Setting regeneration cold field and safe thermal field combined waste gas treatment system

Abstract

The utility model discloses a set regeneration cold field and safe thermal field combined waste gas treatment system. Belongs to the technical field of waste gas treatment equipment. The VOCs waste gas treatment device solves the problems of high initial investment, high energy consumption and the like of a device for treating VOCs waste gas with unstable concentration, maximum concentration of more than 100PPM and / or discontinuous waste gas emission in the prior art. Comprising a setting regeneration cold field adsorption catalyst waste gas treatment device, a safe thermal field reaction catalyst waste gas treatment device, an intelligent control cabinet, an exhaust funnel, a waste gas main pipeline, a first waste gas branch pipeline and a second waste gas branch pipeline, a first switch valve, a first flow sensor, a first VOCs organic gas concentration sensor, a pressure sensor and a temperature sensor are arranged on the waste gas main pipeline. The problem of waste of electric heating power consumption caused by independent use of a safe thermal field reaction catalyst waste gas treatment device is solved.

Description

Technical Field

[0001] This utility model relates to a combined waste gas treatment system with a regeneration cold field and a safety hot field, belonging to the technical field of waste gas treatment equipment. Background Technology

[0002] For VOCs waste gas generated in laboratories, production facilities, hazardous waste storage facilities, etc., the commonly used waste gas treatment technologies are the on-site regeneration cold field adsorption catalyst technology and the safe thermal field reaction catalyst technology, among which:

[0003] "Position-based regeneration cold field adsorption catalyst technology": This refers to a process where, when the waste gas treatment efficiency is detected to be below 60%, a regeneration command is triggered (i.e., the concept of "positioning to 1"). The controller automatically activates the light source module. The photocatalyst, acting as the nucleus within the position-based regeneration cold field adsorption catalyst particles, generates active oxygen groups after being excited by the light from the light source module. These high-energy active oxygen groups diffuse into the shell layer and can directly oxidize the adsorbed VOCs, achieving position-based regeneration of the adsorption performance of the shell layer mesoporous adsorption material and restoring the filtration performance of the position-based regeneration cold field adsorption catalyst. The regeneration temperature is below 50℃.

[0004] "Safe thermal field reaction catalyst technology" refers to filling the interior of a safe thermal field reaction catalyst. When VOCs-containing waste gas enters the safe thermal field reaction catalyst, the catalyst reduces the activation energy of the waste gas, causing a large number of reaction molecules to accumulate on the surface, lowering the ignition point of the gas, and allowing the waste gas to undergo flameless combustion under low temperature conditions. The VOCs in the waste gas can be completely oxidized into CO2 and H2O molecules, thereby purifying the waste gas.

[0005] Safe thermal field reaction refers to a reaction process in which there is no open flame combustion, ensuring good safety.

[0006] For VOCs waste gas generated from laboratories, production facilities, hazardous waste storage facilities, etc., when the waste gas concentration is less than 100 PPM, the in-situ regeneration cold field adsorption catalyst technology is generally used for treatment; when the waste gas concentration is greater than 100 PPM, the safe hot field reaction catalyst technology is generally used for treatment; however, when the waste gas concentration fluctuates and the maximum concentration is greater than 100 PPM (for example, when the waste gas concentration fluctuates between 0 and 800 PPM), or when the waste gas emission is discontinuous and sometimes there is no emission, it is difficult to treat the waste gas using any single technology.

[0007] Most existing laboratories and production facilities emit waste gas with unstable concentrations, sometimes exceeding 100 PPM, and the emissions are discontinuous. For this type of waste gas, due to concentrations exceeding 100 PPM, using a single technology for treatment with a regenerated cold-field adsorption catalyst is unreasonable and uneconomical due to limitations such as project investment costs, equipment footprint, subsequent operation and maintenance costs, and adsorbent replacement costs. Existing technologies for treating waste gas with unstable concentrations exceeding 100 PPM and / or discontinuous emissions generally employ safe thermal field reaction catalyst technology. The waste gas treatment system using this technology is called a safe thermal field reaction catalyst waste gas treatment system, which includes an electric heater, a heat recovery heat exchanger, a safe thermal field reaction catalyst, a control cabinet, various sensors, various regulating valves, and piping systems.

