A VOC treatment wheel system and a VOC treatment method

Abstract

The present invention discloses a VOC treatment wheel system and a VOC treatment method, the system comprising: a wheel having a first adsorption zone and a second adsorption zone which are arranged in sequence along its own circumference and are independent of each other; an air inlet pipe which is connected with the inlet of the first adsorption zone; an air outlet pipe which comprises an air outlet main pipe, an air outlet branch pipe and a first clean air outlet pipe, the inlet of the air outlet main pipe is connected with the outlet of the first adsorption zone, the outlet of the air outlet main pipe is respectively connected with the inlet of the air outlet branch pipe and the inlet of the first clean air outlet pipe; the outlet of the air outlet branch pipe is connected with the inlet of the second adsorption zone; the second clean air outlet pipe is connected with the outlet of the second adsorption zone; a treatment method: the waste gas containing VOC is allowed to enter the first adsorption zone through the air inlet pipe, and after adsorption, enter the air outlet main pipe, and then enter the second adsorption zone through the air outlet branch pipe or be discharged through the first clean air outlet pipe; the system can achieve effective and multi-level removal of VOC through a wheel, with high treatment efficiency and simpler treatment process.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas treatment, and in particular relates to the treatment of volatile organic compounds (VOCs for short), and specifically relates to a VOC treatment wheel system and a VOC treatment method. Background Art

[0002] Volatile organic compounds (VOCs) are widely derived from the fields of petrochemicals, pharmaceuticals, printing, coatings, decoration, and transportation. VOCs are generally toxic and harmful to the environment. When the concentration of VOCs reaches a certain level, it will irritate the human respiratory tract, seriously affecting people's lives. At present, adsorption wheels are used to adsorb VOCs to purify the air. In order to meet the processing requirements and ensure that the VOC content in the purified gas reaches the preset value, two wheels are often required to process the gas multiple times, and the processing process is complicated. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a novel VOC treatment wheel system, which can achieve effective and multi-level removal of VOCs through a wheel, has high treatment efficiency and simpler treatment process.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A VOC treatment wheel system, the VOC treatment wheel system comprising:

[0006] A rotating wheel, wherein the rotating wheel has a first adsorption area and a second adsorption area which are sequentially arranged along its own circumference and are independent of each other;

[0007] an air inlet duct, connected to the inlet of the first adsorption zone;

[0008] An air outlet pipeline comprises an air outlet main pipe, an air outlet branch pipe and a first clean air outlet pipe, wherein the inlet of the air outlet main pipe is connected to the outlet of the first adsorption zone, and the outlet of the air outlet main pipe is respectively connected to the inlet of the air outlet branch pipe and the inlet of the first clean air outlet pipe; the outlet of the air outlet branch pipe is connected to the inlet of the second adsorption zone;

[0009] The second clean gas outlet pipe is connected to the outlet of the second adsorption zone.

[0010] According to some preferred aspects of the present invention, the VOC treatment wheel system further comprises a VOC content detection device for detecting the VOC content in the gas flowing through the gas outlet main pipe, and the VOC content detection device is arranged on the gas outlet main pipe.

[0011] According to some preferred aspects of the present invention, the rotor also includes a first desorption zone arranged along its own circumference and in sequence with the second adsorption zone, and a second desorption zone located between the first desorption zone and the first adsorption zone, and the first desorption zone and the second desorption zone are arranged independently of each other.

[0012] According to some preferred aspects of the present invention, the VOC treatment wheel system further comprises a heater for heating the regeneration gas, and an outlet of the heater is respectively connected to an inlet of the first desorption zone and an inlet of the second desorption zone.

[0013] According to some preferred aspects of the present invention, the VOC treatment wheel system further comprises:

[0014] a first circulation pipeline, wherein an inlet of the first circulation pipeline is connected to an outlet of the second desorption zone, and an outlet of the first circulation pipeline is connected to the air intake pipeline;

[0015] a first concentrating pipeline, wherein an inlet of the first concentrating pipeline is connected to an outlet of the first desorption zone;

[0016] a second concentrating pipeline, wherein the outlet of the first concentrating pipeline is connected to the second concentrating pipeline; and the inlet of the second concentrating pipeline is connected to another outlet of the second desorption zone;

[0017] Catalytic combustion mechanism, the outlet of the second concentration pipe is communicated with the inlet of the catalytic combustion mechanism.

