Air treatment system

Abstract

The utility model discloses an air treatment system which comprises an H2S removal rotating wheel and a first dehumidification rotating wheel which are sequentially arranged, the H2S removal rotating wheel comprises an adsorption area and a desorption area, and the first dehumidification rotating wheel comprises a first dehumidification area, a first regeneration area and a first cooling area; the upstream of the air inlet duct is used for air entering, and the downstream of the air inlet duct is connected with the adsorption area; the treatment air duct comprises a first air duct and a regeneration air duct, the upstream of the first air duct is connected with the adsorption area, the downstream of the first air duct is connected with the upstream of the regeneration air duct, and the regeneration air duct is sequentially connected with the first cooling area, the first regeneration area and the desorption area in series; and the downstream of the regeneration air duct is used for discharging the gas. The air treatment system disclosed by the utility model can effectively remove hydrogen sulfide and moisture in the air, so that the air treatment efficiency and effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air treatment technical field especially relates to an air treatment system. BACKGROUND

[0002] In the production process of solid-state batteries, a key problem that cannot be avoided is the generation of toxic hydrogen sulfide (H2S) gas. H2S gas not only poses a direct threat to the health of operating personnel due to its unique rotten egg odor, but more importantly, it also seriously affects the production quality and final performance of the battery. Therefore, exploring an air treatment technology that can not only effectively remove H2S gas in the production environment, but also ensure that the production environment maintains low dew point conditions, has become a core technical problem that needs to be solved in the field of solid-state battery manufacturing.

[0003] One traditional strategy is to create an oxygen-free and water-free environment by delivering nitrogen or other inert gases. This method is more suitable for small-scale, small-scale testing, but in large-scale production, due to the requirement for the airtightness of the production workshop or the need for a large amount of nitrogen to maintain the environment, it will result in a significant increase in production costs.

[0004] Another traditional coping strategy mainly relies on fresh air introduction to dilute and replace polluted air containing H2S. However, this method has exposed significant defects in actual application. First of all, it is difficult to achieve the low dew point standard required by the production environment by relying solely on fresh air replacement, because fresh air often contains a high amount of moisture, which greatly increases the difficulty and energy consumption of subsequent dehumidification processing. Secondly, if excessive dehumidification processing is carried out in order to forcibly achieve the low dew point requirement, not only will it result in a sharp rise in energy consumption, but it will also go against the current environmental protection concept of energy saving and emission reduction.

[0005] In view of the limitations of the prior art, the present application proposes an air treatment system. UTILITY MODEL CONTENT

[0006] The purpose of the utility model is to provide an air treatment system that can effectively remove hydrogen sulfide (H2S) and moisture from the air, improving the efficiency and effectiveness of air treatment.

[0007] The purpose of the utility model is achieved by adopting the following technical solutions:

[0008] The utility model provides an air treatment system, comprising:

[0009] The H2S removal wheel and the first dehumidification wheel are arranged in sequence, the H2S removal wheel comprises an adsorption zone and a desorption zone, and the first dehumidification wheel comprises a first dehumidification zone, a first regeneration zone, and a first cooling zone;

[0010] An air inlet duct, upstream of which air is introduced, downstream of which the adsorption zone is connected;

[0011] A treatment air duct, which comprises a first air duct and a regeneration air duct, the first air duct being connected upstream to the adsorption zone, the first air duct being connected downstream to the upstream of the regeneration air duct, the regeneration air duct being connected in series to the first cooling zone, the first regeneration zone and the desorption zone in sequence, downstream of which the air is discharged.

