Uninterrupted exhaust gas purification system

Abstract

The application relates to an uninterrupted waste gas purification system and relates to the VOCs waste gas purification technical field, and aims to solve the problem that the adsorption purification system of waste gas cannot continuously and stably operate. The air supply circuit of the uninterrupted waste gas purification system is used for supplying air to the first adsorption device or the second adsorption device capable of adsorbing volatile organic compounds. The switching circuit is connected with the first adsorption device, the second adsorption device and the chimney, and the desorption circuit is connected with the first adsorption device, the second adsorption device and the chimney. The main control module is connected with the air supply circuit, the switching circuit and the desorption circuit, and the main control module has an adsorption working condition and a purification working condition which are automatically controlled. In the adsorption working condition, the first adsorption device or the second adsorption device adsorbs volatile organic compounds, and the adsorbed and purified gas is discharged through the chimney. In the purification working condition, one of the first adsorption device and the second adsorption device which does not adsorb, carries out purification treatment on the adsorbed volatile organic compounds through the desorption circuit, and the purified gas is discharged through the chimney.

Description

Technical Field

[0001] This application relates to the field of VOCs exhaust gas purification technology, and in particular to an uninterrupted exhaust gas purification system. Background Technology

[0002] Volatile organic compounds (VOCs) are the core medium of air pollution. Currently, the main method for treating industrial VOC emissions is adsorption.

[0003] Traditional adsorption treatment systems are simple in construction, typically consisting of a single-tower structure with a cylindrical or cubic container as the main body. Activated carbon, molecular sieves, or other adsorption materials are filled inside the container to act as the adsorption zone for pollutants in the waste gas. VOCs in the waste gas are drawn into the adsorption zone through the tower inlet by a fan or other power equipment, where they are adsorbed and separated by the adsorption materials, resulting in purified gas being discharged.

[0004] Because adsorbent materials have a limited adsorption capacity, they reach saturation after a period of time, requiring replacement or thermal regeneration. However, this replacement or regeneration process typically necessitates a shutdown, forcing an interruption of industrial production and resulting in losses. Utility Model Content

[0005] This application provides an uninterrupted exhaust gas purification system to solve the problem that exhaust gas adsorption purification systems cannot operate continuously and stably.

[0006] This application provides an uninterrupted waste gas purification system, including an air supply circuit, a first adsorption device, a second adsorption device, a chimney, a switching circuit, a desorption circuit, and a main control module. The air supply circuit supplies air to either the first or second adsorption device, which adsorbs volatile organic compounds. The switching circuit is connected to the first and second adsorption devices and the chimney, and the desorption circuit is also connected to the first and second adsorption devices and the chimney.

[0007] The main control module is connected to the gas supply circuit, switching circuit, and desorption circuit, and features automatically controlled adsorption and purification modes. In adsorption mode, either the first or second adsorption device adsorbs volatile organic compounds (VOCs) and discharges the purified gas through a chimney. In purification mode, the non-adsorption device in the first or second adsorption device purifies the adsorbed VOCs through the desorption circuit and discharges the purified gas through a chimney.

[0008] In some embodiments, the desorption circuit includes a combustion furnace, a first purification circuit, a second purification circuit, and an exhaust circuit. The combustion furnace is used to purify the adsorbed volatile organic compounds by combustion. The first adsorption device and the combustion furnace are connected via the first purification circuit, and the second adsorption device and the combustion furnace are connected via the second purification circuit. The combustion furnace has an exhaust port, which is connected to a chimney via the exhaust circuit. During purification operation, the exhaust circuit is activated, and at least one of the first and second purification circuits is activated.

[0009] In some embodiments, the desorption circuit includes a gas supply device, a first desorption valve, and a second desorption valve. The gas supply device is connected to the first gas inlet of the combustion furnace. The first desorption valve is disposed in the exhaust circuit and is used to control the opening and closing of the exhaust circuit. The first desorption valve and the second desorption valve are connected in parallel to the exhaust port of the combustion furnace, and the first purification circuit and the second purification circuit are disposed in parallel with the second desorption valve. Either the first desorption valve or the second desorption valve may be open, or both may be open simultaneously.

[0010] In some embodiments, the first desorption valve and the second desorption valve are rod valve structures with corresponding opening degrees, and the sum of the opening degrees of the first desorption valve and the second desorption valve is 100%.

[0011] In some embodiments, the desorption circuit includes a third desorption valve, a fourth desorption valve, a fifth desorption valve, and a sixth desorption valve. The third and fourth desorption valves are located in the first purification circuit. The second desorption valve is connected to the gas supply side of the first adsorption device via the third desorption valve, and the gas outlet side of the first adsorption device is connected to the second gas inlet of the combustion furnace via the fourth desorption valve. The fifth and sixth desorption valves are located in the second purification circuit. The second desorption valve is connected to the gas supply side of the second adsorption device via the fifth desorption valve, and the gas outlet side of the second adsorption device is connected to the second gas inlet of the combustion furnace via the sixth desorption valve.

[0012] In some embodiments, the desorption circuit includes a temperature sensor, a flow sensor, and a third gas supply valve. The flow sensor is located on the side of the second desorption valve furthest from the combustion furnace and is used to detect the flow rates of the first and second purification circuits. A temperature sensor is installed at the exhaust port of the combustion furnace to detect the exhaust temperature. The third gas supply valve is connected in parallel to the second desorption valve on the side closest to the combustion furnace and is used to supply external gas to the first and second purification circuits.

[0013] In some implementations, the gas supply device, the first desorption valve, the second desorption valve, the third desorption valve, the fourth desorption valve, the fifth desorption valve, the sixth desorption valve, the third gas supply valve, the flow sensor, and the temperature sensor are electrically connected to the main control module.

[0014] In some embodiments, the switching circuit includes a first switching valve and a second switching valve. The first switching valve is connected between the chimney and the first adsorption device, and the second switching valve is connected between the chimney and the second adsorption device. The first switching valve, the second switching valve, and the exhaust circuit are arranged in parallel. The first purification circuit is arranged in parallel with the first switching valve on the gas supply side of the first adsorption device, and the second purification circuit is arranged in parallel with the second switching valve on the gas supply side of the second adsorption device. The first and second switching valves are electrically connected to the main control module.

[0015] In some embodiments, the gas supply circuit includes a first gas supply line, a first gas supply valve, a second gas supply valve, a first gas sensor, and a second gas sensor.