[0018] According to some preferred aspects of the present invention, the VOC treatment wheel system further comprises:

[0019] A second circulation pipe, wherein the inlet of the second circulation pipe is connected to the outlet of the catalytic combustion mechanism, and the outlet of the second circulation pipe is connected to the inlet of the heater.

[0020] According to some preferred aspects of the present invention, the VOC treatment wheel system further comprises:

[0021] The housing comprises a chamber and end covers at both ends of the chamber, the rotating wheel is rotatably arranged on the housing and is partially or completely located in the chamber, one of the end covers comprises a first inlet aligned with the inlet of the first adsorption zone, and a first outlet aligned with the outlet of the second adsorption zone; the other end cover comprises a second outlet aligned with the outlet of the first adsorption zone, and a second inlet aligned with the inlet of the second adsorption zone.

[0022] According to some preferred aspects of the present invention, the second desorption zone has two outlets; one of the end covers also has a third outlet aligned with the outlet of the first desorption zone, and a fourth outlet and a fifth outlet respectively aligned with the two outlets of the second desorption zone; the other end cover also has a third inlet aligned with the inlet of the first desorption zone and a fourth inlet aligned with the inlet of the second desorption zone.

[0023] Another technical solution provided by the present invention is: a VOC treatment method, which is carried out using the VOC treatment wheel system described above, and the treatment method includes: allowing the VOC-containing waste gas to enter the first adsorption zone through an air intake pipe, and after being adsorbed in the first adsorption zone, enter the main gas outlet pipe, and then enter the second adsorption zone through the outlet branch pipe or be discharged from the first clean gas outlet pipe; wherein, a VOC content detection device is used to detect the VOC content in the gas entering the main gas outlet pipe, and if the VOC content is less than or equal to a preset value, the main gas outlet pipe is connected to the first clean gas outlet pipe, and the gas after adsorption treatment is discharged from the first clean gas outlet pipe; if the VOC content is greater than the preset value, the main gas outlet pipe is connected to the outlet branch pipe, and after adsorption in the second adsorption zone, the gas after adsorption treatment is discharged from the second clean gas outlet pipe.

[0024] According to some preferred aspects of the present invention, the processing method further comprises:

[0025] Rotating the rotating wheel to transform the first adsorption zone into the first desorption zone, and the second adsorption zone into the second desorption zone;

[0026] Heating the regeneration gas flowing through the first desorption zone and the second desorption zone by a heater to perform desorption regeneration on the first desorption zone and the second desorption zone;

[0027] Part of the gas flow passing through the second desorption zone passes through the first circulation pipeline and is connected to the air inlet pipeline to circulate into the first adsorption zone again;

[0028] Another part of the gas flow passing through the second desorption zone enters the second concentration pipeline;

[0029] The gas flow passing through the first desorption zone enters the second concentration pipeline through the first concentration pipeline;

[0030] The airflow in the second concentration pipeline is connected to the catalytic combustion mechanism;

[0031] The catalytic combustion mechanism catalytically burns the airflow.

[0032] In the present invention, "independent of each other" means that they can work independently without interfering with each other, but they can be connected to each other and can work in coordination, for example, to process VOC-containing waste gas in sequence.

[0033] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0034] The present invention is based on the problem in the prior art that in order to ensure that the VOC content in the purified gas reaches a preset value, two rotors are often required to process the gas multiple times, resulting in a complicated processing process. The present invention innovatively provides a new type of VOC processing rotor system, which divides the area on a rotor and specifically divides it into two adsorption zones. If the VOC content in the gas after passing through the first adsorption zone still exceeds the preset value, it can be further adsorbed and removed through the second adsorption zone. The demand can be met without two rotors. The adsorption process is completed in one rotor, and two circumferentially arranged desorption zones can be added at the same time, which can realize effective switching of desorption and adsorption of the rotor, avoid operations such as disassembly and replacement, improve the VOC processing capacity of the entire system, and simplify the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 This is a schematic diagram of the structure of a VOC treatment wheel system according to an embodiment of the present invention;

[0037] Figure 2 It is a schematic diagram of the arrangement of the first adsorption zone, the second adsorption zone, the first desorption zone and the second desorption zone along the circumference of the rotating wheel in an embodiment of the present invention;

