Medium-temperature rotating wheel dehumidification system

Abstract

The utility model discloses a medium-temperature rotating wheel dehumidification system which comprises a treatment adsorption air path, a regeneration desorption air path, at least one medium-temperature dehumidification rotating wheel, a first heat exchange component, a water chilling unit and a second heat exchange component. To-be-treated gas flows in the treatment adsorption air path in the direction from the treatment air inlet side to the treatment air outlet side. According to the medium-temperature rotating wheel dehumidification system, the water chilling unit is used for cooling and dehumidifying to-be-treated gas of the treatment adsorption air path, low-grade hot water is provided for the heat pump hot water unit, waste heat recovery of the water chilling unit is achieved, the system is used for dehumidifying through the medium-temperature dehumidification rotating wheel with the low regeneration temperature, and the energy consumption is reduced. By means of the heat pump hot water unit, hot water discharged by the heat pump hot water unit can heat the regeneration and desorption air path, desorption and regeneration of the medium-temperature dehumidification rotating wheel regeneration area can be achieved, desorption and regeneration of the dehumidification rotating wheel regeneration area can be completed without heating regeneration gas in an electric heating or steam heating mode, the comprehensive COP and energy efficiency of the system are improved, and the energy-saving proportion is large.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial dehumidification, in particular to a medium-temperature rotary dehumidification system. Background Art

[0002] Rotary dehumidification is an important dehumidification means that cannot be ignored in some current industrial fields, such as the pharmaceutical, lithium battery, and chemical industries. Due to the strict requirements for the moisture content in the production process environment, the dehumidification rotor plays an important role, but at the same time, the cost of dehumidification (energy consumption) is very high. Whether it is the country's advocacy for energy-saving transformation or the continuous development of enterprises, cost reduction and efficiency improvement have always been important links.

[0003] Currently, the regeneration temperature of the high-temperature regeneration rotor used in the dehumidification rotor is in the range of 120 - 140 °C, and electric heating or steam heating is used for regeneration. The regeneration energy method is limited and the regeneration energy consumption is high. Therefore, there is an urgent need for a rotary dehumidification system with better energy-saving effect to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a medium-temperature rotary dehumidification system for improving the energy-saving effect of the rotary dehumidification system.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A medium-temperature rotary dehumidification system, comprising:

[0007] A processing adsorption air path, in which the gas to be processed flows in the processing adsorption air path from the processing air inlet side to the processing air outlet side;

[0008] A regeneration desorption air path, in which the regeneration gas flows in the regeneration desorption air path from the regeneration air inlet side to the regeneration exhaust side;

[0009] At least one medium-temperature dehumidification rotor, which has a processing area and a regeneration area. The processing adsorption air path passes through the processing area of the medium-temperature dehumidification rotor for dehumidifying and adsorbing the gas to be processed, and the regeneration desorption air path passes through the regeneration area of the medium-temperature dehumidification rotor for desorbing the regeneration area;

[0010] A first heat exchange component, which is arranged on the air inlet side of the processing adsorption air path for cooling the gas to be processed;

[0011] A chiller, which has an evaporation side and a condensation side. The evaporation side of the chiller is connected to the first heat exchange component and is used to supply cold water to the first heat exchange component;

[0012] A second heat exchange component, which is arranged on the air inlet side of the regeneration desorption air path for heating the regeneration gas;

[0013] A heat pump water heater, the heat pump water heater having an evaporation side and a condensation side, wherein the condensation side of the heat pump water heater is connected with a second heat exchange component and is used for supplying hot water to the second heat exchange component;

[0014] The condensation side of the chiller is connected to the evaporation side of the heat pump water heater and provides low-grade hot water for it.

[0015] Preferably, the medium-temperature dehumidification runner at least includes a first dehumidification runner and a second dehumidification runner along the flowing direction of the gas to be treated, for dehumidifying the gas to be treated, and the regeneration temperatures of the first dehumidification runner and the second dehumidification runner are 70-90 °C.

[0016] Preferably, the first heat exchange component includes a first surface cooler and a second surface cooler;

[0017] The chiller is respectively used for providing cold water at a temperature of T1 and cold water at a temperature of T2 for the first surface cooler and the second surface cooler, where T1 > T2;

[0018] The first surface cooler and the second surface cooler are sequentially arranged on the air inlet side of the treatment area of the medium-temperature dehumidification runner along the flowing direction of the gas to be treated, and are respectively used for performing primary cooling and dehumidification and secondary cooling and dehumidification on the air flow on the air inlet side of the treatment area of the medium-temperature dehumidification runner.

[0019] Preferably, the second heat exchange component includes a first hot water heat exchanger and a second hot water heat exchanger;

[0020] The first hot water heat exchanger is arranged on the air inlet side of the regeneration area of the second dehumidification runner along the flowing direction of the regeneration gas, for heating the regeneration gas on the air inlet side of the regeneration area of the second dehumidification runner, and the second hot water heat exchanger is arranged between the air outlet side of the regeneration area of the first dehumidification runner and the air inlet side of the regeneration area of the second dehumidification runner along the flowing direction of the regeneration gas, for heating the regeneration gas on the air inlet side of the regeneration area of the first dehumidification runner; and / or,

[0021] The water outlet end of the condensation side of the heat pump water heater is respectively connected to the water inlet ends of the first hot water heat exchanger and the second hot water heat exchanger, and the water inlet end of the condensation side of the heat pump water heater is respectively connected to the water outlet ends of the first hot water heat exchanger and the second hot water heat exchanger, so that the hot water discharged from the water outlet end of the condensation side of the heat pump water heater passes through the first hot water heat exchanger and the second hot water heat exchanger and then flows back to the heat pump water heater again.

