connected to the inlet end of the electrochemical device through a connecting pipe; the inlet of the desorption fan is connected to the outlet end of the catalytic reaction device, and the outlet of the desorption fan is connected to the connecting pipe; the desorption inlet end of the adsorption device is detachably connected to the first flexible hose, and a desorption air valve is provided between the desorption inlet end of the adsorption device and the first flexible hose; the desorption outlet end of the adsorption device is detachably connected to the second flexible hose, and a desorption air valve is provided between the desorption outlet end of the adsorption device and the second flexible hose.

[0009] Furthermore, the adsorption device includes an adsorption device housing and several adsorption filter cartridges. The adsorption filter cartridges are vertically arranged inside the adsorption device housing, and the outer surface of the adsorption filter cartridges is covered with carbon fiber adsorbent to adsorb waste gas. The adsorption device housing is provided with an adsorption waste gas inlet, an adsorption waste gas outlet, a desorption waste gas inlet, and a desorption waste gas outlet. The adsorption waste gas inlet and the desorption waste gas outlet are located on one side of the adsorption device housing, with the adsorption waste gas inlet positioned above the desorption waste gas outlet. The desorption waste gas inlet and the adsorption waste gas outlet are located on the other side of the adsorption device housing, with the desorption waste gas inlet positioned above the adsorption waste gas outlet.

[0010] Furthermore, the electrochemical equipment, catalytic reaction equipment, desorption fan, air inlet pipe, regulating valve, first hose, and second hose are integrated into one unit to form an integrated desorption device; the integrated desorption device also includes a mobile base and a power supply unit; the electrochemical equipment, catalytic reaction equipment, power supply unit, desorption fan, air inlet pipe, regulating valve, first hose, and second hose are all installed above the mobile base; several rollers are installed below the mobile base.

[0011] Furthermore, the power supply equipment is fixedly installed on the mobile base, the catalytic reaction equipment is installed on the power supply equipment, and the electrochemical equipment is installed on the catalytic reaction equipment; the desorption fan is fixedly installed on the mobile base and connected to the outlet end of the catalytic reaction equipment; the inlet pipe is distributed above the desorption fan and connected to the inlet end of the electrochemical equipment, and the regulating valve is set on the inlet pipe; the first hose and the second hose are set on the same side of the electrochemical equipment and connected to the outlet end of the electrochemical equipment and the inlet end of the catalytic reaction equipment, respectively.

[0012] Furthermore, the electrochemical device includes an electrochemical device housing, a DBD plasma generator, and a dry filter assembly; both the DBD plasma generator and the dry filter assembly are disposed inside the electrochemical device housing, the dry filter assembly is disposed at the air inlet end, and the DBD plasma generator is disposed between the dry filter assembly and the air outlet; an electrochemical device maintenance port is provided on the side of the electrochemical device housing.

[0013] Furthermore, the catalytic reaction device includes a catalytic reaction device shell and a catalyst bed, wherein the catalyst bed is installed inside the catalytic reaction device shell and a catalyst is disposed on the catalyst bed.

[0014] Furthermore, a gas inlet and a gas outlet are respectively provided on both sides of the catalytic reaction equipment shell, and a catalytic equipment maintenance port is provided on the side of the catalytic reaction equipment shell.

[0015] Furthermore, both the desorption unit and the adsorption unit are equipped with a temperature control system to monitor the temperature of the carbon fiber adsorbent and catalyst bed during the closed-loop desorption process. When the temperature exceeds 85°C, the temperature control system is interlocked with the desorption fan, and the system stops operating.

[0016] Furthermore, the desorption unit is also equipped with a T-connector, which is connected to the air inlet pipe, the air outlet of the electrochemical equipment, and the connecting pipe, respectively.

[0017] (ii) A regeneration method based on the ACF adsorption-room temperature catalytic regeneration device according to claim 1, comprising:

[0018] S1, Adsorption stage: Open the adsorption air valve and main fan, close the desorption air valve, and the waste gas generated in the laboratory enters the adsorption equipment through the air inlet pipe. After the waste gas is adsorbed and purified by carbon fiber adsorbent, it is discharged into the air through the exhaust stack.

