CN111189130A - Solution regenerating unit and have its air dehydrating unit - Google Patents

Solution regenerating unit and have its air dehydrating unit Download PDF

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Publication number
CN111189130A
CN111189130A CN202010082764.5A CN202010082764A CN111189130A CN 111189130 A CN111189130 A CN 111189130A CN 202010082764 A CN202010082764 A CN 202010082764A CN 111189130 A CN111189130 A CN 111189130A
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CN
China
Prior art keywords
solution
air
outlet
liquid
inlet
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Pending
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CN202010082764.5A
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Chinese (zh)
Inventor
陈亮亮
刘亭亭
李奇
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Tianjin Sinorefine Air Conditioning Equipment Co ltd
Beijing Sinorefine Air Conditioning Technology Co ltd
Original Assignee
Tianjin Sinorefine Air Conditioning Equipment Co ltd
Beijing Sinorefine Air Conditioning Technology Co ltd
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Application filed by Tianjin Sinorefine Air Conditioning Equipment Co ltd, Beijing Sinorefine Air Conditioning Technology Co ltd filed Critical Tianjin Sinorefine Air Conditioning Equipment Co ltd
Priority to CN202010082764.5A priority Critical patent/CN111189130A/en
Publication of CN111189130A publication Critical patent/CN111189130A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1417—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with liquid hygroscopic desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1429—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Abstract

The invention provides a solution regeneration device and an air dehumidification device with the same, wherein the solution regeneration device comprises: the regeneration tower comprises a shell, a spray pipe, a first liquid inlet, a first liquid outlet, a first air inlet and a first air outlet, wherein the first liquid inlet, the first liquid outlet, the first air inlet and the first air outlet are formed in the shell; the first pipeline is connected between the first air inlet and the first air outlet; the first surface cooler, the first fan and the second surface cooler are sequentially connected to the first pipeline from the first air outlet to the first air inlet, and the first surface cooler is provided with a second liquid inlet and a second liquid outlet; the second liquid inlet is communicated with the first liquid outlet through a second pipeline; the heat pump is provided with a third liquid inlet and a third liquid outlet, the third liquid inlet is communicated with the second liquid outlet, and the third liquid outlet is communicated with the spray pipe. The technical scheme of the application effectively solves the problems that the regeneration power consumption is high and high-concentration regeneration cannot be realized because the heat generated by solution regeneration in the related technology is completely generated by a heat pump.