[0016] A first gas supply line is connected to a first adsorption device via a first gas supply valve, and the first gas supply line is connected to a second adsorption device via a second gas supply valve. A first gas sensor is installed on the outlet side of the first adsorption device to collect the concentration information of volatile organic compounds. A second gas sensor is installed on the outlet side of the second adsorption device to collect the concentration information of volatile organic compounds.

[0017] The first gas supply valve, the second gas supply valve, the first gas sensor, and the second gas sensor are electrically connected to the main control module and are used to control the gas supply to the first adsorption device or the second adsorption device.

[0018] In some embodiments, the uninterrupted exhaust gas purification system further includes a first fan, a second fan, and a third fan. The first fan is disposed between the first air supply valve and the first adsorption device, the second fan is disposed between the second air supply valve and the second adsorption device, and the third fan is disposed on the air supply side of the chimney. The first fan, the second fan, and the third fan are electrically connected to the main control module.

[0019] The technical solutions provided in this application have the following advantages compared with the prior art: During system operation, the main control module sequentially activates the gas supply circuit, the first adsorption device, and the chimney, switching the first adsorption device to adsorption mode. After being purified by the adsorption medium layer within the first adsorption device, the waste gas enters the chimney through the switching circuit for emission, achieving purified waste gas treatment. Simultaneously, because the second adsorption device adsorbs a large amount of volatile organic compounds (VOCs), the main control module sequentially activates the second adsorption device, the desorption circuit, and the chimney. This allows the second adsorption device to cyclically regulate temperature, humidity, and pressure through the desorption circuit, ensuring sufficient desorption and separation of VOCs. The desorption circuit can also decompose or react VOCs through catalysis, high-temperature combustion, or other means to generate pollution-free gases or particulate matter. Finally, the reacted gases or particulate matter are discharged through the chimney connected to the desorption circuit, achieving cyclical desorption and decomposition purification of VOCs in the second adsorption device. Thus, under the regulation of the main control module, the first and second adsorption devices alternately switch between adsorption and purification modes, allowing for alternating adsorption and regeneration, thereby achieving continuous automated waste gas treatment.

[0020] This application's solution utilizes the alternating operation of the first and second adsorption devices, enabling parallel adsorption and regeneration processes to meet the automated treatment requirements of continuous waste gas. For example, in automotive painting workshops, the original system required downtime of six hours or more daily for adsorbent replacement. This system allows for continuous adsorption and purification year-round, eliminating production interruptions caused by adsorbent replacement and meeting continuous production needs. The linkage design between the desorption loop and the first and second adsorption devices replaces the manual disassembly and regeneration process, and automated switching control via the main control module eliminates the need for operators to contact the saturated adsorbent, significantly reducing health risks. This allows the purification system to operate automatically and stably, automatically switching between adsorption and purification modes, minimizing human error. Attached Figure Description The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 This is a schematic diagram of the overall structure of an uninterrupted exhaust gas purification system provided in an embodiment of this application; Figure 2 for Figure 1 The diagram shows the overall structure of the uninterrupted exhaust gas purification system under one of its operating conditions. Figure 3 A schematic diagram of the connection structure of an uninterrupted exhaust gas purification system provided in an embodiment of this application; Figure 4 for Figure 1 The diagram shows the flow direction of the uninterrupted exhaust gas purification system in the first state. Figure 5 for Figure 1 The diagram shows the flow direction of the uninterrupted exhaust gas purification system in the second state. Figure 6 A schematic diagram of the first adsorption device performing adsorption operation; Figure 7 This is a schematic diagram showing the first adsorption device performing purification operation and the second adsorption device performing adsorption operation.

[0024] Explanation of reference numerals in the attached figures: 100. Gas supply circuit; 110. First gas supply line; 120. First gas supply valve; 130. Second gas supply valve; 140. First gas sensor; 150. Second gas sensor; 210. First adsorption device; 220. Second adsorption device; 230. First fan; 240. Second fan; 250. Third fan; 300. Chimney; 400. Switching circuit; 410. First switching valve; 420. Second switching valve; 500, Desorption circuit; 510, Combustion furnace; 511, Exhaust port; 512, First air inlet; 513, Second air inlet; 520. First purification circuit; 521. Third desorption valve; 522. Fourth desorption valve; 530. Second purification circuit; 531. Fifth desorption valve; 532. Sixth desorption valve; 540. Exhaust circuit; 541. First desorption valve; 550. Gas supply device; 561. Second desorption valve; 562. Flow sensor; 563. Temperature sensor; 564. Third gas supply valve; 600. Main control module. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0027] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0028] Figure 1 This is a schematic diagram of the overall structure of an uninterrupted exhaust gas purification system provided in an embodiment of this application. Figure 2 for Figure 1 The diagram shows the overall structure of the uninterrupted exhaust gas purification system under one of its operating conditions. Figure 3 This is a schematic diagram of the connection structure of an uninterrupted exhaust gas purification system provided in an embodiment of this application. Figure 4 for Figure 1 The diagram shows the flow direction of the uninterrupted exhaust gas purification system in its first state. Figure 5 for Figure 1 The diagram shows the flow direction of the uninterrupted exhaust gas purification system in the second state. Figure 6This is a schematic diagram of the first adsorption device performing adsorption operation. Figure 7 This is a schematic diagram showing the first adsorption device performing purification operation and the second adsorption device performing adsorption operation.

[0029] Please see Figures 1 to 7 This application provides an uninterrupted exhaust gas purification system to solve the problem that exhaust gas adsorption purification systems cannot operate continuously and stably.

[0030] like Figure 1 and Figure 3 As shown, the uninterrupted exhaust gas purification system includes an air supply circuit 100, a first adsorption device 210, a second adsorption device 220, a chimney 300, a switching circuit 400, and a desorption circuit 500. The air supply circuit 100 supplies air to either the first adsorption device 210 or the second adsorption device 220, which adsorb volatile organic compounds. The switching circuit 400 is connected to the first adsorption device 210, the second adsorption device 220, and the chimney 300, and the desorption circuit 500 is also connected to the first adsorption device 210, the second adsorption device 220, and the chimney 300.

[0031] like Figure 3 As shown, the uninterrupted exhaust gas purification system also includes a main control module 600, which is connected to the gas supply circuit 100, the switching circuit 400 and the desorption circuit 500. The main control module 600 has automatically controlled adsorption and purification modes.

[0032] like Figure 4 and Figure 5 As shown, in the adsorption process, the first adsorption device 210 or the second adsorption device 220 adsorbs volatile organic compounds and discharges the purified gas through the chimney 300.

