A double-circulation rotary adsorption device, an adsorption method and an adsorption system thereof

Abstract

The application relates to a double-circulation rotary adsorption device, an adsorption method and an adsorption system thereof, which comprise a fresh air treatment pipeline, a rotary module comprising two rotary wheels arranged side by side, a first air supply pipeline, a second air supply pipeline, a first circulation system which is composed of the first air supply pipeline-the second air supply pipeline-the workshop-the first air supply pipeline to form a circulation loop and realize the recycling of workshop air, and a second circulation system which is composed of the fresh air treatment pipeline-the first air supply pipeline-the fourth air supply pipeline-the regenerated return air pipeline-the fresh air treatment pipeline to form a circulation loop. The application has the advantages of compact and reasonable structure, convenient operation, a deep dehumidification system of the double-rotary module and the double-circulation system, and the successful solution of the hydrogen sulfide control problem in the solid-state battery workshop. The system adopts a hierarchical circulation strategy: the first circulation system realizes the recycling rate of workshop return air; and the second circulation system innovatively mixes the regenerated return air with fresh air, so that the low-humidity characteristics of the regenerated return air are utilized to improve the cooling efficiency of the first rotary wheel.

Description

Technical Field

[0001] This invention relates to the field of dehumidification technology, and in particular to a dual-circulation rotary adsorption device, adsorption method and adsorption system. Background Technology

[0002] In the production process of solid-state batteries, sulfides such as lithium sulfide (Li2S) and phosphorus pentasulfide (P2S5) are generated. These sulfides have poor air stability and readily react with moisture in the air to produce highly toxic hydrogen sulfide gas. The presence of hydrogen sulfide poses a serious threat to the production environment and the health of workers. Therefore, strict dehumidification treatment must be carried out in the solid-state battery production workshop to ensure a safe production environment.

[0003] Through in-depth research and practice, we have found that maintaining the dew point temperature in the workshop at -60℃ can effectively inhibit the generation of hydrogen sulfide, thereby ensuring a clean and safe production environment. Currently, workshops on the market employ various dehumidification technologies, such as cooling dehumidification and rotary dehumidification. These technologies can reduce the humidity of the entire workshop to the dew point of -60℃, meeting production requirements to a certain extent.

[0004] However, we can still detect the presence of hydrogen sulfide during actual production. This is mainly because the activities of materials, personnel, and production equipment in the workshop generate moisture, which continuously replenishes the workshop air, making it difficult to maintain a stable dew point of -60°C for extended periods. To ensure the long-term stability of the workshop dew point, we must ensure that the dew point of the air entering the workshop is below -60°C.

[0005] For example, Chinese patent CN118816299A discloses a multi-rotor ultra-low dew point adsorption device and a multi-rotor ultra-low dew point adsorption device system, which includes a first dehumidification rotor assembly and a second dehumidification rotor assembly; the second dehumidification rotor assembly includes a second adsorption zone, a second cooling zone, a second dehumidification rotor assembly regeneration heater, and a second regeneration zone; by mixing the ultra-low dew point air after multi-stage dehumidification with the air at the outlet of the second cooling zone, only a portion of the air originally entering the second dehumidification rotor assembly regeneration heater comes from the second cooling zone, reducing the airflow through the second cooling zone, thereby reducing the absolute humidity of the air passing through the regeneration heater.

[0006] While the aforementioned dehumidification system can achieve the required dew point of -60°C, its energy consumption is enormous. This is mainly because traditional systems exhaust all the air in the workshop during ventilation, and the humidity of this exhausted air is far lower than that of the newly introduced fresh air. The reason for exhausting this low-humidity air is that its sulfur content is too high to be usable. Therefore, the entire system requires a large amount of energy to reduce the humidity of the fresh air to meet the workshop's requirement for a low dew point.

[0007] To address this issue, a dual-circulation rotary adsorption device, adsorption method, and adsorption system are proposed, aiming to reduce energy consumption and improve production efficiency while ensuring dehumidification effect. Summary of the Invention

[0008] In response to the shortcomings of the existing production technologies, the applicant provides a dual-circulation rotary adsorption device, adsorption method and adsorption system, which successfully solves the problem of hydrogen sulfide control in solid-state battery workshops through a deep dehumidification system with dual-rotor modules and dual-circulation system.

[0009] The technical solution adopted in this invention is as follows:

[0010] A dual-circulation rotary adsorption device, comprising:

[0011] Fresh air handling ductwork is used to introduce low-temperature fresh air;

[0012] The rotary module includes a first rotary wheel and a second rotary wheel arranged side by side. Both rotary wheels are arranged in the direction of rotation with a dehumidification zone, a regeneration zone and a cooling zone. The dehumidification zone and the regeneration zone are connected to their front-end pipes to achieve adsorption and cooling respectively. The regeneration zones of the two rotary wheels are connected to the return air channel and the fourth air supply duct respectively and take away the adsorbate in the corresponding rotary wheel. The fourth air supply duct is connected to the return air channel and exhausts air to the outside together. At the same time, a regeneration return air duct connected to the fresh air treatment duct is also provided on the fourth air supply duct.

[0013] The first air supply duct is located between the dehumidification zones of the two rotors and is used to supply dehumidified fresh air.

[0014] The second air supply duct connects to the first air supply duct and delivers airflow to the workshop.

[0015] The first circulation system includes a circulation loop consisting of a first air supply duct, a second air supply duct, a workshop, a third air supply duct, and a second impeller. In the first circulation system, the gas being transported flows in two directions, either clockwise or counterclockwise, through the second impeller.

[0016] The transported gas passes through the second rotor and the workshop in a clockwise or counterclockwise direction, thus achieving the recycling of workshop air;

[0017] The second circulation system consists of a fresh air handling duct, a first air supply duct, a fourth air supply duct, a regeneration return duct, and a fresh air handling duct, forming a unidirectional circulation loop to achieve the recycling of return air.

[0018] In one embodiment, the fresh air handling pipeline includes a fresh air duct, on which multiple surface coolers are sequentially distributed to gradually cool the fresh air, and a first regenerative fan is provided to enhance the air volume, and a first filter is provided to filter the airflow.

[0019] In one embodiment, in one of the flow directions, the conveyed gas passes sequentially through a first air supply duct, a second impeller, a second air supply duct, a workshop, and a third air supply duct before connecting to the first air supply duct.

[0020] In one embodiment, in another flow direction, the delivered gas passes sequentially through a first air supply duct, a third air supply duct, a workshop, a second air supply duct, and a second impeller before connecting to the first air supply duct.

[0021] In one embodiment, the dehumidification zone of the first rotor is connected to the fresh air duct, and the first cooling zone is connected to the fresh air duct through the first regeneration pipeline to cool the first rotor and remove some of the adsorbate. The airflow after passing through the first cooling zone passes through the first regeneration heater and then connects to the regeneration zone of the first rotor to desorb and dehumidify the first rotor.

[0022] In one embodiment, the first air supply duct is equipped with a second regenerator fan to enhance the air volume.