[0022] Preferably, a first air flow driving component is arranged in the treatment adsorption air path, for enabling air to flow from one side of the treatment air inlet along the treatment adsorption air path to the side of the treatment air outlet; and / or,

[0023] The first air flow driving component at least includes a first processing fan and a second processing fan;

[0024] The first processing fan is arranged on the processing adsorption air path between the air outlet side of the first dehumidification runner processing area and the air inlet side of the second dehumidification runner processing area;

[0025] The second processing fan is arranged on the processing adsorption air path at the air outlet side of the second dehumidification runner processing area.

[0026] Preferably, a second air flow driving component is arranged in the regeneration and desorption air path for making air flow from the regeneration air inlet side along the regeneration and desorption air path to the regeneration air outlet side; and / or,

[0027] The second air flow driving component at least includes a first regeneration fan and a second regeneration fan;

[0028] The first regeneration fan is arranged on the regeneration and desorption air path between the air inlet side of the first dehumidification runner regeneration area and the air outlet side of the second dehumidification runner regeneration area;

[0029] The second regeneration fan is arranged on the regeneration and desorption air path at the air outlet side of the first dehumidification runner regeneration area.

[0030] Preferably, the first heat exchange component further includes a third surface cooler; the third surface cooler is arranged on the processing adsorption air path between the first dehumidification runner and the second dehumidification runner for cooling and dehumidifying the air flow at the air inlet side of the second dehumidification runner processing area; and / or,

[0031] The water outlet end of the evaporation side of the chiller for providing cold water at temperature T1 is connected to the water inlet end of the first surface cooler, and the water outlet end of the first surface cooler is connected to the water inlet end of the evaporation side of the chiller for providing cold water at temperature T1, so that the cold water at temperature T1 flows through the first surface cooler and then reflows into the chiller;

[0032] The water outlet end of the evaporation side of the chiller for providing cold water at temperature T2 is connected to the water inlet ends of the second surface cooler and the third surface cooler, and the water outlet ends of the second surface cooler and the third surface cooler are connected to the water inlet end of the evaporation side of the chiller for providing cold water at temperature T2, so that the cold water at temperature T2 flows through the second surface cooler and the third surface cooler and then reflows into the chiller.

[0033] Preferably, the processing adsorption air path further at least includes:

[0034] A primary filter, the primary filter is arranged on the processing adsorption air path close to the processing air inlet and on the side of the first surface cooler relative to the second surface cooler for filtering dust in the air flow entering the processing adsorption air path; and / or,

[0035] A water baffle, which is arranged between the second surface cooler and the first dehumidification rotating wheel for separating steam and water from the treated gas flowing through the first surface cooler and the second surface cooler; and / or,

[0036] A medium - efficiency filter, which is arranged on the treated adsorption air path on the exhaust side of the second treatment fan for filtering the treated gas to be discharged from the treated air side.

[0037] Preferably, the treated air inlet side of the treated adsorption air path and the regenerated exhaust side of the regeneration and desorption air path are on the same side, and the treated air outlet side of the treated adsorption air path and the regenerated air inlet side of the regeneration and desorption air path are on the same side; the low - grade hot water is hot water at 40°C to 50°C.

[0038] Preferably, the medium - temperature rotating wheel dehumidification system further includes at least:

[0039] A waste heat recovery water circuit, which has a water inlet side and a water outlet side;

[0040] The water inlet side of the waste heat recovery water circuit is connected to the water outlet end of the condensation side of the chiller and the water outlet end of the evaporation side of the heat pump water heater, and the water outlet side of the waste heat recovery water circuit returns to the water inlet end of the condensation side of the chiller; or, the water inlet side of the waste heat recovery water circuit is connected to the water outlet end of the condensation side of the chiller, the water outlet side of the waste heat recovery water circuit returns to the water inlet end of the condensation side of the chiller, and the water outlet end of the evaporation side of the heat pump water heater is connected to the water inlet end of the condensation side of the chiller;

[0041] A third heat exchange component, which is arranged on the waste heat recovery water circuit for recovering the heat of the waste heat recovery water circuit for external use; and / or,

[0042] The third heat exchange component includes at least one waste heat exchanger.

[0043] Compared with the prior art, the beneficial effects of the present utility model at least include:

[0044] This medium - temperature rotating wheel dehumidification system uses a chiller to cool and dehumidify the gas to be treated in the treated adsorption air path and provides low - grade hot water for the heat pump water heater, realizing the waste heat recovery of the chiller. This system uses a medium - temperature dehumidification rotating wheel with a lower regeneration temperature for dehumidification, so that the hot water discharged from the heat pump water heater can heat the regeneration and desorption air path, and can realize the desorption and regeneration of the regeneration area of the medium - temperature dehumidification rotating wheel. It can complete the desorption and regeneration of the regeneration area of the dehumidification rotating wheel without using electric heating or steam heating to heat the regeneration gas, improving the comprehensive COP and energy efficiency of the system and having a large energy - saving ratio. Description of the Drawings

[0045] Figure 1It is a schematic structural diagram of a medium-temperature rotary wheel dehumidification system according to an embodiment of the present utility model;

[0046] Figure 2 It is another schematic structural diagram of the medium-temperature rotary wheel dehumidification system according to an embodiment of the present utility model.