[0033] like Figure 4 and Figure 5 As shown, in the purification operation, the adsorbed volatile organic compounds in the first adsorption device 210 and the second adsorption device 220 that are not adsorbed are purified by the desorption circuit 500, and the purified gas is discharged through the chimney 300.

[0034] Among them, the gas supply circuit 100 refers to a pipeline network with gas distribution function, which guides the waste gas that needs to be purified to the corresponding first adsorption device 210 or second adsorption device 220.

[0035] For example, such as Figure 1 and Figure 3As shown, the gas supply circuit 100 includes a first gas supply line 110, a first gas supply valve 120, and a second gas supply valve 130. The first gas supply line 110 is connected to the first adsorption device 210 via the first gas supply valve 120, and the first gas supply line 110 is connected to the second adsorption device 220 via the second gas supply valve 130.

[0036] The first gas supply line 110 to the first adsorption device 210 and the second adsorption device 220 can be flexibly connected and configured using three-way valves and branch pipes to facilitate the flexible arrangement of the various components. In this way, the direction of the waste gas flow to the first adsorption device 210 or the second adsorption device 220 can be flexibly controlled by the first gas supply valve 120 and the second gas supply valve 130.

[0037] The first air supply valve 120 and the second air supply valve 130 can be electrically controlled valves. This allows for automated control of the first air supply valve 120 and the second air supply valve 130 via electronic circuitry. In this way, the flow direction of the waste gas can be flexibly switched between the first adsorption device 210 and the second adsorption device 220 automatically.

[0038] The first adsorption device 210 and the second adsorption device 220 refer to containers filled with porous adsorption material. The interior of the first adsorption device 210 and the second adsorption device 220 can be filled with a reversible adsorption medium layer such as honeycomb activated carbon. This allows the adsorption medium layer to be regenerated by changes in temperature, pressure, or humidity, so that the first adsorption device 210 and the second adsorption device 220 can be used alternately and repeatedly.

[0039] For example, the reversible adsorption medium layer can be a porous carbon-based structure (such as activated carbon, carbon nanotubes, or graphene aerogel), a metal-organic framework (MOFs), an inorganic porous oxide structure (mesoporous titanium dioxide, molecular sieves (ZSM-5, 13X), or titanium dioxide aerogel), or a polymeric adsorption structure (i.e., cross-linked polystyrene (XAD resin) or metal-organic gels (MOGs). All of the above reversible adsorption medium layers can achieve reversible desorption through a suitable high temperature.

[0040] Among them, such as Figure 2 and Figure 3 As shown, the switching circuit 400 may include a first switching valve 410 and a second switching valve 420. The first switching valve 410 is connected between the chimney 300 and the first adsorption device 210, and the second switching valve 420 is connected between the chimney 300 and the second adsorption device 220.

[0041] Thus, by controlling the opening and closing states of the first switching valve 410 and the second switching valve 420, the first adsorption device 210 or the second adsorption device 220 in adsorption mode is connected to the chimney 300 through the switching circuit 400, thereby discharging the adsorbed qualified gas through the chimney 300.

[0042] The first switching valve 410 and the second switching valve 420 can be electrically controlled valves. This allows for automated control of the first switching valve 410 and the second switching valve 420 via electronic circuitry. In this way, one of the first adsorption device 210 and the second adsorption device 220 can be flexibly adjusted to the adsorption state via automation.

[0043] The first switching valve 410 and the second switching valve 420 can be two-position three-way valves, or the first switching valve 410 and the second switching valve 420 can be set as independent air valve structures, and there is no limitation on this.

[0044] The desorption circuit 500 is used for the desorption and regeneration of the first adsorption device 210 and the second adsorption device 220. By connecting the desorption circuit 500 to the first adsorption device 210 and the second adsorption device 220, one of the first adsorption devices 210 and the second adsorption device 220 that is not performing adsorption operations can be connected to the desorption circuit 500 for desorption treatment. This separates the volatile organic compounds adsorbed inside the adsorption device and decomposes or reacts them into non-polluting gases or particulate matter through catalysis, high-temperature combustion, or other means. Subsequently, the reacted gases or particulate matter can be discharged through the chimney 300 connected to the desorption circuit 500.

[0045] The main control module 600 is an automation control unit. For example, the main control module 600 can be a PLC (Programmable Logic Controller) to work with the sensor network and coordinate the working status of various components through preset programs.

[0046] During system operation, the main control module 600 sequentially activates the gas supply circuit 100, the first adsorption device 210, and the chimney 300, switching the first adsorption device 210 to adsorption mode. After being purified by the adsorption medium layer within the first adsorption device 210, the waste gas enters the chimney 300 through the switching circuit 400 for emission, achieving purified waste gas emission treatment. Simultaneously, since the second adsorption device 220 adsorbs a large amount of volatile organic compounds (VOCs), the main control module 600 sequentially activates the second adsorption device 220, the desorption circuit 500, and the chimney 300, allowing the second adsorption device 220 to cyclically regulate temperature, humidity, and pressure changes through the desorption circuit 500. This ensures sufficient desorption and separation of VOCs within the second adsorption device 220. Furthermore, the desorption circuit 500 can decompose or react the VOCs through catalysis, high-temperature combustion, or other means to generate pollution-free gases or particulate matter. Finally, the reacted gas or particulate matter can be discharged through the chimney 300 connected to the desorption circuit 500, thereby achieving the cyclic desorption and decomposition purification of volatile organic compounds in the second adsorption device 220. Thus, the first adsorption device 210 and the second adsorption device 220 alternately switch between adsorption and purification modes under the regulation of the main control module 600, allowing the two adsorption devices to alternately perform adsorption and regeneration, thereby achieving continuous automated treatment of waste gas.

[0047] This application's solution utilizes the alternating operation of the first adsorption device 210 and the second adsorption device 220, enabling parallel adsorption and regeneration processes to meet the automated treatment requirements of continuous waste gas. For example, in automotive painting workshops, the original system required a six-hour or longer downtime daily to replace the adsorbent. This system allows for continuous adsorption and purification year-round, eliminating production interruptions caused by adsorbent replacement and meeting continuous production needs. The linkage design between the desorption loop 500 and the first and second adsorption devices 210 replaces the manual disassembly and regeneration process, and the automated switching control via the main control module 600 eliminates the need for operators to contact the saturated adsorbent, significantly reducing health risks. This allows the purification system to operate automatically and stably, automatically switching between adsorption and purification modes, reducing human error.

[0048] The main control module 600 has multiple reference standards when switching between adsorption and purification modes between the first adsorption device 210 and the second adsorption device 220.

