Adsorption-enrichment-catalysis coupling VOCs purification device based on zeolite rotating wheel

Abstract

The utility model discloses an adsorption-enrichment-catalysis coupling VOCs (volatile organic compounds) purification device based on a zeolite runner, the device comprises a gas inlet module, a discharge module, a filter module, a blast module and a zeolite runner module, the zeolite runner module comprises the zeolite runner which is rotatably mounted, a bimetallic cluster catalyst is arranged on the zeolite runner, and the zeolite runner is provided with an air inlet and an air outlet. A desorption purification area, a cooling regeneration area and an adsorption purification area except the desorption purification area and the cooling regeneration area which are opposite to the two passages of the V-shaped pipeline opening are formed in the zeolite rotating wheel during rotation, and a heat exchange chamber is arranged on the other side, opposite to the V-shaped pipeline opening, of the zeolite rotating wheel. The VOCs adsorption-enrichment-catalysis coupling integrated VOCs purification device provided by the utility model is green, environment-friendly, high in treatment efficiency, wide in application and low in energy consumption, can simultaneously realize efficient removal of VOCs under the working condition of low-concentration and large-air-volume VOCs waste gas, and reduces the process energy consumption, the occupied area and the investment and operation cost of purification equipment.

Description

Technical Field

[0001] The utility model relates to the field of organic waste gas treatment, and in particular to an adsorption-enrichment-catalysis coupled VOCs purification device based on a zeolite rotor. Background Art

[0002] Volatile organic compounds (VOCs) are the main control of air pollution, which has serious harm to the ecological environment and human health. The harm of VOCs gas to the environment is mainly reflected in the damage to air visibility, ozone layer, and climate. Not only will it cause haze weather phenomena and reduce atmospheric visibility, VOCs will also undergo chemical reactions in the atmospheric environment to generate nitric acid and sulfuric acid, causing precipitation acidification and acid rain, which will seriously affect the ecological environment.

[0003] At present, the treatment of industrial source VOCs still relies on two sets of equipment: adsorption enrichment and combustion degradation. The overall structure is large and the operation is complicated. In addition, there are activated carbon adsorption, photocatalytic oxidation and low-temperature plasma methods, which inevitably have defects such as low efficiency, high energy consumption and secondary pollution, making it difficult to achieve energy conservation and emission reduction in a practical sense. Summary of the invention

[0004] In order to overcome the above shortcomings, the utility model provides an adsorption-enrichment-catalytic coupling VOCs purification device based on a zeolite rotor. The utility model application can not only achieve high treatment efficiency, low energy consumption, and high-efficiency purification of volatile organic compounds, but also can utilize the purified gas, improve gas utilization and device simplicity, and conform to the new green development concept.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Adsorption-enrichment-catalytic coupling VOCs purification device based on zeolite rotor, including

[0007] Air intake module, including air grille;

[0008] The filter module comprises a filter chamber, the front end of which is connected to the air grid and the rear end is connected to the air blowing module, wherein a plurality of filter assemblies are arranged in parallel, and each of the filter assemblies is provided with a sliding assembly;

[0009] The air blowing module comprises an air blowing assembly and a rectangular air outlet and a V-shaped pipe opening connected to the zeolite rotor module, wherein the V-shaped pipe opening has two left and right passages, one of which is a one-way passage, and a discharge port I is provided at the top of the one-way passage;

[0010] A zeolite rotor module comprises a rotatably mounted zeolite rotor, wherein the zeolite rotor is provided with a multi-stage porous molecular sieve and a zeolite-encapsulated bimetallic Rh-Mn cluster catalyst encapsulated therein, wherein during rotation, the zeolite rotor forms a desorption purification zone opposite to the one-way passage of the V-shaped pipe port, a cooling regeneration zone opposite to the other passage of the V-shaped pipe port, and an adsorption purification zone other than the desorption purification zone and the cooling regeneration zone; the zeolite rotor is provided with a heat exchange chamber on the other side opposite to the V-shaped pipe port, wherein the heat exchange chamber comprises a connected heat exchange chamber and a circulation chamber, which are respectively opposite to and connected to the one-way passage and the other passage of the V-shaped pipe port;

[0011] The discharge module comprises a discharge port II which is opposite to the adsorption purification zone of the zeolite wheel and is located at the tail end of the device.

[0012] As an improvement of the above solution, the air grid and the filter chamber are connected via an air grid connection frame.

