A VOCs treatment device and distributed treatment method used therein

Abstract

The present invention discloses a VOCs treatment device and a distributed treatment method used therein, with the purpose of solving the problem that many but small VOCs pollution sources use activated carbon to adsorb VOCs gas, and the adsorbed saturated activated carbon produced is directly discarded, which will lead to the problem of waste of resources and hazardous waste treatment. The present application adopts a distributed treatment method, based on the establishment of an activated carbon adsorption device on-site (distributed treatment) at the VOCs pollution source, and realizes the regeneration of the adsorbed saturated activated carbon through a regeneration device (centralized regeneration), which effectively saves the company's investment in the combustion regeneration device and avoids the problem of saturated activated carbon being directly discarded. The present application can meet the needs of enterprises for the treatment of small-volume and low-concentration VOCs gases, and has high application value and good application prospects. The present application is ingeniously conceived, reasonably designed, and easy to operate, and has important progressive significance for the control of volatile organic compounds and the improvement of the environment.

Description

Technical Field

[0001] The present invention relates to the field of volatile organic compound treatment, in particular to a VOCs treatment device and a distributed treatment method adopted by the device. Background Art

[0002] Volatile organic compounds (VOCs) are key precursors of fine particulate matter (PM2.5) and ozone (O3). Therefore, controlling VOCs emissions is of great significance and imperative to improve haze and ozone pollution.

[0003] Among the end-of-pipe treatment methods for controlling VOCs, adsorption and combustion technologies are the most widely used due to their good treatment effects. If the adsorbent is discarded after being used once, it is a huge waste of resources. Therefore, the combined process of adsorption + combustion has been used more frequently. For enterprises with large gas volumes and low VOCs concentrations, the treatment process of zeolite wheel concentration + catalytic combustion is usually selected. However, some enterprises or regions have many VOCs pollution sources, small gas volumes, and low gas concentrations. Given that the pollution sources are dispersed and cannot be centrally treated, it is technically feasible to establish a set of adsorption + combustion devices for each pollution source for treatment. However, due to the high one-time investment and high operating costs of the combustion device, and the high technical and management levels of the operators, it is economically unreasonable.

[0004] Therefore, a new method and / or device is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the invention is to use activated carbon to adsorb VOCs gas for many small VOCs pollution sources. The adsorption saturated activated carbon produced is directly discarded, which will lead to the problem of waste of resources and hazardous waste treatment. If a combustion regeneration device is established for each set of adsorption saturated activated carbon separately, the investment is high. A VOCs treatment device and a distributed treatment method used by it are provided. The present application adopts a distributed treatment method, based on the establishment of an activated carbon adsorption device on-site (distributed treatment) at the VOCs pollution source, and realizes the regeneration of adsorption saturated activated carbon through a regeneration device (centralized regeneration), which effectively saves the investment of enterprises in the combustion regeneration device and avoids the problem of saturated activated carbon being directly discarded. The present application can meet the needs of enterprises for the treatment of small-volume and low-concentration VOCs gases, and has high application value and good application prospects. The present application is ingeniously conceived, reasonably designed, and easy to operate. It has important progressive significance for the control of volatile organic compounds and the improvement of the environment.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A VOCs treatment device includes an adsorption unit for adsorbing VOCs and an adsorbent regeneration unit for regenerating an adsorbent;

[0008] The adsorption unit includes a waste gas collection component for VOCs gas collection, a pretreatment component, an adsorption tower, a placement drawer, an adsorbent, and an exhaust gas emission device. The waste gas collection component is connected to the waste gas pretreatment component and the pretreatment component can remove dust or droplets in the VOCs gas collected by the waste gas collection component. The pretreatment component is connected to the adsorption tower through a pipeline and the gas treated by the pretreatment component can enter the adsorption tower for adsorption. The adsorbent is arranged in the placement drawer and the adsorbent and the placement drawer constitute an adsorption component. There is at least one adsorption component, and the adsorption component is arranged in the adsorption tower and the adsorbent can be used to adsorb the VOCs therein. The adsorption tower is connected to the exhaust gas emission device and the gas that meets the standards after being treated by the adsorption tower can be discharged through the exhaust gas emission device.