[0023] In one embodiment, the dehumidification zone of the second rotor is connected to the first air supply duct, and the second cooling zone is connected to the first air supply duct through the second regeneration duct to cool the second rotor and remove some of the adsorbate. The airflow passing through the second cooling zone is then heated by the second regeneration heater and enters the regeneration zone of the second rotor to desorb and dehumidify the second rotor.

[0024] In one embodiment, a thermostat is provided on the second air supply duct to regulate the temperature of the airflow.

[0025] In one embodiment, a second filter for filtering the gas is provided on the first air supply duct.

[0026] In one embodiment, the second air supply duct passes through the second dehumidification zone of the second rotor and splits into two paths. One path mixes with the first air supply duct and flows into the third air supply duct, while the other path passes through the cooling zone of the second rotor and sequentially passes through the second regeneration zone of the second rotor to connect with the fourth air supply duct.

[0027] In one embodiment, in the second circulation system, the airflow passing through the second rotor regeneration zone is transported through the fourth air supply duct, and the fourth air supply duct is combined with the duct passing through the first rotor cooling zone and discharged outward together. The regeneration return air duct is located in the section before the fourth air supply duct and the first cooling zone duct are combined. The regeneration return air duct is connected to the first regeneration fan in the fresh air duct. The section of the fourth air supply duct located before the regeneration return air duct is equipped with a fourth regeneration fan to enhance the airflow.

[0028] In one embodiment, each of the pipelines is equipped with a regulating damper to control the air volume, and the regeneration return air pipeline is equipped with a second regulating damper to control the air volume entering the first regeneration fan, so as to ensure that the concentration of hydrogen sulfide in the mixed fresh air is below 10 mg / m³. 3 .

[0029] In one embodiment, each of the pipelines is equipped with a detection sensor for detecting air volume, temperature, dew point, moisture content, and hydrogen sulfide concentration.

[0030] According to claim 3, in the first rotary adsorption device, the central angle of the regeneration zone is greater than that of the cooling zone, the central angle of the regeneration zone ranges from 30° to 120°, and the central angle of the cooling zone ranges from 15° to 90°.

[0031] In one embodiment, in the second rotor, the central angle of the regeneration zone is greater than or equal to the central angle of the cooling zone, and the central angle of the regeneration zone ranges from 15° to 90°.

[0032] An adsorption method utilizing the aforementioned dual-circulation rotary adsorption device includes the following steps:

[0033] S1. Introduce low-temperature fresh air and gradually cool it down;

[0034] S2. The cooled fresh air is dehumidified by passing it through the dehumidification zone of the first rotor and the dehumidification zone of the second rotor in sequence. When passing through the dehumidification zone of the first rotor, the dew point of the gas is reduced to below -60℃.

[0035] S3. After being dehumidified by the second rotor, the gas is transported to the workshop. When passing through the dehumidification zone of the second rotor, the gas dew point is reduced to -70°C.

[0036] S4. Mix the return air from the workshop with the airflow after it has been dehumidified by the first rotor, and then dehumidify it again through the dehumidification zone of the second rotor to form the first circulation system, ensuring that the gas dew point at each node of the first circulation system is below -60℃.

[0037] S5. Part of the airflow passing through the second rotor regeneration zone is returned for regeneration. The hydrogen sulfide concentration in the regenerated return air is less than 10 mg / m3. It is mixed with fresh air to reduce the dew point of the fresh air, so that the dew point of the mixed fresh air is close to -10℃, forming a second circulation system and realizing the reuse of return air.

[0038] S6. The mixed low-dew-point fresh air enters the cooling zone of the first rotor through the regulating air valve, carrying away the adsorbate in the cooling zone. It then mixes with the return air in the fourth air supply duct and passes through the first regeneration zone of the first rotor.

[0039] An adsorption method utilizing the aforementioned dual-circulation rotary adsorption device includes the following steps:

[0040] SS1. Introduce low-temperature fresh air and gradually cool it down;

[0041] SS2. The cooled fresh air is dehumidified by passing it through the dehumidification zone of the first rotor, ensuring that the gas dew point drops below -65°C when passing through the dehumidification zone of the first rotor.

[0042] SS3, and then the gas is transported to the workshop via a second regeneration fan;

[0043] SS4. After the return air from the workshop is cooled by the thermostat, it is delivered to the dehumidification zone of the second rotor to ensure that the dew point in the return air is below -70℃.

[0044] SS5. A portion of the return air passing through the second rotor mixes with the fresh air in the first air supply duct, further reducing the dew point delivered to the workshop to form the first circulation system, ensuring that the gas dew point at each node of the first circulation system is below -60℃.

[0045] SS6. Another part of the return air passing through the second rotor will return part of the airflow passing through the regeneration zone of the second rotor for regeneration. The hydrogen sulfide concentration in the regenerated return air is less than 10mg / m3, and it is mixed with fresh air to reduce the dew point of the fresh air, so that the dew point of the fresh air after mixing is close to -10℃, forming a second circulation system and realizing the reuse of return air.

[0046] SS7, the mixed low dew point fresh air enters the cooling zone of the first impeller through the regulating air valve, carrying away the adsorbate in the cooling zone, and mixes with the return air in the fourth air supply duct, and passes through the first regeneration zone of the first impeller.

[0047] An adsorption system comprising the aforementioned dual-circulation rotary adsorption device.

[0048] The beneficial effects of this invention are as follows:

[0049] This invention features a compact and rational structure, and is easy to operate. Through a deep dehumidification system with dual-rotor modules and a dual-circulation system, it successfully solves the problem of hydrogen sulfide control in solid-state battery workshops. The system employs a tiered circulation strategy: the first circulation system maximizes the reuse rate of workshop return air, and the second rotor performs secondary dehumidification to stabilize the dew point at -70℃; the second circulation system innovatively mixes regenerated return air with fresh air, utilizing its low humidity characteristics to improve the cooling efficiency of the first rotor, and also reduces the hydrogen sulfide concentration to 2 mg / m³ through dynamic air valve control. 3 The following solution perfectly balances the two core requirements of deep dehumidification and energy efficiency, providing an innovative solution for high-precision production environment control.

[0050] In addition, the present invention also has the following advantages:

[0051] This solution achieves precise dew point control of workshop air through an innovative three-stage surface cooler cooling system coupled with a dual-rotor adsorption coupling structure. In the fresh air treatment section, a three-stage surface cooler (first-stage, second-stage, and third-stage) with progressively decreasing cooling capacity is used. Combined with the first dehumidification zone of the first rotor and the second dehumidification zone of the second rotor, a dual-stage adsorption system is formed, resulting in a dew point of -60℃ for the airflow at P6, and an even lower dew point of -70℃ for the final airflow delivered to the workshop (at P13). This gradient dehumidification structure has two technical advantages: First, after the airflow treated by the first rotor (dew point -60℃) mixes with the workshop return air (dew point -60℃), further dehumidification and post-heating in the second rotor lower the dew point to -70℃, ensuring that the actual dew point in the workshop remains stable below the safe threshold. Second, the system is specially designed with a hydrogen sulfide concentration balancing mechanism; when the hydrogen sulfide content in the first air supply duct is 2 mg / m³... 3 4.67 mg / m³ of the workshop return air 3 After mixing, the concentration is controlled at 4.4 mg / m³ through regeneration treatment in the second rotor. 3 Combined with the thermodynamic effect of the thermostat, the generation reaction of hydrogen sulfide is effectively suppressed.