[0013] As an improvement of the above solution, a hinge door and a sealing frame are provided at the front end of the filter chamber.

[0014] As an improvement of the above solution, the sliding assembly includes a slide rail installed at the bottom of the filter assembly and a slide rail roller matched therewith, and a sliding baffle is installed on the top of the filter assembly.

[0015] As an improvement of the above solution, the left passage of the V-shaped pipe opening is a one-way passage, and the front end of the one-way passage is sealed;

[0016] During the clockwise rotation, the 30-degree area of ​​the zeolite wheel opposite to the left passage of the V-shaped pipe mouth is the desorption purification zone, the 30-degree area opposite to the right passage is the cooling regeneration zone, and the 300-degree area excluding the desorption purification zone and the cooling regeneration zone is the adsorption purification zone.

[0017] As an improvement of the above solution, brackets are provided on both sides of the zeolite rotor, and rotating bearings and triangular fixing frames are installed on the brackets.

[0018] As an improvement of the above solution, the zeolite wheel is rotated by a stepping motor and a belt, and a wheel surface of the zeolite wheel is provided with a concave mark matching with the belt.

[0019] As an improvement of the above solution, the rotation speed of the zeolite wheel is 1 to 6 r / h.

[0020] As an improvement of the above solution, the blowing assembly blows most of the gas to the adsorption purification area through the rectangular air outlet by blowing, and blows a small part of the gas to the cooling regeneration area through the V-shaped pipe opening.

[0021] As an improvement of the above solution, the ratio of the majority gas to the minority gas is 6:1.

[0022] As an improvement of the above scheme, when most of the gas passes through the zeolite wheel molecular sieve and catalyst area in the adsorption purification zone, the VOCs particles are adsorbed and purified, and discharged through the discharge port II;

[0023] When the small portion of gas reaches the cooling and regeneration zone through the V-shaped pipe opening, the zeolite rotor molecular sieve and the catalyst that has undergone catalytic reaction are cooled by the small portion of gas, so that they can restore a better adsorption effect; this small portion of purified gas enters the heat exchange chamber through the circulation chamber, and reaches the desorption and purification zone after being heated, and is discharged through the discharge port I along with the products of the VOCs particles adsorbed on the zeolite rotor that are desorbed and purified due to the catalytic oxidation reaction in this area.

[0024] As an improvement of the above solution, the heat exchange chamber and the circulation chamber are separated by a solid partition, and the solid partition is provided with gas circulation holes.

[0025] As an improvement of the above solution, a desorption fan is installed in the heat exchange chamber.

[0026] As an improvement of the above solution, the desorption fan is a hot air fan, which makes the temperature of the desorption purification zone within a controllable range of 160 to 200° C., at which time the catalytic conversion rate of VOCs particles reaches more than 90%.

[0027] As an improvement of the above solution, the purification device further includes an electric control module;

[0028] The electric control module includes an electric control room, in which an electric control box and electric control elements, a display screen and a controller connected to the electric control box are arranged;

[0029] The electric control box is also communicatively connected to a plurality of air pressure sensors, VOCs concentration detection sensors, and temperature and humidity sensors distributed before and after the filter assembly, before and after the zeolite wheel, and before and after the blower assembly.

[0030] The method of the adsorption-enrichment-catalytic coupling VOCs purification device based on the zeolite rotor is:

[0031] VOCs gas enters the device through the air grid, and after being filtered by the multi-stage filter assembly to remove most of the solid particles and other impurities, most of the VOCs gas is blown to the adsorption purification area through the rectangular air outlet by the blowing action of the air blowing assembly, and a small part of the VOCs gas is blown to the cooling regeneration area through the V-shaped pipe opening;

[0032] When the VOCs gas reaches the adsorption purification zone, the VOCs particles are adsorbed by the zeolite rotor multi-level pore molecular sieve and the zeolite encapsulated bimetallic cluster catalyst and remain in the zeolite rotor. This part of the gas is purified and discharged through the discharge port II.

[0033] When the zeolite wheel rotates to transfer the area adsorbed with VOCs particles to the desorption purification area, the catalytic reaction conditions are met under the action of the hot air from the desorption fan, and the VOCs particles are oxidized and desorbed through the catalytic reaction. The products of the catalytic reaction in this area are discharged through the discharge port I.