[0008] Compared with other types of combustion methods, safe thermal field reaction catalyst technology has the following characteristics: flameless combustion, resulting in high safety; low required reaction temperature, with most hydrocarbons and CO reacting between 280 and 350°C; it can fully combust low-concentration VOCs that cannot be treated by direct combustion, without the need for continuous application of large amounts of auxiliary heat; the power consumed for preheating during the reaction is only 40% to 60% of that used in direct combustion, thus saving a significant amount of energy and reducing operating costs compared to direct combustion; fewer restrictions on the concentration and calorific value of combustible components; and a lower reaction temperature than direct combustion, resulting in less NOx generation during the reaction.

[0009] However, this approach has the following problems:

[0010] (1) The initial investment for waste gas treatment devices using safe thermal field reaction catalyst technology is very high;

[0011] (2) The waste gas treatment device using safe thermal field reaction catalyst technology has high energy consumption. The catalytic combustion device needs to heat the waste gas to 260-350°C before the waste gas can be burned, which is very energy-intensive.

[0012] (3) Because it takes at least half an hour to heat the waste gas to the reaction temperature, and because the waste gas emission is discontinuous, even if there is no waste gas emission during a certain period, the electric heater of the waste gas treatment device using the safe thermal field reaction catalyst technology needs to be turned on all day to prevent the waste gas from being discharged without treatment. The energy consumption during this period is very high.

[0013] (4) Waste gas treatment devices using safe thermal field reaction catalyst technology have a large footprint.

[0014] (5) When the exhaust gas concentration is less than 100PPM, the heat generated during flameless combustion is small due to the low exhaust gas concentration, and a large amount of electric heating is required. The energy consumption of the safe thermal field reaction catalyst technology is very high.

[0015] (6) Safety thermal field reaction catalyst technology produces a small amount of NOx during flameless combustion, which increases the environmental burden;

[0016] (7) The single-use safety thermal field reaction catalyst technology has no emergency backup facilities in case of emergency (such as catalyst poisoning).

[0017] Therefore, for exhaust gas with fluctuating concentrations and a maximum concentration greater than 100 PPM, and with intermittent and intermittent emissions, how to reduce initial investment and operating and maintenance costs is a major problem that urgently needs to be solved. Utility Model Content

[0018] The present invention aims to solve the above-mentioned technical problems and provide a combined exhaust gas treatment system with a regeneration cold field and a safety hot field.

[0019] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0020] A combined regeneration cold field and safety hot field exhaust gas treatment system includes a regeneration cold field adsorption catalyst exhaust gas treatment device, a safety hot field reaction catalyst exhaust gas treatment device, an intelligent control cabinet, an exhaust stack, a main exhaust gas pipeline, a first exhaust gas branch pipeline, and a second exhaust gas branch pipeline. The regeneration cold field adsorption catalyst exhaust gas treatment device is connected to the first exhaust gas branch pipeline, and the safety hot field reaction catalyst exhaust gas treatment device is connected to the second exhaust gas branch pipeline. The inlet ends of both exhaust gas branch pipelines are connected and fixedly connected to the outlet end of the main exhaust gas pipeline, and the outlet ends of both exhaust gas branch pipelines are connected to the exhaust stack. A first switch is installed on the main exhaust gas pipeline. The system includes a valve, a first flow sensor, a first VOCs organic gas concentration sensor, a pressure sensor, and a temperature sensor. A second flow sensor and a first electric regulating valve are installed on the first waste gas branch pipe located on the inlet side of the regeneration cold field adsorption catalyst waste gas treatment device. A third flow sensor and a second electric regulating valve are installed on the second waste gas branch pipe located on the inlet side of the safety hot field reaction catalyst waste gas treatment device. All three flow sensors (first, second, and third), the first VOCs organic gas concentration sensor, the pressure sensor, the temperature sensor, the first electric regulating valve, and the second electric regulating valve) are connected to the intelligent control cabinet.

[0021] Furthermore, a dust collector is also installed on the main exhaust gas pipeline. The first switch valve is located on the inlet side of the dust collector, and the first flow sensor, the first VOCs organic gas concentration sensor, the pressure sensor, and the temperature sensor are all located on the outlet side of the dust collector.

[0022] Furthermore, a first flame arrester is also installed on the main exhaust gas duct.

[0023] Furthermore, a bypass pipe is connected to the main exhaust gas pipeline, and a second switching valve is installed on the bypass pipe. The first switching valve and the second switching valve are connected in parallel.

[0024] Furthermore, a sensor group is formed by a first flow sensor, a first VOCs organic gas concentration sensor, a pressure sensor, and a temperature sensor, and the outlet end of the bypass pipe is connected to the main exhaust gas pipe between the sensor group and the dust collector.