[0052] The system achieves multi-stage energy recovery and utilization by constructing a dual closed-loop structure of a first circulation system (workshop return air - first supply air duct - second rotary drum - workshop) and a second circulation system (regenerated return air - fresh air duct - rotary drum cooling zone - regeneration zone). Specifically, the first circulation system purifies the workshop exhaust air (dew point at P10 -60℃) through the second filter and mixes it with the ultra-dry airflow (dew point at P6 -60℃) in the first supply air duct. The mixture undergoes secondary dehumidification through the second rotary drum, a process that saves approximately 35% energy compared to 100% fresh air treatment. The innovation of the second circulation system lies in the fact that the regenerated return air (dew point at P16 -26.3℃) is mixed with fresh air (dew point at P4 -1.1℃) after being controlled by the second regulating valve. This not only utilizes the waste heat from regeneration to preheat the fresh air but also enhances the dehumidification efficiency of the first cooling zone through the humidity gradient difference.

[0053] The optimized zoning design of the rotor module achieves a dynamic balance between adsorption and regeneration processes through differentiated zoning configurations of the first and second rotors (first rotor regeneration zone central angle 30°-120°, cooling zone 15°-90°; second rotor regeneration zone 15°-90°). The first rotor employs a large-angle regeneration zone design to ensure complete desorption of the adsorbate during the high-temperature regeneration stage (first regeneration heater heats to 120-150℃). Meanwhile, the smaller regeneration zone angle (15°-90°) of the second rotor matches the precise temperature control of the thermostat (maintaining the airflow dew point at -70℃), ensuring deep dehumidification while avoiding energy waste caused by over-regeneration. This zoning optimization increases the rotor adsorption efficiency to 92% and reduces regeneration energy consumption by 18%. Simultaneously, the special angle design of the cooling zone (15°-90° for the first rotor) optimizes the airflow path, resulting in a gentler temperature gradient on the rotor surface and extending the lifespan of the adsorbent material by approximately 30%.

[0054] The dynamic airflow control and pollutant co-control system incorporates intelligent regulating valves (first regulating valve, second regulating valve, etc.) in each pipeline, combined with the frequency conversion control of the fourth regeneration fan, to achieve dynamic airflow balance. A pollutant emission path was specifically designed to address the characteristics of hydrogen sulfide generation: by monitoring the hydrogen sulfide concentration in the second regeneration pipeline using sensors, when the concentration approaches a threshold, the return air entering the regeneration return air pipeline is reduced. This staged emission strategy ensures that the hydrogen sulfide concentration in the system exhaust air remains below 10 mg / m³. 3 Environmental standards. Attached Figure Description

[0055] Figure 1 This is a system flow diagram of the adsorption device of the present invention.

[0056] Figure 2 This is a parameter table of air in each pipeline of the adsorption device of the present invention.

[0057] Figure 3 This is a system flow diagram of the adsorption device in Embodiment 3 of the present invention.

[0058] Figure 4 This is a parameter table of air in each pipeline of the adsorption device in Embodiment 3 of the present invention.

[0059] Figure 5 This is a schematic diagram of the structure of the first rotating wheel in this invention.

[0060] Figure 6 This is a schematic diagram of the structure of the second rotating wheel in this invention.

[0061] in:

[0062] 10. Fresh air duct; 20. First rotary drum; 30. First supply air duct; 40. Second rotary drum; 50. Second supply air duct; 60. Workshop; 70. Third supply air duct; 80. First regeneration duct; 90. Return air duct; 100. Second regeneration duct; 110. Fourth supply air duct; 120. Regeneration return air duct; 130. Fifth supply air duct; 140. Sixth supply air duct; 150. Seventh supply air duct;

[0063] 101. First filter; 102. First surface cooler; 103. Second surface cooler; 104. First regeneration fan; 105. Third surface cooler;

[0064] 201. First dehumidification zone; 202. First cooling zone; 203. First regeneration zone;

[0065] 301. Second regeneration fan; 302. Second filter; 303. Fourth surface cooler;

[0066] 401. Second dehumidification zone; 402. Second cooling zone; 403. Second regeneration zone;

[0067] 501. Thermostat;

[0068] 801, First regulating air valve; 901, First regeneration heater; 902, Third regeneration fan; 1001, Second regeneration heater; 1101, Fourth regeneration fan; 1102, Second regulating air valve. Detailed Implementation

[0069] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0071] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0072] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0073] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0074] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0075] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0076] As described in the background art, during the solid-state battery manufacturing process, the air humidity in the workshop and the personnel and materials in the workshop will generate a certain amount of moisture. If the dew point of the airflow is too high, it will also promote the generation of harmful gases such as hydrogen sulfide, which will damage the health of workers and production equipment.

[0077] Meanwhile, traditional dehumidification systems, when exhausting air, will discharge all the air in the workshop to meet the workshop's air quality requirements, due to the high hydrogen sulfide content in the airflow.

[0078] Based on the above considerations, in order to solve the problem of excessively high dew points in traditional workshops, and at the same time avoid the huge energy loss caused by the return air from the vented workshop.

[0079] Figure 1 A system flow diagram of the adsorption device of this application is shown.

[0080] Figure 2 This application illustrates the airflow quality parameters monitored in each pipeline. The monitored data includes airflow, temperature, dew point, moisture content, and hydrogen sulfide content. P represents the sensor's location, and P0-P16 represent the airflow quality monitored by sensors at different locations. This application uses multiple sensors to monitor the dehumidification effect of the adsorption system. The number of sensors can be selected appropriately in actual use. Furthermore, this application... Figure 2 The low dew point and hydrogen sulfide content in the table are because this application is used in solid-state battery workshops, where strict control at a dew point of -60°C is required. However, depending on actual usage, if the dehumidification equipment does not have high dew point requirements, the adsorption equipment in this embodiment can also be used to control the hydrogen sulfide content below the national standard threshold, achieving the reuse of exhaust and return air while complying with national and industry standards. This embodiment can dehumidify workshops with different dew point requirements.

[0081] Example 1: Please refer to Figures 1-6 This embodiment discloses a dual-circulation rotary adsorption device, which includes a fresh air treatment duct, a rotary module (including a first rotary wheel 20 and a second rotary wheel 40), a first air supply duct 30, a second air supply duct 50, a first circulation system (composed of the first air supply duct 30 - the second air supply duct 50 - the workshop 60 and the third air supply duct 70 - the first air supply duct 30), and a second circulation system. Through multiple dehumidification, cooling, and heating treatments, deep dehumidification and precise control of the workshop air are achieved, effectively suppressing the generation of hydrogen sulfide. At the same time, the dual circulation also improves energy utilization efficiency.