[0038] Wherein, A, first adsorption zone; B, second adsorption zone; C, first desorption zone; D, second desorption zone; E, catalytic combustion mechanism; F, heater;

[0039] 10. Rotor; 20. Air inlet pipe; 30. Air outlet pipe; 31. Air outlet main pipe; 32. Air outlet branch pipe; 33. First clean air outlet pipe; 40. VOC content detection device; 50. Second clean air outlet pipe; 60. First circulation pipe; 70. First concentration pipe; 80. Second concentration pipe; 90. Second circulation pipe. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0041] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0045] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] like Figure 1 to Figure 2 As shown, this example provides a VOC treatment wheel system, which includes: a wheel 10, an air inlet pipe 20, an air outlet pipe 30 and a second clean air outlet pipe 50.

[0047] Specifically, the wheel 10 has a first adsorption zone A and a second adsorption zone B which are arranged in sequence along its own circumference and are independent of each other; the air inlet pipe 20 is connected to the inlet of the first adsorption zone A; the air outlet pipe 30 includes an outlet main pipe 31, an outlet branch pipe 32 and a first clean air outlet pipe 33, the inlet of the outlet main pipe 31 is connected to the outlet of the first adsorption zone A, and the outlet of the outlet main pipe 31 is respectively connected to the inlet of the outlet branch pipe 32 and the inlet of the first clean air outlet pipe 33; the outlet of the outlet branch pipe 32 is connected to the inlet of the second adsorption zone B; the second clean air outlet pipe 50 is connected to the outlet of the second adsorption zone B.

[0048] like Figure 1 As shown, the polluted gas to be treated enters the first adsorption zone A through the air inlet pipe 20, and the VOC is adsorbed by the first adsorption zone A. If the VOC content of the gas treated by the first adsorption zone A reaches a preset value or is below the preset value, the gas can be directly discharged from the first clean gas outlet pipe 33. If the VOC content of the gas treated by the first adsorption zone A exceeds the preset value, the gas can enter the second adsorption zone B through the outlet branch pipe 32 for further treatment. It can be seen that the use of the second adsorption zone B can be selected according to needs. The VOC concentration at the outlet of the second adsorption zone B is lower than the VOC concentration at the outlet of the first adsorbent zone.

[0049] In this example, two adsorption zones are divided on one wheel 10. If the VOC content in the gas after passing through the first adsorption zone A still exceeds the preset value, it can be further adsorbed and removed through the second adsorption zone B. The demand can be met without two wheels 10, thereby improving the VOC processing capacity of the entire system and enabling hierarchical removal.

[0050] In this example, the VOC treatment wheel system further includes: a VOC content detection device 40 for detecting the VOC content in the gas flowing through the gas outlet main pipe, which is arranged on the gas outlet main pipe 31. The VOC content detection device 40 can detect the VOC concentration of the gas flowing out of the gas outlet main pipe 31.

[0051] Furthermore, the VOC treatment wheel system also includes a control module and a valve, the valve is located at the entrance of the outlet branch pipe 32 and the first clean gas outlet pipe 33, and is electrically connected to the control module, and the VOC content detection device 40 is also electrically connected to the control module. The VOC content detection device 40 sends the VOC concentration signal of the detected gas to the control module, and the control module controls the valve to communicate with the outlet branch pipe 32 or the first clean gas outlet pipe 33 according to the VOC concentration signal.

[0052] In this example, the rotor 10 further includes: a first desorption zone C arranged along its own circumference and in sequence with the second adsorption zone B, and a second desorption zone D located between the first desorption zone C and the first adsorption zone A, and the first desorption zone C and the second desorption zone D are arranged independently of each other. The first adsorption zone A, the second adsorption zone B, the first desorption zone C and the second desorption zone D are arranged along the circumference of the rotor 10 as shown in the schematic diagram Figure 2 shown.

[0053] In this example, the VOC treatment wheel system further includes: a heater F for heating the regeneration gas, and the outlet of the heater F is connected to the inlet of the first desorption zone C and the inlet of the second desorption zone D respectively.