Description

Solution regenerating unit and have its air dehydrating unit
Technical Field
The invention relates to the technical field of air conditioners, in particular to a solution regeneration device and an air dehumidification device with the same.
Background
The solution dehumidification technology is a common air humidity processing mode, and realizes moisture transfer by utilizing the water vapor partial pressure difference between humid air and a moisture absorption solution so as to achieve the purpose of reducing the air humidity, wherein the higher the solution concentration is, the lower the relative humidity of the dehumidified air is. The complete solution dehumidifying process usually includes a dehumidifying device and a regenerating device, in the dehumidifying device, the solution is contacted with humid air, the partial pressure of water vapor in the air is greater than the vapor pressure of the solution surface, the solution absorbs the moisture in the air, and the solution concentration is reduced. In the regeneration device, the dilute solution is heated, the partial pressure of water vapor on the surface rises and is higher than the partial pressure of water vapor in the air, moisture is transferred from the solution to the air, and the solution is concentrated and regenerated.
The solution regeneration method generally utilizes a heat source such as heat pump exhaust heat or steam hot water to heat the solution, then sprays the solution in the air to perform heat-mass exchange with the air, and transfers moisture in the solution to the air to realize concentration of the solution. The temperature required for regeneration is generally related to the solution concentration, with higher solution concentrations requiring higher regeneration temperatures. In the deep dehumidification field with the moisture content lower than 7g/kg, because the concentration required by the solution is higher and the regeneration temperature is higher, the solution is generally heated by steam or high-temperature hot water for regeneration.
The solution regenerator based on the heat pump latent heat recovery is provided in the related art, the solution is heated by utilizing the heat extraction of a condenser, and the air is cooled by utilizing the cold energy of an evaporator, so that the closed circulation solution regenerator is realized, and the solution can be concentrated.
However, in the deep dehumidification situation, the temperature required for regeneration exceeds the maximum condensation temperature of the heat pump condenser, so that the condensation exhaust heat of the heat pump system cannot be utilized, only steam or high-temperature hot water can be selected, and the regeneration cost is high. Meanwhile, in a solution regeneration mode in the related technology, the regeneration heat is completely generated by a heat pump, the power consumption of a condenser is high, and the economic advantage is not obvious compared with the steam regeneration. Meanwhile, the condensation temperature has an upper limit, the regeneration temperature is limited, the regeneration of high-concentration solution cannot be realized, and the method cannot be used in the field of deep dehumidification.
Disclosure of Invention
The invention mainly aims to provide a solution regeneration device and an air dehumidification device with the same, and aims to solve the problems that in the related art, the regeneration power consumption is high and high-concentration regeneration cannot be realized because all heat generated by solution regeneration comes from heat of a heat pump.
In order to achieve the above object, according to one aspect of the present invention, there is provided a solution regeneration apparatus including: the regeneration tower comprises a shell, a spray pipe, a first liquid inlet, a first liquid outlet, a first air inlet and a first air outlet, wherein the first liquid inlet, the first liquid outlet, the first air inlet and the first air outlet are formed in the shell; the first pipeline is connected between the first air inlet and the first air outlet; the first surface cooler, the first fan and the second surface cooler are sequentially connected to the first pipeline from the first air outlet to the first air inlet, and the first surface cooler is provided with a second liquid inlet and a second liquid outlet; the second liquid inlet is communicated with the first liquid outlet through a second pipeline; the heat pump is provided with a third liquid inlet and a third liquid outlet, the third liquid inlet is communicated with the second liquid outlet, and the third liquid outlet is communicated with the spray pipe.
Further, the solution regeneration device also comprises a heat exchanger, the heat exchanger is provided with a fourth liquid inlet and a fourth liquid outlet, the fourth liquid inlet is communicated with the third liquid outlet, and the fourth liquid outlet is communicated with the spray pipe.
Furthermore, a first temperature sensor is arranged at the third liquid outlet, a second temperature sensor is arranged at the fourth liquid outlet, and the solution regeneration device further comprises a controller which is electrically connected with the first temperature sensor and the second temperature sensor.
Furthermore, the first pipeline is provided with an air outlet and an air inlet, the solution regeneration device further comprises a second fan arranged at the air outlet, the first surface cooler is further provided with a second air outlet, and the air outlet is located between the second air outlet and the air inlet.
Furthermore, the regeneration tower also comprises a third pipeline connected with the first liquid outlet, a pump body is arranged on the third pipeline, and the second pipeline is communicated with the third pipeline.