[0019] S2, Desorption Stage: After the carbon fiber adsorbent is saturated, connect the first hose and the second hose to the inlet and outlet of the adsorption equipment, respectively. Close the adsorption air valve and the main fan, and open the desorption air valve. Adjust the regulating air valve to its maximum opening, and turn on the desorption fan and electrochemical equipment in sequence. The electrochemical equipment, adsorption equipment, and catalytic reaction equipment form a circulation path. Gradually close the regulating air valve to achieve closed-loop desorption. After the carbon fiber adsorbent is completely regenerated, turn off the electrochemical equipment. After the closed-loop reaction continues for a period of time, open the adsorption air valve and the main fan at the outlet of the adsorption equipment. The gas is discharged from the exhaust stack. Then, gradually close the desorption fan and the desorption air valve, separate the first hose and the second hose from the adsorption equipment, and perform cyclic desorption on the next equipment.

[0020] Furthermore, during closed-loop desorption, the concentration of VOCs in the circulating gas is detected by a gas detection device to determine whether the carbon fiber adsorbent has been completely regenerated.

[0021] The beneficial effects of this invention are:

[0022] (1) The ACF adsorption-room temperature catalytic regeneration process of the present invention adopts the green island mode operation, and multiple waste gas treatment systems in the same laboratory unit share one electrochemical cycle desorption device, resulting in low investment and operating costs.

[0023] (2) The adsorption unit of the present invention can use carbon fiber adsorbent with catalyst supported. The adsorption material has uniform pore size and large specific surface area, which can efficiently adsorb VOCs. During desorption, the strong oxidizing groups generated by the electrochemical device can couple with the room temperature catalyst supported on the carbon fiber to further degrade the VOCs adsorbed by the carbon fiber, which can realize in-situ regeneration of the adsorbent and effectively extend the service life of the adsorbent.

[0024] (3) The present invention adopts electrochemical cyclic desorption, which uses electrochemical equipment to generate strong oxidizing groups. The strong oxidizing groups are coupled with room temperature mineral catalysts to reduce the reaction activation energy and degrade VOCs on the surface of the catalyst, thereby improving the purification efficiency. The closed-loop cyclic desorption can make VOCs decompose more thoroughly and avoid the problem of secondary pollution such as VOCs and O3.

[0025] (4) The desorption unit of the present invention adopts a modular design, integrating electrochemical equipment, catalytic reaction equipment, power supply equipment and desorption fan into one unit to form an integrated desorption equipment. The individual modules are connected by bolts, which makes disassembly convenient. It can not only realize the regeneration of adsorbent of the exhaust gas treatment equipment in the same building, but also realize the regeneration of adsorbent of exhaust gas treatment equipment in different buildings and different enterprises. Attached image description:

[0026] Figure 1 This is a schematic diagram of the overall structure of the system of the present invention;

[0027] Figure 2 This is a schematic diagram of the adsorption device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the integrated desorption device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the electrochemical device according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the catalytic reaction equipment according to an embodiment of the present invention;

[0031] The labels in the attached diagram are as follows: 1. Adsorption air valve; 2. Desorption air valve; 3. Adsorption equipment; 4. Main fan; 5. Exhaust stack; 6. Temperature control system; 7. Electrochemical equipment; 8. Catalytic reaction equipment; 9. Power supply equipment; 11. Regulating air valve; 12. Desorption fan; 14. Mobile base; 15. First hose; 16. Second hose; 17. Connecting pipe; 31. Adsorption equipment housing; 32. Adsorption waste gas inlet; 33. Adsorption waste gas outlet; 34. Adsorption filter cartridge; 35. Carbon fiber adsorbent; 36. Desorption waste gas inlet; 37. Desorption waste gas outlet; 71. Electrochemical equipment housing; 72. Air inlet; 73. Air outlet; 74. Electrochemical equipment maintenance port; 75. Dry filter assembly; 76. DBD plasma generator; 81. Catalytic reaction equipment housing; 82. Gas inlet; 83. Gas outlet; 84. Catalytic equipment maintenance port; 85. Catalyst bed. Detailed implementation method:

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] This invention provides an ACF adsorption-room temperature catalytic regeneration device, comprising three adsorption units and one desorption unit.