[0009] The adsorbent regeneration unit includes a desorption tower for regenerating the adsorbent in the adsorption tower, a desorption unit fan, a combustion device, a fresh air fan, and an exhaust gas emission device. The desorption tower, the desorption unit fan, and the combustion device form a hot air circulation system through a pipeline, and the VOCs adsorbed by the adsorption component in the desorption tower can enter the combustion device for combustion purification after being desorbed by the hot air. The fresh air fan is connected to the hot air circulation system and can pump air into the hot air circulation system to meet the combustion needs of the combustion device. The hot air circulation system is connected to the exhaust gas emission device and part of the intake air in the hot air circulation system can be discharged after being purified by the exhaust gas emission equipment.

[0010] The adsorption unit further comprises an adsorption unit fan, which is arranged on a pipeline of the adsorption unit and can provide power for the operation of the adsorption unit.

[0011] The ratio of the number of the adsorbent regeneration units to the number of the adsorption units is 1:1-50.

[0012] The placement drawer is rectangular, circular or polygonal, and adopts a standardized and modular design. The placement drawers are sequentially arranged in the adsorption tower or the desorption tower.

[0013] The exhaust gas collection component includes an air collecting hood and a fan. The air collecting hood is connected to the pretreatment component through a pipeline, and the fan can provide power for the VOCs gas.

[0014] The pretreatment component includes one or more of a filtering device, an oil mist removal device, and a flue gas cooling device.

[0015] The adsorption tower is a fixed bed structure.

[0016] The adsorbent is one or more of activated carbon, zeolite and molecular sieve.

[0017] The combustion device is one or more of a catalytic combustion device and a thermal combustion device.

[0018] The energy source for the combustion device to provide supplementary heat source is one or more of electricity, petroleum gas and natural gas.

[0019] The adsorbent regeneration unit adopts a fixed design or a mobile design.

[0020] The distributed treatment method based on the aforementioned VOCs treatment device comprises the following steps:

[0021] (1) placing an adsorption assembly consisting of an adsorbent and a placement drawer in an adsorption unit, and adsorbing VOCs gas through the adsorption unit;

[0022] (2) After the adsorbent in the adsorption unit reaches saturation, the placement drawer with the adsorbent is taken out as a whole, and the taken out placement drawer is placed on the desorption tower of the adsorbent regeneration unit;

[0023] (3) The adsorbent regeneration unit regenerates the saturated adsorbent placed in the drawer until the adsorbent regains its activity;

[0024] (4) Take out the regenerated adsorbent and the storage drawer as a whole and set them aside;

[0025] In the step (1), there is at least one adsorption assembly, and the adsorption assemblies are sequentially arranged in the adsorption tower of the adsorption unit.

[0026] In the step (3), the adsorption components are sequentially arranged in the adsorption tower of the adsorption unit.

[0027] After one adsorption regeneration is completed, repeat steps 2, 3, and 4 to regenerate the adsorbent for the next time.

[0028] In response to the above-mentioned problems, the present application provides a VOCs treatment device and a distributed treatment method adopted by the same. In the present application, an on-site adsorption unit is used to treat VOCs so that the emission gas meets the standard, and then the adsorbent is regenerated so that the adsorbent regains the ability to adsorb VOCs after desorption. That is, in a certain enterprise or region, each VOCs pollution source establishes VOCs collection, pretreatment, and adsorption equipment on-site (that is, sets up corresponding adsorption units), and then uniformly establishes one or more VOCs regeneration devices (that is, adsorbent regeneration units), and regenerates a certain adsorption saturated adsorption component through the adsorbent regeneration unit.

[0029] With this application, VOCs are treated through an adsorption unit, and the VOCs are discharged in compliance with the standards after treatment, meeting environmental protection requirements, and multiple adsorption units can share a set of adsorbent regeneration units. Compared with existing treatment devices, this application requires less investment, saves space, and has a good treatment effect; for a single VOCs pollution source, there is only an on-site activated carbon adsorption system (adsorption unit), so management is simple and the operating cost is low. At the same time, this application innovatively adopts an adsorption component design consisting of a drawer, which can not only ensure that the adsorbent is placed to meet the adsorption requirements, but also facilitate the removal and installation of the adsorbent.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] (1) In the present application, the adsorption unit is designed on-site, which can be operated for a long time. The adsorption unit only needs to be simply operated for normal treatment, and the daily operation cost is low;