Further, the solution regeneration device also comprises a valve body arranged on the third pipeline, and the valve body is positioned between the junction formed by the second pipeline and the third pipeline and the outlet of the third pipeline.
Furthermore, the solution regeneration device also comprises a controller and a concentration detection element arranged in the shell, and the concentration detection element and the valve body are electrically connected with the controller.
The heat pump comprises a condenser, a compressor and an expansion valve, the condenser is provided with a third liquid inlet and a third liquid outlet, the second surface air cooler is provided with a second air inlet and a third air outlet, the second air inlet is communicated with the third air outlet through a fourth pipeline, and the compressor, the condenser and the expansion valve are sequentially connected to the fourth pipeline; the regeneration tower also comprises a liquid storage area, a reaction area and a spraying area which are arranged in the shell, and the spraying pipe is positioned in the spraying area.
Further, still be provided with the third surface cooler on the first pipeline, the third surface cooler is located between first surface cooler and the first fan, and the third surface cooler has third air inlet and fourth gas outlet, and third air inlet and fourth gas outlet all are linked together with first pipeline.
According to another aspect of the present invention, there is provided an air dehumidifying device comprising a solution dehumidifying device and a solution regenerating device communicated with the solution dehumidifying device, wherein the solution regenerating device is the above solution regenerating device.
By applying the technical scheme of the invention, the solution regeneration device comprises: the system comprises a regeneration tower, a first pipeline, a first surface cooler, a first fan, a second surface cooler, a second pipeline and a heat pump. The regeneration tower comprises a shell, a spray pipe, a first liquid inlet, a first liquid outlet, a first air inlet and a first air outlet, wherein the first liquid inlet, the first liquid outlet, the first air inlet and the first air outlet are formed in the shell. The first pipeline is connected between the first air inlet and the first air outlet. First surface cooler, first fan and second surface cooler connect gradually on the first pipeline by first gas outlet to the direction of first air inlet. The first surface cooler is provided with a second liquid inlet and a second liquid outlet. The second liquid inlet is communicated with the first liquid outlet through a second pipeline. The heat pump has a third inlet and a third outlet. The third liquid inlet is communicated with the second liquid outlet, and the third liquid outlet is communicated with the spray pipe. In the application, after entering the regeneration tower from the first air inlet, the mixed air firstly transfers heat and mass with the solution in the shell, and after being changed into high-temperature and high-humidity air, the mixed air is discharged out of the regeneration tower from the first air outlet. After the high-temperature and high-humidity air comes out of the first air outlet, the air exchanges heat with the first surface cooler, the heat in the air is recovered, and the air is stored in the first surface cooler. After the air is cooled, the air enters a second surface air cooler through a first fan, mixed air is obtained through further cooling and dehumidification, and the air enters the regeneration tower again through a first air inlet. Dilute solution enters into to the casing through first inlet, produces concentrated solution behind the regenerator column, and concentrated solution becomes low temperature solution after the first liquid outlet backward flow of regenerator column, gets into first surface cooler through the second pipeline earlier, and low temperature solution carries out the heat transfer with the heat of preserving in first surface cooler to the heat in the high temperature and high humidity's the air of recovery realizes low temperature solution's first intensification. The low-temperature solution after being heated for the first time enters the heat pump from the second liquid outlet, and the heat pump heats the low-temperature solution again to obtain the required regeneration temperature. In the process, the low-temperature solution after being heated for the first time can reduce the heating capacity of the heat pump, so that the situation that all the heat generated by the regeneration of the low-temperature solution comes from the heating of the heat pump is avoided, and the power consumption of the heat pump is reduced. And after the temperature is raised again, the solution enters the spray pipe and then is sprayed and regenerated in the regeneration tower, the regenerated solution flows back to the regeneration tower to be stored so as to obtain a concentrated solution, and the concentrated solution is discharged from the first liquid outlet and enters the next circulation. Therefore, the technical scheme of the application effectively solves the problems that the regeneration power consumption is high and high-concentration regeneration cannot be realized because the heat generated by solution regeneration in the related technology is all generated by a heat pump.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural diagram of a first embodiment of a solution regeneration device according to the present invention; and
fig. 2 shows a schematic configuration of a second embodiment of the solution regeneration device according to the invention.
Wherein the figures include the following reference numerals:
10. a regeneration tower; 11. a housing; 12. a first liquid inlet; 13. a first liquid outlet; 14. a first air inlet; 15. a first air outlet; 16. a shower pipe; 17. a liquid storage area; 18. a reaction zone; 19. a spraying area; 20. a first pipeline; 21. an air outlet; 22. an air inlet; 30. a first surface air cooler; 31. a second liquid inlet; 32. a second liquid outlet; 33. a second air outlet; 41. a first fan; 42. a second fan; 50. a second surface air cooler; 51. a third air outlet; 52. a second air inlet; 61. a second pipeline; 62. a third pipeline; 63. a pump body; 64. a valve body; 65. a fourth pipeline; 70. a heat pump; 71. a third liquid inlet; 72. a third liquid outlet; 73. a condenser; 74. a compressor; 75. an expansion valve; 80. a heat exchanger; 81. a fourth liquid inlet; 82. a fourth liquid outlet; 90. a third surface cooler; 91. a third air inlet; 92. and a fourth air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, the solution regenerating apparatus according to the first embodiment includes: the system comprises a regeneration tower 10, a first pipeline 20, a first surface cooler 30, a first fan 41, a second surface cooler 50, a second pipeline 61 and a heat pump 70. The regeneration tower 10 comprises a shell 11, a spray pipe 16, and a first liquid inlet 12, a first liquid outlet 13, a first gas inlet 14 and a first gas outlet 15 which are arranged on the shell 11. A first conduit 20 is connected between said first air inlet 14 and said first air outlet 15. The first surface air cooler 30, the first fan 41 and the second surface air cooler 50 are sequentially connected to the first pipeline 20 from the first air outlet 15 to the first air inlet 14. The first surface cooler 30 has a second inlet port 31 and a second outlet port 32. The second liquid inlet 31 is communicated with the first liquid outlet 13 through the second pipeline 61. The heat pump 70 has a third inlet port 71 and a third outlet port 72. The third liquid inlet 71 is communicated with the second liquid outlet 32, and the third liquid outlet 72 is communicated with the spray pipe 16.
According to the technical scheme of the first application embodiment, the solution regeneration device comprises: the first surface cooler 30 has a second inlet port 31 and a second outlet port 32. The second inlet port 31 communicates with the first outlet port 13 through a second conduit 61. The heat pump 70 has a third inlet port 71 and a third outlet port 72. The third liquid inlet 71 is communicated with the second liquid outlet 32, and the third liquid outlet 72 is communicated with the spray pipe 16. In the present application, after entering the regeneration tower 10 through the first air inlet 14, the mixed air first performs heat and mass transfer with the solution in the shell 11, and becomes air with high temperature and high humidity, and then is discharged from the regeneration tower through the first air outlet 15. After the high-temperature and high-humidity air comes out of the first air outlet 15, the air exchanges heat with the first surface cooler 30, recovers heat from the air, and is stored in the first surface cooler 30. After being cooled, the air enters the second surface air cooler 50 through the first fan 41, is further cooled and dehumidified to obtain mixed air, and the air enters the regeneration tower 10 again through the first air inlet 14. Dilute solution enters the shell 11 through the first liquid inlet 12, concentrated solution is generated after the dilute solution passes through the regeneration tower 10, the concentrated solution is changed into low-temperature solution after flowing back from the first liquid outlet 13 of the regeneration tower 10, the low-temperature solution enters the first surface cooler 30 through the second pipeline 61, the low-temperature solution exchanges heat with heat stored in the first surface cooler 30, heat in high-temperature and high-humidity air is recovered, and the first temperature rise of the low-temperature solution is realized. The low-temperature solution after the first temperature rise enters the heat pump 70 from the second liquid outlet 32, and the heat pump 70 raises the temperature of the low-temperature solution again to obtain the required regeneration temperature. In the process, the low-temperature solution after being heated for the first time can reduce the heating capacity of the heat pump, so that the situation that all the heat generated by the regeneration of the low-temperature solution comes from the heating of the heat pump is avoided, and the power consumption of the heat pump is reduced. And after the solution after being heated again enters the spraying pipe 16, spraying and regenerating in the regeneration tower 10, refluxing the regenerated solution to the regeneration tower 10 for storage to obtain a concentrated solution, and discharging the concentrated solution from the first liquid outlet 13 to enter the next circulation. Therefore, the technical solution of the first embodiment effectively solves the problems that the heat generated by solution regeneration in the related art is all generated by a heat pump, so that the regeneration power consumption is high, and high-concentration regeneration cannot be realized.
The solution in the first embodiment may be a lithium chloride solution, a lithium bromide solution, a calcium chloride solution, or a mixed solution of the three solutions. The first surface cooler 30 is preferably a titanium finned tube heat exchanger and the second surface cooler 50 is preferably a copper tube aluminum finned surface cooler.
