CN114923232B - Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system - Google Patents
Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system Download PDFInfo
- Publication number
- CN114923232B CN114923232B CN202210347278.0A CN202210347278A CN114923232B CN 114923232 B CN114923232 B CN 114923232B CN 202210347278 A CN202210347278 A CN 202210347278A CN 114923232 B CN114923232 B CN 114923232B
- Authority
- CN
- China
- Prior art keywords
- ionic liquid
- solution
- concentration
- liquid
- waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002608 ionic liquid Substances 0.000 title claims abstract description 169
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 24
- 238000007791 dehumidification Methods 0.000 title claims abstract description 20
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 17
- 238000004378 air conditioning Methods 0.000 title claims abstract description 13
- 230000004044 response Effects 0.000 title claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 230000000638 stimulation Effects 0.000 claims abstract description 7
- 230000004936 stimulating effect Effects 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000002699 waste material Substances 0.000 claims description 33
- 238000005507 spraying Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 239000002274 desiccant Substances 0.000 claims description 5
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 claims description 5
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 claims description 4
- 102100032373 Coiled-coil domain-containing protein 85B Human genes 0.000 claims description 4
- 101000868814 Homo sapiens Coiled-coil domain-containing protein 85B Proteins 0.000 claims description 4
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 65
- 230000008929 regeneration Effects 0.000 abstract description 17
- 238000011069 regeneration method Methods 0.000 abstract description 17
- 239000002918 waste heat Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 description 13
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 1
- 229940043276 diisopropanolamine Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to a carbon dioxide stimulus response ionic liquidDehumidifying air-conditioning system by CO 2 The stimulation causes the ionic liquid aqueous solution to be rendered hydrophilic and hydrophobic under dehumidification and regeneration conditions, respectively. CO is introduced into 2 The ionic liquid after the process shows hydrophilicity, dehumidifies the air in a dehumidifier, and sends the air into solution-CO after passing through a solution heat exchanger 2 CO in solution is removed by utilizing low-grade heat in separation device 2 The ionic liquid is converted from hydrophilicity to hydrophobicity, the separated ionic liquid lean solution enters a regenerator for further regeneration, the ionic liquid rich solution is mixed with the regenerated ionic liquid, and CO is introduced again after passing through a solution heat exchanger 2 The stimulus is applied to dehumidify. The invention utilizes CO 2 The ionic liquid is hydrophilic and hydrophobic according to the requirements by stimulating the property of the response ionic liquid, can use lower regeneration temperature, can effectively utilize low-grade waste heat, and can be widely applied to places with low-grade heat energy and air dehumidification cooling regulation requirements.
Description
Technical Field
The invention relates to the field of dehumidifying air conditioners, in particular to a carbon dioxide stimulus response ionic liquid dehumidifying air conditioning system.
Background
Because of the rapid development of the industrial level in China, the energy consumption is always in an upward trend, and a large amount of waste heat is difficult to utilize in the industrial production process; meanwhile, a plurality of technological processes and working environments have certain requirements on the heat and humidity conditions, so that how to better utilize low-grade waste heat and solve the problem of the heat and humidity environments is very important.
The solution dehumidification mode is widely applied to humidity control demand places because of the advantages of low-grade waste heat utilization, driving regeneration and the like.
However, a desiccant solution having a high dehumidification capacity generally has a lower saturated vapor pressure at a high temperature, and thus requires a higher heat source temperature to drive regeneration.
The industrial low-grade waste heat is usually low in temperature, so that the method for obtaining the dehumidifying solution which is strong in dehumidifying capability and can utilize lower-grade heat energy to drive regeneration is an effective method for improving the dehumidifying performance and better utilizing the low-grade waste heat.
[C 4 DIPA][Im]Ionic liquids, namely n-butyl diisopropanolamine imidazole;
[C n MDEA][2-Pyr](n= 8,10,12,14,16,18) ionic liquids, namely n-alkyl-n-methyldiethanolamine 2-pyrrolidone.