[0035] Reference Figure 1As shown, the adsorption unit includes an inlet pipe, an adsorption device 3, an outlet pipe, a main fan 4, and an exhaust stack 5 connected in sequence. Both the inlet and outlet pipes are equipped with adsorption air valves 1. The desorption unit includes an electrochemical device 7, a catalytic reaction device 8, and a desorption fan 12. The inlet end of the electrochemical device 7 is connected to the inlet pipe, and the inlet pipe is equipped with a regulating air valve 11. The amount of fresh air supplied can be adjusted by the regulating valve 11. A first flexible hose 15 is installed at the outlet end of the electrochemical device 7. A second flexible hose 15 is installed at the inlet end of the catalytic reaction device 8. The outlet of the hose 16 is connected to the inlet of the electrochemical device 7 via a connecting pipe 17. The inlet of the desorption fan 12 is connected to the outlet of the catalytic reaction device 8, and the outlet of the desorption fan 12 is connected to the connecting pipe 17. The desorption inlet of the adsorption device 3 is detachably connected to the first hose 15, and a desorption valve 2 is provided between the desorption inlet of the adsorption device 3 and the first hose 15. The desorption outlet of the adsorption device 3 is detachably connected to the second hose 16, and a desorption valve 2 is provided between the desorption outlet of the adsorption device 3 and the second hose 16.

[0036] Reference Figure 2 In this embodiment of the invention, the adsorption device 3 includes an adsorption device housing 31 and three sets of adsorption filter cartridges 34 with large contact areas and small footprints. The adsorption filter cartridges 34 are vertically arranged inside the adsorption device housing 31, and the adsorption filter cartridges 34 are coated with carbon fiber adsorbent 35 to adsorb waste gas. The carbon fiber adsorbent 35 is carbon fiber loaded with a catalyst, and its preparation method is based on the method described in the invention patent with publication number CN113663729A entitled "A High-Efficiency Carbon Fiber Supported Catalyst and Its Preparation Method." Under the action of strong oxidizing groups, it can achieve the decomposition of VOCs at room temperature. The specific surface area of ​​the catalyst-loaded carbon fiber reaches 1100 m². 2 The large specific surface area allows VOCs to accumulate in the pores, and the desorbed gas contains a large number of strong oxidizing groups. Under the action of the catalyst, the decomposition and desorption of VOCs in the pores can be accelerated. Incompletely decomposed VOCs will enter the desorption system catalytic reaction equipment for further catalytic decomposition.

[0037] Reference Figure 2 In this embodiment of the invention, the adsorption device housing 31 is provided with an adsorption waste gas inlet 32, an adsorption waste gas outlet 33, a desorption waste gas inlet 36, and a desorption waste gas outlet 37; the adsorption waste gas inlet 32 ​​and the desorption waste gas outlet 37 are located on one side of the adsorption device housing 31, with the adsorption waste gas inlet 32 ​​positioned above the desorption waste gas outlet 37; the desorption waste gas inlet 36 and the adsorption waste gas outlet 33 are located on the other side of the adsorption device housing 31, with the desorption waste gas inlet 36 positioned above the adsorption waste gas outlet 33.

[0038] Reference Figure 3In this embodiment, the desorption unit integrates the electrochemical device 7, the catalytic reaction device 8, the desorption fan 12, the power supply device 9, the air inlet pipe, the regulating valve 11, the first hose 15, and the second hose 16 into one unit to form an integrated desorption device. It adopts offline electrochemical cycle desorption, which can reduce the desorption air volume. The desorption air volume is only 1 / 10 of the adsorption air volume. Therefore, the desorption device accounts for a small proportion. It adopts a roller design and can move freely.

[0039] Specifically, the electrochemical device 7, catalytic reaction device 8, power supply device 9, and desorption fan 12 are bolted to the movable base 14, arranged vertically to greatly reduce the space occupied by the equipment. The power supply device 9 is fixedly installed on the movable base 14, the catalytic reaction device 8 is installed on the power supply device 9, and the electrochemical device 7 is installed on the catalytic reaction device 8. The desorption fan 12 is fixedly installed on the movable base 14 and connected to the outlet end of the catalytic reaction device 8. The inlet pipe is distributed above the desorption fan 12 and connected to the inlet end of the electrochemical device 7. The regulating valve 11 is installed on the inlet pipe. The first hose 15 and the second hose 16 are located on the same side of the electrochemical device 7 and are connected to the outlet end of the electrochemical device 7 and the inlet end of the catalytic reaction device 8, respectively. The power supply device 9 includes a power source and a transformer. One power source + transformer assembly corresponds to two sets of DBD low-temperature plasma, providing power for dielectric barrier discharge.