[0012] The above scheme has the beneficial effect that the H2S removal wheel and the first dehumidification wheel are arranged in sequence, which can effectively remove hydrogen sulfide (H2S) and moisture in the air. It ensures that the air has undergone preliminary purification treatment before entering the subsequent processing link, thereby improving the efficiency and quality of the overall air treatment. Specifically, the air inlet duct introduces the gas into the adsorption zone of the H2S removal wheel, and the gas after the adsorption treatment enters the regeneration air duct through the first air duct. In the regeneration air duct, the gas passes through the first cooling zone, the first regeneration zone and the desorption zone in sequence, and is finally discharged from the system. It ensures that the gas can be fully treated in each processing stage. In addition, during the regeneration process, the gas is cooled by the first cooling zone, then dehumidified and regenerated by the first regeneration zone, and finally the pollutants adsorbed on the wheel are removed by the desorption zone. Not only improves the regeneration efficiency of the wheel, but also prolongs the service life of the wheel.

[0013] Further, the air inlet duct comprises:

[0014] A fresh air duct, upstream of which fresh air is introduced;

[0015] A return air duct, upstream of which air to be treated is introduced, downstream of which the return air duct is connected to the downstream of the fresh air duct after merging, and the adsorption zone is connected to the adsorption zone so that the gas containing fresh air and air to be treated enters the adsorption zone.

[0016] The above scheme has the beneficial effect that by arranging the fresh air duct and the return air duct, the fresh air and the air to be treated can be mixed and then introduced into the adsorption zone, which improves the flexibility and efficiency of air treatment.

[0017] Further, the treatment air duct further comprises:

[0018] A second air duct, upstream of which the first air duct is connected downstream, and downstream of which the first dehumidification zone is connected;

[0019] An air supply duct, upstream of which the first dehumidification zone is connected, and downstream of which the upstream of the return air duct is connected.

[0020] The beneficial effects of the above scheme are: by setting the second air duct and the air supply air duct, the treated air can be recycled, the energy consumption is reduced, and the continuity of air treatment is improved.

[0021] Further, the air treatment system further comprises:

[0022] The second dehumidification runner is arranged on the side of the H2S removal runner away from the first dehumidification runner.

[0023] The beneficial effects of the above scheme are: by setting the second dehumidification runner, the dehumidification capacity of the system is further enhanced, and it is suitable for occasions with higher humidity requirements.

[0024] Further, the second dehumidification runner comprises:

[0025] The second regeneration area is connected to the regeneration air duct;

[0026] The second dehumidification area is connected to the downstream of the return air duct and the downstream of the fresh air duct after the downstream of the return air duct and the downstream of the fresh air duct are combined.

[0027] The beneficial effects of the above scheme are: the mixed gas can be preliminarily dehumidified and then hydrogen sulfide is adsorbed.

[0028] Further, the second dehumidification runner comprises:

[0029] The second regeneration area is connected to the regeneration air duct;

[0030] The second dehumidification area is connected to the downstream of the return air duct and the downstream of the fresh air duct after the downstream of the return air duct and the downstream of the fresh air duct are combined.

[0031] The beneficial effects of the above scheme are: the fresh air can be preliminarily dehumidified, then mixed with the air to be treated, and then hydrogen sulfide is adsorbed.

[0032] Further, the air treatment system further comprises:

[0033] At least one third dehumidification runner is arranged between the H2S removal runner and the first dehumidification runner.

[0034] The beneficial effects of the above scheme are:

[0035] Further, the third dehumidification runner comprises:

[0036] The third regeneration area is connected to the regeneration air duct;

[0037] A third dehumidification zone is connected to the upstream of the second air duct.

[0038] The third dehumidification runner further enhances the dehumidification capacity of the system, and is suitable for occasions with extremely high dehumidification requirements.

[0039] Further, the regeneration air duct is provided with:

[0040] A regeneration fan is arranged to flow the gas through the regeneration air duct; and / or,

[0041] A heating assembly is arranged to heat the gas flowing through the regeneration air duct.

[0042] The regeneration fan and the heating assembly ensure the smooth flow of the gas in the regeneration air duct, and improve the regeneration efficiency through heating.

[0043] Further, the supply air duct is provided with:

[0044] A rear surface cooler is arranged to cool the gas in the supply air duct.

[0045] Further, the supply air duct is provided with a second filter for filtering impurities in the gas.