[0047] In the figure:

[0048] 1. Processing adsorption air path; 101. First surface cooler; 102. Second surface cooler; 103. First processing fan; 104. Second processing fan; 105. Third surface cooler; 106. Primary filter; 107. Water baffle; 108. Intermediate filter;

[0049] 2. Regeneration and desorption air path; 201. First hot water heat exchanger; 202. Second hot water heat exchanger; 203. First regeneration fan; 204. Second regeneration fan;

[0050] 3. Chiller;

[0051] 4. Heat pump hot water unit;

[0052] 5. First dehumidification rotary wheel;

[0053] 6. Second dehumidification rotary wheel;

[0054] 7. Waste heat exchanger. Detailed implementation manners

[0055] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present utility model will be more complete and comprehensive, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repeated description will be omitted.

[0056] The words expressing positions and directions described in the present utility model are all illustrated with reference to the accompanying drawings, but can be changed according to needs, and all the changes made are included in the protection scope of the present utility model.

[0057] Referring to Figure 1 and Figure 2 , the present utility model provides a medium-temperature rotary wheel dehumidification system, including: a processing adsorption air path 1, a regeneration and desorption air path 2, at least one medium-temperature dehumidification rotary wheel, a first heat exchange component, a chiller 3, a second heat exchange component, and a heat pump hot water unit 4.

[0058] Specifically, the gas to be treated flows in the treatment adsorption air path 1 from the treatment air inlet side to the treatment air outlet side; the regeneration gas flows in the regeneration desorption air path 2 from the regeneration air inlet side to the regeneration exhaust side; the treatment air inlet side of the treatment adsorption air path 1 and the regeneration exhaust side of the regeneration desorption air path 2 are located on the same side, and the treatment air outlet side of the treatment adsorption air path 1 and the regeneration air inlet side of the regeneration desorption air path 2 are located on the same side, so that the flow directions of the treatment gas and the regeneration gas are set in the opposite direction, which is adapted to the structure of the medium-temperature dehumidification runner itself. The gas to be treated can pass through the treatment area of the runner, and the adsorption material in the treatment area adsorbs and dehumidifies the gas to be treated. The regeneration gas can pass through the regeneration area of the runner to desorb and dehumidify the adsorption material passing through the regeneration area.

[0059] The medium-temperature dehumidification runner has a treatment area and a regeneration area. The treatment adsorption air path 1 passes through the treatment area of the medium-temperature dehumidification runner and is used for dehumidifying and adsorbing the gas to be treated. The regeneration desorption air path 2 passes through the regeneration area of the medium-temperature dehumidification runner and is used for desorbing the adsorption material in the regeneration area; As a preferred method, the medium-temperature dehumidification runner at least includes a first dehumidification runner 5 and a second dehumidification runner 6 along the flow direction of the gas to be treated for dehumidifying the gas to be treated. The regeneration temperatures of the first dehumidification runner 5 and the second dehumidification runner 6 are 70-90°C. This solution uses a medium-temperature dehumidification runner with a temperature of 70-90°C. Its regeneration temperature only needs to be 70-90°C. With the reduction of the regeneration temperature, other heating methods can be selected on the basis of existing electric heating and steam heating, which can improve the diversity of regeneration energy and alleviate the problem of high energy consumption when electric heating and steam heating provide regeneration energy.

[0060] The first heat exchange component is arranged on the air inlet side of the treatment adsorption air path 1 and is used for cooling the gas to be treated; the chiller 3 has an evaporation side and a condensation side. The evaporation side of the chiller 3 is connected to the first heat exchange component and is used for supplying cold water to the first heat exchange component; As a preferred method, the first heat exchange component may include a first surface cooler 101 and a second surface cooler 102; the chiller 3 is respectively used to provide cold water at temperature T1 and cold water at temperature T2 for the first surface cooler 101 and the second surface cooler 102, where T1 > T2; The first surface cooler 101 and the second surface cooler 102 are arranged in sequence on the air inlet side of the treatment area of the medium-temperature dehumidification runner along the flow direction of the gas to be treated, and are respectively used for primary cooling and dehumidification and secondary cooling and dehumidification of the air flow on the air inlet side of the treatment area of the medium-temperature dehumidification runner; When the gas to be treated enters the treatment adsorption air path 1 from the treatment air inlet side, the temperature of the treatment gas drops when passing through the first surface cooler 101, and a part of the water vapor condenses and precipitates. When passing through the second surface cooler 102, the temperature of the treatment gas further drops, and a part of the water vapor further condenses and precipitates, performing pre-dehumidification before passing through the medium-temperature dehumidification runner and reducing the dehumidification pressure of the medium-temperature dehumidification runner.

[0061] It should be noted that the evaporation side of the chiller 3 can provide at least two kinds of chilled water with temperatures of T1 and T2. By setting the water temperatures of the two different chilled waters, the efficiency of the chiller 3 can be improved to a certain extent, thereby saving energy. This is because the working principle of the chiller 3 is to reduce the temperature of air or other fluids through evaporative cooling. A lower evaporation temperature usually means higher energy efficiency, because the lower the evaporation temperature, the more heat can be carried away per unit of energy, achieving a better cooling effect.