[0040] Reference Figure 4 In this embodiment, the electrochemical device 7 includes an electrochemical device housing 71 (material can be FRP, PP, or stainless steel), a DBD plasma generator 76, and a dry filter assembly 75. Both the DBD plasma generator 76 and the dry filter assembly 75 are disposed inside the electrochemical device housing 71. The dry filter assembly 75 is located at the inlet 72, and the DBD plasma generator 76 is located between the dry filter assembly 75 and the outlet 73. An electrochemical device maintenance port 74 is provided on the side of the electrochemical device housing 71. The desorbed gas enters through the inlet 72, passes through the dry filter assembly 75, and then passes through the DBD plasma generator 76. The gas undergoes dielectric barrier discharge, generating high-energy ions that react with background gases such as O2 and N2 to produce highly active free radicals such as ·O, ·OH, and ·N. These highly active substances (strong oxidizing groups) enter the adsorption device 3 through the outlet 73 and the first flexible tube 15. Under the action of a catalyst, the strong oxidizing groups can achieve in-situ regeneration of the carbon fiber.

[0041] Reference Figure 5In this embodiment, the catalytic reaction device 8 includes a catalytic reaction device shell 81 (material can be FRP, PP, or stainless steel) and a catalyst bed 85. The catalytic reaction device shell 81 has a gas inlet 82 and a gas outlet 83 on both sides, and a catalytic device maintenance port 84 on the side of the shell 81 for easy catalyst loading. The catalyst bed 85 is installed inside the catalytic reaction device shell 81, and a catalyst is placed on the catalyst bed 85. During cyclic desorption, the desorbed waste gas passes through the carbon fiber loaded with the catalyst. The unreacted waste gas enters the catalyst bed 85 through the second hose 16 and the gas inlet 82. The catalyst bed 85 is filled with a mixture of room temperature catalyst and ozone decomposition catalyst, with a mass ratio of room temperature catalyst to ozone decomposition catalyst of 1:1 to 1:3. The method for preparing the ozone decomposition catalyst is based on the method described in the invention patent with publication number CN106824218A entitled "A High-Efficiency Moisture-Resistant Ozone Decomposition Catalyst and Its Preparation Method"; the method for preparing the room-temperature catalyst is based on the method described in the invention patent with publication number CN113663729A entitled "A High-Efficiency Carbon Fiber Supported Catalyst and Its Preparation Method" (step one in Example 1).

[0042] Reference Figure 1 In this embodiment, both the desorption unit and the adsorption unit are equipped with a temperature control system 6 to monitor the temperature of the carbon fiber adsorbent 35 and the catalyst bed 85 during the closed-loop desorption process. When the temperature is higher than 85°C, the temperature control system 6 is interlocked with the desorption fan, and the system stops operating.

[0043] Example 2

[0044] This embodiment provides an adsorption regeneration method based on the ACF adsorption-room temperature catalytic regeneration device described in Embodiment 1. The adsorption regeneration method is implemented based on the regeneration device described in Embodiment 1, and specifically includes:

[0045] (I) Adsorption stage: When the laboratory is working normally, the adsorption air valve 1 and the main fan 4 are turned on and the desorption air valve 2 is turned off. The waste gas generated in the laboratory is collected by the collection system and enters the adsorption equipment 3 through the air inlet pipe. It is adsorbed in the adsorbent pores. After the waste gas is adsorbed and purified by carbon fiber adsorbent 35, it is discharged at high altitude through the exhaust stack 5.

[0046] (II) Desorption Stage: When the carbon fiber adsorbent 35 in the adsorption unit is saturated, offline desorption is performed in the laboratory when not in operation. Adsorption air valve 1 and main fan 4 are closed. The integrated electrochemical circulation desorption equipment is moved next to the adsorption equipment. The outlet of the electrochemical equipment 7 and the inlet of the catalytic reaction equipment 8 are connected to the adsorption equipment 3 through the first hose 15 and the second hose 16 (both are metal hoses). Desorption air valve 2 is opened for desorption. In the initial stage of desorption, the opening of the regulating air valve 11 is adjusted to the maximum. The desorption fan 12 and the electrochemical equipment 7 are turned on sequentially. Electrochemical equipment 7, adsorption equipment 3, and catalytic reaction equipment 8 then desorb. The chemical reaction equipment 8 forms a circulation path, and the regulating air valve 11 is gradually closed to achieve closed-loop desorption. During closed-loop desorption, the concentration of waste gas in the circulation is detected by the gas detection equipment to determine whether the carbon fiber adsorbent 35 has been completely regenerated. After the carbon fiber adsorbent 35 has been completely regenerated, the electrochemical equipment 7 is turned off. After the closed-loop reaction continues for a period of time, the adsorption air valve 1 and the main fan 4 at the outlet of the adsorption equipment 3 are turned on, and the gas is discharged from the exhaust pipe 5. Then, the desorption fan 12 and the desorption air valve 2 are gradually turned off to separate the first hose 15 and the second hose 16 from the adsorption equipment 3, and the next equipment is desorbed in a cycle.