[0046] The rear surface cooler cools the supply air duct, the second filter filters the impurities in the supply air duct, so as to improve the quality and processing efficiency of the air in the supply air duct.

[0047] Further, the fresh air duct is provided with:

[0048] A wind valve is arranged to adjust the proportion of fresh air entering.

[0049] Further, the fresh air duct is provided with:

[0050] A first filter is arranged to filter impurities in the fresh air.

[0051] Further, the fresh air duct is provided with:

[0052] A front surface cooler is arranged to cool the fresh air in the fresh air duct.

[0053] The wind valve adjusts the proportion of fresh air entering, the first filter filters the impurities in the fresh air, and the front surface cooler cools the fresh air, so as to improve the quality and processing efficiency of the air in the fresh air duct.

[0054] Further, a supply fan is arranged downstream of the first air duct, and the supply fan is used to make the gas flow through the first air duct, the regeneration air duct and the second air duct.

[0055] The above scheme has the beneficial effect that the supply fan is arranged to ensure the smooth flow of the gas in the first air duct, the regeneration air duct and the second air duct, so as to improve the air quality and processing efficiency in the air duct.

[0056] Further, the air treatment system further comprises:

[0057] At least one middle surface cooler is arranged between the two rotary wheels.

[0058] The above scheme has the beneficial effect that the middle surface cooler is arranged to cool the gas between the two rotary wheels, which helps to improve the overall dehumidification effect and stability of the system.

[0059] Compared with the prior art, the air treatment system has at least the following beneficial effects:

[0060] The air treatment system has the beneficial effect that the H2S removal rotary wheel and the first dehumidification rotary wheel are arranged in sequence, so that the hydrogen sulfide (H2S) and moisture in the air can be effectively removed. The air is preliminarily purified before entering the subsequent processing link, so as to improve the efficiency and quality of the overall air treatment. Specifically, the air inlet duct introduces the gas into the adsorption area of the H2S removal rotary wheel, and the gas after the adsorption treatment enters the regeneration air duct through the first air duct. In the regeneration air duct, the gas sequentially passes through the first cooling area, the first regeneration area and the desorption area, and is finally discharged from the system. The gas can be fully treated in each processing stage. In addition, in the regeneration process, the gas is cooled by the first cooling area, then dehumidified and regenerated by the first regeneration area, and finally the pollutants adsorbed on the rotary wheel are removed by the desorption area. Not only the regeneration efficiency of the rotary wheel is improved, but also the service life of the rotary wheel is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 is a structural schematic view of the air treatment system according to an embodiment of the present application.

[0062] Figure 2 is another structural schematic view of the air treatment system according to an embodiment of the present application.

[0063] Figure 3 is another structural schematic view of the air treatment system according to an embodiment of the present application.

[0064] Figure 4 is another structural schematic view of the air treatment system according to an embodiment of the present application.

[0065] In the figure: 2, H2S removal wheel; 21, adsorption zone; 22, desorption zone; 3, first dehumidification wheel; 31, first dehumidification zone; 32, first regeneration zone; 33, first cooling zone; 4, second dehumidification wheel; 41, second dehumidification zone; 42, second regeneration; 51, fresh air duct; 511, air valve; 512, first filter; 513, front surface cooler; 52, return air duct; 61, first air duct; 611, supply air fan; 62, regeneration air duct; 621, regeneration fan; 622, heating assembly; 63, second air duct; 64, supply air duct; 641, rear surface cooler; 642, second filter; 7, third dehumidification wheel; 71, third dehumidification zone; 72, third regeneration zone; 8, middle surface cooler. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will be simplified or omitted.