[0062] As an example, calculated with a heat exchange temperature difference of 5°C, using the higher-temperature chilled water for partial refrigeration first can increase the average evaporation temperature. In this way, under the same working conditions, the operating energy consumption of the chiller 3 will be reduced, because the increase in the average evaporation temperature means higher system efficiency. The heat exchange temperature difference refers to the temperature difference between two fluids during the cooling process. In this example, the set heat exchange temperature difference is 5°C, which refers to the temperature difference between the temperature of the chilled water before entering the evaporator and the evaporation temperature inside the evaporator. If the chiller 3 has two working modes: refrigerating with chilled water at 7°C and refrigerating with chilled water with T1 of 14°C and T2 of 7°C, now consider two cases for the chiller 3:

[0063] Case 1: Directly use chilled water at 7°C for refrigeration. In this case, the evaporation temperature is 2°C.

[0064] Case 2: First use chilled water at 14°C for refrigeration, and then use chilled water at 7°C for refrigeration. In this case, the evaporation temperature in the first stage is 9°C, and the evaporation temperature in the second stage is 2°C.

[0065] By calculating the average value of the evaporation temperatures in the two stages, the average evaporation temperature can be obtained.

[0066] In Case 1, the average evaporation temperature is 2°C.

[0067] In Case 2, the average evaporation temperature is (2 + 9) / 2 = 5.5°C.

[0068] Since the average evaporation temperature in Case 2 has increased, under the same working conditions, the energy consumption of the chiller 3 will be reduced accordingly. The calculation of the specific savings ratio depends on the specific energy consumption model and actual usage. Therefore, the chiller 3 using chilled water at T1 of 14°C for refrigeration first and then using chilled water at T2 of 7°C for refrigeration has lower energy consumption and better energy-saving effect compared to the working mode of only using chilled water at 7°C for refrigeration. The specific structure of the chiller 3 can adopt known technologies and will not be elaborated here.

[0069] The second heat exchange component is arranged on the air inlet side of the regeneration and desorption air path 2 and is used to heat the regeneration gas; the heat pump water heater 4 has an evaporation side and a condensation side, and the condensation side of the heat pump water heater 4 is connected to the second heat exchange component and is used to supply hot water to the second heat exchange component; as a preferred mode, the second heat exchange component includes a first hot water heat exchanger 201 and a second hot water heat exchanger 202; the first hot water heat exchanger 201 is arranged on the air inlet side of the regeneration area of the second dehumidification rotor 6 along the flowing direction of the regeneration gas and is used to heat the regeneration gas on the air inlet side of the regeneration area of the second dehumidification rotor 6, and the second hot water heat exchanger 202 is arranged between the air outlet side of the regeneration area of the first dehumidification rotor 5 and the air inlet side of the regeneration area of the second dehumidification rotor 6 along the flowing direction of the regeneration gas and is used to heat the regeneration gas on the air inlet side of the regeneration area of the first dehumidification rotor 5. Among them, the condensation side of the heat pump water heater 4 can discharge hot water at about 95°C, and the temperature of the first hot water heat exchanger 201 and the second hot water heat exchanger 202 can be increased after flowing through them. The temperature of the regeneration gas can reach about 70-90°C after passing through the first hot water heat exchanger 201. The regeneration gas can be desorbed and dehumidified after passing through the regeneration area of the second dehumidification rotor 6. The subsequent regeneration gas can be heated again through the second hot water heat exchanger 202 to realize desorption and dehumidification of the regeneration area of the first dehumidification rotor 5.

[0070] As a preferred mode, the water outlet ends of the condensation side of the heat pump water heater 4 are respectively connected to the water inlet ends of the first hot water heat exchanger 201 and the second hot water heat exchanger 202, and the water inlet ends of the condensation side of the heat pump water heater 4 are respectively connected to the water outlet ends of the first hot water heat exchanger 201 and the second hot water heat exchanger 202, so that the hot water discharged from the water outlet end of the condensation side of the heat pump water heater 4 can flow back to the heat pump water heater 4 again after passing through the first hot water heat exchanger 201 and the second hot water heat exchanger 202. Specifically, a first water tank is arranged on one side of the heat pump water heater 4. The water outlet end of the condensation side of the heat pump water heater 4 is communicated with the first water tank and then respectively communicated with the water inlet ends of the first hot water heat exchanger 201 and the second hot water heat exchanger 202, and the water outlet ends of the first hot water heat exchanger 201 and the second hot water heat exchanger 202 are communicated with the first water tank and then communicated with the water inlet end of the condensation side of the heat pump water heater 4, so that the hot water discharged from the condensation side of the heat pump water heater 4 can flow back again after passing through the first hot water heat exchanger 201 and the second hot water heat exchanger 202, realizing the circulation of the water flow system on the condensation side of the heat pump water heater 4 without additional external water supply.

[0071] It should be noted that the water inlet ends of the first hot water heat exchanger 201 and the second hot water heat exchanger 202 share a pipeline to communicate with the first water tank, and a first liquid pump is installed on the shared pipeline, so as to provide driving force for the hot water flow inside the first hot water heat pump 201 and the second hot water heat pump 202.