[0025] Furthermore, a second VOCs organic gas concentration sensor is installed on the first exhaust gas branch pipe on the outlet side of the regeneration cold field adsorption catalyst exhaust gas treatment device, and a third VOCs organic gas concentration sensor is installed on the second exhaust gas branch pipe on the outlet side of the safety hot field reaction catalyst exhaust gas treatment device.

[0026] Furthermore, a first check valve is installed on the first exhaust gas branch pipe on the outlet side of the regeneration cold field adsorption catalyst exhaust gas treatment device, and a second check valve is installed on the second exhaust gas branch pipe on the outlet side of the safety hot field reaction catalyst exhaust gas treatment device.

[0027] Furthermore, the outlet ends of both exhaust branch pipes are connected to the exhaust stack via a main pipe.

[0028] Furthermore, a second flame arrester is installed on the main pipeline.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] Compared with the safe hot field reaction catalyst exhaust gas treatment device, the stationary regeneration cold field adsorption catalyst exhaust gas treatment device has very low energy consumption during operation. Moreover, the initial investment of the stationary regeneration cold field adsorption catalyst exhaust gas treatment device is about half that of the safe hot field reaction catalyst exhaust gas treatment device. The stationary regeneration cold field adsorption catalyst exhaust gas treatment device occupies less space and does not generate NOx during the exhaust gas treatment process. This invention integrates a single waste gas treatment system with both a regenerable cold-field adsorption catalyst waste gas treatment device and a safe thermal-field reaction catalyst waste gas treatment device. Through an intelligent control cabinet and various sensors, the system can select between the regenerable cold-field adsorption catalyst waste gas treatment device and the safe thermal-field reaction catalyst waste gas treatment device, or both, based on the continuity of waste gas emissions, waste gas temperature, and / or waste gas concentration. This significantly reduces initial investment, energy consumption, and overall footprint of the waste gas treatment system, while also producing less NOx compared to a single safe thermal-field reaction catalyst waste gas treatment device. When waste gas emissions are discontinuous and / or the waste gas concentration is below 100 PPM, the regenerable cold-field adsorption catalyst waste gas treatment device is prioritized, resulting in very low energy consumption and significant energy savings. This solves the problem of wasted electric heating power when using a single safe thermal-field reaction catalyst waste gas treatment device.

[0031] The combined application of a regenerated cold field adsorption catalyst exhaust gas treatment device and a safe hot field reaction catalyst exhaust gas treatment device provides higher reliability for emergency backup. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] In the picture:

[0034] 1. Positioned regeneration cold field adsorption catalyst exhaust gas treatment device; 2. Safe hot field reaction catalyst exhaust gas treatment device; 3. Intelligent control cabinet; 4. Exhaust stack; 5. Main exhaust gas pipeline; 6. First exhaust gas branch pipeline; 7. Second exhaust gas branch pipeline; 8. First switching valve; 9. First flow sensor; 10. First VOCs organic gas concentration sensor; 11. Pressure sensor; 12. Temperature sensor; 13. Second flow sensor; 14. First electric regulating valve; 15. Third flow sensor; 16. Second electric regulating valve; 17. Dust collector; 18. First flame arrester; 19. Bypass pipeline; 20. Second switching valve; 21. Second VOCs organic gas concentration sensor; 22. Third VOCs organic gas concentration sensor; 23. First check valve; 24. Second check valve; 25. Main pipeline; 26. Second flame arrester. Detailed Implementation