[0067] The words expressing position and direction described in the present application are explained by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0068] In order to solve the problems of H2S gas removal and low dew point environment maintenance in the production process of solid-state batteries, the present application details an air treatment system that can effectively remove H2S gas, ensure a low dew point production environment, and as much as possible reduce energy consumption. Specifically, the air to be treated and fresh air are mixed, and the front surface cooler 513 is used for cooling treatment. Then, the mixed gas is effectively removed of H2S gas by the H2S removal wheel 2. Next, after further cooling by the middle surface cooler 8, the gas enters the dehumidification wheel for dehumidification treatment. At the same time, the regeneration zone of the dehumidification wheel is heated by the regeneration air duct 62, and the desorption zone 22 of the H2S removal wheel 2 is desorbed, ensuring the continuous and efficient operation of the wheel, achieving a substantial reduction in energy consumption and an improvement in environmental benefits.

[0069] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail with examples. It should be understood that the specific examples described herein are only used to explain the present application and should not be used to limit the present application.

[0070] Example 1

[0071] In order to be able to remove H2S gas, maintain a low dew point environment, and ensure that the wheel can continue to operate efficiently, with reference to Figure 1 The air treatment system of the utility model includes: air inlet duct, treatment air duct and H2S removal wheel 2 and first dehumidification wheel 3 arranged in sequence. Further, in order to cool the gas in the air duct, the air treatment system of the utility model further includes: at least one middle air cooler 8.

[0072] The H2S removal wheel 2 is a wheel for removing hydrogen sulfide (H2S) gas. The H2S removal wheel 2 of the utility model includes an adsorption zone 21 and a desorption zone 22. The adsorption zone 21 adsorbs H2S in the gas flowing through it; the desorption zone 22 causes the H2S adsorbed on the wheel to desorb by heating or reducing pressure, etc., regenerating the wheel, and facilitating subsequent processing or discharge.

[0073] The first dehumidification wheel 3 is used to remove moisture from the air, achieving dehumidification of the air. The first dehumidification wheel 3 of the utility model includes a first dehumidification zone 31, a first regeneration zone 32, and a first cooling zone 33. When humid air passes through the first dehumidification zone 31, the wheel material (usually a hygroscopic material) will adsorb moisture from the air, thereby reducing the humidity of the air. The first cooling zone 33 is used to reduce the temperature of the wheel. By heating the gas flowing through the first regeneration zone 32, the adsorption of moisture on the wheel can be reduced, causing it to desorb from the surface of the wheel, thereby regenerating the wheel. The desorbed moisture can be collected and processed by a subsequent processing system (such as a condenser or a drainage system).

[0074] The middle air cooler 8 is arranged between the H2S removal wheel 2 and the first dehumidification wheel 3. The middle air cooler 8 transfers heat from the gas to a cooling medium (such as water or air) through heat exchange, thereby achieving cooling of the gas. Cooling helps to reduce the temperature and humidity of the gas, improving the efficiency of the first dehumidification wheel 3.

[0075] The upstream of the air inlet duct of the utility model is used for gas entry, and the downstream of the air inlet duct is connected to the adsorption zone 21. The gas is a mixture of fresh air and air to be processed.

[0076] Further, the air inlet duct includes: fresh air duct 51 and return air duct 52.

[0077] In application, the upstream of the fresh air duct 51 is used for fresh air to enter, such as outdoor fresh air. The upstream of the return air duct 52 is used for air to be processed to enter, specifically, the upstream of the return air duct 52 is connected to a solid-state battery production room or a solid-state battery production workshop. The downstream of the return air duct 52 is combined with the downstream of the fresh air duct 51 and then connected to the adsorption zone 21, so that the mixed gas containing fresh air and air to be processed enters the adsorption zone 21.

[0078] In practical application, the fresh air duct 51 is sequentially provided with: an air valve 511, a first filter 512 and / or a front air cooler 513. The air valve 511 is used to adjust the proportion of fresh air entering. Specifically, by accurately controlling the opening degree of the air valve 511, it can be ensured that the fresh air component in the mixed gas meets specific processing requirements, such as humidity, temperature or air quality standards. The first filter 512 is used to filter impurities such as dust, hair, etc. in the fresh air, so as to protect the subsequent equipment and improve the overall air quality of the system. The front air cooler 513 is used to cool the fresh air of the fresh air duct 51.