[0054] In this example, the VOC treatment wheel system also includes: a first circulation pipe 60, the inlet of the first circulation pipe 60 is connected to an outlet of the second desorption zone D, and the outlet of the first circulation pipe 60 is connected to the air intake pipe 20; a first concentration pipe 70, the inlet of the first concentration pipe 70 is connected to the outlet of the first desorption zone C; a second concentration pipe 80, the outlet of the first concentration pipe 70 is connected to the second concentration pipe 80; the inlet of the second concentration pipe 80 is connected to another outlet of the second desorption zone D; a catalytic combustion mechanism E, and the outlet of the second concentration pipe 80 is connected to the inlet of the catalytic combustion mechanism E.

[0055] like Figure 1 As shown, part of the gas treated in the second desorption zone D enters the catalytic combustion mechanism E for catalytic combustion, and burns VOC into non-polluting gases such as carbon dioxide and water. The other part enters the intake pipe 20 through the first circulation pipe 60, and then enters the first adsorption zone A for circulation. It can be understood that the VOC content in the gas treated in the second desorption zone D is lower than the VOC content in the polluted gas to be treated. The mixture of the two can reduce the treatment pressure of the first adsorption zone A, and ensure the adsorption effect of VOC.

[0056] Generally, the catalytic combustion mechanism E includes a combustion device and a catalytic device, wherein the combustion device is used to burn VOCs, and the catalytic device includes a catalyst for further catalytically decomposing the VOCs.

[0057] The heater F heats the air flow. After the hot air flow passes through the first desorption zone C and the second desorption zone D, it can take away the VOCs on the first desorption zone C and the second desorption zone D, regenerate the first desorption zone C and the second desorption zone D, and transform them into the first adsorption zone A and the second adsorption zone B.

[0058] In this example, the VOC treatment wheel system further includes: a second circulation pipe 90 , the inlet of the second circulation pipe 90 is connected to the outlet of the catalytic combustion mechanism E, and the outlet of the second circulation pipe 90 is connected to the inlet of the heater F.

[0059] like Figure 1 As shown, the second circulation pipe 90 can circulate part of the gas generated after catalytic combustion into the heater F. The circulating gas flowing out from the catalytic combustion mechanism E not only has VOC basically removed, but also has a higher temperature. It circulates into the first desorption zone C and the second desorption zone D and can be used to regenerate the wheel 10. At the same time, the waste heat in the airflow is also reused, which reduces the burden on the heater F, reduces the energy consumption of the heater F, and is conducive to saving energy.

[0060] In this example, the VOC treatment wheel system also includes: a shell, a chamber and end covers located at both ends of the chamber, the wheel 10 is rotatably arranged on the shell and partially or completely located in the chamber, one of the end covers has a first inlet aligned with the inlet of the first adsorption zone A, and a first outlet aligned with the outlet of the second adsorption zone B; the other end cover has a second outlet aligned with the outlet of the first adsorption zone A, and a second inlet aligned with the inlet of the second adsorption zone B first adsorption zone A second adsorption zone B first adsorption zone A second adsorption zone B.

[0061] Furthermore, the second desorption zone D has two outlets; one of the end covers also has a third outlet aligned with the outlet of the first desorption zone C, and a fourth outlet and a fifth outlet respectively aligned with the two outlets of the second desorption zone D; the other end cover also has a third inlet aligned with the inlet of the first desorption zone C and a fourth inlet aligned with the inlet of the second desorption zone D first desorption zone C second desorption zone D first desorption zone C second desorption zone D.

[0062] In this example, the rotating wheel 10 is located in the housing and can rotate along its axis in the chamber of the housing. Moreover, by rotating an appropriate angle, for example, 90° or 180°, the first adsorption zone A can be rotated to the position of the first desorption zone C. At this time, the first adsorption zone A can be transformed into the first desorption zone C.

[0063] This example also provides a VOC treatment method, which is applied to the above-mentioned VOC treatment wheel system, including: allowing the exhaust gas containing VOC to enter the first adsorption zone A through the air intake pipe 20, and after the exhaust gas is adsorbed by the first adsorption zone A, it enters the exhaust main pipe 31, and then enters the second adsorption zone B through the exhaust branch pipe 32, or is discharged from the first clean gas outlet pipe 33;

[0064] The gas entering the second adsorption zone B is adsorbed in the second adsorption zone B and then discharged from the second clean gas outlet pipe 50 .