[0082] Specifically, the fresh air handling duct is used to introduce low-temperature fresh air, providing a fresh airflow source for the entire adsorption system. A first surface cooler 102, a second surface cooler 103, and a third surface cooler 105 are sequentially distributed on the fresh air duct 10, with the cooling capacity of each surface cooler decreasing sequentially, gradually cooling the fresh air. Figure 2 As shown in the table data, after three stages of cooling, the temperature of the fresh air at P5 will reach 13℃. In particular, it is necessary to cool the high-temperature regenerated return air. At this temperature, the fresh air passing through the first cooling zone 202 can significantly reduce the temperature of the first impeller 20, thereby improving the dehumidification efficiency of the subsequent first dehumidification zone 201. Simultaneously, a first regeneration fan 104 is installed on the fresh air duct 10 to enhance airflow, ensuring that the fresh air can smoothly pass through the first impeller 20, and also facilitating the mixing and circulation of the subsequent regenerated return air. Furthermore, a first filter 101 is also installed on the fresh air duct 10 to filter the introduced fresh air, removing impurities and particulate matter from the airflow.

[0083] like Figure 1As shown, the rotary module in this embodiment includes a first rotary wheel 20 and a second rotary wheel 40 arranged side by side, with the first rotary wheel 20 being closer to the fresh air treatment duct than the second rotary wheel 40. Both rotary wheels are arranged in the direction of rotation with a dehumidification zone, a regeneration zone, and a cooling zone, and the dehumidification zone and the cooling zone are connected to their fresh air treatment ducts to achieve adsorption and cooling functions, respectively.

[0084] Specifically, the first impeller 20 is sequentially provided with a first dehumidification zone 201, a first regeneration zone 203, and a first cooling zone 202 along the rotation direction. The first dehumidification zone 201 is connected to the fresh air duct 10 and is used to adsorb impurities, such as moisture, in the fresh air. The purified fresh air is then delivered to the first air supply duct 30. The first cooling zone 202 is connected to the fresh air duct 10 through the first regeneration duct 80 to cool the first impeller 20. The airflow after passing through the first cooling zone 202 is then heated by the first regeneration heater 901 and connected to the first regeneration zone 203 of the first impeller 20 for high-temperature regeneration of the first impeller 20. The airflow passing through the first regeneration zone 203 is discharged through the return air duct 90, on which a third regeneration fan 902 is installed to enhance the exhaust effect.

[0085] The second rotor 40 is sequentially arranged with a second dehumidification zone 401, a second regeneration zone 403, and a second cooling zone 402 along the rotation direction. The second dehumidification zone 401 is connected to the first air supply duct 30 and is used to adsorb impurities, such as moisture, in the airflow of the first air supply duct 30. The airflow after passing through the second dehumidification zone 401 is transported to the workshop 60 through the second air supply duct 50, and a thermostat 501 is installed on the second air supply duct 50 to regulate the temperature and humidity of the airflow. At the same time, the return air in the workshop 60 is connected to the second regeneration fan 301 in the first air supply duct 30 through the third air supply duct 70 to realize the reuse of the workshop exhaust air. A second filter 302 is installed at the rear end of the second regeneration fan 301 in the first air supply duct 30 to filter impurities in the airflow to achieve the effect of airflow reuse.

[0086] The second cooling zone 402 is connected to the first air supply duct 30 via the second regeneration pipe 100 to cool the second rotor 40. The airflow passing through the second cooling zone 402 is then heated by the second regeneration heater 1001 and enters the second regeneration zone 403 of the second rotor 40 for high-temperature regeneration treatment of the second rotor 40.

[0087] In this embodiment, the first air supply duct 30 is located between the two rotary dehumidification zones and is used for secondary cooling and dehumidification of the dehumidified fresh air. A fourth surface cooler 303 is installed on the first air supply duct 30 to further cool the fresh air. Simultaneously, a second regenerator fan 301 is installed in the first air supply duct 30 to further increase the airflow and ensure that the fresh air can smoothly pass through the dehumidification zone. To improve the utilization rate of the return airflow, a second filter 302 is also installed on the first air supply duct 30 to improve airflow quality, especially the filtration of the workshop return airflow. Figure 2 The table data shows that the dew point at point P6 of the airflow entering the first air supply duct 30 after passing through the first dehumidification zone 201 is -60℃. This dew point can prevent the moisture in the airflow from coming into contact with the sulfides in the workshop return air to produce hydrogen sulfide, and also ensure that the airflow entering the second rotor 40 can also maintain a dew point of -60℃.

[0088] In this embodiment, the second air supply duct 50 connects to the dehumidification zone of the second rotary wheel 40 and delivers the airflow to the workshop 60 after temperature and humidity adjustment. A thermostat 501 is installed on the second air supply duct 50 to adjust the temperature and humidity of the airflow. Figure 2 As can be seen from page 13 of the table, after temperature and humidity adjustment, the dew point of the airflow is -70℃. Even if the personnel and materials in the workshop generate some moisture, the dew point of -70℃ can still meet the workshop's requirements for airflow temperature and humidity. Furthermore, it ensures that the dew point of the workshop's return air will not drop too low, thus affecting the subsequent reuse of the workshop's return air.

[0089] In this embodiment, the first circulation system consists of a first air supply duct 30 - a second rotor 40 - a second air supply duct 50 - a workshop 60 and a third air supply duct 70 - a first air supply duct 30 forming a circulation loop, that is, the gas is as follows Figure 1 As shown, the air passes through the second rotor 40 in a clockwise direction, realizing the recycling of workshop air. Through the first circulation system, the return air in workshop 60 can be treated and then sent back into workshop 60, improving airflow utilization efficiency and reducing energy consumption. Figure 2 The table shows that the dew point at P10 is -60℃ and the hydrogen sulfide content is 4.67 mg / m³. 3 This also happens to be the critical dew point for hydrogen sulfide gas production. Although the hydrogen sulfide content is relatively high, the dew point at P6 is also -60℃. Therefore, after mixing, the hydrogen sulfide content will decrease to 4.4 mg / m³. 3 It can still meet the needs of the workshop. Therefore, under the action of the first circulation system, the workshop return air can be effectively utilized to achieve energy conservation and emission reduction, and greatly improve the energy utilization rate.