[0079] The processing air duct of the utility model includes first air duct 61 and regeneration air duct 62. Further, the processing air duct further includes: second air duct 63 and air supply air duct 64.

[0080] The first air duct 61 connects the adsorption area 21 and the regeneration air duct 62, and is used to send the gas processed by the adsorption area 21 into the regeneration process. Specifically, the upstream of the first air duct 61 is connected with the adsorption area 21, and the downstream of the first air duct 61 is connected with the upstream of the regeneration air duct 62. The regeneration air duct 62 is sequentially connected with the first cooling area 33, the first regeneration area 32 and the desorption area 22, and is used to regenerate and process the gas, including the cooling, regeneration and desorption steps. The downstream of the regeneration air duct 62 is used to discharge the processed gas. The second air duct 63 connects the downstream of the first air duct 61 and the first dehumidification area 31, and is used to return part of the gas to the first dehumidification area 31 for further processing. The air supply air duct 64 connects the first dehumidification area 31 and the upstream of the return air duct 52, and is used to send the dehumidified gas back to the front end of the system or the indoor. Specifically, the upstream of the second air duct 63 is connected with the downstream of the first air duct 61, and the downstream of the second air duct 63 is connected with the first dehumidification area 31; the upstream of the air supply air duct 64 is connected with the first dehumidification area 31, and the downstream of the air supply air duct 64 is connected with the upstream of the return air duct 52, preferably, the downstream of the air supply air duct 64 is connected with the solid-state battery production room or the solid-state battery production workshop.

[0081] In use, the gas passing through the first air duct 61 removes hydrogen sulfide through the adsorption area 21, and then the gas enters the regeneration process through the regeneration air duct 62, and the other gas passes through the second air duct 63 and the supply air duct 64 in turn, and enters the dehumidification process and the return air process. Preferably, a supply air fan 611 is arranged downstream of the first air duct 61, and the supply air fan 611 is used to make the gas flow through the first air duct 61, the regeneration air duct 62, and the second air duct 63, and send the processed gas into the regeneration air duct 62 and the second air duct 63. In actual application, the regeneration air duct 62 is provided with a regeneration fan 621 and / or a heating assembly 622. Preferably, the regeneration air duct 62 is sequentially provided with the regeneration fan 621 and the heating assembly 622. The regeneration fan 621 is used to drive the gas to flow through the regeneration air duct 62; and the heating assembly 622 is used to heat the gas flowing through the regeneration air duct 62 to promote the desorption of water in the regeneration process. Preferably, the heating assembly 622 includes a plurality of heaters which are arranged at equal intervals on the regeneration air duct 62. More preferably, at least one heater is arranged on each side of each rotating wheel. The supply air duct 64 is provided with a rear surface cooler 641 and / or a second filter 642. Preferably, the supply air duct 64 is sequentially provided with the rear surface cooler 641 and the second filter 642. The rear surface cooler 641 is used to cool the dehumidified gas to meet the specific temperature requirements of the supply air duct 64. The second filter 642 is used to filter impurities in the gas in the supply air duct 64 to improve the quality of the gas sent into the solid-state battery production room or the solid-state battery production workshop.

[0082] Embodiment 2

[0083] In order to further improve the dehumidification effect, on the basis of Embodiment 1, the air treatment system of the present embodiment further comprises a second dehumidification rotating wheel 4. Referring to Figure 2 , the second dehumidification rotating wheel 4 is arranged on the side of the H2S removal rotating wheel 2 away from the first dehumidification rotating wheel 3, forming a sequential arrangement, i.e., the second dehumidification rotating wheel 4, the H2S removal rotating wheel 2, and the first dehumidification rotating wheel 3 are sequentially arranged.

[0084] Referring to Figure 2 , a middle surface cooler 8 is arranged between the H2S removal rotating wheel 2 and the first dehumidification rotating wheel 3, and a middle surface cooler 8 is arranged between the second dehumidification rotating wheel 4 and the H2S removal rotating wheel 2. The middle surface cooler 8 is used to cool the gas flowing through it, which helps to improve the dehumidification efficiency and the regeneration efficiency. The cooled gas is more easily to release water in the dehumidification area, and more easily to desorb water in the regeneration area.