[0049] For example, the first rated duration of the adsorption operation can be calculated based on the rated adsorption capacity of the first adsorption device 210 and the second adsorption device 220, the concentration of volatile organic compounds in the waste gas, and the flow rate of the waste gas. The second rated duration of the purification operation can be calculated based on the rated adsorption capacity of the first adsorption device 210 and the second adsorption device 220, and the purification rate of the desorption circuit 500. The main control module 600 can switch to the purification operation after the first adsorption device 210 has run the first adsorption operation for the first duration (the first duration is less than or equal to the first rated duration). Furthermore, the main control module 600 can switch to the adsorption operation after the second adsorption device 220 has run the second purification operation for the second duration (the second duration is greater than or equal to the second rated duration), providing good redundancy.

[0050] Alternatively, the composition of the gas exiting the first adsorption device 210 and the second adsorption device 220 can be monitored. For example... Figure 2 and Figure 3 As shown, the gas supply circuit 100 includes a first gas sensor 140 and a second gas sensor 150. The first gas sensor 140 is disposed on the outlet side of the first adsorption device 210 and is used to collect the concentration information of volatile organic compounds. The second gas sensor 150 is disposed on the outlet side of the second adsorption device 220 and is used to collect the concentration information of volatile organic compounds.

[0051] like Figure 3 As shown, the first gas supply valve 120, the second gas supply valve 130, the first gas sensor 140 and the second gas sensor 150 are electrically connected to the main control module 600 and are used to control the supply of gas to the first adsorption device 210 or the second adsorption device 220.

[0052] The first gas sensor 140 and the second gas sensor 150 are detection devices for detecting volatile organic compounds (VOCs). Specifically, they can be semiconductor sensors, optical sensors, or infrared absorption sensors to monitor the residual concentration of pollutants (i.e., VOCs) in the outlet gas of the first adsorption device 210 and the second adsorption device 220 in real time. The main control module 600 can obtain the exhaust gas status of the first adsorption device 210 and the second adsorption device 220 in real time through the connected first gas sensor 140 and second gas sensor 150.

[0053] Thus, the gas supply circuit 100 can deliver waste gas to the first adsorption device 210 or the second adsorption device 220 through the first gas supply pipeline 110. The first gas supply valve 120 and the second gas supply valve 130 are alternately opened under the control of the main control module 600, so that one adsorption device is in adsorption mode while the other is in purification mode or standby mode. The first gas sensor 140 and the second gas sensor 150 can collect real-time volatile organic compound concentration data at the outlet of the first adsorption device 210 or the second adsorption device 220. When the outlet gas concentration under the current adsorption mode exceeds a preset threshold, the main control module 600 immediately closes the corresponding gas supply valve and opens the other gas supply valve, realizing automatic switching of the adsorption devices.

[0054] For example, when the first adsorption device 210 becomes saturated, causing an increase in the concentration of volatile organic compounds (VOCs) at the outlet, the main control module 600 closes the first gas supply valve 120 and opens the second gas supply valve 130, diverting the waste gas to the second adsorption device 220 for treatment. Simultaneously, this triggers the first adsorption device 210 to enter purification mode. After the first adsorption device 210 has been in purification mode for a specified duration, if the concentration of VOCs at its outlet falls below a preset value, the main control module 600 controls the first adsorption device 210 and the desorption circuit 500 to stop purification and enter standby mode until the first adsorption device 210 is switched back to adsorption mode.

[0055] The gas supply circuit 100 can be further configured with a pressure regulating device, such as a pressure reducing valve in the first gas supply line 110, to maintain a stable gas delivery pressure. The gas sensor can preferably be installed in the central area of ​​the outlet pipe of the adsorption device to avoid detection errors caused by uneven airflow distribution. The main control module 600 can also integrate data storage functionality to record historical concentration data to optimize valve switching logic. This solution uses a first gas sensor 140 and a second gas sensor 150 to monitor concentration parameters in real time, enabling accurate linkage control with the main control module 600. This achieves automated switching of the adsorption device's operating state, allowing for alternating operation between adsorption and purification modes without shutdown. Furthermore, the electric control of the gas supply valve replaces manual operation, significantly reducing the risk of personnel exposure to volatile organic compounds and improving the reliability and safety of the industrial waste gas treatment system.

[0056] In some embodiments, such as Figure 1 and Figure 2As shown, the uninterrupted exhaust gas purification system also includes a first fan 230 and a second fan 240. The first fan 230 is located between the first air supply valve 120 and the first adsorption device 210, and the second fan 240 is located between the second air supply valve 130 and the second adsorption device 220. Alternatively, the first fan 230 can be located downstream of the first adsorption device 210, and the second fan 240 can also be located downstream of the second adsorption device 220. This allows the exhaust gas to flow rapidly from the air supply circuit to either the first adsorption device 210 or the second adsorption device 220, thereby increasing the adsorption and purification speed of the exhaust gas.

[0057] like Figure 2 As shown, the uninterrupted exhaust gas purification system also includes a third fan 250, which is located on the air supply side of the chimney 300. Combined with... Figure 3 The first fan 230, the second fan 240, and the third fan 250 are electrically connected to the main control module 600. Specifically, by configuring the third fan 250, the flow rate of gas within the exhaust gas purification system is further increased, thereby enhancing the adsorption and purification speed of the exhaust gas.

[0058] The connection configuration of the main control module 600 allows for flexible control of the opening and closing of the first fan 230, the second fan 240, and the third fan 250, as well as adjustment of their speeds.

[0059] like Figure 1 and Figure 3 As shown, the desorption circuit 500 includes a combustion furnace 510, a first purification circuit 520, a second purification circuit 530, and an exhaust circuit 540. The combustion furnace 510 is used to purify the adsorbed volatile organic compounds by combustion. The combustion furnace 510 has an exhaust port 511, which is connected to the chimney 300 via the exhaust circuit 540.

[0060] The first adsorption device 210 and the combustion furnace 510 are connected through the first purification circuit 520, and the second adsorption device 220 and the combustion furnace 510 are connected through the second purification circuit 530. In the purification operation, the exhaust circuit 540 is open, and at least one of the first purification circuit 520 and the second purification circuit 530 is open.

[0061] The combustion furnace 510 has a combustion chamber whose internal temperature can be maintained within the high-temperature range required for the decomposition of volatile organic compounds (VOCs), used for purifying VOCs through high-temperature decomposition. The first purification circuit 520 and the second purification circuit 530 are two piping systems connecting the first adsorption device 210 and the second adsorption device 220, to introduce the VOCs desorbed from either the first adsorption device 210 or the second adsorption device 220 during purification into the combustion furnace for high-temperature decomposition. The exhaust circuit 540 is a gas emission channel connecting the combustion furnace 510 and the chimney 300, used to discharge harmless gases after combustion.