[0090] In this embodiment, the second circulation system consists of a fresh air handling duct, a first supply air duct 30, a second regeneration duct 100, a fourth supply air duct 110, a regeneration return air duct 120, and a fresh air handling duct, forming a circulation loop to achieve the recycling of return air. In the first circulation system, combined with... Figure 2 The dew point at P12 in the table is -60℃, and the hydrogen sulfide content is 4.4 mg / m3. Meanwhile, after the airflow passes through the second cooling zone 402 and the second regeneration zone 403 of the second rotor 40, the dew point at P16 is -26.3℃, and the hydrogen sulfide content is 5 mg / m3. This is because the moisture content in the cooling zone 402 and regeneration zone 403 of the second rotor 40 is relatively high, so the sulfides in the airflow react with the moisture to generate some hydrogen sulfide. The dew point and hydrogen sulfide content at P3 are the same as at P16, compared to the dew point at P2. At point P3, the dew point value is significantly low. Direct discharge would result in a huge waste of energy. Therefore, the second regulating valve 1102 controls the airflow in the regeneration return air duct 120, reusing the exhaust return air. After mixing with fresh air, the overall dew point value and hydrogen sulfide concentration decrease. Simultaneously, the third surface cooler 105 in this embodiment is located at the rear end of the first regeneration fan 104, thereby cooling the mixed air. See point P4, where the dew point value is -1.1℃ and the hydrogen sulfide content is 2mg / m³. 3 This low-temperature, low-dew-point mixed fresh air can better remove moisture from the first cooling zone 202, improving the dehumidification effect in the first dehumidification zone 201. Through the second circulation system, the dehumidified and heated return air can be sent back into the fresh air handling duct, mixed with the fresh air, and then processed, further improving the airflow utilization efficiency and dehumidification effect. At the same time, it should be noted that although multiple surface coolers are set up here to cool the mixed fresh air, in actual operation, the energy consumption to lower the dew point to below 0°C is much greater than the energy consumption to directly cool the fresh air. Therefore, in a comprehensive comparison, this method can reduce energy consumption.

[0091] In this embodiment, the fourth air supply duct 110 can also be connected to the regeneration zone 403 of the second rotor 40 to transport the airflow passing through the second regeneration zone 403 of the second rotor 40. The fourth air supply duct 110 and the exhaust duct passing through the first cooling zone 202 of the first rotor 20 are merged and introduced into the regeneration zone 403 of the second rotor 40 together, and then exhaust the air outward. Furthermore, before merging with the exhaust duct of the first cooling zone 202, the fourth air supply duct 110 is also equipped with a regeneration return air duct 120. The regeneration return air duct 120 is connected to the first regeneration fan 104 of the fresh air duct 10 to realize the reuse of return air. At the same time, the fourth air supply duct 110 is equipped with a fourth regeneration fan 1101 before the regeneration return air duct 120 to further enhance the airflow and facilitate the utilization of return air in the regeneration return air duct 120. The regeneration return air duct 120 is equipped with a second regulating air valve 1102 (or a three-way valve for branch control) to effectively control the air intake into the regeneration return air duct 120, which is used to control the airflow into the first regeneration fan 104 to ensure that the concentration of hydrogen sulfide in the mixed fresh air is less than 10 mg / m3.

[0092] In the first return air circulation of this embodiment, combined with Figure 2 As shown in the table, in this embodiment, the dew point of the airflow entering the workshop 60 is -70°C through multiple dehumidification and cooling treatments and thermostat 501. At this time, even if the personnel and materials in the workshop 60 generate a certain amount of moisture, the dew point in the workshop 60 will be lower than -60°C, thereby inhibiting the generation of hydrogen sulfide.

[0093] In addition, the dew point of the return air in workshop 60 is -60℃, at which point the hydrogen sulfide content is 4.67 mg / m³. 3 The dew point of the airflow delivered through the first air supply duct 30 is -60℃, which further suppresses the generation of hydrogen sulfide. Furthermore, the hydrogen sulfide content in the airflow delivered through the first air supply duct 30 is 2 mg / m³. 3 After mixing with the return air from workshop 60, the dew point of the airflow remains unchanged, while the hydrogen sulfide content of the mixed airflow is 4.4 mg / m³. 3 After passing through the second rotating wheel 40 and the temperature controller 501, it still meets the requirements of workshop 60;

[0094] Part of the airflow from the first supply air duct 30 will be transported to the return air duct 90 through the second regeneration duct 100. Since the reaction of hydrogen sulfide is irreversible, part of the airflow needs to be discharged to avoid exceeding the hydrogen sulfide standard after long-term circulation.

[0095] In the second return air circulation of this embodiment, after the airflow in the first supply air duct 30 is transported to the return air channel 90 via the second regeneration duct 100, the airflow will come into contact with the moisture-containing airflow in the second cooling zone 402 of the second rotor 40, thereby increasing the hydrogen sulfide content in the airflow to 4.7 mg / m³.3 Furthermore, when the airflow passes through the second regeneration zone 403 of the second rotor 40 again, the hydrogen sulfide content in the airflow further increases to 5 mg / m³ due to the presence of moisture in the second regeneration zone 403. 3 By adjusting the air valve, a portion of the airflow is controlled to enter the regeneration return air duct 120 and connected to the fresh air duct 10, further utilizing this portion of airflow with a low dew point, saving energy. At the same time, the hydrogen sulfide content in the airflow is reduced after mixing with the fresh air, which can also meet the requirements for subsequent utilization. That is, the return airflow is utilized and the airflow quality requirements are met, greatly reducing energy consumption. In addition, by setting the first regulating air valve 801 on the first regeneration duct 80, a portion of the airflow in the fresh air duct 10 is controlled to pass through the first cooling zone 202, which can dilute the hydrogen sulfide in the return air duct 90, meeting environmental protection requirements, and also reducing the temperature of the first rotor 20. The first rotor 20 has a better dehumidification effect at low temperature, which improves the dehumidification effect of the first dehumidification zone 201. At the same time, after the fresh air is mixed with the regeneration return air duct 120, the mixed fresh air has a low dew point and low humidity, which can further reduce the processing load of the first dehumidification zone 201. This is also the benefit of setting the first rotor 20 into 3 zones in this application.

[0096] Each of the aforementioned pipelines is equipped with a regulating damper to control the air volume, which, in conjunction with the regenerator fan, facilitates air volume control.

[0097] Example 2: Figure 1 As shown, unlike Embodiment 1, a seventh air supply duct 150 is also provided on the fresh air duct 10, which directly crosses the first impeller 20 and is connected to the first air supply duct 30. A corresponding regulating air valve is provided on the seventh air supply duct 150. Since the dew point in the fresh air duct 10 is relatively low after mixing, it can meet the workshop requirements for a period of time after being dehumidified directly by the second impeller. Moreover, by setting the seventh air supply duct 150, it is also convenient to maintain, repair or replace the first impeller 20.

[0098] In addition, in this embodiment, a fifth air supply duct 130 directly leads to the workshop 60 is provided on the first air supply duct 30, and a sixth air supply duct 140 exhausts air to the outside on the workshop 60, which is used for ventilation when the second rotor 40 is maintained, repaired or replaced, and when the workshop is not in operation.

[0099] Meanwhile, in this embodiment, maintenance, repair or replacement of the first rotor 20 and the second rotor 40 can be carried out without stopping the machine, and the replacement can be performed during operation, which improves work efficiency.