[0032] (2) In this application, the adsorbent adsorbs a large amount of VOCs, the amount of regenerated gas is small, the desorbed VOCs have a high concentration and a high combustion calorific value, and auxiliary fuel is required only during the startup and shutdown stages, so the operating cost of the adsorbent regeneration unit is low;

[0033] (3) In this application, the adsorbent regeneration unit and the adsorption unit adopt a one-to-many design, and the initial investment of the device is low;

[0034] (4) In this application, the adsorption component design consisting of a drawer is adopted, which has good interchangeability, is easy to replace, and is simple to operate;

[0035] (5) The adsorbent regeneration unit of the present application can be of fixed or mobile design, and the combustion device is small in size and low in investment, which can significantly reduce the equipment cost;

[0036] (6) In the present application, in the adsorbent regeneration unit, the desorbed VOCs are burned and purified in a combustion device, a portion of the purified gas is discharged, and a portion of the returned gas is mixed with the gas blown in by the fresh air blower. The mixed hot air enters the desorption tower, which can meet the needs of continuous operation and has a good energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0038] Figure 1 Schematic diagram of the structure of the adsorption unit in Example 1.

[0039] Figure 2 Schematic diagram of the structure of the adsorbent regeneration unit in Example 1.

[0040] Markings in the figure: 1. Air collecting hood, 2. Pretreatment component, 3. Adsorption tower, 4. Adsorption unit fan, 5. Placement drawer, 6. Desorption tower, 7. Desorption unit fan, 8. Combustion device, 9. Fresh air fan. DETAILED DESCRIPTION

[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0042] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0043] Example 1

[0044] A certain enterprise has 11 VOCs pollution sources, which are located at a certain distance from each other. Among them, the exhaust gas volume is 20000m 3 There are 3 places with a speed of 15,000 m 3 There are 6 places with a speed of 10000m / h. 3 There are 2 places with a pollution rate of 1.1 / h. The pollution sources are generated within 8 hours during working days. 11 sets of on-site activated carbon adsorption units and 1 set of adsorbent regeneration unit were established.

[0045] Among them, the adsorption unit includes a waste gas collection component for VOCs gas collection, a pretreatment component, an adsorption tower, a placement drawer, an adsorbent, and an exhaust gas emission device. In this embodiment, the waste gas collection component includes a gas collection hood, the gas collection hood is connected to the pretreatment component through a pipeline, the pretreatment component is connected to the adsorption tower through a pipeline, the adsorbent is arranged in the placement drawer and the adsorbent and the placement drawer constitute an adsorption component, the adsorption component is arranged in the adsorption tower and the adsorbent can be used to adsorb the VOCs therein, the adsorption tower is connected to the fan, and the fan is connected to the exhaust gas emission device. In this embodiment, the adsorbent is activated carbon, the adsorption tower adopts a fixed bed structure, the pretreatment component is a filter device, and the exhaust gas emission device is a chimney.

[0046] The fan provides power for the VOCs gas, so that the VOCs gas is collected through the gas collection hood and enters the pretreatment component, and then the pretreatment component removes the dust or droplets in the VOCs gas collected by the exhaust gas collection component. The gas treated by the pretreatment component enters the adsorption tower for adsorption, and the gas that meets the standards after treatment by the adsorption tower can be discharged through the exhaust gas emission equipment. In this embodiment, based on the characteristics of the VOCs pollution source, 20000m 3 / h and 15000 m 3 / h adsorption tower has 4 groups of adsorption components, 10000 m 3 / h adsorption tower has 2 groups of adsorption components, and the adsorption components are arranged in the adsorption tower. According to the different exhaust gas volumes of VOCs pollution sources, the number of adsorption components in the adsorption tower can be appropriately adjusted. At the same time, the adsorbent regeneration unit includes a desorption tower, a desorption unit fan, a combustion device, a fresh air fan, and an exhaust gas emission device for regenerating the adsorbent in the adsorption tower. The desorption tower, the desorption unit fan, and the combustion device form a hot air circulation system through pipelines. The fresh air fan is connected to the hot air circulation system, and the hot air circulation system is connected to the exhaust gas emission equipment. In this embodiment, the adsorbent regeneration unit processes 20,000 m 3 / h, the combustion device is a catalytic combustion device, the desorption tower is provided with 4 groups of placement drawers, the placement drawers are rectangular, the placement drawers adopt standardized and modular design, and the placement drawers are horizontally placed in the adsorption tower or the desorption tower in sequence.