[0035] Specific implementation method one: Combining Figure 1 This description aims to clearly and completely describe the technical solutions in this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that the descriptions of "front," "rear," "left," "right," "inner," "outer," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this utility model are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] A combined regeneration cold field and safety hot field exhaust gas treatment system includes a regeneration cold field adsorption catalyst exhaust gas treatment device 1, a safety hot field reaction catalyst exhaust gas treatment device 2, an intelligent control cabinet 3, an exhaust stack 4, a main exhaust gas pipeline 5, a first exhaust gas branch pipeline 6, and a second exhaust gas branch pipeline 7. The regeneration cold field adsorption catalyst exhaust gas treatment device 1 is connected to the first exhaust gas branch pipeline 6, and the safety hot field reaction catalyst exhaust gas treatment device 2 is connected to the second exhaust gas branch pipeline 7. The inlet ends of both exhaust gas branch pipelines are connected and fixedly connected to the outlet ends of the main exhaust gas pipeline 5, and the outlet ends of both exhaust gas branch pipelines are connected to the exhaust stack 4. A first switching valve 8 and a first flow sensor 9 are installed on the main exhaust gas pipeline 5. The system includes a first VOCs organic gas concentration sensor 10, a pressure sensor 11, and a temperature sensor 12. A second flow sensor 13 and a first electric regulating valve 14 are installed on the first exhaust gas branch pipe 6 located on the inlet side of the regeneration cold field adsorption catalyst exhaust gas treatment device 1. A third flow sensor 15 and a second electric regulating valve 16 are installed on the second exhaust gas branch pipe 7 located on the inlet side of the safety hot field reaction catalyst exhaust gas treatment device 2. The first flow sensor 9, the second flow sensor 13, the third flow sensor 15, the first VOCs organic gas concentration sensor 10, the pressure sensor 11, the temperature sensor 12, the first electric regulating valve 14, and the second electric regulating valve 16 are all connected to the intelligent control cabinet 3.

[0039] The waste gas treatment device 1, which is a waste gas treatment system that uses the technology of regenerating cold field adsorption catalyst, and the waste gas treatment device 2, which is a waste gas treatment system that uses the technology of safe hot field reaction catalyst, are both existing technologies and will not be described in detail here.

[0040] The first flow sensor 9 is used to monitor the incoming gas flow rate; the first VOCs organic gas concentration sensor 10 is used to monitor the VOCs organic gas concentration; the pressure sensor 11 is used to monitor the exhaust gas pressure; and the temperature sensor 12 is used to monitor the exhaust gas temperature.

[0041] VOCs waste gas generated from laboratories, production facilities, hazardous waste storage, etc., enters the waste gas treatment system through the main waste gas pipeline 5.

[0042] When the exhaust gas treatment system detects that the incoming gas concentration is ≤100PPM and the incoming gas flow rate is ≤100PPM, and the designed processing capacity of the regenerating cold field adsorption catalyst exhaust gas treatment device 1 is reached, the first electric regulating valve 14 is opened to 100% and the second electric regulating valve 16 is closed, allowing all the exhaust gas to flow into the regenerating cold field adsorption catalyst exhaust gas treatment device 1 for treatment, and finally enter the 15-meter-high exhaust stack 4 for high-altitude discharge. When the temperature sensor 12 detects that the incoming gas temperature is >40℃, the cooling coil in the regenerating cold field adsorption catalyst exhaust gas treatment device 1 is activated to cool the exhaust gas before it is purified by the purification section.

[0043] When the incoming gas concentration is greater than 100 PPM and the incoming gas flow rate is less than or equal to the design capacity of the safe thermal field reaction catalyst exhaust gas treatment device 2, the second electric regulating valve 16 is opened to 100% and the first electric regulating valve 14 is closed, so that all the exhaust gas flows into the safe thermal field reaction catalyst exhaust gas treatment device 2 for treatment, and finally enters the 15-meter-high exhaust stack 4 for high-altitude discharge.

[0044] When the incoming gas concentration is ≤100PPM and the incoming gas temperature is ≤40℃, but the incoming gas flow rate is > the design capacity of the stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1, it is necessary to use two technologies in combination. The first electric regulating valve 14 is opened to 100% and the second electric regulating valve 16 is opened to the required degree. The stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1 is used preferentially for exhaust gas treatment. Excess exhaust gas is treated through the safe hot field reaction catalyst exhaust gas treatment device 2. The treated exhaust gas enters the 15-meter-high exhaust stack 4 for high-altitude discharge.

[0045] When the incoming gas concentration is greater than 100 PPM and the incoming gas flow rate is greater than the design capacity of the safe thermal field reaction catalyst exhaust gas treatment device 2, two technologies need to be used simultaneously. The second electric regulating valve 16 is opened to 100% and the first electric regulating valve 14 is opened to the required degree. The safe thermal field reaction catalyst exhaust gas treatment device 2 is used preferentially for exhaust gas treatment. Excess exhaust gas is treated by the position-regenerated cold field adsorption catalyst exhaust gas treatment device 1. The treated exhaust gas is then discharged into a 15-meter-high exhaust stack 4.

