System and process for simultaneously desorbing rotating wheel and fixed bed

Abstract

The invention relates to the technical field of flue gas recovery, in particular to a system and process for simultaneous desorption of a rotating wheel and a fixed bed. The gas inlet end of an adsorption area of a concentration rotating wheel is connected with a first waste gas source, the exhaust end of the adsorption area of the concentration rotating wheel is connected with an exhaust manifold, and the gas outlet end of the desorption area of the concentration rotating wheel is connected with the gas inlet end of a first air mixing box; the air outlet end of the first air mixing box is connected with a third air inlet pipe of the incinerator, a third exhaust pipe of the incinerator is connected with the air inlet end of the second air mixing box, the air outlet end of the second air mixing box is connected with a first air inlet pipe of the activated carbon adsorber, and a first exhaust pipe of the activated carbon adsorber is connected with the air inlet end of the first air mixing box. A gas inlet pipe II of the activated carbon adsorber is connected with a waste gas source II; an exhaust pipe II of the activated carbon adsorber is connected with the exhaust manifold. According to the invention, the simultaneous desorption of the activated carbon and the concentration rotating wheel in the activated carbon adsorber is realized through the incinerator.

Description

Technical Field

[0001] The patent of this invention relates to the field of flue gas recovery technology, and specifically to a simultaneous desorption system and process of a rotary wheel and a fixed bed. Background Art

[0002] The painting line of surface coating industry such as electric vehicles and automobile bodies is generally divided into three steps: the first step is mid-coat spraying, leveling and drying; the second step is color paint spraying, leveling and drying; the third step is varnish spraying, leveling and drying.

[0003] The first and second step spray paint rooms generally use water-based paint, with low VOCs concentration, and are treated by activated carbon adsorption + CO catalytic oxidation furnace desorption. The third step generally uses oil-based paint, with high VOCs concentration, and needs to be treated by rotary concentration + RTO / RCO regenerative oxidation / regenerative catalytic oxidation. Although the two systems run at the same time, the control and pipelines are relatively independent. At most, they share one chimney for exhaust. The three-step drying room collects the exhaust gas separately, with small exhaust volume and high temperature, and generally directly enters RTO.

[0004] However, in the first and second steps of activated carbon adsorption + CO catalytic oxidation furnace desorption, the initial investment in the CO furnace alone is large and the space it occupies is large. After commissioning, it also consumes a lot of energy (electricity and gas) during operation. The third step uses rotary concentration + RTO / RCO regenerative oxidation / regenerative catalytic oxidation technology. The RTO furnace outlet temperature is 70-130°C, resulting in heat waste. Summary of the invention

[0005] The invention provides a rotating wheel and fixed bed simultaneous desorption system.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A simultaneous desorption system of a rotor and a fixed bed comprises a concentrating rotor, an incinerator and an activated carbon adsorber, wherein the air inlet end of the adsorption zone of the concentrating rotor is connected to a waste gas source 1, the air outlet end of the adsorption zone of the concentrating rotor is connected to an exhaust main pipe, the air outlet end of the desorption zone of the concentrating rotor is connected to the air inlet end of a mixing air box 1, the air outlet end of the mixing air box 1 is connected to an air inlet pipe 3 of the incinerator, the exhaust pipe 3 of the incinerator is connected to the air inlet end of a mixing air box 2, the air outlet end of the mixing air box 2 is connected to an air inlet pipe 1 of the activated carbon adsorber, the exhaust pipe 1 of the activated carbon adsorber is connected to the air inlet end of the mixing air box 1, the air inlet pipe 2 of the activated carbon adsorber is connected to an exhaust gas source 2, and the exhaust pipe 2 of the activated carbon adsorber is connected to the exhaust main pipe The upper part of the incinerator is connected to one end of the connecting pipe 2, the other end of the connecting pipe 2 is connected to the air inlet end of the mixing box 2, the air inlet end of the mixing box 2 is provided with a connecting pipe 3, the connecting pipe 3 is connected to the air source, the connecting pipe 3 is equipped with a control valve 1, the connecting pipe 2 is equipped with a control valve 2, the air inlet end of the mixing box 2 connected to the exhaust pipe 3 of the incinerator is provided with a flow sensor 3 and a temperature sensor 3, the air inlet end of the mixing box 2 connected to the connecting pipe 2 is provided with a flow sensor 1 and a temperature sensor 1, the air inlet end of the mixing box 2 connected to the air inlet pipe 1 is provided with a flow sensor 4 and a temperature sensor 4, the air inlet end of the mixing box 2 connected to the connecting pipe 3 is provided with a flow sensor 2 and a temperature sensor 2.