[0085] Referring to Figure 2The second dehumidifying runner 4 comprises a second dehumidifying zone 41 and a second regenerating zone 42. The second regenerating zone 42 is connected to the regenerating air duct 62 for regenerating the dehumidifying medium in the second dehumidifying zone 41. One side of the second dehumidifying zone 41 is connected to the downstream of the air inlet duct, and the other side of the second dehumidifying zone 41 is connected to the upstream of the first air duct 61. Preferably, in order to further remove the moisture in the mixed gas, one side of the second dehumidifying zone 41 is connected to the air duct downstream of the junction of the return air duct 52 and the fresh air duct 51, and the other side of the second dehumidifying zone 41 is connected to the upstream of the first air duct 61.

[0086] In application, the fresh air is cooled by the front surface cooler 513, and then mixed with the air to be treated in the air inlet duct, and then preliminarily dehumidified by the second dehumidifying zone 41 of the second dehumidifying runner 4. The air preliminarily dehumidified enters the first air duct 61, and then cooled by a middle surface cooler 8, and then enters the H2S removal runner for removing hydrogen sulfide. The air treated by the H2S removal runner is cooled by the middle surface cooler 8 again, and then enters the regenerating air duct 62, and then sequentially enters the first cooling zone 33 and the first regenerating zone 32 for regenerating treatment, and finally discharged from the downstream of the regenerating air duct 62; or enters the first dehumidifying runner 3 for deep dehumidification, and then enters the supply air duct 64, and then treated by the rear surface cooler 641 and the second filter 642, and finally enters the solid-state battery production room or the solid-state battery production workshop from the downstream of the supply air duct 64.

[0087] Embodiment 3

[0088] The difference between this embodiment and embodiment 2 is the positional relationship between the second dehumidifying zone 41 and the air ducts.

[0089] Reference Figure 3 In order to improve the dehumidification effect on the fresh air, one side of the second dehumidifying zone 41 is connected to the downstream of the fresh air duct 51, and the other side of the second dehumidifying zone 41 is connected to the downstream of the return air duct 52. The air duct downstream of the junction of the return air duct 52 and the fresh air duct 51 is connected to the upstream of the first air duct 61.

[0090] Embodiment 4

[0091] In order to control the humidity of the air entering the solid-state battery production room or the solid-state battery production workshop, and maintain a low dew point environment in the solid-state battery production room or the solid-state battery production workshop, on the basis of embodiments 1-3, the air treatment system of this embodiment further comprises at least one third dehumidifying runner 7.

[0092] Reference Figure 4The third dehumidification rotating wheel 7 is arranged between the H2S removing rotating wheel 2 and the first dehumidification rotating wheel 3. In application, the number of the third dehumidification rotating wheel 7 can be increased or decreased according to actual needs by the person skilled in the art. Further, in order to improve the dehumidification effect of the system, a middle surface cooler 8 is arranged between every two rotating wheels. In actual application, the third dehumidification rotating wheel 7 comprises a third regeneration area 72 and a third dehumidification area 71. The third regeneration area 72 is connected with the regeneration air duct 62; and the third dehumidification area 71 is connected with the upstream of the second air duct 63.

[0093] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model. The person skilled in the art can change, modify, replace and transform the above-mentioned embodiments without departing from the principles and purposes of the utility model in the range of the utility model. All these changes should belong to the protection range of the utility model claim.