[0047] After the adsorbent in the component to be adsorbed has worked for a period of time, the adsorption component is taken out from the adsorption tower and sent to the desorption tower. In the desorption tower, the adsorption components are arranged in the desorption tower in sequence. The combustion device generates hot air, which is sent into the desorption tower through a pipeline, and the adsorption components in the desorption tower are desorbed; after the VOCs adsorbed by the adsorption component are desorbed by the hot air, they enter the combustion device for combustion purification under the drive of the desorption unit fan; part of the purified gas is discharged through the exhaust gas emission equipment, and part of the returned gas is mixed with the gas blown in by the fresh air fan, and the mixed hot air enters the desorption tower, which can meet the needs of continuous operation.

[0048] The working process of the device is as follows.

[0049] The activated carbon adsorption unit operates until the activated carbon of a certain device is close to saturation or has been saturated, then the activated carbon and the adsorption assembly consisting of the placement drawer are taken out and placed on the desorption tower of the adsorbent regeneration unit; then, the adsorbent regeneration unit starts to operate, and the combustion device works to allow hot gas to enter the desorption tower, and the VOCs adsorbed by the activated carbon are thermally displaced. The VOCs gas reacts in the combustion chamber of the combustion device to generate CO2 and water; after treatment, the gas meets the standard, part of the gas is discharged through the chimney of the adsorbent regeneration unit (i.e., the exhaust gas emission equipment), and part of the hot gas is mixed with the cold air blown in by the fresh air fan and enters the activated carbon desorption tower. After a few hours, the VOCs concentration in the gas regenerated from the activated carbon desorption tower is lower than the emission standard, and the regeneration of the entire system is completed. After the adsorbent cools to room temperature, the regenerated adsorbent and the placement drawer are taken out as a whole and returned to the adsorption unit.

[0050] To ensure that the activated carbon in each adsorption unit can be regenerated in time, the activated carbon in each adsorption unit can be regenerated once a month. This adsorbent regeneration unit is fixed. Since the properties of the VOCs in the pollution source are similar, the adsorbent and the placement drawer are both spare, which can ensure that the operation of the adsorption unit and the adsorbent regeneration unit can be completely independent.

[0051] According to actual measurements, the concentration of VOCs in the exhaust gas before treatment is 50-80 mg / m 3 After activated carbon adsorption, the exhaust gas is purified and the concentration of VOCs in the exhaust gas is ≤10mg / m 3 After one month of adsorption, the activated carbon was taken out for regeneration at a temperature of 90°C. The regenerated VOCs concentration was ≤6000mg / m 3 , VOCs react in the combustion chamber to generate CO2 and water, and the VOCs in the gas after combustion is ≤60mg / m 3 , the treated gas meets the emission standards. The device needs to start the burner within about half an hour of system startup and shutdown to burn petroleum gas to heat the VOCs-containing gas to the catalyst ignition temperature. During normal operation, the heat generated by the reaction can maintain the reaction. No petroleum gas is required, and only the fan consumes electricity. The VOCs treatment device of this application operates stably and reliably, and can meet the needs of VOCs treatment.

[0052] Example 2

[0053] In an industrial park, there are 26 VOCs pollution sources, with the waste gas volume ranging from 5000 to 30000m 3 / h, and built 26 sets of on-site activated carbon adsorption units and 1 set of adsorbent regeneration unit on site.

[0054] The adsorption unit includes a waste gas collection component for VOCs gas collection, a pretreatment component, an adsorption tower, a placement drawer, an adsorbent, and an exhaust gas emission device. In this embodiment, the adsorbent is activated carbon, the adsorption tower adopts a fixed bed structure, and the pretreatment component is one or more of a filtering device, an oil mist removal device, and a flue gas cooling device.

[0055] The fan provides power for the VOCs gas, so that the VOCs gas is collected through the gas collection hood and enters the pretreatment component, and then the dust or droplets in the VOCs gas collected by the exhaust gas collection component are removed by the pretreatment component. The gas treated by the pretreatment component enters the adsorption tower for adsorption, and the gas that meets the standards after treatment by the adsorption tower can be discharged through the exhaust gas emission equipment. In this embodiment, based on the different waste gas volumes and concentrations of the VOCs pollution source, the adsorption components of the adsorption tower are 1 to 6 groups, and the adsorption components are arranged in the adsorption tower.