Disclosure of Invention
The invention aims to solve the technical problems: the invention aims to solve the problems of low temperature and low efficiency of driving regeneration dehumidifying solution in low-grade waste heat in the prior art, and provides a carbon dioxide stimulation response ionic liquid dehumidifying air conditioning system.
The technical scheme of the invention is as follows: the invention relates to a carbon dioxide stimulus response ionic liquid dehumidifying air-conditioning system, which uses CO 2 The ionic liquid with stimulus response is a circulating substance and uses CO 2 The ionic liquid is stimulated to be converted from hydrophobicity to hydrophilicity and is applied to dehumidification.
Further, the ionic liquid is dehumidified to generate waste ionic liquid, and CO in the waste ionic liquid is caused by heating the waste ionic liquid 2 Escaping, and converting the waste ionic liquid from hydrophilicity to hydrophobicity; the waste ionic liquid and water are subjected to phase separation, and high-concentration ionic liquid and low-concentration ionic liquid are separated;
the high-concentration ionic liquid is treated by CO 2 After stimulation, the water is converted into hydrophilic and is applied to dehumidification;
after the low-concentration ionic liquid is heated, removing redundant water to generate regenerated high-concentration ionic liquid, wherein the regenerated high-concentration ionic liquid is subjected to CO 2 After stimulation, the water is converted from hydrophobicity to hydrophilicity, and the water is applied to dehumidification.
Further, comprises a dehumidifier and a solution-CO 2 Mixing device, solution-CO 2 A separation device and a regenerator;
the solution-CO 2 The separation device heats the waste ionic liquid through a heat source to separate CO in the waste ionic liquid 2 Rendering the waste ionic liquid hydrophobic;
the waste ionic liquid is split in phase with water, the concentration of the ionic liquid near the rich phase liquid outlet end of the ionic liquid rich liquid layer is high, and the concentration of the ionic liquid near the lean phase liquid outlet end of the ionic liquid lean liquid layer is low;
the high-concentration ionic liquid output from the rich-phase liquid outlet end passes through solution-CO 2 The mixing device makes the ionic liquid hydrophilic and then sends the ionic liquid into a dehumidifier for dehumidification;
the low-concentration ionic liquid output from the liquid outlet end of the lean phase passes through a regenerator, and after part of water is evaporated, regenerated high-concentration ionic liquid is generated, and the regenerated high-concentration ionic liquid passes through solution-CO 2 The mixing device makes the ionic liquid hydrophilic and then sends the ionic liquid into a dehumidifier for dehumidification.
Further, the solution-CO 2 A separation heat exchange coil is arranged in the separation device, and the heat source continuously heats water in the separation heat exchange coil; the separation heat exchange coil pair enters the solution-CO 2 The waste ionic liquid of the separation device is heated.
Further, it also includes a step of preparing the solution-CO 2 CO of carbon dioxide gas supplied by mixing device 2 A storage tank; CO in the waste ionic liquid 2 Delivery to the solution-CO via the carbon dioxide evolution end 2 A mixing device;
the solution-CO 2 A spraying device is arranged in the mixing device, and the regenerated high-concentration ionic liquid is sprayed to the solution-CO 2 In the mixing device, with CO 2 CO at the outlet of the storage tank 2 Fully mixing to make the ionic liquid have hydrophilicity.
Further, a heat exchanger is included; waste ionic liquid discharged by the dehumidifier enters solution-CO through the heat exchanger 2 A separation device;
the regenerated high-concentration ionic liquid output by the regenerator enters the solution-CO through the heat exchanger 2 A mixing device;
the high-concentration ionic liquid and the waste ionic liquid exchange heat in the heat exchanger.
The high concentration ionic liquid transfers heat to the spent ionic liquid.
Further, the high concentration solution output from the rich phase liquid end is mixed with the regenerated high concentration solution output from the regenerator to enter the solution-CO 2 A mixing device.