[0072] The condensation side of the chiller 3 is connected to the evaporation side of the heat pump water heater 4 and provides low-grade hot water for it. The low-grade hot water is the hot water discharged from the condensation side of the chiller 3. It should be noted that the low-grade hot water refers to the waste heat energy with low grade and little energy, which is not valued by people. When the evaporation side of the chiller 3 uses 14°C and 7°C cold water, the hot water discharged from its condensation side is 40°C - 50°C.

[0073] Thus, this medium-temperature rotary dehumidification system uses the chiller 3 to cool and dehumidify the gas to be treated in the treatment adsorption air path 1 and provides low-grade hot water for the heat pump water heater 4, realizing the waste heat recovery of the chiller 3. This system uses a medium-temperature dehumidification rotary wheel with a relatively low regeneration temperature for dehumidification, enabling the hot water discharged from the heat pump water heater 4 to heat the regeneration desorption air path 2, and can realize the desorption and regeneration of the regeneration area of the medium-temperature dehumidification rotary wheel. Without using the method of electric heating or steam heating to heat the regeneration gas, the desorption and regeneration of the dehumidification rotary wheel regeneration area can be completed, improving the comprehensive COP and energy efficiency of this system, and having a large energy-saving ratio. Further, a medium-temperature energy-saving dehumidification rotary wheel is adopted. Different from the regeneration temperature of 120 - 140°C of the traditional high-temperature regeneration rotary wheel, the regeneration temperature of medium-temperature regeneration only needs 70 - 90°C, reducing the regeneration temperature of the system, which can expand other regeneration gas heating methods besides electric heating and steam heating, contributing to the energy saving and efficiency improvement of the system; at the same time, the chiller 3 of this system uses variable evaporation temperature to produce cold water of two water temperatures. While realizing the pre-cooling and dehumidification of the gas to be treated, it can increase the average evaporation temperature of the chiller 3, making the operation efficiency of the chiller 3 higher and the energy-saving effect better.

[0074] In a preferred embodiment, a first air flow driving component is arranged in the treatment adsorption air path 1 for making the air flow from the treatment air inlet side along the treatment adsorption air path 1 to the treatment air outlet side; as a preferred method, the first air flow driving component at least includes a first treatment fan 103 and a second treatment fan 104; wherein, the first treatment fan 103 is arranged on the treatment adsorption air path 1 between the air outlet side of the treatment area of the first dehumidification rotary wheel 5 and the air inlet side of the treatment area of the second dehumidification rotary wheel 6; the second treatment fan 104 is arranged on the treatment adsorption air path 1 at the air outlet side of the treatment area of the second dehumidification rotary wheel 6. It should be noted that the first treatment fan 103 and the second treatment fan 104 can also be installed at other positions in the treatment adsorption air path 1, which is not limited uniquely here, as long as it is ensured that under the cooperation of the two treatment fans, the treatment gas flowing from the treatment air inlet to the treatment air outlet side can be generated in the treatment adsorption air path 1.

[0075] In a preferred embodiment, a second air flow driving component is provided in the regeneration and desorption air duct 2 for causing air to flow from the regeneration air inlet side along the regeneration and desorption air duct 2 to the regeneration air outlet side; preferably, the second air flow driving component at least includes a first regeneration fan 203 and a second regeneration fan 204; wherein, the first regeneration fan 203 is arranged on the regeneration and desorption air duct 2 between the air inlet side of the regeneration area of the first dehumidifying rotor 5 and the air outlet side of the regeneration area of the second dehumidifying rotor 6; wherein, the second regeneration fan 204 is arranged on the regeneration and desorption air duct 2 at the air outlet side of the regeneration area of the first dehumidifying rotor 5. It should be noted that the first regeneration fan 203 and the second regeneration fan 204 can be installed in the regeneration and desorption air duct 2 or can adopt other installation positions, which is not uniquely limited here, as long as it is ensured that a regeneration gas flowing from the regeneration air inlet to the regeneration air outlet side can be generated in the regeneration and desorption air duct 2 under the cooperation of the two regeneration fans.

[0076] In a preferred embodiment, the first heat exchange component further includes a third surface cooler 105; the third surface cooler 105 is arranged on the processing and adsorption air duct 1 between the first dehumidifying rotor 5 and the second dehumidifying rotor 6 for cooling and dehumidifying the air flow on the air inlet side of the processing area of the second dehumidifying rotor 6. Among them, the third surface cooler 105 and the second surface cooler 102 are jointly connected to the cold water end of the evaporation side of the chiller 3, or a branch can be led out from the connecting pipeline between the evaporation side of the chiller 3 and the second surface cooler 102. The third surface cooler 105 and the second surface cooler 102 use the same temperature to cool and dehumidify the processed gas, and cool and dehumidify the processed gas entering the processing area of the second dehumidifying rotor 6 again to achieve the purpose of improving the dehumidification effect of the regeneration gas.