[0062] The main control module 600 selects to activate either the first purification circuit 520 or the second purification circuit 530 based on the saturation state of the adsorption device, thereby switching either the first adsorption device 210 or the second adsorption device 220 to the purification mode. For example, if the first adsorption device 210 has reached saturation adsorption, the first purification circuit 520 is activated to connect it to the combustion furnace 510, while the corresponding switching circuit 400 (such as the first switching valve 410) and the gas supply circuit 100 (such as the first gas supply valve 120) are closed. The high-temperature gas generated by the combustion furnace 510 enters the first adsorption device 210 through the first purification circuit 520 (upper section), desorbs the adsorbed volatile organic compounds, and is then transported to the combustion furnace 510 through the first purification circuit 520 (lower section) for complete oxidation and decomposition. The purified gas is then discharged through the exhaust circuit 540 into the chimney 300. During this process, the second adsorption device 220 can continue to perform adsorption, thereby achieving uninterrupted operation of the waste gas treatment.

[0063] This solution sets up a dual purification circuit linked with the combustion furnace 510, allowing the two adsorption devices to alternate between adsorption and purification modes. Regeneration can be completed without shutting down the machine. At the same time, high-temperature combustion is used to achieve the harmless decomposition of organic matter, avoiding the risk of volatile gas leakage and environmental pollution when manually replacing the adsorbent.

[0064] In some embodiments, such as Figure 1 and Figure 2 As shown, the first switching valve 410, the second switching valve 420, and the exhaust circuit 540 are connected in parallel. For example, the first switching valve 410, the second switching valve 420, and the exhaust circuit 540 are connected in parallel upstream of the third fan 250. The first purification circuit 520 is connected in parallel with the first switching valve 410 on the air supply side of the first adsorption device 210, and the second purification circuit 530 is connected in parallel with the second switching valve 420 on the air supply side of the second adsorption device 220.

[0065] When the main control module 600 controls the first adsorption device 210 to be in adsorption mode, the first switching valve 410 opens to allow the purified gas to be discharged through the chimney 300, while the second switching valve 420 closes to isolate the second adsorption device 220. At this time, the second adsorption device 220 enters desorption mode, and the volatile organic compounds adsorbed inside it enter the combustion furnace 510 for processing through the second purification circuit 530. The exhaust gas generated by combustion is discharged into the chimney 300 through the exhaust circuit 540. The main control module 600 switches the opening and closing states of the first switching valve 410 and the second switching valve 420 in real time, so that the two first adsorption devices 210 and the second adsorption device 220 alternately perform adsorption mode and purification mode. For example, when the first adsorption device 210 is detected to be saturated, the first switching valve 410 is immediately closed and the second switching valve 420 is opened, and the second adsorption device 220 is started to perform purification mode.

[0066] It should be noted that the first purification circuit 520 and the second purification circuit 530 can be unidirectional circuits, as shown above. For example, high-pressure gas can be blown into the upstream port of the first adsorption device 210 to cause the volatile organic compounds inside the first adsorption device 210 to precipitate and flow through the first purification circuit 520 to the combustion furnace 510 for high-temperature decomposition and purification.

[0067] Alternatively, the first purification circuit 520 and the second purification circuit 530 can also be a circulating circuit. For example... Figure 2 As shown, the first purification circuit 520 is connected to the second air inlet 513 of the combustion furnace 510 at the outlet end of the combustion furnace 510 to guide the volatile organic compounds desorbed in the first adsorption device 210 to the combustion furnace 510. The second purification circuit 530 is connected in parallel with the first purification circuit 520 at the second air inlet 513 to guide the volatile organic compounds desorbed in the second adsorption device 220 to the combustion furnace 510. At this time, another part of the first purification circuit 520 is connected between the upstream port of the first adsorption device 210 and the exhaust port 511. The first fan 230 is also connected between the first adsorption device 210 and the first purification circuit 520.

[0068] Another part of the second purification circuit 530 is connected between the upstream port of the second adsorption device 220 and the exhaust port 511. The second fan 240 is also connected between the second adsorption device 220 and the second purification circuit 530.

[0069] This allows the high-temperature exhaust gas from combustion in the combustion furnace 510 to be guided through the exhaust port 511 and the first purification circuit 520 into the first adsorption device 210 under purification conditions. The high-temperature gas causes the volatile organic compounds in the first adsorption device 210 to be rapidly desorbed. The desorbed volatile organic compounds are then introduced into the combustion furnace 510 through the first purification circuit 520 and the second air inlet 513 for decomposition and purification, thereby achieving rapid desorption and purification of the first adsorption device 210.

[0070] Correspondingly, the high-temperature exhaust gas after combustion in the combustion furnace 510 can be guided through the exhaust port 511 and the second purification circuit 530 into the second adsorption device 220 under purification conditions, so that the volatile organic compounds in the second adsorption device 220 can be rapidly desorbed by the high-temperature gas, and the desorbed volatile organic compounds are introduced into the combustion furnace 510 through the second purification circuit 530 and the second air inlet 513 for decomposition and purification, so as to achieve rapid desorption and purification of the second adsorption device 220.

[0071] Specifically, such as Figure 1 and Figure 3 As shown, the desorption circuit 500 includes an air supply device 550, a first desorption valve 541, and a second desorption valve 561.

[0072] The gas supply device 550 is connected to the first air inlet 512 of the combustion furnace 510. The first desorption valve 541 is provided in the exhaust circuit 540. The first desorption valve 541 can be regarded as part of the exhaust circuit 540 and is used to control the opening and closing of the exhaust circuit 540.

[0073] The gas supply device 550 can be a fan structure, used to blow sufficient air and combustible gas into the combustion furnace 510 for combustion, and drive the high-temperature exhaust gas through the first purification circuit 520 or the second purification circuit 530 to desorb the volatile organic compounds in the first adsorption device 210 or the second adsorption device 220 at high temperature.

[0074] The first desorption valve 541 and the second desorption valve 561 are connected in parallel to the exhaust port 511 of the combustion furnace 510, and the first purification circuit 520 and the second purification circuit 530 are connected in parallel to the second desorption valve 561. Either the first desorption valve 541 or the second desorption valve 561 may be opened, or both may be opened simultaneously.