Furthermore, the dehumidifier is an internal cooling type flat membrane dehumidifier, and comprises an air channel and a solution channel, wherein the solution channel comprises a cooling pipe, so that the air can be dehumidified and cooled; the cooling pipe is used for continuously cooling water in the solution channel, and the solution channel is used for cooling the high-concentration ion liquid or the regenerated high-concentration ion liquid entering the dehumidifier so as to enable the high-concentration ion liquid or the regenerated high-concentration ion liquid to absorb moisture in the air and cool the air;
a heat exchange coil and a solution spraying device are arranged in the regenerator; the heat source continuously heats the water in the heat exchange coil, and the heat exchange coil heats the low-concentration ionic liquid entering the regenerator so as to evaporate the water in the low-concentration ionic liquid.
Further, the heat source is a low-grade heat source.
Further, the ionic liquid comprises [ C 4 DIPA][Im]Ionic liquids, [ C ] n MDEA][2-Pyr](n= 8,10,12,14,16,18) ionic liquids.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can improve the utilization efficiency of low-grade heat energy, and the dehumidified dilute solution removes CO 2 The ionic liquid is stimulated to generate hydrophobicity, so that the ionic liquid concentration difference exists in the solution to form an ionic liquid rich liquid area and an ionic liquid lean liquid area, and the ionic liquid concentration in the rich liquid area is higher and the ionic liquid concentration is higher through CO 2 After stimulation, the air can be continuously dehumidified, the concentration of the ionic liquid in the lean liquid area is lower, the ionic liquid can be sent into a regenerator for regeneration, and a part of ionic liquid is recovered first to reduce the concentration of the solution and make the water content higherThe method is more beneficial to the evaporation and regeneration of water, thereby improving the regeneration efficiency.
2. Is provided with a heat exchanger, regenerated high-concentration ionic liquid regenerated by the regenerator and solution-CO 2 Mixing the high-concentration ionic liquid output by the separation device and then carrying out heat exchange with the low-concentration ionic liquid in the heat exchanger; the regenerated high-concentration ionic liquid transfers heat to the low-concentration ionic liquid, so that the temperature of the low-concentration ionic liquid is increased, and the energy utilization of a low-grade heat source in the regenerator is further improved.
3. The invention adopts the ionic liquid for dehumidification, which has small corrosiveness to metal, high thermal stability and small vapor pressure; the method can solve the serious problems of relatively high vapor pressure of working media, high corrosiveness to metal equipment and the like in the existing solution dehumidification technology.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a dehumidification air conditioning system of the present disclosure;
FIG. 2 shows the solution-CO in the present invention 2 A specific structural schematic diagram of the separation device;
fig. 3 is a schematic diagram showing a specific structure of the dehumidifier according to the present invention.
Detailed Description
In order to enhance the understanding of the present invention, the present invention will be further described in detail with reference to the drawings, which are provided for the purpose of illustrating the present invention only and are not to be construed as limiting the scope of the present invention.
Referring to fig. 1-3, a CO 2 Examples of stimulus responsive ionic liquid desiccant air conditioning systems include dehumidifier 1, regenerator 8, heat exchanger 6, solution-CO 2 Mixing device 5, solution-CO 2 A separation device 7;
the ionic liquid dehumidifier 1 is provided with an air inlet, an air outlet, a solution inlet, a solution outlet and a cooling pipe; the air outlet is connected with the dehumidifier fan 2, the solution inlet is connected with the third solution pump 15, and the solution outlet is connected with the heat exchanger 6.
The dehumidifier 1 is used for dehumidifying air, a cooling pipe is arranged in a solution channel in the dehumidifier 1 and used for cooling the solution so as to treat the temperature of the air to a proper level;
the regenerator 8 is provided with an air inlet, an air outlet, a solution inlet, a solution outlet, a solution spraying device and a heat exchange coil; the air outlet is connected with a regenerator fan 9, the solution outlet is connected with a regeneration solution pump 10, and the solution inlet is connected with solution-CO 2 The separating device 7 is connected; the regenerator fan 9 is used for sending the regeneration air into the regenerator 8 so as to lead the regeneration air to carry away the moisture in the ionic liquid, so that the concentration of the ionic liquid is improved.