[0077] Preferably, the water outlet end of the evaporation side of the chiller 3 for providing cold water at temperature T1 is connected to the water inlet end of the first surface cooler 101, and the water outlet end of the first surface cooler 101 is connected to the water inlet end of the evaporation side of the chiller 3 for providing cold water at temperature T1, so that the cold water at temperature T1 returns to the chiller 3 again after passing through the first surface cooler 101; specifically, a second water tank is arranged on one side of the chiller 3. The water outlet end of the evaporation side of the chiller 3 for providing cold water at temperature T1 is communicated with the second water tank and then communicated with the water inlet end of the first surface cooler 101, and the water outlet end of the first surface cooler 101 is communicated with the second water tank and then communicated with the water inlet end of the evaporation side of the chiller 3 for providing cold water at temperature T1, so that the cold water at temperature T1 discharged from the evaporation side of the chiller 3 can return after passing through the first surface cooler 101, realizing the circulation of the water flow system of the part of the evaporation side of the chiller 3 for providing cold water at temperature T1 without external additional water supply.

[0078] It should be noted that a second liquid pump is installed on the pipeline between the second water tank and the water inlet end of the first surface cooler 101, so as to be able to provide driving force for the cold water flow inside the first surface cooler 101.

[0079] The water outlet end of the evaporation side of the chiller 3 for supplying chilled water at temperature T2 is connected to the water inlet ends of the second surface cooler 102 and the third surface cooler 105. The water outlet ends of the second surface cooler 102 and the third surface cooler 105 are connected to the water inlet end of the evaporation side of the chiller 3 for supplying chilled water at temperature T2, so that the chilled water at temperature T2 returns to the chiller 3 after passing through the second surface cooler 102 and the third surface cooler 105. Specifically, a third water tank is provided on one side of the chiller 3. The water outlet end of the evaporation side of the chiller 3 for supplying chilled water at temperature T2 is communicated with the third water tank and then with the water inlet ends of the second surface cooler 102 and the third surface cooler 105. And the water outlet ends of the second surface cooler 102 and the third surface cooler 105 are communicated with the third water tank and then with the water inlet end of the evaporation side of the chiller 3 for supplying chilled water at temperature T2, so that the chilled water at temperature T2 discharged from the evaporation side of the chiller 3 can return after passing through the second surface cooler 102 and the third surface cooler 105, realizing the circulation of the water flow system of the part of the evaporation side of the chiller 3 for supplying chilled water at temperature T2 without external additional water supply.

[0080] It should be noted that a third liquid pump and a fourth liquid pump are respectively installed on the pipelines between the third water tank and the water inlet ends of the second surface cooler 102 and the third surface cooler 105, so as to respectively provide driving force for the chilled water flow inside the second surface cooler 102 and the third surface cooler 105.

[0081] In a preferred embodiment, the treatment adsorption air path 1 further includes at least: a primary filter 106, a water baffle 107, and a medium filter 108. Specifically, the primary filter 106 is arranged on the treatment adsorption air path 1 near the treatment air inlet and on the side of the first surface cooler 101 opposite to the second surface cooler 102, so as to filter the dust in the air flow entering the treatment adsorption air path 1 and prevent the dust from blocking the internal first dehumidification rotor 5 and / or the second dehumidification rotor 6. The water baffle 107 is arranged between the second surface cooler 102 and the first dehumidification rotor 5, so as to separate the steam and water of the treatment gas flowing through the first surface cooler 101 and the second surface cooler 102; prevent the regeneration gas from carrying too much moisture into the medium-temperature dehumidification rotor treatment area and reduce the adsorption pressure of the medium-temperature dehumidification rotor. The medium filter 108 is arranged on the treatment adsorption air path 1 on the exhaust side of the second treatment fan 104, so as to filter the treatment gas to be discharged from the treatment air outlet side and improve the cleanliness of the discharged treatment gas.

[0082] Since the amount of hot water at the outlet end of the condensation side of the general chiller 3 is greater than the demand of the heat pump water heater 4, in order to recover the heat of the excess hot water discharged from the condensation side of the chiller 3 and form a circulating water path between the chiller 3 and the heat pump water heater 4, the present application also provides the following solutions: In a preferred embodiment, the medium-temperature rotary dehumidification system further includes at least: a waste heat recovery water path and a third heat exchange component; the waste heat recovery water path has an inlet side and an outlet side.

[0083] Referring to Figure 1 , the inlet side of the waste heat recovery water path is connected to the outlet end of the condensation side of the chiller 3 and the outlet end of the evaporation side of the heat pump water heater 4, and the outlet side of the waste heat recovery water path returns to the inlet end of the condensation side of the chiller 3; at this time, the water source on the inlet side of the waste heat recovery water path is jointly provided by the drainage from the outlet end of the condensation side of the chiller 3 and the outlet end of the evaporation side of the heat pump water heater 4, and the water path circulation is realized by returning through the outlet side of the waste heat recovery water path to the inlet end of the condensation side of the chiller 3.

[0084] Referring to Figure 2 , the inlet side of the waste heat recovery water path is connected to the outlet end of the condensation side of the chiller 3, the outlet side of the waste heat recovery water path returns to the inlet end of the condensation side of the chiller 3, and the outlet end of the evaporation side of the heat pump water heater 4 is connected to the inlet end of the condensation side of the chiller 3; at this time, the water source on the inlet side of the waste heat recovery water path is provided separately by the outlet end of the condensation side of the chiller 3, and the drainage from the outlet side of the waste heat recovery water path and the evaporation side of the heat pump water heater 4 are jointly connected to the inlet end of the condensation side of the chiller 3 to realize the water path circulation.