[0100] Example 3: As Figure 3 and Figure 4As shown, the difference between this embodiment and embodiment 1 is that in the first circulation system of this embodiment, the gas passes through the second rotor 40 counterclockwise. That is, the gas is delivered sequentially through the first air supply pipe 30, the third air supply pipe 70, the workshop 60, the second air supply pipe 50 and the second rotor 40 before being connected to the first air supply pipe 30. In this embodiment, it can be used in workshops with lower dew point requirements, and it can also be used in single-rotor adsorption equipment.

[0101] Meanwhile, in practical use, in workshops with low dew point requirements, the adsorption equipment of Example 1 can be easily modified to achieve the desired result. Only a portion of the structure in the first circulation system needs to be changed to achieve the modification, thereby greatly reducing the conversion cost and increasing the utilization value.

[0102] In this embodiment, a thermostat is installed on the second air supply duct 50 to cool the gas in order to meet the dehumidification requirements of the second impeller 40.

[0103] In another embodiment, a second filter 302 for filtering the gas is provided on the first air supply duct 30. In actual use, a filter can also be provided on the second air supply duct.

[0104] In this embodiment, the second air supply duct 50 passes through the second dehumidification zone 401 of the second rotor 40 and splits into two paths. One path mixes with the first air supply duct 30 and flows into the third air supply duct 70. The other path passes through the second cooling zone 402 of the second rotor 40 and sequentially passes through the second regeneration zone 403 of the second rotor 40 to connect with the fourth air supply duct 110, thereby realizing the return of air to the outside.

[0105] Example 4: Figure 5 and Figure 6 As shown, based on Example 1, this example defines the partitions of the first rotor 20 and the second rotor 40 to better improve the dehumidification effect.

[0106] like Figure 5 As shown, in the first rotor 20 of this embodiment, the central angle of the regeneration zone 203 is larger than that of the cooling zone 202. The central angle of the regeneration zone 203 ranges from 30° to 120°, while that of the cooling zone 202 ranges from 15° to 90°, thus achieving a dynamic balance between adsorption and regeneration processes. The first rotor 20 adopts a large-angle regeneration zone 203 design to ensure complete desorption of moisture during the high-temperature regeneration stage (when the first regeneration heater 901 heats the water to 120-150°C).

[0107] like Figure 6As shown, in this embodiment, in the second rotor 40, the central angle of the regeneration zone 403 is greater than or equal to the central angle of the cooling zone 402. The central angle of the regeneration zone 403 ranges from 15° to 90°. The smaller angle of the second regeneration zone 403 in the second rotor 40 (15°-90°) reduces the contact area between the return airflow and the second regeneration zone 403, avoiding the influence of moisture in the second regeneration zone 403 on sulfides in the return air and reducing the generation of hydrogen sulfide. This ensures the deep dehumidification requirement while avoiding energy waste caused by over-regeneration. Since the moisture content in the second rotor 40 is very low, the area of ​​the second regeneration zone 403 of the second rotor 40 does not need to be very large.

[0108] In another embodiment, setting the central angle range of the second regeneration zone 403 and the second cooling zone 402 of the second rotor 40 to the same 45° improves the return air throughput efficiency and also enables moisture release. Furthermore, since the return air from the second rotor 40 also passes through the first regeneration zone 203 of the first rotor 20, it satisfies the moisture discharge requirement of the second rotor 40. This zoning optimization increases the rotor adsorption efficiency to 92% and reduces regeneration energy consumption by 18%.

[0109] Meanwhile, the special angle design of the cooling zone 202 (the first rotating wheel 20 is 15°-90°) makes the temperature gradient on the surface of the rotating wheel more gradual, extending the service life of the adsorption material by about 30%.

[0110] Example 5: This example discloses a dual-circulation rotary adsorption method. This method utilizes a dual-circulation rotary adsorption device from Example 1. This adsorption device includes a fresh air treatment duct, a rotary module (comprising a first rotary wheel 20 and a second rotary wheel 40), a first air supply duct 30, a second air supply duct 50, and related pipes and components constituting the first and second circulation systems. This method achieves deep dehumidification and precise control of workshop air, effectively suppresses the generation of hydrogen sulfide, and improves energy utilization efficiency.

[0111] The specific implementation steps are as follows:

[0112] S1. Fresh air introduction and cooling treatment:

[0113] Low-temperature fresh air is introduced through the fresh air handling duct to provide a fresh air source for the entire adsorption system.

[0114] A first surface cooler 102, a second surface cooler 103, and a third surface cooler 105 are sequentially installed on the fresh air duct 10, with the cooling capacity of the multiple surface coolers decreasing sequentially to gradually cool the fresh air. After three stages of cooling, the fresh air temperature drops to 13°C, providing favorable conditions for subsequent dehumidification.

[0115] S2, First Rotor 20 Dehumidification and Regeneration:

[0116] Fresh air passes through the first dehumidification zone 201 of the first rotor 20, adsorbing the moisture in the fresh air and lowering the gas dew point to below -60℃.

[0117] S3, Second Rotor 40 Dehumidification and Workshop 60 Air Supply:

[0118] After being dehumidified by the first rotor 40, the airflow enters the first air supply duct 30 and undergoes secondary cooling and dehumidification treatment through the fourth surface cooler 303.

[0119] The airflow in the first air supply duct 30 enters the second dehumidification zone 401 of the second rotor 40, where it adsorbs moisture from the airflow.

[0120] After passing through the second dehumidification zone 401, the airflow is delivered to the workshop 60 through the second air supply duct 50 to ensure that the dew point is below -70℃.

[0121] S4, First Circulation System:

[0122] The return air in workshop 60 is connected to the second regenerator 301 in the first air supply duct 30 through the third air supply duct 70, so as to realize the reuse of workshop exhaust air.

[0123] The first circulation system consists of a circulation loop formed by the first air supply duct 30, the second air supply duct 50, the workshop 60, and the third air supply duct 70, back to the first air supply duct 30. This improves airflow utilization efficiency, reduces energy consumption, and ensures that the gas dew point in each link of the first circulation system is below -60°C, preventing the formation of hydrogen sulfide from sulfides. This reduces hydrogen sulfide production in the first circulation system. Figure 2 As shown in the table, apart from a small amount of hydrogen sulfide emitted from workshop 60, the overall hydrogen sulfide content will not increase. In addition, some gas will be discharged from the first circulation system, thus ensuring that the hydrogen sulfide content in the first circulation system is within a reasonable range, enabling long-term continuous operation.

[0124] S5, Second Circulation System:

[0125] The second cooling zone 402 of the second impeller 40 is connected to the first air supply duct 30 via the second regeneration pipe 100, cooling the second impeller 40 and removing some moisture. The airflow passing through the second cooling zone 402 is then heated by the second regeneration heater 1001 before entering the second regeneration zone 403 of the second impeller 40 for desorption and dehumidification, ensuring that the dew point after passing through the second impeller 40 is not lower than -20℃ and the hydrogen sulfide concentration is lower than 10mg / m³. The airflow then passes through the regeneration return air duct 120 and connects to the first regeneration fan 104 of the fresh air duct 10, enabling the reuse of the return air and realizing energy utilization in the second circulation system. Simultaneously, in the second circulation system, after the return air and fresh air are mixed, it is ensured that the dew point of the fresh air is close to -10℃ and the hydrogen sulfide concentration is lower than 5mg / m³.3 This facilitates continued reuse in the future.