[0007] Furthermore, the exhaust pipe 1 of the activated carbon adsorber is connected to the exhaust manifold 1, and the exhaust manifold 1 is equipped with a fan 3.

[0008] Furthermore, the exhaust pipe 2 of the activated carbon adsorber is connected to the exhaust manifold 2, and the exhaust manifold 2 is connected to the fan 4.

[0009] Furthermore, the air intake pipe 1 of the activated carbon adsorber is connected to the air intake manifold 1, the air intake manifold 1 is connected to one end of the control valve 5, the other end of the control valve 5 is connected to the connecting pipe 4, the connecting pipe 4 is connected to the air intake end of the air mixing box 2, the connecting pipe 4 is connected to the exhaust pipe 4, the other end of the exhaust pipe 4 is connected to the exhaust main pipe, and the exhaust pipe 4 is equipped with a control valve 4.

[0010] Furthermore, the exhaust gas source is divided into two parts, one part is filtered by filter three and then enters the activated carbon adsorber through intake pipe two, and the other part enters filter two for filtration, the outlet end of filter two is connected to connecting pipe five and connecting pipe six, connecting pipe five is equipped with control valve six, connecting pipe six is ​​equipped with control valve three, connecting pipe five is connected to mixing box one, and connecting pipe six is ​​connected to the intake end of filter three.

[0011] Furthermore, the exhaust end of the adsorption zone of the concentration wheel is connected to fan 1, the exhaust end of fan 1 is connected to the exhaust main pipe, and the exhaust main pipe is connected to the chimney.

[0012] Furthermore, a switching valve 1 is installed on the exhaust pipe 1 of the activated carbon adsorber, a switching valve 2 is installed on the intake pipe 1, a switching valve 3 is installed on the intake pipe 2, and a switching valve 4 is installed on the exhaust pipe 2.

[0013] Furthermore, the desorption inlet end of the concentrating wheel is connected to the outlet end of the tube side of the heat exchanger, the outlet end of the cooling zone of the concentrating wheel is connected to the inlet end of the tube side of the heat exchanger, the inlet end of the shell side of the heat exchanger is connected to one end of connecting pipe one, the other end of connecting pipe one is connected to the upper end of the incinerator, and the outlet end of the shell side of the heat exchanger is connected to the exhaust main pipe.

[0014] Furthermore, a fan 2 is installed between the air outlet end of the air mixing box 1 and the air inlet pipe 3 of the incinerator.

[0015] Advantages: The present invention realizes the simultaneous desorption of activated carbon in the activated carbon adsorber and the concentrating wheel through the incinerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the air mixing box 2 in the present invention; Figure 3 It is a schematic diagram of the structure of the activated carbon adsorber in the present invention.