[0085] It should be noted that in the Figure 1 and Figure 2 solutions, a part of the drainage at the outlet end of the condensation side of the chiller 3 enters the evaporation side of the heat pump water heater 4 to provide low-grade hot water for it, and the remaining part of the drainage enters the waste heat recovery water path for heat recovery for external use.

[0086] The third heat exchange component is arranged on the waste heat recovery water path for recovering the heat of the waste heat recovery water path for external use; wherein, the third heat exchange component includes at least one waste heat exchanger 7. Optionally, the waste heat exchanger 7 can be selected as the equipment of the same model as the first hot water exchanger 201 and the second hot water exchanger 202. Specifically, in Figure 1 , the hot water on the inlet side of the waste heat exchanger 7 is a mixture of the 45°C - 50°C hot water discharged from the condensation side of the chiller 3 and the water discharged from the evaporation side of the heat pump water heater 4. The heat energy after heat exchange can be used externally to further improve the energy efficiency utilization rate. The drained water after heat exchange by the waste heat exchanger 7 re-enters the evaporation side of the chiller 3 to realize the water path circulation; in Figure 2Among them, the hot water on the water inlet side of the waste heat heat exchanger 7 is the hot water at 45°C to 50°C discharged from the condensation side of the chiller 3. The heat energy after heat exchange can be used externally. Subsequently, the drained water after heat exchange by the waste heat heat exchanger 7 and the drained water on the evaporation side of the heat pump water heater 4 flow back to the condensation side of the chiller 3 together to realize the water circuit circulation.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Without departing from the principles and spirit of the present invention, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A medium temperature rotary dehumidification system, characterized in that: include: A processing adsorption air path (1), wherein the gas to be processed flows in the processing adsorption air path (1) in a direction from a processing air inlet side to a processing air outlet side; A regeneration desorption air passage (2), wherein the regeneration gas flows in the regeneration desorption air passage (2) in a direction from a regeneration air inlet side to a regeneration air outlet side; At least one medium-temperature dehumidification wheel, the medium-temperature dehumidification wheel having a treatment zone and a regeneration zone, the treatment adsorption air path (1) passing through the treatment zone of the medium-temperature dehumidification wheel, used for dehumidifying and adsorbing the gas to be treated, and the regeneration desorption air path (2) passing through the regeneration zone of the medium-temperature dehumidification wheel, used for desorption in the regeneration zone; A first heat exchange component, the first heat exchange component is arranged on the air inlet side of the processing adsorption air path (1) and is used to cool the gas to be processed; A water chiller (3), the water chiller (3) having an evaporation side and a condensation side, the evaporation side of the water chiller (3) being connected to the first heat exchange component and used to supply cold water to the first heat exchange component; a second heat exchange component, the second heat exchange component being arranged at the air inlet side of the regeneration and desorption air path (2) and being used for heating the regeneration gas; A heat pump water heater (4), the heat pump water heater (4) having an evaporation side and a condensation side, the condensation side of the heat pump water heater (4) being connected to a second heat exchange component and used for supplying hot water to the second heat exchange component; The condensing side of the water chiller (3) is connected to the evaporating side of the heat pump water heater (4) and provides low-grade hot water thereto.

2. The medium temperature rotary dehumidification system according to claim 1, characterized in that: The medium-temperature dehumidification wheel comprises at least a first dehumidification wheel (5) and a second dehumidification wheel (6) along the flow direction of the gas to be treated, so as to dehumidify the gas to be treated, and the regeneration temperature of the first dehumidification wheel (5) and the second dehumidification wheel (6) is 70-90°C.

3. The medium temperature rotary dehumidification system according to claim 2, characterized in that: The first heat exchange component comprises a first surface cooler (101) and a second surface cooler (102); The water chiller (3) is used to provide cold water with a temperature of T1 and cold water with a temperature of T2 to the first surface cooler (101) and the second surface cooler (102), respectively, where T1>T2; The first surface cooler (101) and the second surface cooler (102) are sequentially arranged on the air inlet side of the medium-temperature dehumidification wheel treatment area along the flow direction of the gas to be treated, and are used to perform primary cooling and dehumidification and secondary cooling and dehumidification on the airflow on the air inlet side of the medium-temperature dehumidification wheel treatment area, respectively.

4. The medium temperature rotary dehumidification system according to claim 2, characterized in that: The second heat exchange component comprises a first hot water heat exchanger (201) and a second hot water heat exchanger (202); The first hot water heat exchanger (201) is arranged along the regeneration gas flow direction at the air inlet side of the regeneration zone of the second dehumidification wheel (6), and is used to heat the regeneration gas on the air inlet side of the regeneration zone of the second dehumidification wheel (6); the second hot water heat exchanger (202) is arranged along the regeneration gas flow direction between the air outlet side of the regeneration zone of the first dehumidification wheel (5) and the air inlet side of the regeneration zone of the second dehumidification wheel (6), and is used to heat the regeneration gas on the air inlet side of the regeneration zone of the first dehumidification wheel (5); and / or, The water outlet end of the condensing side of the heat pump water heater (4) is respectively connected to the water inlet ends of the first hot water heat exchanger (201) and the second hot water heat exchanger (202), and the water inlet end of the condensing side of the heat pump water heater (4) is respectively connected to the water outlet ends of the first hot water heat exchanger (201) and the second hot water heat exchanger (202), so that the hot water discharged from the water outlet end of the condensing side of the heat pump water heater (4) passes through the first hot water heat exchanger (201) and the second hot water heat exchanger (202) and then flows back to the heat pump water heater (4).