[0075] The high-temperature exhaust gas from the combustion furnace 510 is either discharged through the chimney 300 or desorbed at high temperature through the first adsorption device 210 or the second adsorption device 220. The first desorption valve 541 and the second desorption valve 561 are configured in a linked manner.

[0076] When the first desorption valve 541 is closed and the second desorption valve 561 is open, all the exhaust gas from the combustion furnace 510 undergoes high-temperature desorption via the first adsorption device 210 or the second adsorption device 220. When the first desorption valve 541 is open and the second desorption valve 561 is closed, all the exhaust gas from the combustion furnace 510 is discharged through the chimney 300. When both the first desorption valve 541 and the second desorption valve 561 are open simultaneously, part of the exhaust gas from the combustion furnace 510 undergoes high-temperature desorption via the first adsorption device 210 or the second adsorption device 220, and the other part is discharged through the chimney 300.

[0077] Thus, by associating the opening degrees of the first desorption valve 541 and the second desorption valve 561, the operation control logic and operation of the first desorption valve 541 and the second desorption valve 561 can be simplified.

[0078] For example, the first desorption valve 541 and the second desorption valve 561 can be configured as a linkage valve structure with corresponding opening degrees, and the sum of the opening degrees of the first desorption valve 541 and the second desorption valve 561 is 100%.

[0079] Based on this, the gas supply device 550, the first desorption valve 541, and the second desorption valve 561 are electrically connected to the main control module 600. When adjusting the opening degree of the first desorption valve 541 and the second desorption valve 561, only one command needs to be issued to simultaneously meet the opening degree adjustment requirements of the first desorption valve 541 and the second desorption valve 561.

[0080] A linkage valve structure refers to a structure that rigidly connects the opening adjustment mechanisms of two valves through a mechanical linkage device, so that the opening changes of the two valves are synchronous and in opposite directions. Specifically, a gear set, crank-connecting rod, or cam mechanism can be used to achieve linkage. For example, gear meshing causes the two valve stems to rotate in opposite directions, thereby increasing the opening of one valve while decreasing the opening of the other valve.

[0081] The sum of the opening degrees being 100% means that the sum of the flow cross-sectional areas of the two valves is always equal to the flow cross-sectional area of ​​a single valve when it is fully open. This allows for flexible adjustment of the exhaust gas flow rate within the purification circuit and the exhaust circuit 540 without affecting the smooth flow of exhaust gas in the circuit. Specifically, this can be achieved by adjusting the valve core shape or stroke limiting device, such as using a conical valve core with linear stroke control to ensure that the sum of the opening degrees of the two valves remains constant. This linked adjustment method avoids system pressure fluctuations caused by sudden changes in valve opening degree, while ensuring stable exhaust temperature from the combustion furnace.

[0082] This solution utilizes a mechanically linked linkage valve structure to forcibly achieve complementary valve openings. The rigid linkage mechanism between the two valves ensures dynamic pressure balance in the system, preventing adsorbent laminarization or activated carbon particle escape caused by sudden pressure changes, thus maintaining stable purification efficiency. Furthermore, it fundamentally eliminates the risk of pressure fluctuations during adjustment and simplifies the control system's operational logic. In addition, the mechanically linked design reduces the probability of control valve failure, improving the reliability of continuous system operation.

[0083] In some embodiments, such as Figure 1 and Figure 3 As shown, the desorption circuit 500 includes a third desorption valve 521, a fourth desorption valve 522, a fifth desorption valve 531, and a sixth desorption valve 532.

[0084] The third desorption valve 521 and the fourth desorption valve 522 are disposed in the first purification circuit 520 and can be regarded as part of the first purification circuit 520. The second desorption valve 561 is connected to the gas supply side of the first adsorption device 210 via the third desorption valve 521, and the gas outlet side of the first adsorption device 210 is connected to the second gas inlet 513 of the combustion furnace 510 via the fourth desorption valve 522.

[0085] The fifth desorption valve 531 and the sixth desorption valve 532 are located in the second purification circuit 530 and can be considered as part of the second purification circuit 530. The second desorption valve 561 is connected to the gas supply side of the second adsorption device 220 via the fifth desorption valve 531, and the gas outlet side of the second adsorption device 220 is connected to the second gas inlet of the combustion furnace 510 via the sixth desorption valve 532.

[0086] When the second adsorption device 220 enters the purification mode, the main control module 600 controls the fifth desorption valve 531 and the sixth desorption valve 532 to open, allowing the volatile organic compound gas adsorbed inside the second adsorption device 220 to enter the combustion furnace 510 through the second purification circuit 530. After the combustion furnace 510 performs high-temperature oxidation treatment on the gas, the purified gas enters the chimney 300 for discharge through the exhaust circuit 540.

[0087] When the first adsorption device 210 enters the purification mode, the main control module 600 controls the third desorption valve 521 and the fourth desorption valve 522 to open, so that the volatile organic compound gas adsorbed inside the first adsorption device 210 enters the combustion furnace 510 through the first purification circuit 520. After the combustion furnace 510 performs high-temperature oxidation treatment on the gas, the purified gas enters the chimney 300 for discharge through the exhaust circuit 540.

[0088] Thus, by installing a third desorption valve 521, a fourth desorption valve 522, a fifth desorption valve 531, and a sixth desorption valve 532 within the first purification circuit 520 and the second purification circuit 530, these valves can be electrically connected to the main control module 600 to achieve flexible and convenient control of the first purification circuit 520 and the second purification circuit 530. Manual operation is possible, or automated control can be achieved through the main control module 600.

[0089] like Figure 2 and Figure 3 As shown, the desorption circuit 500 includes a flow sensor 562, a temperature sensor 563, and a third air supply valve 564. The third air supply valve 564, the flow sensor 562, and the temperature sensor 563 are electrically connected to the main control module 600.

[0090] A flow sensor 562 is located on the side of the second desorption valve 561 away from the combustion furnace 510, and is used to detect the flow rate of the first purification circuit 520 and the second purification circuit 530. A temperature sensor 563 is installed at the exhaust port 511 of the combustion furnace 510 to detect the exhaust temperature. A third air supply valve 564 is connected in parallel to the second desorption valve 561 on the side closer to the combustion furnace 510, and is used to supply external air to the first purification circuit 520 and the second purification circuit 530.