[0017] In the figure: 1 filter 1, 2 concentration wheel, 3 fan 1, 4 mixing air box 1, 5 fan 2, 6 incinerator, 7 mixing air box 2, 8 control valve 1, 9 control valve 2, 10 filter 2, 11 control valve 6, 12 control valve 3, 13 filter 3, 14 activated carbon adsorber, 15 fan 3, 16 fan 4, 17 control valve 4, 18 control valve 5, 19 heat exchanger, 20 exhaust gas source 1, 21 exhaust gas source 2, 22 chimney, 23 connecting pipe 1, 24 connecting pipe 2; 401 exhaust pipe 1, 402 exhaust manifold 1, 403 exhaust pipe 2, 404 exhaust manifold 2, 405 intake pipe 1, 406 intake manifold 1, 407 intake pipe 2, 408 switching valve 1, 409 switching valve 2, 410 switching valve 3, 411 switching valve 4; 601 intake pipe three, 602 exhaust pipe three; 701 flow sensor one, 702 temperature sensor one, 703 flow sensor two, 704 temperature sensor two, 705 flow sensor three, 706 temperature sensor three, 707 flow sensor four, 708 temperature sensor four. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Reference Figure 1–3 shows a simultaneous desorption system of a wheel and a fixed bed in the present invention, comprising a concentrating wheel 2, an incinerator 6 and an activated carbon adsorber 14, wherein the air inlet end of the adsorption zone of the concentrating wheel 2 is connected to a waste gas source 20, the air outlet end of the adsorption zone of the concentrating wheel 2 is connected to an exhaust main pipe, the air outlet end of the desorption zone of the concentrating wheel 2 is connected to the air inlet end of a mixing box 4, the air outlet end of the mixing box 4 is connected to an air inlet pipe 60 of the incinerator 6. 1, the exhaust pipe 3 602 of the incinerator 6 is connected to the air inlet end of the mixing box 2 7, the air outlet end of the mixing box 2 7 is connected to the air inlet pipe 1 405 of the activated carbon adsorber 14, the exhaust pipe 1 401 of the activated carbon adsorber 14 is connected to the air inlet end of the mixing box 1 4, the air inlet pipe 2 407 of the activated carbon adsorber 14 is connected to the exhaust gas source 2 21, the exhaust pipe 2 403 of the activated carbon adsorber 14 is connected to the exhaust main pipe The upper part of the incinerator 6 is connected to one end of the connecting pipe 24, and the other end of the connecting pipe 24 is connected to the air inlet end of the mixing box 27. The air inlet end of the mixing box 27 is provided with a connecting pipe 3, and the connecting pipe 3 is connected to the air source. The connecting pipe 3 is equipped with a control valve 1 8, and the connecting pipe 24 is equipped with a control valve 2 9. The air inlet end of the mixing box 27 connected to the exhaust pipe 3 602 of the incinerator 6 is provided with a flow sensor 3 705 and a temperature sensor 3 706, the air inlet end of the mixing box 27 connected to the connecting pipe 24 is provided with a flow sensor 1 701 and a temperature sensor 1 702, the air inlet end of the mixing box 27 connected to the air inlet pipe 1 405 is provided with a flow sensor 4 707 and a temperature sensor 4 708, and the air inlet end of the mixing box 27 connected to the connecting pipe 3 is provided with a flow sensor 2 703 and a temperature sensor 2 704. The exhaust pipe 1 401 of the activated carbon adsorber 14 is connected to the exhaust manifold 1 402, and the exhaust manifold 1 402 is equipped with a fan 3 15. The exhaust pipe 2 403 of the activated carbon adsorber 14 is connected to the exhaust manifold 2 404, and the exhaust manifold 2 404 is connected to the fan 4 16.

[0021] The air intake pipe 405 of the activated carbon adsorber 14 is connected to an air intake manifold 406, the air intake manifold 406 is connected to one end of a control valve 5 18, the other end of the control valve 5 18 is connected to a connecting pipe 4, the connecting pipe 4 is connected to the air intake end of an air mixing box 2 7, the connecting pipe 4 is connected to an exhaust pipe 4, the other end of the exhaust pipe 4 is connected to the exhaust main pipe, and a control valve 4 17 is installed on the exhaust pipe 4.

[0022] The waste gas source 21 is divided into two parts, one part is filtered by the filter 3 13 and then enters the activated carbon adsorber 14 through the intake pipe 2 407, and the other part enters the filter 2 10 for filtration, the outlet end of the filter 2 10 is connected to the connecting pipe 5 and the connecting pipe 6, the connecting pipe 5 is equipped with a control valve 6 11, the connecting pipe 6 is equipped with a control valve 3 12, the connecting pipe 5 is connected to the mixing box 1, and the connecting pipe 6 is connected to the intake end of the filter 3 13. The waste gas source 2 includes the first step of mid-coat spraying, leveling, and drying, and the second step of color paint spraying, leveling, and drying; the waste gas source 1 includes the third step of varnish spraying, leveling, and drying.

[0023] The exhaust end of the adsorption zone of the concentration wheel 2 is connected to the fan 3, the outlet end of the fan 3 is connected to the exhaust main pipe, and the exhaust main pipe is connected to the chimney 22. The exhaust pipe 401 of the activated carbon adsorber 14 is equipped with a switching valve 408, the intake pipe 405 is equipped with a switching valve 409, the intake pipe 407 is equipped with a switching valve 3 410, and the exhaust pipe 403 is equipped with a switching valve 411.

[0024] The desorption inlet end of the concentrating wheel 2 is connected to the outlet end of the tube side of the heat exchanger 19, the outlet end of the cooling zone of the concentrating wheel 2 is connected to the inlet end of the tube side of the heat exchanger 19, the inlet end of the shell side of the heat exchanger 19 is connected to one end of the connecting pipe 1 23, the other end of the connecting pipe 1 23 is connected to the upper end of the incinerator 6, and the outlet end of the shell side of the heat exchanger 19 is connected to the exhaust main pipe. A fan 2 5 is installed between the outlet end of the mixing box 1 4 and the inlet pipe 3 601 of the incinerator 6.