5. The medium temperature rotary dehumidification system according to claim 2, characterized in that: A first airflow driving component is provided in the processing adsorption air path (1) for causing air to flow from the processing air inlet side along the processing adsorption air path (1) to the processing air outlet side; and / or, The first airflow driving component comprises at least a first processing fan (103) and a second processing fan (104); The first processing fan (103) is arranged on the processing adsorption air path (1) between the air outlet side of the processing area of ​​the first dehumidification wheel (5) and the air inlet side of the processing area of ​​the second dehumidification wheel (6); The second processing fan (104) is arranged on the processing adsorption air path (1) on the air outlet side of the processing area of ​​the second dehumidification wheel (6).

6. The medium temperature rotary dehumidification system according to claim 2, characterized in that: A second airflow driving component is provided in the regeneration desorption air path (2) for causing air to flow from the regeneration air inlet side along the regeneration desorption air path (2) to the regeneration air outlet side; and / or, The second airflow driving component comprises at least a first regeneration fan (203) and a second regeneration fan (204); The first regeneration fan (203) is arranged on the regeneration desorption air path (2) between the air inlet side of the regeneration zone of the first dehumidification rotor (5) and the air outlet side of the regeneration zone of the second dehumidification rotor (6); The second regeneration fan (204) is arranged on the regeneration desorption air path (2) on the air outlet side of the regeneration zone of the first dehumidification wheel (5).

7. The medium temperature rotary dehumidification system according to claim 3, characterized in that: The first heat exchange component further comprises a third surface cooler (105); the third surface cooler (105) is arranged on the processing adsorption air path (1) between the first dehumidification wheel (5) and the second dehumidification wheel (6), and is used to cool and dehumidify the airflow on the air inlet side of the processing area of ​​the second dehumidification wheel (6); and / or, The water outlet end of the evaporation side of the chiller (3) for providing cold water at a temperature of T1 is connected to the water inlet end of the first surface cooler (101), and the water outlet end of the first surface cooler (101) is connected to the water inlet end of the evaporation side of the chiller (3) for providing cold water at a temperature of T1, so that the cold water at a temperature of T1 flows back into the chiller (3) after passing through the first surface cooler (101); The water outlet end of the evaporation side of the chiller (3) for providing cold water at a temperature of T2 is connected to the water inlet ends of the second cooler (102) and the third cooler (105); the water outlet ends of the second cooler (102) and the third cooler (105) are connected to the water inlet end of the evaporation side of the chiller (3) for providing cold water at a temperature of T2, so that the cold water at a temperature of T2 flows back into the chiller (3) after passing through the second cooler (102) and the third cooler (105).

8. The medium temperature rotary dehumidification system according to claim 3 or 5, characterized in that: The first heat exchange component comprises a first surface cooler (101) and a second surface cooler (102); the processing adsorption air path (1) further comprises at least: a primary filter (106), the primary filter (106) being arranged on the process adsorption air path (1) close to the process air inlet and located on the side of the first surface cooler (101) opposite to the second surface cooler (102), for filtering dust in the airflow entering the process adsorption air path (1); and / or, a water baffle (107), the water baffle (107) being arranged between the second surface cooler (102) and the first dehumidification wheel (5) to separate steam and water from the airflow after passing through the first surface cooler (101) and the second surface cooler (102); and / or A medium efficiency filter (108) and a second processing fan (104), wherein the medium efficiency filter (108) is arranged on a processing adsorption air path (1) located on the exhaust side of the second processing fan (104) to filter the processing gas to be discharged from the processing outlet side.

9. The medium temperature rotary dehumidification system according to claim 1, characterized in that: The treatment air inlet side of the treatment adsorption air passage (1) and the regeneration air exhaust side of the regeneration desorption air passage (2) are located on the same side, and the treatment air outlet side of the treatment adsorption air passage (1) and the regeneration air inlet side of the regeneration desorption air passage (2) are located on the same side; the low-grade hot water is hot water at 40°C to 50°C.

10. The medium temperature rotary dehumidification system according to claim 1, characterized in that: The medium temperature rotary dehumidification system also includes at least: A waste heat recovery water circuit, the waste heat recovery water circuit having a water inlet side and a water outlet side; The water inlet side of the waste heat recovery water circuit is connected to the water outlet end of the condensing side of the chiller (3) and the water outlet end of the evaporating side of the heat pump hot water unit (4), and the water outlet side of the waste heat recovery water circuit flows back to the water inlet end of the condensing side of the chiller (3); or, the water inlet side of the waste heat recovery water circuit is connected to the water outlet end of the condensing side of the chiller (3), and the water outlet side of the waste heat recovery water circuit flows back to the water inlet end of the condensing side of the chiller (3), and the water outlet end of the evaporating side of the heat pump hot water unit (4) is connected to the water inlet end of the condensing side of the chiller (3); A third heat exchange component, the third heat exchange component is arranged on the waste heat recovery water path, and is used to recover the heat of the waste heat recovery water path for external use; and / or, The third heat exchange component comprises at least one waste heat exchanger (7).

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