As shown in fig. 1, in the first embodiment, the solution regeneration device further includes a heat exchanger 80. The heat exchanger 80 has a fourth inlet port 81 and a fourth outlet port 82. The fourth inlet 81 communicates with the third outlet 72, and the fourth outlet 82 communicates with the shower 16. The heat exchanger 80 can finally heat the low-temperature solution which is heated again, the low-temperature solution is heated by the heat exchanger 80 to the required regeneration temperature, and then the low-temperature solution enters the spray pipe 16 and is sprayed and regenerated in the regeneration tower 10. The heat exchanger 80 heats again on the basis of the heat pump 70, and the heating cost of the solution can be reduced. In this way, in order to increase the temperature of the solution to increase the regeneration concentration of the solution, the solution is finally further heated by the high temperature heat source of the heat exchanger 80. Through the purpose of reheating by the heat exchanger 80, on one hand, the condensation temperature of the heat pump 70 is prevented from being too high, the heating energy efficiency ratio COP is reduced, and the power consumption is greatly increased, and on the other hand, the problems that the heat pump 70 is operated under extreme working conditions, high-pressure protection, exhaust temperature protection and the like are easy to occur are avoided. In addition, through first surface cooler 30 heating for the first time, through heat pump 70 reheating, this kind of the mode of heating step by step of last heating through heat exchanger 80, each grade all adopts the optimal heating methods, makes the regeneration cost of the concentration of solution reduce to minimumly, satisfies the high concentration regeneration demand simultaneously, and then has satisfied the degree of depth dehumidification demand. The high-temperature heat source can be steam or hot water. The heat exchanger 80 of the first embodiment is preferably a steam plate heat exchanger.
As shown in fig. 1, in the first embodiment, a first temperature sensor is disposed at the third liquid outlet 72, a second temperature sensor is disposed at the fourth liquid outlet 82, and the solution regeneration apparatus further includes a controller, and the controller is electrically connected to the first temperature sensor and the second temperature sensor. The first temperature sensor can detect the temperature of the solution at the third liquid outlet 72 and upload the temperature to the controller, and thus the operating state of the heat exchanger 80 can be controlled according to the controller, and the second temperature sensor can detect the temperature of the solution at the fourth liquid outlet 82 and upload the temperature to the controller, so the operating state of the heat exchanger 80 can be controlled according to the controller.
As shown in fig. 1, in the first embodiment, the first pipeline 20 is provided with an air outlet 21 and an air inlet 22. In order to maintain the heat balance of the solution regeneration device, the solution regeneration device further comprises a second fan 42 disposed at the air outlet 21, the first surface cooler 30 further has a second air outlet 33, and the air outlet 21 is located between the second air outlet 33 and the air inlet 22. The second air outlet 33 is communicated with the air outlet 21. Thus, the high-temperature and high-humidity air heat-recovered by the first surface cooler 30 is partially discharged from the discharge outlet 21 by the second fan 42. After the second fan 42 exhausts air, a negative pressure is formed inside the first pipeline 20, fresh air with a low external enthalpy value of the solution regeneration device can be sucked from the air inlet 22, the balance of the air circulation amount in the solution regeneration device is maintained, meanwhile, redundant heat generated by the solution regeneration device is exhausted out of the solution regeneration device, and the heat balance is maintained. In addition, the fresh air sucked from the air inlet 22 is mixed with the rest regeneration air in the first pipeline 20, enters the second surface air cooler 50, is cooled and dehumidified, and then returns to the first air inlet 14 of the regeneration tower 10 to perform a new regeneration cycle.
It should be noted that the exhaust air volume of the second fan 42 can be determined by the air parameter at the first air inlet 14, if the air temperature at the first air inlet 14 increases, the exhaust air volume of the second fan 42 is increased, and the exhaust heat of the solution regeneration device is increased, and if the air temperature at the first air inlet 14 decreases, the exhaust air volume of the second fan 42 is decreased, and the exhaust heat of the solution regeneration device is decreased.
As shown in fig. 1, in the first embodiment, the regeneration tower 10 further includes a third pipeline 62 connected to the first liquid outlet 13. A pump body 63 is provided on the third pipeline 62. The second line 61 communicates with the third line 62. The pump 63 is configured to provide kinetic energy to the solution in the regeneration tower 10 to facilitate the solution to be discharged from the first liquid outlet 13.
As shown in fig. 1, in the first embodiment, the solution regenerating device further includes a valve body 64 disposed on the third pipeline 62, and the valve body 64 is located between the junction point formed by the second pipeline 61 and the third pipeline 62 and the outlet of the third pipeline 62. The valve body 64 is arranged to open and close the third pipeline 62, and after the concentration of the solution reaches the high-concentration solution required by deep dehumidification, the valve body 64 is opened to discharge the concentrated solution. When the concentration of the solution does not reach the high-concentration solution required for deep dehumidification, the solution enters the second pipeline 61 from the third pipeline 62 to continue circulation.