[0056] At the same time, the adsorbent regeneration unit includes a desorption tower for regenerating the adsorbent in the adsorption tower, a desorption unit fan, a combustion device, a fresh air fan, and an exhaust gas emission device. The desorption tower, the desorption unit fan, and the combustion device form a hot air circulation system through pipelines. The fresh air fan is connected to the hot air circulation system, and the hot air circulation system is connected to the exhaust gas emission device. In this embodiment, the adsorbent regeneration unit processes 30,000 m 3 / h, the combustion device is a catalytic combustion device, the desorption tower is provided with 6 groups of placement drawers, the placement drawers are rectangular, the placement drawers adopt standardized and modular design, and the placement drawers are horizontally placed in the adsorption tower or the desorption tower in sequence.

[0057] After the adsorbent in the component to be adsorbed has worked for a period of time, the adsorption component is taken out from the adsorption tower and sent to the desorption tower. In the desorption tower, the adsorption components are arranged in the desorption tower in sequence. The combustion device generates hot air, which is sent into the desorption tower through a pipeline, and the adsorption components in the desorption tower are desorbed; after the VOCs adsorbed by the adsorption component are desorbed by the hot air, they enter the combustion device for combustion purification under the drive of the desorption unit fan; part of the purified gas is discharged through the exhaust gas emission equipment, and part of the returned gas is mixed with the gas blown in by the fresh air fan, and the mixed hot air enters the desorption tower, which can meet the needs of continuous operation.

[0058] The working process of the device is as follows.

[0059] The activated carbon adsorption unit operates until the activated carbon of a certain device is close to saturation or has been saturated, then the activated carbon and the adsorption assembly consisting of the placement drawer are taken out and placed on the desorption tower of the adsorbent regeneration unit; then, the adsorbent regeneration unit starts to operate, and the combustion device works to allow hot gas to enter the desorption tower, and the VOCs adsorbed by the activated carbon are thermally displaced. The VOCs gas reacts in the combustion chamber of the combustion device to generate CO2 and water; after treatment, the gas meets the standard, part of the gas is discharged through the chimney of the adsorbent regeneration unit (i.e., the exhaust gas emission equipment), and part of the hot gas is mixed with the cold air blown in by the fresh air fan and enters the activated carbon desorption tower. After a few hours, the VOCs concentration in the gas regenerated from the activated carbon desorption tower is lower than the emission standard, and the regeneration of the entire system is completed. After the adsorbent cools to room temperature, the regenerated adsorbent and the placement drawer are taken out as a whole and returned to the adsorption unit.

[0060] In this example, the concentration of VOCs in the exhaust gas before treatment is 50-150 mg / m 3 After activated carbon adsorption, the exhaust gas is purified and the concentration of VOCs in the exhaust gas is ≤60mg / m 3 , the purified waste gas meets the emission standards. The adsorption saturation time of the activated carbon adsorption unit ranges from 1 month to half a year. To ensure that the activated carbon in each adsorption unit can be regenerated in time, the activated carbon in each adsorption unit should be regenerated regularly according to the pollution source. In order to improve the operating efficiency of the regeneration unit and further reduce the regeneration cost, the adsorption components of different companies can be regenerated and adsorbed at the same time for a period of time, and then the activated carbon can be taken out for regeneration. The regeneration temperature is 80℃~120℃, and the regenerated VOCs concentration is ≤6000mg / m 3 , VOCs react in the combustion chamber to generate CO2 and water, and the VOCs in the gas after combustion is ≤60mg / m 3, the treated gas meets the emission standards. The burner needs to be started within about half an hour of system startup and shutdown to burn natural gas to heat the VOCs-containing gas to the catalyst ignition temperature. During normal operation, the heat generated by the reaction can maintain the reaction, and only the fan consumes electricity.