[0091] Flow sensor 562 refers to a device used for real-time monitoring of gas flow rate. It can be an electromagnetic flow meter or an ultrasonic flow meter, used to determine the operating status of the purification circuit by measuring changes in gas velocity within the pipeline. Temperature sensor 563 refers to a device used to detect the temperature parameters of the exhaust gas after combustion. It can be implemented using a thermocouple or an infrared temperature measurement module, and it assesses combustion purification efficiency by monitoring changes in exhaust temperature. Third air supply valve 564 refers to a control component used to supplement auxiliary airflow. It can be implemented using an electric regulating valve or a pneumatic butterfly valve, and it injects fresh air or inert gas into the purification circuit as needed through a parallel pipeline structure to regulate the circuit temperature.

[0092] During purification operation, flow sensor 562 collects flow data from the first purification loop 520 or the second purification loop 530 in real time. The main control module 600 dynamically adjusts the opening of the second desorption valve 561 based on the flow data to balance gas distribution. Temperature sensor 563 continuously monitors the exhaust temperature of the combustion furnace 510 to control the desorption efficiency of volatile organic compounds and maintain the stability and safety of the loop operation. When the third air supply valve 564 is open, it can introduce external low-temperature air into the loop to maintain the stability and safety of the loop operation.

[0093] This solution, through the combined application of flow sensor 562 and temperature sensor 563, and the dynamic adjustment function of the third gas supply valve 564, realizes closed-loop control of gas flow regulation and monitoring in the purification circuit, effectively solving the combustion efficiency fluctuation problem existing in traditional systems.

[0094] In this embodiment, the gas supply device 550, the first desorption valve 541, the second desorption valve 561, the third desorption valve 521, the fourth desorption valve 522, the fifth desorption valve 531, the sixth desorption valve 532, the third gas supply valve 564, the flow sensor 562, and the temperature sensor 563 are electrically connected to the main control module 600. Some of these components may be electrically connected to the main control module 600 to meet the system's automated control requirements. Alternatively, all of these components may be electrically connected to the main control module 600, enabling the waste gas purification system to flexibly and accurately control the conduction and closure states of each branch in the gas supply circuit 100, the switching circuit 400, and the desorption circuit 500, thereby achieving stable and safe uninterrupted operation of waste gas adsorption and purification.

[0095] Therefore, when using the aforementioned uninterrupted waste gas purification system to adsorb and purify industrial waste gas, neither the first adsorption device 210 nor the second adsorption device 220 adsorbs volatile organic compounds in the initial stage. For example... Figure 1 and Figure 6As shown, the uninterrupted exhaust gas purification system first performs single-tower adsorption operation through the first adsorption device 210. The first air supply valve 120 and the first switching valve 410 are opened to allow the first adsorption device 210 to receive exhaust gas and perform adsorption operation. At this time, the first fan 230 and the third fan 250 remain running to allow the exhaust gas to flow rapidly between the first air supply pipe 110 and the chimney 300 and be adsorbed and purified, and then the purified air is discharged from the chimney 300.

[0096] When the first gas sensor 140 detects a high content of volatile organic compounds in the gas flowing out of the first adsorption device 210, such as... Figure 2 As shown, the second fan 240 starts, the second air supply valve 130, the second switching valve 420, and the sixth desorption valve 532 open, the first desorption valve 541 opens and the second desorption valve 561 closes, the first air supply valve 120 and the first switching valve 410 close, and the air supply device 550 starts to blow air into the combustion furnace 510 and supplies gas to the combustion furnace 510 through the gas pipeline to preheat the combustion furnace 510. At this time, the exhaust gas is adsorbed and purified by the second adsorption device 220 through the first air supply pipe 110, and part of the purified exhaust gas is discharged through the second switching valve 420 and the chimney 300. The other part of the purified exhaust gas enters the combustion furnace 510 for preheating through the sixth desorption valve 532, and is discharged through the chimney 300 through the first desorption valve 541 and the exhaust circuit 540 until the combustion furnace 510 reaches the set temperature, that is, the temperature at which VOCs can be fully burned.

[0097] Subsequently, as Figure 4 and Figure 7 As shown, the third desorption valve 521, the third air supply valve 564, the fourth desorption valve 522, and the second switching valve 420 are open, while the sixth desorption valve 532 is closed (as shown). Figure 1(As shown). The opening of the second desorption valve 561 is partially opened according to the flow sensor 562. The flow sensor 562 is set according to the air volume required for the second adsorption device 220 to desorb volatile organic compounds. The opening of the third air supply valve 564 is adjusted according to the temperature sensor 563. The opening will be larger when the temperature is high and smaller when the temperature is low. The temperature of the temperature sensor 563 is set according to the temperature required for the removal of volatile organic compounds in the first adsorption device 210. At this time, the system enters the simultaneous adsorption and desorption process. The waste gas flows through the second adsorption device 220 and is purified by adsorption. The purified waste gas is discharged through the second switching valve 420 and the chimney 300. Simultaneously, the volatile organic compounds desorbed in the first adsorption device 210 enter the combustion furnace 510 for heating and decomposition purification. A portion of the volatile organic compounds flows back into the first adsorption device 210 through the first purification circuit 520 and is driven by the first fan 230, so that the volatile organic compounds absorbed in the first desorption device 210 are desorbed by the high-temperature airflow. The other portion passes through the first desorption valve 541 and the exhaust circuit 540 and enters the chimney 300 for discharge. This continues until the first gas sensor 140 detects that the concentration of volatile organic compounds has reached a low parameter. At this time, the system is in the first state where the first adsorption device 210 is desorbing and the second adsorption device 220 is adsorbing and purifying.

[0098] After the first adsorption device 210 completes its purification and desorption process, the combustion furnace 510 and the gas supply device 550 are shut down, and the third gas supply valve 564 is fully opened to allow the combustion furnace 510 and the first adsorption device 210 to cool down rapidly. When the temperature of the combustion furnace 510 and the first adsorption device 210 drops to the target range, the third desorption valve 521, the fourth desorption valve 522, and the third gas supply valve 564 are closed, and the first fan 230 and the first desorption valve 541 are shut down. The first adsorption device 210 enters standby mode until the second adsorption device 220 reaches saturation adsorption, after which the first adsorption device 210 returns to adsorption mode. This process continues until the second adsorption device 220 is in standby mode and the first adsorption device 210, in conjunction with the combustion furnace 510, has completed preheating. Figure 5 As shown, the system enters a second state, in which the first adsorption device 210 continues to adsorb and purify the waste gas, and the second adsorption device 220 cooperates with the combustion furnace 510 to perform purification and desorption operations, thereby realizing the automated treatment of continuous waste gas.