As shown in fig. 1, in the first embodiment, the solution regenerating device further includes a controller and a concentration detecting element disposed in the housing 11, and both the concentration detecting element and the valve body 64 are electrically connected to the controller. The valve body 64 is preferably a solenoid valve. When the concentration of the detection solution of the concentration detection element meets the regeneration requirement of the high-concentration solution, the controller controls the valve body 64 to be opened, the high-concentration solution is discharged from the outlet of the third pipeline 62, when the concentration of the detection solution of the concentration detection element does not meet the regeneration requirement of the high-concentration solution, the controller controls the valve body 64 to be closed, and the solution which does not meet the regeneration requirement of the high-concentration solution enters the second pipeline 61 to be recycled.
The regeneration concentration of the solution can be adjusted by the steam flow of the heat exchanger 80 or the capacity of the heat pump 70 according to the concentration detection element, and if the concentration detection element detects that the concentration of the solution in the housing 11 is low, the steam flow of the heat exchanger 80 or the heating capacity of the heat pump 70 is increased, the temperature of the regeneration solution in the housing 11 is increased, the regeneration amount is increased, and the solution concentration is increased. If the solution concentration in the casing 11 is relatively high, the steam flow of the heat exchanger 80 or the heating capacity of the heat pump 70 is reduced, the temperature of the regeneration solution in the casing 11 is reduced, the regeneration capacity is reduced, and the solution concentration is reduced.
As shown in fig. 1, in the first embodiment, the heat pump 70 includes a condenser 73, a compressor 74 and an expansion valve 75, the condenser 73 has a third liquid inlet 71 and a third liquid outlet 72, the second surface air cooler 50 has a second air inlet 52 and a third air outlet 51, the second air inlet 52 is communicated with the third air outlet 51 through a fourth pipeline 65, and the compressor 74, the condenser 73 and the expansion valve 75 are sequentially connected to the fourth pipeline 65. The refrigerating capacity of the condenser 73 is used for cooling the regenerated air in the first pipeline 20, so that the regenerated air has regeneration capacity again, meanwhile, the low-temperature air can reduce the solution backflow temperature, the heat recovery effect of the solution on the air is improved, the heating capacity of the steam of the heat pump 70 and the heat exchanger 80 is reduced, and the energy consumption is reduced.
As shown in fig. 1, in the first embodiment, the regeneration tower 10 further includes a liquid storage region 17, a reaction region 18 and a spraying region 19 disposed in the housing 11, and the spraying pipe 16 is located in the spraying region 19. Reaction zone 18 includes a plurality of packing materials. The liquid storage region 17 is capable of storing a solution.
In the first embodiment, the solution regenerating device adopts the principle that the low-temperature air and the high-temperature solution transfer heat and mass to absorb the moisture in the solution, so as to realize the concentration of the solution. Specifically, realize heat recovery through first surface cooler 30, heat pump 70 heats, and the mode that the high temperature heat source in the heat exchanger 80 carried out the concurrent heating realizes the regeneration solution gradient in the casing 11 and heaies up, and each grade all adopts the optimal heating methods, reduces regeneration energy consumption by a wide margin, has reduced regeneration cost, can realize the regeneration of solution high concentration simultaneously, satisfies the degree of depth dehumidification demand. Compared with the heat pump heating method in which all heat comes from the heat pump, the heat recovery of air is increased, the heating capacity of the heat pump is reduced, and the regeneration cost is greatly reduced. Meanwhile, the regeneration temperature is increased by the steam heating of the heat exchanger 80, the regeneration requirement of the high-concentration solution can be met, the regeneration cost is reduced, and the advantages are obvious.
As shown in fig. 2, in the second embodiment of the solution regeneration apparatus provided in the present application, the difference from the first embodiment is that a third surface cooler 90 is further disposed on the first pipeline 20. In the second embodiment, a third surface cooler 90 is located between the first surface cooler 30 and the first fan 41, the third surface cooler 90 has a third air inlet 91 and a fourth air outlet 92, and the third air inlet 91 and the fourth air outlet 92 are both communicated with the first pipeline 20. So that the second outlet port 33 communicates with the third inlet port 91. The third surface cooler 90 is externally connected with cold water. Thus, the high-temperature and high-humidity air heat-recovered by the first surface cooler 30 enters the third surface cooler 90 through the third air inlet 91, and the third surface cooler 90 can absorb heat of the high-temperature and high-humidity air. The excessive heat generated by the solution regeneration device can be dissipated to the outside of the solution regeneration device through the third surface cooler 90, so that the balance of the air circulation amount in the solution regeneration device is maintained. In the second embodiment, the air outlet 21, the air inlet 22 and the second fan 42 in the first embodiment are eliminated, and the extra heat generated by the solution regenerating device can be taken away only by using the externally connected high-temperature cold water of the third surface cooler 90. The third surface cooler 90 of the second embodiment is preferably a copper tube aluminum fin surface cooler.