[0034] When the zeolite wheel rotates to transfer this area to the cooling and regeneration area, the multi-level pore molecular sieve of the zeolite wheel and the catalyst in which the catalytic reaction has occurred are cooled by a small portion of the VOCs gas from the V-shaped pipe mouth, thereby realizing a cyclic conversion from the reaction state to the adsorption state. The zeolite wheel rotates to transfer this area back to the adsorption purification area, thereby completing a purification process; this small portion of VOCs gas is adsorbed and purified at the same time, enters the heat exchange chamber through the circulation chamber, and reaches the desorption purification area after heating, providing a high-temperature reaction atmosphere for the catalytic reaction, and is finally discharged through the discharge port I.

[0035] Beneficial effects brought by the utility model:

[0036] This utility model is based on and improves the technology of VOCs treatment by zeolite rotary combustion method, and proposes a green, environmentally friendly, highly efficient, widely applicable, and low-energy VOCs adsorption-enrichment-catalytic coupling integrated VOCs purification device. As an effective pollution reduction and carbon reduction and synergistic efficiency enhancement technology, it plays an important role in achieving energy conservation, emission reduction and dual carbon strategies.

[0037] Compared with the existing mainstream VOCs treatment solutions, this utility model has the following advantages:

[0038] 1. Eliminating the subsequent complicated combustion device, the zeolite wheel encapsulated catalyst is used for purification. The utility model combines zeolite molecular sieve with a catalyst with excellent catalytic performance to achieve room temperature adsorption and high temperature catalytic oxidation integrated treatment, without the need for desorption and connection with other devices, making the device more streamlined, lower cost, and more operationally feasible. VOCs can be efficiently degraded into CO2 and H2O for direct discharge, and the process energy consumption, floor space, and investment and operating costs of purification equipment are reduced.

[0039] 2. It solves the problems of high energy consumption and low efficiency caused by the combustion catalysis of the original purification device. The purified gas can be utilized to improve the gas utilization rate and the simplicity of the device. It not only conforms to the new green development concept, but also the new device has strong applicability and can be promoted to different industries and used for the adsorption / degradation of different pollutants.

[0040] 3. The dry multi-stage filter is combined with the side hinge door design, equipped with slide rollers and slide rails, which can realize the convenient replacement of damaged filter material layers; the device has built-in multiple temperature and humidity, VOCs concentration detection, air pressure sensors and ATF panels, etc., which can monitor and feedback the operating status of the device in real time and realize online adjustment of the zeolite wheel speed.

[0041] 4. Especially suitable for low concentration (300mg / Nm 3 Below), large air volume (more than 10000Nm 3 / h), purification and treatment of non-methane VOCs waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] Figure 1 It is a schematic diagram of the structure of the purification device of the utility model;

[0044] Figure 2 This is a schematic diagram of the airflow channel structure of the utility model;

[0045] Figure 3 It is a schematic diagram of the airflow direction and purification process of the purification method of the utility model.

[0046] Numbers in the figure:

[0047] 1. Air grid; 2. Filter plate; 3. Blower; 4. V-shaped pipe opening; 40. Discharge port I; 41. Left passage; 42. Right passage; 5. Rotating bearing; 6. Zeolite wheel; 61. Desorption purification zone; 62. Cooling regeneration zone; 63. Adsorption purification zone; 7. Desorption fan; 8. Heat exchange chamber; 9. Discharge port II; 10. Electric control room; 11. Electric control box; 12. Stepper motor; 13. Belt; 14. Rectangular air outlet; 15. Hinge door and handle; 16. Slide rail roller; 17. Slide rail; 18. Air grid connection frame. DETAILED DESCRIPTION

[0048] The following will be combined with the embodiments of the utility model and the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] Example 1

[0050] Reference Figures 1-2, an adsorption-enrichment-catalysis coupled VOCs purification device based on a zeolite rotor, comprising an air intake module arranged from left to right, including an air grid 1, wherein the air grid 1 is connected to the filter chamber via an air grid connection frame 18;