The regenerator 8 is internally provided with a heat exchange coil and a solution spraying device, the solution spraying device can uniformly spray the solution on the surface of the filler to achieve a better regeneration effect, and the heat exchange coil is used for driving the solution to regenerate;
solution-CO 2 The mixing device 5 is provided with a solution inlet, a solution outlet and a CO 2 An inlet; the solution inlet is connected with the heat exchanger 6, the solution outlet is connected with the second solution pump 15, and CO 2 Inlet and CO 2 The storage tank 14 is connected; solution-CO 2 A spraying device is arranged in the mixing device 5 to make the ions and CO 2 Fully contacted, so that the ionic liquid has hydrophilicity and is better dehumidified;
solution-CO 2 The separation device 7 is provided with a solution inlet 74, a rich phase liquid outlet end 73, a lean phase liquid outlet end 72, a carbon dioxide escape end 71 and a heat exchange coil;
the solution inlet 74 is connected with the heat exchanger 6, the first liquid outlet end is connected with the regenerator 8, the second liquid outlet end is connected with the regulating valve 16, and CO 2 Outlet and CO 2 The storage tank 14 is connected;
the waste ionic liquid is split in phase with water, the concentration of the ionic liquid near the rich phase liquid outlet end 73 of the ionic liquid rich liquid layer 701 is high, and the concentration of the ionic liquid near the lean phase liquid outlet end 72 of the ionic liquid lean liquid layer 702 is low;
the low-grade heat source 13 continuously heats water in the heat exchange coil, the heat exchange coil 131 heats the ionic liquid aqueous solution, and CO in the ionic liquid aqueous solution is separated 2 Simultaneously, the ionic liquid has hydrophobicity, and the ionic liquid and water are separated to ensure that the concentration of the ionic liquid near the first liquid outlet end is low, and the ionic liquid near the second liquid outlet end is an ionic liquid lean liquid areaThe bulk concentration is high, and the ionic liquid rich liquid area is formed; mixing the ionic liquid rich solution with the regenerated solution, continuously dehumidifying, and sending the ionic liquid lean solution into a regenerator 8 for heating regeneration;
the heat exchanger 6 is provided with a first liquid inlet end, a second liquid inlet end, a first liquid outlet end and a second liquid outlet end, wherein the first liquid inlet end is connected with the dehumidifier 1, the second liquid inlet end is connected with the regenerated solution pump 10 and the regulating valve 16, and the first liquid outlet end is connected with the solution-CO 2 The separation device 7 is connected with the second liquid outlet end and the solution-CO 2 The mixing device 5 is connected;
the solution-solution heat exchanger 6 is used for mixing the ionic liquid at the outlet of the dehumidifier with the regenerator 8 and the solution-CO 2 The ion liquid rich liquid at the outlet of the separation device 7 exchanges heat, and the ion liquid after heat exchange respectively enters solution-CO 2 Separation device 7 and solution-CO 2 A mixing device 5;
in the above example, the ionic liquid comprises [ C 4 DIPA][Im]Ionic liquids, [ C ] n MDEA][2-Pyr](n= 8,10,12,14,16,18) ionic liquids and CO 2 An ionic liquid having a reversible hydrophilic-hydrophobic transition upon stimulation; containing CO 2 The high-concentration ionic liquid solution in the air can absorb moisture in the air to be changed into low-concentration ionic liquid solution; ionic liquids can be purified by removing CO 2 Generating hydrophobicity to realize rapid recovery of ionic liquid.