Claims

1. An air handling system characterized by, Comprise: H2S removal wheel (2) and first dehumidification wheel (3) arranged in sequence, the H2S removal wheel (2) comprising adsorption zone (21) and desorption zone (22), the first dehumidification wheel (3) comprising first dehumidification zone (31), first regeneration zone (32) and first cooling zone (33); Air inlet duct, the upstream of the air inlet duct is used for gas entering, the downstream of the air inlet duct is connected with the adsorption zone (21); Treatment air duct, the treatment air duct comprises first air duct (61) and regeneration air duct (62), the upstream of the first air duct (61) is connected with the adsorption zone (21), the downstream of the first air duct (61) is connected with the upstream of the regeneration air duct (62), the regeneration air duct (62) is sequentially connected with the first cooling zone (33), the first regeneration zone (32) and the desorption zone (22) in sequence, the downstream of the regeneration air duct (62) is used for the gas to be discharged.

2. The air treatment system of claim 1, wherein, The air inlet duct comprises: Fresh air duct (51), the upstream of the fresh air duct (51) is used for fresh air entering; Return air duct (52), the upstream of the return air duct (52) is used for air to be treated entering, the downstream of the return air duct (52) is connected with the downstream of the fresh air duct (51) after merging, so that the gas containing fresh air and air to be treated enters the adsorption zone (21).

3. The air treatment system of claim 2, wherein, The treatment air duct further comprises: Second air duct (63), the upstream of the second air duct (63) is connected with the downstream of the first air duct (61), the downstream of the second air duct (63) is connected with the first dehumidification zone (31); Supply air duct (64), the upstream of the supply air duct (64) is connected with the first dehumidification zone (31), the downstream of the supply air duct (64) is connected with the upstream of the return air duct (52).

4. The air treatment system of claim 2, wherein, The air treatment system further comprises: Second dehumidification wheel (4), the second dehumidification wheel (4) is arranged on the side of the H2S removal wheel (2) away from the first dehumidification wheel (3).

5. The air treatment system of claim 4, wherein, The second dehumidification wheel (4) comprises: Second regeneration (42) zone, the second regeneration (42) zone is connected with the regeneration air duct (62); Second dehumidification zone (41), one side of the second dehumidification zone (41) is connected with the air duct after the downstream of the return air duct (52) and the downstream of the fresh air duct (51) merging, the other side of the second dehumidification zone (41) is connected with the upstream of the first air duct (61).

6. The air treatment system of claim 4, wherein, The second dehumidification wheel (4) comprises: Second regeneration (42) zone, the second regeneration (42) zone is connected with the regeneration air duct (62); Second dehumidification zone (41), one side of the second dehumidification zone (41) is connected with the downstream of the fresh air duct (51), the other side of the second dehumidification zone (41) is connected with the downstream of the return air duct (52).

7. The air treatment system of claim 3, wherein, The air treatment system further comprises: At least one third dehumidification wheel (7), the third dehumidification wheel (7) is arranged between the H2S removal wheel (2) and the first dehumidification wheel (3).

8. The air treatment system of claim 7, wherein, The third dehumidification wheel (7) comprises: A third regeneration zone (72) is connected to the regeneration air duct (62); A third dehumidification zone (71) is connected to the upstream of the second air duct (63).

9. The air treatment system of claim 1, wherein, The regeneration air duct (62) is provided with: A regeneration air fan (621) for making the gas flow through the regeneration air duct (62); and / or, A heating assembly (622) for heating the gas flowing through the regeneration air duct (62).

10. The air treatment system of claim 3, wherein, The supply air duct (64) is provided with: A rear surface cooler (641) for cooling the gas of the supply air duct (64); and / or, A second filter (642) for filtering impurities in the gas.

11. The air treatment system of claim 2, wherein, The fresh air duct (51) is provided with: An air valve (511) for adjusting the proportion of fresh air entering; and / or, A first filter (512) for filtering impurities in the fresh air; and / or, A front surface cooler (513) for cooling the fresh air of the fresh air duct (51).

12. The air treatment system of claim 3, wherein, The downstream of the first air duct (61) is provided with a supply air fan (611) for making the gas flow through the first air duct (61), the regeneration air duct (62) and the second air duct (63).

13. The air treatment system of claim 1, wherein, The air treatment system further comprises: At least one middle surface cooler (8) arranged between two rotating wheels.

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