[0051] A filter module comprises a filter chamber, wherein the front end of the filter chamber is connected to an air grid 1 and the rear end is connected to an air blowing module, wherein three filter plates 2 are arranged in parallel to form a three-stage filter, which is used to filter and remove most of the solid particles and other impurities after air intake, and each of the filter plates 2 is provided with a sliding assembly, and the sliding assembly comprises a slide rail 17 installed at the bottom of the filter plate 2 and a slide rail roller 16 matched therewith, which is convenient for maintenance and replacement and can prevent the filter plate 2 from dragging on the bottom when it is taken out, and a sliding baffle is installed on the top of the filter plate 2, and the width of the sliding baffle is slightly larger than the thickness of the filter plate 2, so that the filter plate 2 will not tip to both sides during the removal process, and a hinge door and a handle 15 and a sealing frame are provided at the front end of the filter chamber;

[0052] The blower module includes a blower 3 and a rectangular air outlet 14 and a V-shaped pipe port 4 connected to the zeolite rotor module. The blower 3 is provided with a raised block at the bottom to carry the blower. The V-shaped pipe port 4 has two left and right passages, and the left passage 41 is a one-way passage. The top of the V-shaped pipe port 4 is provided with a discharge port 140, which is mainly used for the discharge of desorbed purified air.

[0053] The zeolite rotor module includes a rotatably mounted zeolite rotor 6, on which a multi-level porous molecular sieve and a zeolite-encapsulated bimetallic Rh-Mn cluster catalyst are arranged. This catalyst has the characteristics of highly efficient adsorption of VOCs impurities. When the temperature is raised to a specific temperature, a catalytic reaction can be achieved to achieve desorption purification. During the clockwise rotation process, the zeolite rotor 6 sequentially forms a 30-degree sector area opposite to the left passage 41 of the V-shaped pipe mouth 4 - a desorption purification zone 61, a 30-degree sector area opposite to the right passage 42 of the V-shaped pipe mouth 4 - a cooling regeneration zone 62, and a 300-degree sheep's hoof-shaped area other than the desorption purification zone 61 and the cooling regeneration zone 62 - an adsorption purification zone 63. The functions of each area are different, and they do not change with the rotation of the zeolite rotor 6, and always correspond to several air outlets. The zeolite wheel 6 is provided with a heat exchange chamber 8 on the other side opposite to the V-shaped pipe opening 4. The heat exchange chamber 8 includes a heat exchange cavity and a circulation cavity which are connected to each other. The heat exchange cavity and the circulation cavity are respectively opposite to and connected to the left and right passages of the V-shaped pipe opening 4.

[0054] And a discharge module, including a discharge port II9 opposite to the adsorption purification zone 63 of the zeolite rotor 6 and located at the tail end of the device.

[0055] In this embodiment, brackets are provided on both sides of the zeolite wheel 6, and rotating bearings 5 ​​and triangular fixing brackets are symmetrically installed on the brackets on both sides. Optionally, the zeolite wheel 6 is rotated by a stepper motor 12 and a belt 13, and a dent matching the belt 13 is provided on the wheel surface of the zeolite wheel 6, and the speed of the zeolite wheel 6 is controlled by the stepper motor 12 to be adjustable in the range of 1 to 6 r / h.

[0056] Reference Figure 3 During operation, most of the VOCs gas filtered by the three-stage filter is blown by the blower 3 through the lower rectangular air outlet 14 to the adsorption purification area 63 opposite thereto, and a small part of the gas is blown to the cooling regeneration area 62 through the right passage 42 of the upper V-shaped pipe port 4. Optionally, the ratio of the majority of the gas to the minority of the gas is 6:1.

[0057] Among them, when most of the VOCs gas passes through the adsorption purification zone 63, the VOCs particles are adsorbed and purified by the multi-level pore confined molecular sieve and the adsorption / activation dual-functional catalyst, and are directly discharged through the discharge port II9 at the tail end of the device;

[0058] When a small portion of VOCs gas reaches the cooling regeneration zone 62 through the V-shaped pipe port 4, the molecular sieve on the zeolite rotor 6 and the catalyst that has undergone catalytic reaction are cooled by the small portion of gas, and the temperature is reduced so that they can restore a better adsorption effect while adsorbing; this small portion of purified gas then enters the heat exchange chamber through the circulation chamber, and reaches the desorption purification zone 61 after being heated up by the desorption fan 7, and is discharged through the discharge port I40 together with the products of the VOCs particles adsorbed on the zeolite rotor 6 that are desorbed and purified due to the catalytic oxidation reaction in this area.