In an embodiment of the air dehumidifying apparatus, the air dehumidifying apparatus includes a solution dehumidifying apparatus and a solution regenerating apparatus communicated with the solution dehumidifying apparatus, and the solution regenerating apparatus is the above solution regenerating apparatus. The air dehumidifying device of the embodiment can solve the problems that the heat generated by solution regeneration in the related art is completely generated by a heat pump, so that the regeneration power consumption is high, and high-concentration regeneration cannot be realized.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A solution regeneration device, comprising:
the regeneration tower (10) comprises a shell (11), a spray pipe (16), and a first liquid inlet (12), a first liquid outlet (13), a first gas inlet (14) and a first gas outlet (15) which are arranged on the shell (11);
-a first duct (20) connected between said first air inlet (14) and said first air outlet (15);
the first surface cooler (30), the first fan (41) and the second surface cooler (50) are sequentially connected to the first pipeline (20) from the first air outlet (15) to the first air inlet (14), and the first surface cooler (30) is provided with a second liquid inlet (31) and a second liquid outlet (32);
a second pipeline (61), wherein the second liquid inlet (31) is communicated with the first liquid outlet (13) through the second pipeline (61);
a heat pump (70) having a third liquid inlet (71) and a third liquid outlet (72), the third liquid inlet (71) being in communication with the second liquid outlet (32), the third liquid outlet (72) being in communication with the shower (16).
2. The solution regeneration device according to claim 1, further comprising a heat exchanger (80), wherein the heat exchanger (80) has a fourth liquid inlet (81) and a fourth liquid outlet (82), the fourth liquid inlet (81) is communicated with the third liquid outlet (72), and the fourth liquid outlet (82) is communicated with the shower pipe (16).
3. The solution regeneration device according to claim 2, wherein a first temperature sensor is disposed at the third liquid outlet (72), a second temperature sensor is disposed at the fourth liquid outlet (82), and the solution regeneration device further comprises a controller, wherein the controller is electrically connected to the first temperature sensor and the second temperature sensor.
4. The solution regeneration device according to claim 1, wherein the first pipeline (20) is provided with an air outlet (21) and an air inlet (22), the solution regeneration device further comprises a second fan (42) arranged at the air outlet (21), the first surface air cooler (30) further has a second air outlet (33), and the air outlet (21) is located between the second air outlet (33) and the air inlet (22).
5. The solution regeneration device according to claim 1, wherein the regeneration tower (10) further comprises a third pipeline (62) connected to the first liquid outlet (13), a pump body (63) is disposed on the third pipeline (62), and the second pipeline (61) is communicated with the third pipeline (62).
6. Solution regeneration device according to claim 5, characterized in that it further comprises a valve body (64) arranged on the third line (62), said valve body (64) being located between the junction formed by the second line (61) and the third line (62) and the outlet of the third line (62).
7. The solution regeneration device according to claim 6, further comprising a controller and a concentration detection element disposed within the housing (11), wherein the concentration detection element and the valve body (64) are electrically connected to the controller.
8. The solution regeneration device of claim 1,
the heat pump (70) comprises a condenser (73), a compressor (74) and an expansion valve (75), the condenser (73) is provided with a third liquid inlet (71) and a third liquid outlet (72), the second surface cooler (50) is provided with a second air inlet (52) and a third air outlet (51), the second air inlet (52) is communicated with the third air outlet (51) through a fourth pipeline (65), and the compressor (74), the condenser (73) and the expansion valve (75) are sequentially connected to the fourth pipeline (65);
the regeneration tower (10) further comprises a liquid storage area (17), a reaction area (18) and a spraying area (19) which are arranged in the shell (11), and the spraying pipe (16) is located in the spraying area (19).
9. The solution regenerating arrangement according to claim 1, characterized in that a third surface cooler (90) is further arranged on the first pipe (20), the third surface cooler (90) is located between the first surface cooler (30) and the first fan (41), the third surface cooler (90) has a third air inlet (91) and a fourth air outlet (92), and the third air inlet (91) and the fourth air outlet (92) are both communicated with the first pipe (20).
10. An air dehumidifying device comprising a solution dehumidifying device and a solution regenerating device communicating with the solution dehumidifying device, wherein the solution regenerating device is the solution regenerating device of any one of claims 1 to 9.
CN202010082764.5A 2020-02-07 2020-02-07 Solution regenerating unit and have its air dehydrating unit Pending CN111189130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010082764.5A CN111189130A (en) 2020-02-07 2020-02-07 Solution regenerating unit and have its air dehydrating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010082764.5A CN111189130A (en) 2020-02-07 2020-02-07 Solution regenerating unit and have its air dehydrating unit

Publications (1)

Publication Number Publication Date
CN111189130A true CN111189130A (en) 2020-05-22

Family

ID=70708359

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010082764.5A Pending CN111189130A (en) 2020-02-07 2020-02-07 Solution regenerating unit and have its air dehydrating unit

Country Status (1)

Country Link
CN (1) CN111189130A (en)

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