As shown in fig. 1, in the working condition, the dehumidifier 1 is an internal cooling type flat membrane dehumidifier, and comprises an air channel and a solution channel, wherein the solution channel comprises a cooling pipe, so that the air can be dehumidified and cooled; under the action of the dehumidifying water pump 4, the cooling device 3 continuously carries out circulating cooling on water in the solution channel through a cooling pipe; the solution channel cools the high-concentration ion liquid or the regenerated high-concentration ion liquid entering the dehumidifier 1 so as to enable the high-concentration ion liquid or the regenerated high-concentration ion liquid to absorb moisture in the air and cool the air; the air outlet of the dehumidifier 1 is connected with a dehumidifier fan 2;
the cooling device 3 continuously cools the water in the heat exchange coil, and the dehumidifying water pump 4 is used for circulating the water from the cooling device 3 to the heat exchange coil; the dehumidifier fan 2 is used for sending air into the dehumidifier 1 to enable the ionic liquid to absorb moisture in the air;
the waste ion solution after participating in absorbing the moisture in the air is output by the heat exchanger 6 and the regenerator 8 to regenerate high-concentration ion liquid and solution-CO 2 After the high-concentration ionic liquid which is output by the separation device and mixed with the high-concentration ionic liquid exchanges heat, the high-concentration ionic liquid transfers heat to the waste ionic liquid, and the waste ionic liquid enters solution-CO 2 A separation device 7;
solution-CO 2 A separation heat exchange coil is arranged in the separation device 7, and a heat source 13 continuously heats water in the separation heat exchange coil under the action of a heat source water pump 12; separating heat exchange coil pair entering solution-CO 2 The waste ionic liquid of the separating device 7 is heated to make CO in the waste ionic liquid 2 Escaping, changing the waste ionic liquid from hydrophilicity to hydrophobicity, and layering the ionic liquid and water; the upper layer is an ionic liquid rich liquid layer 701, provided with a rich phase liquid outlet end 73, and the lower layer is an ionic liquid lean liquid layer 702, provided with a lean phase liquid outlet end 72.
The high-concentration ionic liquid output from the rich-phase liquid outlet end 73 exchanges heat with the waste ionic solution through the heat exchanger 6 and then is subjected to solution-CO 2 In the mixing device 5, with CO 2 Storage tank 14 stores the solution-CO 2 CO delivered by the mixing device 5 2 Mixing to make the ionic liquid hydrophilic, and delivering the ionic liquid into a dehumidifier 1 for dehumidification after making the ionic liquid hydrophilic;
the low-concentration ionic liquid output by the lean phase liquid outlet end 72 passes through a regenerator 8, part of water is evaporated to generate regenerated high-concentration ionic liquid, the regenerated high-concentration ionic liquid exchanges heat with waste ionic solution through a heat exchanger 6 under the action of a regenerated solution pump 10, and the regenerated high-concentration ionic liquid passes through solution-CO 2 The mixing device 5 hydrophilizes the ionic liquid, and then, the ionic liquid is sent to the dehumidifier 1 to dehumidify.
Wherein the solution is-CO 2 The separation device 7 is provided with a phase-rich liquid outlet end 73; the high concentration solution output from the rich phase liquid outlet end 73 is mixed with the regenerated high concentration solution output from the regenerator 8 to enter solution-CO 2 A mixing device 5.
Wherein,the heat source 13 is simultaneously solution-CO 2 The separation device 7 and the regenerator 8 supply heat, specifically, a heat source 13 heats water in a heat exchange coil in the regenerator 8 through a regeneration water pump 11, an air outlet of the regenerator 8 is connected with a regenerator fan 9, and a solution outlet is connected with a regeneration solution pump 10.
The heat source 13 continuously heats water in the separation heat exchange coil under the action of the heat source water pump 12;
solution-CO 2 The mixing device 5 supplies CO of carbon dioxide gas 2 A storage tank 14; solution-CO 2 A spraying device is arranged in the mixing device 5, and the regenerated high-concentration ionic liquid is sprayed to the solution-CO 2 In the mixing device 5, with CO 2 CO at the outlet of the storage tank 14 2 Fully mixing to make the ionic liquid have hydrophilicity.
The regenerated high-concentration ionic liquid output by the regenerator 8 enters solution-CO through the heat exchanger 6 2 A mixing device 5; a heat exchange coil and a solution spraying device are arranged in the regenerator 8; the heat source 13 is a low-grade heat source, and can continuously heat water in the heat exchange coil, and the heat exchange coil heats the low-concentration ionic liquid entering the regenerator 8 so as to evaporate water in the low-concentration ionic liquid.