[0059] The purification device of this embodiment uses the structural design of the blower module, zeolite rotor 6 and heat exchange chamber 8 to cleverly use the low-temperature diverted gas to cool the catalyst and activate the adsorption activity, while also using this part of the airflow to provide a high-temperature reaction atmosphere for the catalytic reaction. In conjunction with the rotation of the zeolite rotor 6 and the circulation of the functional areas formed, efficient adsorption enrichment and catalytic purification of VOCs gases can be achieved.

[0060] In this embodiment, the heat exchange chamber 8 is a rectangular parallelepiped and the main body is shelled. The heat exchange chamber and the circulation chamber are separated by a solid partition, and the solid partition is provided with a gas flow hole. The desorption fan 7 located in the heat exchange chamber 8 is a hot air blower, which is used to circulate and heat a small part of the purified gas and blow it back to the zeolite wheel 6 for desorption purification.

[0061] In a preferred embodiment, the purification device further includes an electric control module, which is located below the heat exchange chamber 8 and at the front end of the discharge module. The electric control module includes an electric control room 10, which is located at the rear of the device near the outside to facilitate debugging by the staff. The electric control room 10 is provided with an electric control box 11 and electric control elements, ATF070 touch screen and controller connected thereto for communication. At the same time, the electric control box 11 is also connected to multiple air pressure sensors, VOCs concentration detection sensors, temperature and humidity sensors, etc. distributed before and after the filter, before and after the zeolite wheel 6, and before and after the blower 3 for communication, so as to realize real-time monitoring and intelligent control of the device, such as:

[0062] The air pressure sensor is used to detect the change in the air pressure difference before and after the multi-stage filter. For example, when a brand new filter just starts to work, the air pressure difference before and after the multi-stage filter is △p1 based on the air pressure sensor. After a period of work, the air pressure difference before and after the multi-stage filter is △p2 based on the air pressure sensor. When the device monitors that the change value of the two △p=△p2-△p1 reaches a certain limit, it means that the multi-stage filter has reached a saturated state and can be replaced.

[0063] The VOCs concentration detection sensor is installed before and after the zeolite rotor 6 to detect whether the VOCs concentration C1 before purification and the VOCs concentration C2 after purification are suitable for emission. It can also be used for early debugging of equipment, based on which the packaging amount of the catalyst on the zeolite rotor 6 will be determined.

[0064] In this embodiment, in order to improve the durability and service life of the device, the power connection lines used by the blower 3, the desorption fan 7, the stepper motor 12, etc. are all wrapped with materials that prevent organic waste gas corrosion.

[0065] Regarding the boundary problem of the purification area of ​​the purification device of this embodiment. In this purification device, considering the flow characteristics of the gas and the efficient adsorption characteristics of the zeolite rotor 6, no clear physical boundary structure is set between the purification areas. This is because, firstly, the zeolite rotor 6 and the adjacent structures can be as close as possible under the actual processing accuracy, so that the concept of the gap between each purification area and the adjacent structure (for example, the slit between the zeolite rotor 6 and the V-shaped pipe opening / vent on both sides) is weakened, so that the amount of organic waste gas that can circulate between each other is extremely small and can be ignored; secondly, once the organic particles in the VOCs gas enter the surface area of ​​the zeolite rotor 6, they will be efficiently adsorbed by the multi-level pore molecular sieve and the catalyst, so the gas flow around the zeolite rotor 6 does not seem to be so concerning.

[0066] Example 2

[0067] Adsorption-enrichment-catalytic coupling VOCs purification method based on zeolite rotor, including

[0068] VOCs gas enters the device through the air grid 1, and after being filtered by a multi-stage filter to remove most of the solid particles and other impurities, most of the VOCs gas is blown to the adsorption purification area 63 through the rectangular air outlet 14 by the blowing action of the blower 3, and a small part of the VOCs gas is blown to the cooling regeneration area 62 through the V-shaped pipe port 4;

[0069] When the VOCs gas reaches the adsorption purification zone 63, the VOCs particles are adsorbed by the zeolite rotor 6 molecular sieve and the zeolite encapsulated bimetallic cluster catalyst and remain in the zeolite rotor 6, and this part of the gas is purified and discharged through the discharge port II9;

[0070] When the zeolite wheel 6 rotates to transfer the area with adsorbed VOCs particles to the desorption purification area 61, the catalytic reaction conditions are met under the action of the hot air of the desorption blower 7, and the VOCs particles are oxidized and desorbed through the catalytic reaction, and the products of the catalytic reaction in this area are discharged through the discharge port I40;