[0025] The gas outlet end of the cooling zone of the concentrating wheel 2 enters the heat exchanger 19 to exchange heat with the hot gas drawn out of the incinerator 6, and then enters the gas inlet end of the desorption zone of the concentrating wheel 2 to desorb the concentrating wheel 2. The desorbed gas enters the air mixing box 4, and the hot gas drawn out of the incinerator 6 enters the exhaust main pipe for discharge after heat exchange in the heat exchanger 19.

[0026] The present invention provides an embodiment, a rotary wheel and fixed bed simultaneous desorption process, when the outlet detector of the activated carbon adsorber 14 prompts the corresponding design value or the time accumulation module of the activated carbon adsorber 14 prompts that the adsorption time has been reached, the waste gas source 21 switches the control valve 6 11 to close, the control valve 3 12 to open, the activated carbon adsorber 14 starts to use the incinerator for desorption, and the activated carbon adsorbers 14 in the system start to desorb from left to right in sequence. During desorption, the switching valve 3 410 of the intake pipe 2 407 of one of the activated carbon adsorbers 14 is closed, the switching valve 4 411 of the exhaust pipe 2 403 is closed, and the intake pipe 2 407 of the activated carbon adsorber 14 is closed. The switching valve 2 409 of the pipe 1 405 is opened, the switching valve 1 408 of the exhaust pipe 1 401 is opened, the fan 3 15 is opened, and the exhaust pipe 3 602 of the incinerator 6 and the connecting pipe 2 24 discharge the gas in the incinerator 6 after heating and oxidation into the mixing box 2 7, and enter the activated carbon adsorber 14 through the connecting pipe 4 of the mixing box 2 7, the intake manifold 1 406 and the intake pipe 1 405. At this time, the control valve 5 18 on the connecting pipe 4 is in an open state. When the air volume in the connecting pipe 4 is too large, the control valve 4 17 on the exhaust pipe 4 can be opened to discharge part of the gas in the connecting pipe 4 from the exhaust manifold through the exhaust pipe 4. The activated carbon in the activated carbon adsorber 14 is discharged, and the activated carbon in the activated carbon adsorber 14 is desorbed, and finally enters the exhaust manifold 1402 from the exhaust pipe 1401 at the bottom of the activated carbon adsorber 14. The desorbed gas enters the mixing box 14 under the action of the fan 3 15. The mixing box 4 is mixed with the gas desorbed by the concentration wheel 2 and the gas desorbed by the activated carbon adsorber 14. Under the action of the fan 2 5, the gas enters the incinerator 6 through the intake pipe 3 601 for incineration and oxidation. After the desorption of one activated carbon adsorber 14 is completed, the switching valve 3 410 of the intake pipe 2 407 of the activated carbon adsorber 14 is opened, and the switching valve 3 410 of the exhaust pipe 2 403 is closed. The switching valve four 411 is opened, the switching valve two 409 of the intake pipe one 405 is closed, and the switching valve one 408 of the exhaust pipe one 401 is closed. Then, the switching valve three 410 of the intake pipe two 407 of another activated carbon adsorber 14 is closed, the switching valve four 411 of the exhaust pipe two 403 is closed, the switching valve two 409 of the intake pipe one 405 is opened, and the switching valve one 408 of the exhaust pipe one 401 is opened. Then, the activated carbon adsorber 14 is desorbed. The cycle is repeated until all the activated carbon adsorbers 14 are completely desorbed. Then, the control valve six 11 is opened, the control valve three 12 is closed, and the system adsorbs exhaust gas normally.

[0027] The waste gas source 20 enters the adsorption area of ​​the concentration wheel 2 for adsorption after being filtered by the filter 1, and is finally discharged from the chimney 22 through the exhaust main pipe under the action of the fan 3.

[0028] For the remaining activated carbon adsorbers 14, the switching valve three 410 of the intake pipe two 407 is opened, the switching valve four 411 of the exhaust pipe two 403 is opened, the switching valve two 409 of the intake pipe one 405 is closed, and the switching valve one 408 of the exhaust pipe one 401 is closed. During adsorption, the exhaust gas source two 21 enters the intake pipe two 407 of the activated carbon adsorber 14 after being filtered by the filter three 13. The exhaust gas enters the activated carbon adsorber 14 and is adsorbed by the internal activated carbon. The exhaust gas is discharged through the exhaust pipe two 403 and the exhaust manifold at the top of the activated carbon adsorber 14, and is discharged through the chimney 22 under the action of the fan four 16.