[0061] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A distributed treatment method for VOCs treatment equipment, characterized in that: The steps include: (1) placing an adsorption assembly consisting of an adsorbent and a placement drawer in an adsorption unit, and adsorbing VOCs gas through the adsorption unit; (2) After the adsorbent in the adsorption unit reaches saturation, the placement drawer with the adsorbent is taken out as a whole, and the taken out placement drawer is placed on the desorption tower of the adsorbent regeneration unit; (3) The adsorbent regeneration unit regenerates the saturated adsorbent placed in the drawer until the adsorbent regains its activity; (4) Take out the regenerated adsorbent and the storage drawer as a whole and set them aside; After one adsorption regeneration is completed, repeat steps 2, 3, and 4 to regenerate the adsorbent for the next time; In the step (1), there is at least one adsorption assembly, and the adsorption assembly is sequentially arranged in the adsorption tower of the adsorption unit; The VOCs treatment device used in the method includes an adsorption unit for adsorbing VOCs and an adsorbent regeneration unit for regenerating the adsorbent; The adsorption unit includes a waste gas collection component for VOCs gas collection, a pretreatment component, an adsorption tower, a placement drawer, an adsorbent, and an exhaust gas emission device. The waste gas collection component is connected to the waste gas pretreatment component and the pretreatment component can remove dust or droplets in the VOCs gas collected by the waste gas collection component. The pretreatment component is connected to the adsorption tower through a pipeline and the gas treated by the pretreatment component can enter the adsorption tower for adsorption. The adsorbent is arranged in the placement drawer and the adsorbent and the placement drawer constitute an adsorption component. There is at least one adsorption component, and the adsorption component is arranged in the adsorption tower and the adsorbent can be used to adsorb the VOCs therein. The adsorption tower is connected to the exhaust gas emission device and the gas that meets the standards after being treated by the adsorption tower can be discharged through the exhaust gas emission device. The adsorbent regeneration unit includes a desorption tower for regenerating the adsorbent in the adsorption tower, a desorption unit fan, a combustion device, a fresh air fan, and an exhaust gas emission device. The desorption tower, the desorption unit fan, and the combustion device form a hot air circulation system through a pipeline, and the VOCs adsorbed by the adsorption component in the desorption tower can enter the combustion device for combustion purification after being desorbed by hot air. The fresh air fan is connected to the hot air circulation system and the fresh air fan can pump air into the hot air circulation system to meet the combustion needs of the combustion device. The hot air circulation system is connected to the exhaust gas emission device and part of the intake air in the hot air circulation system can be discharged after being purified by the exhaust gas emission device; The adsorption unit further comprises an adsorption unit fan, the adsorption tower and the adsorption unit fan, and the adsorption unit fan is connected to the tail gas emission equipment; The ratio of the number of the adsorbent regeneration unit to the number of the adsorption units is 1:1 to 50; The placement drawer is rectangular, circular or polygonal, and the placement drawer adopts a standardized and modular design. The placement drawers are sequentially arranged in the adsorption tower or the desorption tower; The adsorption tower is a fixed bed structure; The adsorbent regeneration unit adopts a fixed design or a mobile design; This method adopts a centralized and decentralized treatment method, establishes an activated carbon adsorption device on site at the VOCs pollution source, and realizes the regeneration of the adsorption saturated adsorbent through centralized regeneration; The adsorbent regeneration unit and the adsorption unit adopt a one-to-many design, and multiple adsorption units share one set of adsorbent regeneration units; In the adsorbent regeneration unit, the desorbed VOCs are burned and purified in the combustion device. Part of the purified gas is discharged, and part of the returned gas is mixed with the gas blown in by the fresh air blower. The mixed hot air enters the desorption tower, which can meet the needs of continuous operation.

2. The processing method according to claim 1, characterized in that: The adsorption unit further comprises an adsorption unit fan, which is arranged on a pipeline of the adsorption unit and can provide power for the operation of the adsorption unit.

3. The processing method according to claim 1, characterized in that: The exhaust gas collection component includes an air collecting hood and a fan. The air collecting hood is connected to the pretreatment component through a pipeline, and the fan can provide power for the VOCs gas.

4. The processing method according to claim 1, characterized in that: The pretreatment component includes one or more of a filtering device, an oil mist removal device, and a flue gas cooling device.

5. The processing method according to claim 1, characterized in that: The adsorbent is one or more of activated carbon, zeolite and molecular sieve.

6. The processing method according to claim 1, characterized in that: The combustion device is one or more of a catalytic combustion device and a thermal combustion device.

7. The processing method according to claim 1, characterized in that: The energy source for the combustion device to provide supplementary heat source is one or more of electricity, petroleum gas and natural gas.

8. The processing method according to claim 1, characterized in that: In the step (3), the adsorption components are sequentially arranged in the adsorption tower of the adsorption unit.

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