[0099] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0100] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0101] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A continuous exhaust gas purification system, characterized in that, It includes a gas supply circuit (100), a first adsorption device (210), a second adsorption device (220), a chimney (300), a switching circuit (400), a desorption circuit (500), and a main control module (600). The gas supply circuit (100) is used to supply gas to the first adsorption device (210) or the second adsorption device (220), and the first adsorption device (210) and the second adsorption device (220) are used to adsorb volatile organic compounds; The switching circuit (400) is connected to the first adsorption device (210), the second adsorption device (220) and the chimney (300), and the desorption circuit (500) is connected to the first adsorption device (210), the second adsorption device (220) and the chimney (300); The main control module (600) is connected to the gas supply circuit (100), the switching circuit (400) and the desorption circuit (500), and the main control module (600) has automatically controlled adsorption and purification modes. Under the adsorption conditions, the first adsorption device (210) or the second adsorption device (220) adsorbs volatile organic compounds and discharges the purified gas through the chimney (300). In the purification process, the adsorbed volatile organic compounds in the first adsorption device (210) and the second adsorption device (220) that are not adsorbed are purified by the desorption circuit (500), and the purified gas is discharged through the chimney (300).

2. The uninterrupted exhaust gas purification system according to claim 1, characterized in that, The desorption circuit (500) includes: Combustion furnace (510) is used to purify adsorbed volatile organic compounds by combustion; The first purification circuit (520) connects the first adsorption device (210) and the combustion furnace (510). The second purification circuit (530) connects the second adsorption device (220) and the combustion furnace (510). And an exhaust circuit (540), wherein the combustion furnace (510) has an exhaust port (511) which is connected to the chimney (300) via the exhaust circuit (540); During the purification process, the exhaust circuit (540) is activated, and at least one of the first purification circuit (520) and the second purification circuit (530) is activated.

3. The uninterrupted exhaust gas purification system according to claim 2, characterized in that, The desorption circuit (500) includes: A gas supply device (550) is connected to the first air inlet (512) of the combustion furnace (510); A first desorption valve (541) is disposed in the exhaust circuit (540) for controlling the opening and closing of the exhaust circuit (540); And a second desorption valve (561), the first desorption valve (541) and the second desorption valve (561) are connected in parallel to the exhaust port (511) of the combustion furnace (510), and the first purification circuit (520) and the second purification circuit (530) are connected in parallel to the second desorption valve (561). The first desorption valve (541) and the second desorption valve (561) may be opened selectively; or the first desorption valve (541) and the second desorption valve (561) may be opened simultaneously.

4. The uninterrupted exhaust gas purification system according to claim 3, characterized in that, The first desorption valve (541) and the second desorption valve (561) are rod valve structures with corresponding opening degrees, and the sum of the opening degrees of the first desorption valve (541) and the second desorption valve (561) is 100%.

5. The uninterrupted exhaust gas purification system according to claim 3, characterized in that, The desorption circuit (500) includes a third desorption valve (521), a fourth desorption valve (522), a fifth desorption valve (531), and a sixth desorption valve (532). The third desorption valve (521) and the fourth desorption valve (522) are disposed in the first purification circuit (520). The second desorption valve (561) is connected to the gas supply side of the first adsorption device (210) via the third desorption valve (521). The gas outlet side of the first adsorption device (210) is connected to the second air inlet (513) of the combustion furnace (510) via the fourth desorption valve (522). The fifth desorption valve (531) and the sixth desorption valve (532) are disposed in the second purification circuit (530). The second desorption valve (561) is connected to the gas supply side of the second adsorption device (220) via the fifth desorption valve (531). The gas outlet side of the second adsorption device (220) is connected to the second gas inlet of the combustion furnace (510) via the sixth desorption valve (532).

6. The uninterrupted exhaust gas purification system according to claim 5, characterized in that, The desorption circuit (500) includes: A flow sensor (562) is disposed on the side of the second desorption valve (561) away from the combustion furnace (510) for detecting the flow rates of the first purification circuit (520) and the second purification circuit (530); Temperature sensor (563) is provided at the exhaust port (511) of the combustion furnace (510) to detect the exhaust temperature; And a third gas supply valve (564), which is connected in parallel to the second desorption valve (561) on the side near the combustion furnace (510) for supplying external gas to the first purification circuit (520) and the second purification circuit (530).

7. The uninterrupted waste gas purification system according to claim 6, characterized in that, The gas supply device (550), the first desorption valve (541), the second desorption valve (561), the third desorption valve (521), the fourth desorption valve (522), the fifth desorption valve (531), the sixth desorption valve (532), the third gas supply valve (564), the flow sensor (562), and the temperature sensor (563) are electrically connected to the main control module (600).

8. The uninterrupted exhaust gas purification system according to any one of claims 2-7, characterized in that, The switching circuit (400) includes a first switching valve (410) and a second switching valve (420). The first switching valve (410) is connected between the chimney (300) and the first adsorption device (210), and the second switching valve (420) is connected between the chimney (300) and the second adsorption device (220). The first switching valve (410), the second switching valve (420), and the exhaust circuit (540) are arranged in parallel; The first purification circuit (520) is connected in parallel with the first switching valve (410) on the gas supply side of the first adsorption device (210), and the second purification circuit (530) is connected in parallel with the second switching valve (420) on the gas supply side of the second adsorption device (220). The first switching valve (410) and the second switching valve (420) are electrically connected to the main control module (600).

9. The uninterrupted exhaust gas purification system according to any one of claims 1-7, characterized in that, The gas supply circuit (100) includes: First gas supply line (110); The first gas supply valve (120) is connected to the first adsorption device (210) via the first gas supply pipe (110); The second air supply valve (130) is connected to the second adsorption device (220) via the first air supply pipeline (110); The first gas sensor (140) is disposed on the outlet side of the first adsorption device (210) and is used to collect the concentration information of volatile organic compounds. And a second gas sensor (150); the second gas sensor (150) is disposed on the outlet side of the second adsorption device (220) and is used to collect the concentration information of volatile organic compounds; The first gas supply valve (120), the second gas supply valve (130), the first gas sensor (140), and the second gas sensor (150) are electrically connected to the main control module (600) and are used to control the supply of gas to the first adsorption device (210) or the second adsorption device (220).

10. The uninterrupted exhaust gas purification system according to claim 9, characterized in that, The uninterrupted exhaust gas purification system also includes: The first fan (230) is disposed between the first air supply valve (120) and the first adsorption device (210); The second fan (240) is disposed between the second air supply valve (130) and the second adsorption device (220); and a third fan (250), which is located on the air supply side of the chimney (300); The first fan (230), the second fan (240) and the third fan (250) are electrically connected to the main control module (600).

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