[0065] The VOC treatment method of this example has the following beneficial effects. By dividing two adsorption zones on one wheel 10, if the VOC content in the gas after passing through the first adsorption zone A still exceeds the preset value, it can be further adsorbed and removed through the second adsorption zone B. The demand can be met without two wheels 10, thereby improving the VOC treatment capacity of the entire system.

[0066] In this example, the exhaust gas containing VOC enters the first adsorption zone A through the air intake pipe 20. After being adsorbed by the first adsorption zone A, the exhaust gas enters the exhaust main pipe 31, and then enters the second adsorption zone B through the exhaust branch pipe 32, or is discharged through the first clean gas outlet pipe 33;

[0067] It also includes: using the VOC content detection device 40 to detect the VOC concentration of the gas flowing out of the gas outlet main pipe 31; if the VOC concentration is less than or equal to a preset value, the gas outlet main pipe 31 is connected to the first clean gas outlet pipe 33, and the gas after adsorption treatment is discharged from the first clean gas outlet pipe 33; if the VOC concentration is greater than the preset value, the gas outlet main pipe 31 is connected to the gas outlet branch pipe 32, and after adsorption in the second adsorption area B, the gas after adsorption treatment is discharged from the second clean gas outlet pipe 50.

[0068] In this case, the VOC treatment method also includes:

[0069] Rotate the rotating wheel 10, the first adsorption zone A is transformed into the first desorption zone C, and the second adsorption zone B is transformed into the second desorption zone D;

[0070] The heater F is used to heat the airflow passing through the first desorption zone C and the second desorption zone D, so as to perform desorption regeneration on the first desorption zone C and the second desorption zone D;

[0071] Part of the gas flow passing through the second desorption zone D passes through the first circulation duct 60 and communicates with the air intake duct 20 to circulate again into the first adsorption zone A;

[0072] Another part of the gas flow passing through the second adsorption zone B enters the second concentration pipeline 80;

[0073] The gas flow passing through the first desorption zone C enters the second concentration pipeline 80 through the first concentration pipeline 70;

[0074] The airflow in the second concentration pipe 80 is connected to the catalytic combustion mechanism E;

[0075] The catalytic combustion mechanism E catalytically burns the airflow.

[0076] In this example, the VOC content in the gas treated in the second desorption zone D is lower than the VOC content in the polluted gas to be treated. After circulating through the first circulation pipeline 60, the two are mixed to reduce the treatment pressure of the first adsorption zone A, thereby ensuring the adsorption effect of VOC.

[0077] In this example, after the catalytic combustion mechanism E catalytically burns the airflow, it also includes:

[0078] The airflow flowing out of the catalytic combustion mechanism E enters the heater F through the second circulation pipe 90 .

[0079] like Figure 1As shown, the second circulation pipe 90 can circulate part of the gas generated after catalytic combustion into the heater F. The circulating gas flowing out from the catalytic combustion mechanism E not only has VOC basically removed, but also has a higher temperature. It circulates into the first desorption zone C and the second desorption zone D and can be used to regenerate the wheel 10. At the same time, the waste heat in the airflow is also reused, which reduces the burden on the heater F, reduces the energy consumption of the heater F, and is conducive to saving energy.

[0080] Other operations of the VOC treatment wheel system and the VOC treatment method according to this example are understandable and easily implemented by those skilled in the art, and thus will not be described in detail.

[0081] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A VOC treatment wheel system, characterized in that: The VOC treatment wheel system comprises: A rotating wheel, wherein the rotating wheel has a first adsorption area and a second adsorption area which are sequentially arranged along its own circumference and are independent of each other; an air inlet duct, connected to the inlet of the first adsorption zone; An air outlet pipeline comprises an air outlet main pipe, an air outlet branch pipe and a first clean air outlet pipe, wherein the inlet of the air outlet main pipe is connected to the outlet of the first adsorption zone, and the outlet of the air outlet main pipe is respectively connected to the inlet of the air outlet branch pipe and the inlet of the first clean air outlet pipe; the outlet of the air outlet branch pipe is connected to the inlet of the second adsorption zone; a second clean gas outlet pipe, connected to the outlet of the second adsorption zone; The VOC treatment wheel system further includes a VOC content detection device, a control module and a valve for detecting the VOC content in the gas flowing through the gas outlet main pipe, wherein the VOC content detection device is arranged on the gas outlet main pipe; The VOC content detection device is used to detect the VOC content in the gas entering the gas outlet main pipe. If the VOC content is less than or equal to a preset value, the gas outlet main pipe is connected to the first clean gas outlet pipe, and the gas after adsorption treatment is discharged from the first clean gas outlet pipe; if the VOC content is greater than the preset value, the gas outlet main pipe is connected to the gas outlet branch pipe, and after adsorption in the second adsorption area, the gas after adsorption treatment is discharged from the second clean gas outlet pipe; The valve is located at the entrance of the gas outlet branch pipe and the first clean gas outlet pipe, and is electrically connected to the control module, and the VOC content detection device is electrically connected to the control module; the VOC content detection device sends the VOC concentration signal of the detected gas to the control module, and the control module controls the valve to be connected to the gas outlet branch pipe or to the first clean gas outlet pipe according to the VOC concentration signal.