[0071] When the zeolite rotor 6 rotates to transfer this part of the area to the cooling regeneration zone 62, the multi-level pore molecular sieve of the zeolite rotor 6 and the catalyst in which the catalytic reaction has occurred are cooled by a small part of the VOCs gas from the V-shaped pipe port 4, thereby realizing a cyclic conversion from a reaction state to an adsorption state. The zeolite rotor 6 rotates to transfer this part of the area back to the adsorption purification zone 63, thereby completing a purification process; this small part of the VOCs gas is adsorbed and purified at the same time, enters the heat exchange chamber through the circulation chamber, and reaches the desorption purification zone 61 after heating, providing a high-temperature reaction atmosphere for the catalytic reaction, and is then discharged through the discharge port I40.

[0072] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Adsorption-enrichment-catalytic coupling VOCs purification device based on zeolite rotor, characterized by: include Air intake module, including air grille; The filter module comprises a filter chamber, the front end of which is connected to the air intake module and the rear end of which is connected to the air blowing module, wherein a plurality of filter components are arranged in parallel; The air blowing module comprises an air blowing assembly and a rectangular air outlet and a V-shaped pipe opening connected to the zeolite rotor module, wherein the V-shaped pipe opening has two left and right passages, one of which is a one-way passage, and a discharge port I is provided at the top of the one-way passage; A zeolite rotor module comprises a rotatably mounted zeolite rotor, wherein the zeolite rotor is provided with a multi-stage porous molecular sieve and a bimetallic cluster catalyst encapsulated therein, wherein during rotation, the zeolite rotor forms a desorption purification zone opposite to the one-way passage of the V-shaped pipe port, a cooling regeneration zone opposite to the other passage of the V-shaped pipe port, and an adsorption purification zone other than the desorption purification zone and the cooling regeneration zone; the zeolite rotor is provided with a heat exchange chamber on the other side opposite to the V-shaped pipe port, wherein the heat exchange chamber comprises a connected heat exchange chamber and a circulation chamber, which are respectively opposite to and connected to the one-way passage and the other passage of the V-shaped pipe port; The discharge module comprises a discharge port II located at the rear end of the device.

2. The purification device according to claim 1, characterized in that: Each of the filter components is equipped with a sliding component, which includes a slide rail installed at the bottom of the filter component and a slide rail roller matched therewith, and a sliding baffle is installed on the top of the filter component.

3. The purification device according to claim 1, characterized in that: The left passage of the V-shaped pipe opening is a one-way passage, and the front end of the one-way passage is sealed; During the clockwise rotation, the 30-degree area of ​​the zeolite wheel opposite to the left passage of the V-shaped pipe mouth is the desorption purification zone, the 30-degree area opposite to the right passage is the cooling regeneration zone, and the 300-degree area excluding the desorption purification zone and the cooling regeneration zone is the adsorption purification zone.

4. The purification device according to claim 1, characterized in that: Brackets are arranged on both sides of the zeolite rotor, and rotating bearings and triangular fixing frames are installed on the brackets.

5. The purification device according to claim 1, characterized in that: The rotation speed of the zeolite wheel is 1-6 r / h.

6. The purification device according to claim 1, characterized in that: The zeolite rotating wheel is rotated by a stepping motor and a belt, and a wheel surface of the zeolite rotating wheel is provided with a concave mark matched with the belt.

7. The purification device according to claim 1, characterized in that: The air blowing assembly blows most of the gas to the adsorption purification area through the rectangular air outlet by blowing action, and a small part of the gas is blown to the cooling regeneration area through the V-shaped pipe opening; The ratio of the majority gas to the minority gas is 5 to 10:

1.

8. The purification device according to claim 1, characterized in that: The heat exchange chamber and the circulation chamber are separated by a solid partition plate, and a gas circulation hole is opened on the solid partition plate.

9. The purification device according to claim 1, characterized in that: A desorption fan is installed in the heat exchange cavity, which makes the temperature of the desorption purification zone within a controllable range of 160-200°C.

10. The purification device according to claim 1, characterized in that: The purification device also includes an electronic control module; The electric control module includes an electric control room, in which an electric control box and electric control elements, a display screen and a controller connected to the electric control box are arranged; The electric control box is also communicatively connected to a plurality of air pressure sensors, VOCs concentration detection sensors, and temperature and humidity sensors distributed before and after the filter assembly, before and after the zeolite wheel, and before and after the blower assembly.

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