[0046] A second flow sensor 13 and a third flow sensor 15 are respectively installed on the front section of the first exhaust gas branch pipe 6 and the front section of the second exhaust gas branch pipe 7 to verify whether the exhaust gas treatment capacity of the regenerated cold field adsorption catalyst exhaust gas treatment device 1 and the safe hot field reaction catalyst exhaust gas treatment device 2 is within the design range. If there is a deviation, the exhaust gas treatment capacity can be calibrated by adjusting the first electric regulating valve 14 and the second electric regulating valve 16.

[0047] The above control logic is implemented through intelligent control cabinet 3.

[0048] Compared with the safe hot field reaction catalyst exhaust gas treatment device 2, the stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1 has very low energy consumption during operation, and the initial investment of the stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1 is about half that of the safe hot field reaction catalyst exhaust gas treatment device 2. The stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1 occupies a smaller area, and no NOx is generated during the exhaust gas treatment process. This invention, by simultaneously installing a regenerating cold-field adsorption catalyst waste gas treatment device 1 and a safe hot-field reaction catalyst waste gas treatment device 2 within a single waste gas treatment system, and through an intelligent control cabinet 3 and various sensors, can select to use either the regenerating cold-field adsorption catalyst waste gas treatment device 1 or the safe hot-field reaction catalyst waste gas treatment device 2, or both, based on the continuity of waste gas emissions, waste gas temperature, and / or waste gas concentration. This significantly reduces initial investment, energy consumption, and overall footprint of the waste gas treatment system, and produces less NOx than a single safe hot-field reaction catalyst waste gas treatment device 2. When waste gas emissions are discontinuous and / or the waste gas concentration is below 100 PPM, the regenerating cold-field adsorption catalyst waste gas treatment device 1 is preferentially used, resulting in very low energy consumption and significant energy-saving effects, thus solving the problem of wasted power consumption from electric heating when using the safe hot-field reaction catalyst waste gas treatment device 2 alone.

[0049] The combined use of the regenerated cold field adsorption catalyst exhaust gas treatment device 1 and the safe hot field reaction catalyst exhaust gas treatment device 2 provides higher reliability for emergency backup.

[0050] A dust collector 17 is also installed on the main exhaust gas duct 5. The first switching valve 8 is located on the inlet side of the dust collector 17, and the first flow sensor 9, the first VOCs organic gas concentration sensor 10, the pressure sensor 11, and the temperature sensor 12 are all located on the outlet side of the dust collector 17. This design is necessary because most of the exhaust gas contains dust, and the dust collector 17 is installed to remove dust to protect subsequent exhaust gas treatment devices. The exhaust gas enters the dust collector 17 through the first switching valve 8, removing most of the dust particles from the exhaust gas.

[0051] A first flame arrester 18 is also installed on the main exhaust gas duct 5. The modified gas entering the main exhaust gas duct 5 first passes through the first flame arrester 18. The function of the first flame arrester 18 is to prevent external flames from entering equipment and pipelines containing flammable and explosive gases, and to prevent the flames from spreading between equipment and pipelines.

[0052] A bypass pipe 19 is connected to the main exhaust gas pipe 5. A second switching valve 20 is installed on the bypass pipe 19, and the first switching valve 8 and the second switching valve 20 are connected in parallel. With this design, when the dust particulate matter content of the incoming gas is low, the exhaust gas enters the subsequent treatment facilities through the bypass pipe 19.

[0053] A sensor group consisting of a first flow sensor 9, a first VOCs organic gas concentration sensor 10, a pressure sensor 11, and a temperature sensor 12 is connected to the main exhaust gas pipeline 5 between the sensor group and the dust collector 17. This design ensures that when the dust collector 17 is under maintenance, the exhaust gas can still enter the subsequent treatment system normally through the bypass pipeline 19.

[0054] A second VOCs organic gas concentration sensor 21 is installed on the first exhaust gas branch pipe 6 on the outlet side of the stationary regeneration cold field adsorption catalyst exhaust gas treatment device 1, and a third VOCs organic gas concentration sensor 22 is installed on the second exhaust gas branch pipe 7 on the outlet side of the safety hot field reaction catalyst exhaust gas treatment device 2. With this design, the second and third VOCs organic gas concentration sensors 21 and 22 are used to monitor whether the exhaust gas emission concentration meets the standards and to determine the exhaust gas treatment efficiency. The second VOCs organic gas concentration sensor 21 can also be used to determine the regeneration time of the stationary regeneration cold field adsorption catalyst.