[0047] Cyclic desorption principle:

[0048] This scheme employs electrochemical cyclic desorption, utilizing high-energy ions generated by dielectric barrier discharge and strong oxidizing substances such as ozone, including ·OH (redox potential 2.8 eV), ·O (redox potential 2.42 eV), and O3 (redox potential 2.07 eV). Under the action of a catalyst, common VOCs such as ethanol, ethyl acetate, acetone, and xylene can be mineralized and decomposed. The efficiency of electrochemical synergistic catalytic decomposition of VOCs is shown in Table 1. During cyclic desorption, substances such as ·O and O3 are generated by DBD low-temperature plasma and decomposed by the catalyst in a closed-loop cycle, which can completely mineralize and decompose VOCs. After the VOCs are completely decomposed, the electrochemical module is shut down to continue the closed-loop cycle, ensuring the complete decomposition of active substances such as ozone and avoiding the generation of secondary pollutants such as ozone.

[0049] Table 1. Efficiency of electrochemical co-catalytic decomposition of common VOCs

[0050] Serial Number VOCs <![CDATA[Purification efficiency c / %]]> 1 ethanol 90 2 acetone 85 3 Ethyl acetate 82 4 xylene 95 5 Acetic acid 88

[0051] This invention employs a green island operation mode, utilizing offline desorption. Multiple adsorption units can correspond to one desorption unit. The desorption unit adopts a modular design, with electrochemical equipment, catalytic reaction equipment, power supply equipment, and desorption fans connected by bolts to a movable base plate. The adsorption unit undergoes desorption and regeneration every 3 to 6 months based on the inlet gas concentration. During desorption and regeneration, the desorption unit simply needs to be moved next to the adsorption unit and connected to the adsorption unit using a flexible metal hose to achieve offline desorption. Furthermore, this invention employs a circulating desorption mode, significantly reducing the desorption air volume compared to conventional desorption. The desorption unit is smaller, and the bolted connections between units facilitate disassembly and relocation, avoiding the problem of inconvenient movement of large-scale equipment. It also enables a green island regeneration mode for waste gas treatment equipment across different buildings and enterprises.

[0052] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An ACF adsorption-room-temperature catalytic regeneration device, characterized in that, It includes adsorption units and desorption units; The adsorption unit includes an air inlet pipe, an adsorption device (3), an air outlet pipe, a main fan (4), and an exhaust pipe (5) connected in sequence. An adsorption air valve (1) is provided on both the air inlet pipe and the air outlet pipe. The desorption unit includes an electrochemical device (7), a catalytic reaction device (8), and a desorption fan (12); the inlet end of the electrochemical device (7) is connected to an inlet pipe, and an regulating valve (11) is provided on the inlet pipe; the outlet end of the electrochemical device (7) is equipped with a first flexible hose (15); the inlet end of the catalytic reaction device (8) is equipped with a second flexible hose (16), and the outlet end is connected to the inlet end of the electrochemical device (7) through a connecting pipe (17); the inlet of the desorption fan (12) is connected to the outlet end of the catalytic reaction device (8), and the outlet of the desorption fan (12) is connected to the connecting pipe (17); The desorption inlet of the adsorption device (3) is detachably connected to the first hose (15), and a desorption air valve (2) is provided between the desorption inlet of the adsorption device (3) and the first hose (15); the desorption outlet of the adsorption device (3) is detachably connected to the second hose (16), and a desorption air valve (2) is provided between the desorption outlet of the adsorption device (3) and the second hose (16). The electrochemical device (7) includes an electrochemical device housing (71), a DBD plasma generator (76), and a dry filter assembly (75); the DBD plasma generator (76) and the dry filter assembly (75) are both located inside the electrochemical device housing (71), the dry filter assembly (75) is located at the air inlet (72), and the DBD plasma generator (76) is located between the dry filter assembly (75) and the air outlet (73); The catalytic reaction device (8) includes a catalytic reaction device shell (81) and a catalyst bed (85). The catalyst bed (85) is installed inside the catalytic reaction device shell (81). A catalyst is provided on the catalyst bed (85). The catalyst bed (85) is filled with a mixture of room temperature catalyst and ozone decomposition catalyst.

2. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, The adsorption device (3) includes an adsorption device housing (31) and several adsorption filter cartridges (34). The adsorption filter cartridges (34) are vertically arranged inside the adsorption device housing (31). The adsorption filter cartridges (34) are covered with carbon fiber adsorbent (35) to adsorb waste gas. The adsorption equipment housing (31) is provided with an adsorption waste gas inlet (32), an adsorption waste gas outlet (33), a desorption waste gas inlet (36), and a desorption waste gas outlet (37); the adsorption waste gas inlet (32) and the desorption waste gas outlet (37) are located on one side of the adsorption equipment housing (31), with the adsorption waste gas inlet (32) located above the desorption waste gas outlet (37); the desorption waste gas inlet (36) and the adsorption waste gas outlet (33) are located on the other side of the adsorption equipment housing (31), with the desorption waste gas inlet (36) located above the adsorption waste gas outlet (33).

3. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, The electrochemical device (7), catalytic reaction device (8), desorption fan (12), air inlet pipe, regulating valve (11), first hose (15) and second hose (16) are integrated into one unit to form an integrated desorption device; The desorption integrated device also includes a mobile base (14) and a power supply device (9). The electrochemical equipment (7), catalytic reaction equipment (8), power supply equipment (9), desorption fan (12), air inlet pipe, regulating air valve (11), first hose (15) and second hose (16) are all installed above the mobile base (14); Several rollers are installed under the movable base (14).

4. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, An electrochemical equipment inspection port (74) is provided on the side of the housing (71) of the electrochemical equipment.

5. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, The catalytic reaction equipment housing (81) is provided with a gas inlet (82) and a gas outlet (83) on both sides, and a catalytic equipment maintenance port (84) is provided on the side of the catalytic reaction equipment housing (81).

6. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, Both the desorption unit and the adsorption unit are equipped with a temperature control system (6) to monitor the temperature inside the adsorption equipment (3) and the catalytic reaction equipment (8) during the closed-loop desorption process. When the temperature is higher than 85°C, the temperature control system (6) is interlocked with the desorption fan, and the system stops running.

7. The ACF adsorption-room temperature catalytic regeneration device according to claim 1, characterized in that, The desorption unit is also provided with a three-way connector, which is connected to the inlet pipe, the outlet of the electrochemical device (7), and the connecting pipe (17) respectively.

8. The ACF adsorption-room-temperature catalytic regeneration method based on the ACF adsorption-room-temperature catalytic regeneration device according to any one of claims 1 to 7, characterized in that, include: S1, Adsorption stage: Open the adsorption air valve (1) and the main fan (4), close the desorption air valve (2), and the waste gas generated in the laboratory enters the adsorption equipment (3) through the air inlet pipe. After the waste gas is adsorbed and purified by the carbon fiber adsorbent (35), it is discharged at high altitude through the exhaust pipe (5). S2, Desorption stage: After the carbon fiber adsorbent (35) is saturated, the first hose (15) and the second hose (16) are connected to the inlet and outlet of the adsorption device (3) respectively. The adsorption valve (1) and the main fan (4) are closed, and the desorption valve (2) is opened. The opening of the regulating valve (11) is adjusted to the maximum, and the desorption fan (12) and the electrochemical device (7) are turned on in sequence. The electrochemical device (7), the adsorption device (3), and the catalytic reaction device (8) form a circulation path. The regulating valve (11) is gradually closed to achieve closed-loop desorption. After the carbon fiber adsorbent (35) is completely regenerated, the electrochemical device (7) is turned off. After the closed-loop reaction continues for a period of time, the adsorption valve (1) and the main fan (4) at the outlet of the adsorption device (3) are turned on. The gas is discharged from the exhaust pipe (5). Then the desorption fan (12) and the desorption valve (2) are gradually turned off. The first hose (15) and the second hose (16) are separated from the adsorption device (3) and the next device is desorbed in a cycle.

9. The ACF adsorption-room temperature catalytic regeneration method according to claim 8, characterized in that, During closed-loop desorption, the concentration of circulating gas is detected by a gas detection device to determine whether the carbon fiber adsorbent (35) has been completely regenerated.

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