2. The VOC treatment wheel system according to claim 1, characterized in that: The rotor further includes a first desorption zone arranged along its own circumference and in sequence with the second adsorption zone, and a second desorption zone located between the first desorption zone and the first adsorption zone, and the first desorption zone and the second desorption zone are arranged independently of each other.

3. The VOC treatment wheel system according to claim 2, characterized in that: The VOC treatment wheel system further includes a heater for heating the regeneration gas, wherein an outlet of the heater is respectively connected to an inlet of the first desorption zone and an inlet of the second desorption zone.

4. The VOC treatment wheel system according to claim 3, characterized in that: The VOC treatment wheel system also includes: a first circulation pipeline, wherein an inlet of the first circulation pipeline is connected to an outlet of the second desorption zone, and an outlet of the first circulation pipeline is connected to the air intake pipeline; a first concentrating pipeline, wherein an inlet of the first concentrating pipeline is connected to an outlet of the first desorption zone; a second concentrating pipeline, wherein the outlet of the first concentrating pipeline is connected to the second concentrating pipeline; and the inlet of the second concentrating pipeline is connected to another outlet of the second desorption zone; Catalytic combustion mechanism, the outlet of the second concentration pipe is communicated with the inlet of the catalytic combustion mechanism.

5. The VOC treatment wheel system according to claim 4, characterized in that: The VOC treatment wheel system also includes: A second circulation pipe, wherein the inlet of the second circulation pipe is connected to the outlet of the catalytic combustion mechanism, and the outlet of the second circulation pipe is connected to the inlet of the heater.

6. The VOC treatment wheel system according to claim 2, characterized in that: The VOC treatment wheel system also includes: The housing comprises a chamber and end covers at both ends of the chamber, the rotating wheel is rotatably arranged on the housing and is partially or completely located in the chamber, one of the end covers comprises a first inlet aligned with the inlet of the first adsorption zone, and a first outlet aligned with the outlet of the second adsorption zone; the other end cover comprises a second outlet aligned with the outlet of the first adsorption zone, and a second inlet aligned with the inlet of the second adsorption zone.

7. The VOC treatment wheel system according to claim 6, characterized in that: The second desorption zone has two outlets; one of the end covers also has a third outlet aligned with the outlet of the first desorption zone, and a fourth outlet and a fifth outlet respectively aligned with the two outlets of the second desorption zone; the other end cover also has a third inlet aligned with the inlet of the first desorption zone and a fourth inlet aligned with the inlet of the second desorption zone.

8. A VOC treatment method, characterized in that: The treatment method is carried out using the VOC treatment wheel system described in any one of claims 1 to 7, and the treatment method includes: allowing the VOC-containing waste gas to enter the first adsorption zone through an air intake pipe, and after adsorption in the first adsorption zone, enter the main outlet pipe, and then enter the second adsorption zone through the outlet branch pipe or be discharged from the first clean gas outlet pipe; wherein, a VOC content detection device is used to detect the VOC content in the gas entering the main outlet pipe, and if the VOC content is less than or equal to a preset value, the main outlet pipe is connected to the first clean gas outlet pipe, and the gas after adsorption treatment is discharged from the first clean gas outlet pipe; if the VOC content is greater than the preset value, the main outlet pipe is connected to the outlet branch pipe, and after adsorption in the second adsorption zone, the gas after adsorption treatment is discharged from the second clean gas outlet pipe.

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