[0126] Meanwhile, since the dew point of each part of the first circulation system is below -60 degrees Celsius and the overall moisture content is low, even if the return air from workshop 60 passes through the second dehumidification zone 401 of the second rotor, the moisture content in the second rotor 40 will not be too high. Therefore, when the second regeneration pipeline 100 passes through the cooling zone 402 and regeneration zone 403 of the second rotor 40, its dew point will not rise significantly and can still reach -26.3°C. At the same time, since the dew point rise is small, the amount of hydrogen sulfide generated is small. This is the main reason why the workshop return air can be used for regeneration circulation in this embodiment. It is because the dew point value of each link in the entire adsorption equipment system is at a low level, so the amount of hydrogen sulfide generated is also low. After the return air is mixed with the fresh air, the overall hydrogen sulfide concentration will be diluted and reduced. However, the low dew point of the return air can greatly reduce the dew point of the fresh air, which greatly saves energy.

[0127] S6. Reuse of mixed fresh air;

[0128] The mixed fresh air comes into contact with the first cooling zone 202 of the first rotor 20 through the first regeneration pipe 80. Since the mixed fresh air has a dew point of 0°C, it is more able to remove the moisture in the first rotor 20, thereby improving the dehumidification effect on the dehumidification zone 201 of the first rotor 20.

[0129] After being cooled, the airflow is heated by the first regeneration heater 901 and then connected to the first regeneration zone 203 of the first rotor 20 to desorb and dehumidify the first rotor 20.

[0130] Another portion of the gas from the fourth air supply duct 110 is combined with the gas from the duct passing through the first cooling zone 202 and then exhausted outwards together.

[0131] The second regulating valve 1102 controls the air intake in the regeneration return air duct 120, reusing the exhaust return air and mixing it with fresh air to reduce the overall dew point value and hydrogen sulfide concentration.

[0132] In this embodiment, each pipeline is equipped with a regulating damper to control the air volume, which, together with the regenerator fan, facilitates air volume control.

[0133] By adjusting the air valves and regeneration fans, the airflow entering each area is controlled to ensure that the concentration of hydrogen sulfide in the mixed fresh air is below 10 mg / m³. 3 Requirements.

[0134] The dual-circulation rotary adsorption method in this embodiment achieves deep dehumidification and precise control of workshop air through multiple dehumidification, cooling, and heating processes, effectively suppressing the generation of hydrogen sulfide. Simultaneously, the dual-circulation system improves airflow utilization efficiency and energy efficiency, achieving energy conservation and emission reduction.

[0135] Example 6: This example discloses another dual-circulation rotary adsorption method. This method utilizes a dual-circulation rotary adsorption device from Example 3. This adsorption device includes a fresh air handling duct, a rotary module (comprising a first rotary wheel 20 and a second rotary wheel 40), a first air supply duct 30, a second air supply duct 50, and related pipes and components constituting the first and second circulation systems. This method achieves deep dehumidification and precise control of workshop air, effectively suppressing the generation of hydrogen sulfide and improving energy utilization efficiency.

[0136] Specifically, the steps include the following:

[0137] SS1. Low-temperature fresh air is introduced through the fresh air duct 10 and gradually cooled by passing through the first filter 101, the first surface cooler 102 and the second surface cooler 103 in sequence.

[0138] SS2. The cooled fresh air is dehumidified by passing it through the first dehumidification zone 201 of the first rotor 20, ensuring that the gas dew point drops below -65°C when passing through the first dehumidification zone 201.

[0139] SS3. The dehumidified gas is transported to the first air supply duct 30 by the first regeneration fan 104, and then to the workshop 60.

[0140] SS4. The return air from workshop 60 is sent to thermostat 501 through return air duct 90 for cooling, and then sent to the second dehumidification zone 401 of the second rotor 40 to ensure that the dew point in the return air is below -70℃.

[0141] SS5. A portion of the return air passing through the second rotor 40 mixes with the fresh air in the first air supply duct 30, further reducing the dew point delivered to the workshop 60, forming the first circulation system, ensuring that the gas dew point at each node of the first circulation system is below -60℃.

[0142] SS6. Another portion of the return air passing through the second rotor 40 will be regenerated through the second regeneration pipeline 100, and the part of the airflow passing through the second rotor regeneration zone 403 will be regenerated. The hydrogen sulfide concentration in the regenerated return air is less than 10 mg / m³. 3 It is mixed with fresh air to lower the dew point of the fresh air, so that the dew point of the mixed fresh air is close to -10℃, forming a second circulation system to realize the reuse of return air;

[0143] SS7. The mixed low dew point fresh air enters the first cooling zone 202 of the first impeller 20 through the first regulating air valve 801, taking away the moisture in the cooling zone, and then mixes with the return air in the fourth air supply duct 110, and passes through the first regeneration zone 203 of the first impeller 20.

[0144] The difference from Example 5 is that the gas flow direction relative to the second impeller 40 is different in the first circulation system.

[0145] Example 7: Based on Examples 1-3, this example discloses an adsorption system, which includes the adsorption equipment in Examples 1-3. By adopting this dual-circulation rotary adsorption equipment, the adsorption methods in Examples 5 and 6 are also used.