[0029] When desorption is not required, the control valve five 18 on the connecting pipe four is in a closed state, the control valve four 17 on the exhaust pipe four is in an open state, and the gas exhausted from the incinerator 6 enters the exhaust main pipe through the exhaust pipe and is discharged.

[0030] When the activated carbon adsorber 14 is desorbed, the temperature of the gas entering the connecting pipe 4 is adjusted by adjusting the opening of the control valve 1 8 and the control valve 2 9. The adjustment method is to increase or decrease the amount of normal temperature air entering the air mixing box 2 7. The specific adjustment formula is: Q3=(Q1(1−T 目标 / T1)+Q2(1−T 目标 / T2)) / (T 目标 / T3−1) The data measured by the flow sensor 701 is Q1, and the data measured by the temperature sensor 702 is T1. The data measured by the flow sensor 2 703 is Q2, and the data measured by the temperature sensor 2 704 is T2. The data measured by the flow sensor 3 705 is Q3, and the data measured by the temperature sensor 3 706 is T3. The data measured by the flow sensor four 707 is Qmix, and the data measured by the temperature sensor four 708 is Tmix; The temperature sensor 708 detects the gas temperature Tmix at the outlet of the air mixing box 7 in real time, and compares Tmix with the target desorption temperature T of the activated carbon adsorber 14. 目标 For comparison, when Tmix>T 目标 When Tmix<T 目标 When, the system reduces the opening of control valve 8.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotating wheel and fixed bed simultaneous desorption system, characterized in that: The invention comprises a concentrating wheel, an incinerator and an activated carbon adsorber, wherein the air inlet end of the adsorption zone of the concentrating wheel is connected to a waste gas source 1, the air outlet end of the adsorption zone of the concentrating wheel is connected to an exhaust main pipe, the air outlet end of the desorption zone of the concentrating wheel is connected to the air inlet end of a mixing air box 1, the air outlet end of the mixing air box 1 is connected to an air inlet pipe 3 of the incinerator, the exhaust pipe 3 of the incinerator is connected to the air inlet end of a mixing air box 2, the air outlet end of the mixing air box 2 is connected to an air inlet pipe 1 of the activated carbon adsorber, the exhaust pipe 1 of the activated carbon adsorber is connected to the air inlet end of the mixing air box 1, the air inlet pipe 2 of the activated carbon adsorber is connected to a waste gas source 2, the exhaust pipe 2 of the activated carbon adsorber is connected to an exhaust main pipe, and the incinerator The upper part is connected to one end of connecting pipe two, the other end of connecting pipe two is connected to the air inlet end of mixing box two, connecting pipe three is provided on the air inlet end of mixing box two, connecting pipe three is connected to the air source, connecting pipe three is equipped with control valve one, connecting pipe two is equipped with control valve two, the air inlet end of mixing box two connected to the exhaust pipe three of the incinerator is provided with flow sensor three and temperature sensor three, the air inlet end of mixing box two connected to connecting pipe two is provided with flow sensor one and temperature sensor one, the air inlet end of mixing box two connected to intake pipe one is provided with flow sensor four and temperature sensor four, the air inlet end of mixing box two connected to connecting pipe three is provided with flow sensor two and temperature sensor two.

2. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The exhaust pipe 1 of the activated carbon adsorber is connected to the exhaust manifold 1, and the exhaust manifold 1 is equipped with a fan 3.

3. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The second exhaust pipe of the activated carbon adsorber is connected to the second exhaust manifold, and the second exhaust manifold is connected to the fourth fan.

4. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The air intake pipe 1 of the activated carbon adsorber is connected to the air intake manifold 1, the air intake manifold 1 is connected to one end of the control valve 5, the other end of the control valve 5 is connected to the connecting pipe 4, the connecting pipe 4 is connected to the air intake end of the air mixing box 2, the connecting pipe 4 is connected to the exhaust pipe 4, the other end of the exhaust pipe 4 is connected to the exhaust main pipe, and the exhaust pipe 4 is equipped with a control valve 4.

5. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The exhaust gas source 2 is divided into two parts. One part is filtered by filter 3 and then enters the activated carbon adsorber through intake pipe 2, and the other part enters filter 2 for filtration. The outlet end of filter 2 is connected to connecting pipe 5 and connecting pipe 6. Control valve 6 is installed on connecting pipe 5, and control valve 3 is installed on connecting pipe 6. Connecting pipe 5 is connected to mixing box 1, and connecting pipe 6 is connected to the intake end of filter 3.

6. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The exhaust end of the adsorption zone of the concentration wheel is connected to the fan 1, the air outlet end of the fan 1 is connected to the exhaust main pipe, and the exhaust main pipe is connected to the chimney.

7. A rotating wheel and fixed bed simultaneous desorption system according to claim 1, characterized in that: The activated carbon adsorber has an exhaust pipe 1 equipped with a switching valve 1, an intake pipe 1 equipped with a switching valve 2, an intake pipe 2 equipped with a switching valve 3, and an exhaust pipe 2 equipped with a switching valve 4.

8. The simultaneous desorption system of a rotating wheel and a fixed bed according to claim 1, characterized in that: The desorption inlet end of the concentrating wheel is connected to the outlet end of the tube side of the heat exchanger, the outlet end of the cooling zone of the concentrating wheel is connected to the inlet end of the tube side of the heat exchanger, the inlet end of the shell side of the heat exchanger is connected to one end of the connecting pipe one, the other end of the connecting pipe one is connected to the upper end of the incinerator, and the outlet end of the shell side of the heat exchanger is connected to the exhaust main pipe.

9. A simultaneous desorption process of a rotary wheel and a fixed bed, characterized in that: When the outlet detector of the activated carbon adsorber prompts the corresponding design value or the time accumulation module of the activated carbon adsorber prompts that the adsorption time has been reached, the exhaust gas source 2 switching control valve 6 is closed and the control valve 3 is opened, and the activated carbon adsorber begins to desorb using the incinerator. The activated carbon adsorbers in the system start to desorb from left to right. During desorption, the switching valve 3 of the intake pipe 2 of one of the activated carbon adsorbers is closed, the switching valve 4 of the exhaust pipe 2 is closed, the switching valve 2 of the intake pipe 1 is opened, the switching valve 1 of the exhaust pipe 1 is opened, the fan 3 is opened, and the incinerator is incinerated. The exhaust pipe 3 of the furnace and the connecting pipe 2 discharge the heated and oxidized gas in the incinerator into the mixing box 2, and enter the activated carbon adsorber through the connecting pipe 4 of the mixing box 2, the air intake manifold 1 and the air intake pipe 1. At this time, the control valve 5 on the connecting pipe 4 is in an open state. When the air volume in the connecting pipe 4 is too large, the control valve 4 on the exhaust pipe 4 can be opened to discharge part of the gas in the connecting pipe 4 from the exhaust manifold through the exhaust pipe 4 to desorb the activated carbon in the activated carbon adsorber. According to the optimal adsorption temperature T of the activated carbon in the activated carbon adsorber, 目标 , the amount of normal temperature air entering the air mixing box 2 is adjusted by adjusting the opening of the control valve 1 on the connecting pipe 3. The specific calculation formula is: Q3=(Q1(1−T 目标 / T1)+Q2(1−T 目标 / T2)) / (T 目标 / T3−1); finally, the exhaust pipe 1 at the bottom of the activated carbon adsorber enters the exhaust manifold 1, and the desorbed gas enters the mixing box 1 under the action of the fan 3. The mixing box 1 mixes the gas desorbed by the concentrator and the gas desorbed by the activated carbon adsorber, and enters the incinerator through the intake pipe 3 under the action of the fan 2 for incineration and oxidation. After the desorption of one activated carbon adsorber is completed, the switching valve 3 of the intake pipe 2 of the activated carbon adsorber is opened, the switching valve 4 of the exhaust pipe 2 is opened, the switching valve 2 of the intake pipe 1 is closed, and the switching valve 1 of the exhaust pipe 1 is closed. Then, the switching valve 3 of the intake pipe 2 of another activated carbon adsorber is closed, the switching valve 4 of the exhaust pipe 2 is closed, the switching valve 2 of the intake pipe 1 is opened, and the switching valve 1 of the exhaust pipe 1 is opened, and then the activated carbon adsorber is desorbed. The cycle is repeated until all activated carbon adsorbers are desorbed, and then the control valve 6 is opened, the control valve 3 is closed, and the system adsorbs exhaust gas normally.

10. A rotating wheel and fixed bed simultaneous desorption process according to claim 9, characterized in that: The temperature sensor 4 detects the gas temperature Tmix at the outlet of the mixing box 2 in real time, and compares Tmix with the target desorption temperature T 目标 For comparison, when Tmix>T 目标 When Tmix<T 目标 When , the system reduces the opening of control valve 1.

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