[0055] A first check valve 23 is installed on the first exhaust gas branch pipe 6 on the outlet side of the positioned regeneration cold adsorption catalyst exhaust gas treatment device 1, and a second check valve 24 is installed on the second exhaust gas branch pipe 7 on the outlet side of the safe hot field reaction catalyst exhaust gas treatment device 2. This design prevents exhaust gas from flowing back into the positioned regeneration cold adsorption catalyst exhaust gas treatment device 1 or the safe hot field reaction catalyst exhaust gas treatment device 2.

[0056] The outlet ends of both exhaust gas branch pipes are connected to the exhaust stack 4 via the main pipe 25.

[0057] A second flame arrester 26 is installed on the main pipe 25.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A combined waste gas treatment system featuring a regeneration cold field and a safety hot field, characterized in that: The system includes a regenerated cold field adsorption catalyst exhaust gas treatment device (1), a safe hot field reaction catalyst exhaust gas treatment device (2), an intelligent control cabinet (3), an exhaust stack (4), a main exhaust gas pipeline (5), a first exhaust gas branch pipeline (6), and a second exhaust gas branch pipeline (7). The regenerated cold field adsorption catalyst exhaust gas treatment device (1) is connected to the first exhaust gas branch pipeline (6), and the safe hot field reaction catalyst exhaust gas treatment device (2) is connected to the second exhaust gas branch pipeline (7). The inlet ends of both exhaust gas branch pipelines are connected and fixed to the outlet ends of the main exhaust gas pipeline (5). The outlet ends of both exhaust gas branch pipelines are connected to the exhaust stack (4). The main exhaust gas pipeline (5) is equipped with a first switch valve (8), a first flow sensor (9), and a first VOCs organic gas concentration sensor. (10), pressure sensor (11) and temperature sensor (12), a second flow sensor (13) and a first electric regulating valve (14) are installed on the first waste gas branch pipe (6) located on the inlet side of the regeneration cold field adsorption catalyst waste gas treatment device (1), a third flow sensor (15) and a second electric regulating valve (16) are installed on the second waste gas branch pipe (7) located on the inlet side of the safety hot field reaction catalyst waste gas treatment device (2), and the first flow sensor (9), the second flow sensor (13), the third flow sensor (15), the first VOCs organic gas concentration sensor (10), the pressure sensor (11), the temperature sensor (12), the first electric regulating valve (14) and the second electric regulating valve (16) are all connected to the intelligent control cabinet (3).

2. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: A dust collector (17) is also installed on the main exhaust gas pipeline (5). The first switch valve (8) is located on the inlet side of the dust collector (17), and the first flow sensor (9), the first VOCs organic gas concentration sensor (10), the pressure sensor (11) and the temperature sensor (12) are all located on the outlet side of the dust collector (17).

3. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: A first flame arrester (18) is also installed on the main exhaust gas duct (5).

4. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: A bypass pipe (19) is connected to the main exhaust gas pipe (5), and a second switch valve (20) is installed on the bypass pipe (19). The first switch valve (8) and the second switch valve (20) are connected in parallel.

5. The combined cold and hot zone exhaust gas treatment system according to claim 2, characterized in that: The sensor group consists of a first flow sensor (9), a first VOCs organic gas concentration sensor (10), a pressure sensor (11), and a temperature sensor (12). The outlet end of the bypass pipe (19) is connected to the main exhaust gas pipe (5) between the sensor group and the dust collector (17).

6. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: A second VOCs organic gas concentration sensor (21) is installed on the first exhaust gas branch pipe (6) on the outlet side of the positioning regeneration cold field adsorption catalyst exhaust gas treatment device (1), and a third VOCs organic gas concentration sensor (22) is installed on the second exhaust gas branch pipe (7) on the outlet side of the safety hot field reaction catalyst exhaust gas treatment device (2).

7. The combined waste gas treatment system of regeneration cold field and safety hot field according to claim 1, characterized in that: A first check valve (23) is also installed on the first exhaust gas branch pipe (6) on the outlet side of the positioning regeneration cold field adsorption catalyst exhaust gas treatment device (1), and a second check valve (24) is also installed on the second exhaust gas branch pipe (7) on the outlet side of the safety hot field reaction catalyst exhaust gas treatment device (2).

8. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: The outlet ends of both exhaust gas branch pipes are connected to the exhaust stack (4) via a main pipe (25).

9. The combined cold and hot zone exhaust gas treatment system according to claim 1, characterized in that: A second flame arrester (26) is installed on the main pipe (25).

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