[0146] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A dual cycle rotary adsorption apparatus, characterized by, The application relates to a new air treatment pipeline for introducing new air, a rotating wheel module, a first rotating wheel and a second rotating wheel arranged side by side, the two rotating wheels are sequentially provided with a dehumidification zone, a regeneration zone and a cooling zone in the rotating direction, the dehumidification zone and the regeneration zone are connected with front pipeline sections to respectively realize adsorption and cooling, the regeneration zones of the two rotating wheels are connected with a return air channel and a fourth air supply pipeline, the fourth air supply pipeline is communicated with the return air channel, a regeneration return air pipeline communicated with the new air treatment pipeline is further arranged on the fourth air supply pipeline, the dehumidification zone of the first rotating wheel is communicated with a new air channel, the first cooling zone is connected with the new air channel through a first regeneration pipeline, the first rotating wheel is cooled and part of the adsorbent is removed, the airflow after the first cooling zone is connected with the regeneration zone of the first rotating wheel through a first regeneration heater, the first rotating wheel is desorbed and dehumidified, a first air supply pipeline is arranged between the dehumidification zones of the two rotating wheels and is used for conveying the dehumidified new air, a second air supply pipeline is connected with the first air supply pipeline and is used for conveying the airflow to a workshop, a first circulation system is formed by the first air supply pipeline, the second air supply pipeline, the workshop, a third air supply pipeline and the second rotating wheel, in the first circulation system, the conveyed gas passes through the second rotating wheel to form two flow directions in clockwise or counterclockwise directions, in one of the flow directions, the conveyed gas sequentially passes through the first air supply pipeline, the second rotating wheel, the second air supply pipeline, the workshop and the third air supply pipeline, and is connected with the first air supply pipeline again, in the other flow direction, the conveyed gas sequentially passes through the first air supply pipeline, the third air supply pipeline, the workshop, the second air supply pipeline and the second rotating wheel, and is connected with the first air supply pipeline again, a second circulation system is formed by the new air treatment pipeline, the first air supply pipeline, the fourth air supply pipeline, the regeneration return air pipeline and the new air treatment pipeline, adjustment air valves are arranged on the pipelines to control the air volume, a second adjustment air valve is arranged on the regeneration return air pipeline to control the air volume entering the first regeneration fan, so that the concentration of hydrogen sulfide in the mixed new air is lower than 10 mg / m3. The new air treatment pipeline comprises a new air channel, a plurality of surface coolers are sequentially arranged on the new air channel to gradually cool the new air, a first regeneration fan is arranged to increase the air volume, and a first filter is arranged to filter the airflow. The first air supply pipeline is provided with a second regeneration fan to increase the air volume. The dehumidification zone of the second rotating wheel is communicated with the first air supply pipeline, the second cooling zone is communicated with the first air supply pipeline through a second regeneration pipeline, the second rotating wheel is cooled and part of the adsorbent is removed, the airflow passing through the second cooling zone is heated by a second regeneration heater and then enters the regeneration zone of the second rotating wheel to desorb and dehumidify the second rotating wheel. A temperature regulator is arranged on the second air supply pipeline to adjust the temperature of the airflow. A second filter is arranged on the first air supply pipeline to filter the gas. ​ ​ ​ ​ ​ 2. A dual cycle rotary adsorption apparatus according to claim 1, wherein, ​ 3. A dual cycle rotary adsorption apparatus according to claim 1, wherein, ​ 4. A dual cycle rotary adsorption apparatus according to claim 1, wherein, ​ 5. A dual cycle rotary adsorption apparatus according to claim 1, wherein, ​ 6. A dual cycle rotary adsorption apparatus according to claim 1, wherein, ​ 7. A dual cycle rotary adsorption apparatus according to claim 1 wherein, The second air supply pipeline passes through the second rotary dehumidifier's second dehumidification area and is divided into two paths, one of which mixes with the first air supply pipeline and flows to the third air supply pipeline, and the other of which passes through the second rotary dehumidifier's cooling area and sequentially passes through the second rotary dehumidifier's second regeneration area and communicates with the fourth air supply pipeline.

8. A dual cycle rotary adsorption apparatus according to any one of claims 1 to 2, wherein, In the second circulation system, the air flow passing through the second rotary dehumidifier's regeneration area is transported through the fourth air supply pipeline, and the fourth air supply pipeline merges with the pipeline passing through the first rotary dehumidifier's cooling area to jointly exhaust air outside, and the regeneration return air pipeline is arranged before the merging of the fourth air supply pipeline and the first cooling area pipeline, and the regeneration return air pipeline is connected with the first regeneration fan of the fresh air channel, and a fourth regeneration fan is arranged on the fourth air supply pipeline before the regeneration return air pipeline to enhance the air force.

9. A dual cycle rotary adsorption apparatus according to claim 1 wherein, Detection sensors are arranged on each of the pipelines to detect air volume, temperature, dew point, humidity content, and hydrogen sulfide concentration.

10. A dual cycle rotary adsorption apparatus according to claim 1 wherein, In the first rotary dehumidifier, the central angle of the regeneration area is greater than that of the cooling area, and the central angle of the regeneration area ranges from 30° to 120°, and the central angle of the cooling area ranges from 15° to 90°.

11. A dual cycle rotary adsorption apparatus according to claim 1, wherein, In the second rotary dehumidifier, the central angle of the regeneration area is greater than or equal to that of the cooling area, and the central angle of the regeneration area ranges from 15° to 90°.

12. A method of adsorption utilizing a double cycle wheel adsorption apparatus of claim 4, characterized by: The method comprises the following steps: S1, introducing low-temperature fresh air and gradually cooling the fresh air; S2, the cooled fresh air is sequentially dehumidified through the dehumidification area of the first rotary dehumidifier and the dehumidification area of the second rotary dehumidifier, and the gas dew point is reduced to below -60℃ when passing through the dehumidification area of the first rotary dehumidifier; S3, the air flow after the dehumidification treatment of the second rotary dehumidifier is transported to the workshop, and the gas dew point is reduced to -70℃ when passing through the dehumidification area of the second rotary dehumidifier; S4, the return air of the workshop is mixed with the air flow after the dehumidification treatment of the first rotary dehumidifier, and is dehumidified again through the dehumidification area of the second rotary dehumidifier to form a first circulation system, and the gas dew point of each node of the first circulation system is ensured to be below -60℃; S5, part of the air flow passing through the regeneration area of the second rotary dehumidifier is regenerated with return air, the hydrogen sulfide concentration in the regenerated return air is less than 10 mg / m3, and the regenerated return air is mixed with fresh air to reduce the dew point of the mixed fresh air, so that the dew point of the mixed fresh air is close to -10℃, forming a second circulation system, and realizing the reuse of return air; S6, the mixed low-dew-point fresh air enters the cooling area of the first rotary dehumidifier through an air valve for control, carries away the adsorbate of the cooling area, mixes with the return air in the fourth air supply pipeline, and passes through the first regeneration area of the first rotary dehumidifier.

13. A method of adsorption utilizing a dual cycle rotary adsorption apparatus of claim 7, characterized by: The method comprises the following steps: SS1, introducing low-temperature fresh air and gradually cooling the fresh air; SS2, the cooled fresh air is dehumidified through the dehumidification area of the first rotary dehumidifier, and the gas dew point is ensured to be reduced to below -65℃ when passing through the dehumidification area of the first rotary dehumidifier; SS3, the air flow is transported to the workshop through the second regeneration fan; SS4, the return air of the workshop is cooled by a temperature regulator and then transported to the dehumidification area of the second rotary dehumidifier, and the dew point of the return air is ensured to be below -70℃; SS5, part of the return air passing through the second rotary dehumidifier is mixed with the fresh air in the first air supply pipeline to further reduce the dew point of the air flow transported to the workshop, forming a first circulation system, and the gas dew point of each node of the first circulation system is ensured to be below -60℃; SS6, another part of the return air passing through the second rotating wheel will regenerate the air flow part of the return air passing through the second rotating wheel regeneration area, the hydrogen sulfide concentration in the regenerated return air is less than 10 mg / m3, and is mixed with fresh air to reduce the dew point of the fresh air, so that the dew point of the mixed fresh air is close to-10℃, forming a second circulation system, realizing the reuse of return air; SS7, the mixed low dew point fresh air enters the cooling area of the first rotating wheel by adjusting the air valve, carries away the adsorbent in the cooling area, and is mixed with the return air in the fourth air supply pipeline and passes through the first regeneration area of the first rotating wheel.

14. An adsorption system characterized by: It comprises a double-circulation rotating wheel adsorption equipment in claim 1.

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