The foregoing detailed description will set forth only for the purposes of illustrating the general principles and features of the invention, and is not meant to limit the scope of the invention in any way, but rather should be construed in view of the appended claims.
Claims (5)
1. A carbon dioxide stimulus responsive ionic liquid dehumidification air conditioning system, characterized in that: the ionic liquid responding to CO2 stimulation is used as a circulating substance, and CO2 is used for stimulating the ionic liquid to be converted from hydrophobicity to hydrophilicity and applied to dehumidification; generating waste ionic liquid after dehumidification of the ionic liquid;
comprises a dehumidifier (1), a solution-CO 2 mixing device (5), a solution-CO 2 separating device (7) and a regenerator (8);
the solution-CO 2 separation device (7) heats the waste ionic liquid through a heat source (13) to separate CO2 in the waste ionic liquid, so that the waste ionic liquid has hydrophobicity;
the waste ionic liquid is split in phase with water, the concentration of the ionic liquid near the rich phase liquid outlet end (73) of the ionic liquid rich liquid layer (701) is high, and the concentration of the ionic liquid near the lean phase liquid outlet end (72) of the ionic liquid lean liquid layer (702) is low;
the high-concentration ionic liquid output by the rich phase liquid outlet end (73) is subjected to heat exchange with the waste ionic solution through a heat exchanger (6) and then subjected to solution-CO 2 In the mixing device (5), with CO 2 A storage tank (14) for supplying the solution-CO 2 CO transported by the mixing device (5) 2 Mixing, namely, after the ionic liquid has hydrophilicity, sending the ionic liquid into a dehumidifier (1) for dehumidification;
the low-concentration ionic liquid output by the lean phase liquid outlet end (72) passes through a regenerator (8) to evaporate part of water to generate regenerated high-concentration ionic liquid, and the regenerated high-concentration ionic liquid is sent to a dehumidifier (1) to dehumidify after being made hydrophilic by a solution-CO 2 mixing device (5);
the device also comprises a CO2 storage tank (14) for providing carbon dioxide gas for the solution-CO 2 mixing device (5); CO2 in the waste ionic liquid is conveyed to the solution-CO 2 mixing device (5) through a carbon dioxide escape end (71);
a spraying device is arranged in the solution-CO 2 mixing device (5), and the regenerated high-concentration ionic liquid is sprayed into the solution-CO 2 mixing device (5) and is fully mixed with CO2 at the outlet of the CO2 storage tank (14) so that the ionic liquid has hydrophilicity;
comprises a heat exchanger (6); waste ionic liquid discharged by the dehumidifier (1) enters a solution-CO 2 separation device (7) through the heat exchanger (6);
the regenerated high-concentration ionic liquid output by the regenerator (8) enters the solution-CO 2 mixing device (5) through the heat exchanger (6);
the regenerated high-concentration ionic liquid and the waste ionic liquid are subjected to heat exchange in the heat exchanger (6);
the regenerated high-concentration ionic liquid transfers heat to the waste ionic liquid;
the heat source (13) is a low-grade heat source.
2. The carbon dioxide-stimulated response ionic liquid desiccant air conditioning system of claim 1, wherein: a separation heat exchange coil is arranged in the solution-CO 2 separation device (7), and the heat source (13) continuously heats water in the separation heat exchange coil; the separation heat exchange coil is used for heating the waste ionic liquid entering the solution-CO 2 separation device (7).
3. The carbon dioxide-stimulated response ionic liquid desiccant air conditioning system of claim 1, wherein: and the high-concentration solution output by the rich phase liquid outlet end (73) and the regenerated high-concentration solution output by the regenerator (8) are mixed and enter the solution-CO 2 mixing device (5).
4. The carbon dioxide-stimulated response ionic liquid desiccant air conditioning system of claim 1, wherein: the dehumidifier (1) is an internal cooling type flat membrane dehumidifier, and comprises an air channel and a solution channel, wherein the solution channel comprises a cooling pipe, so that the air can be dehumidified and cooled; the cooling pipe is used for continuously cooling water in the solution channel, and the solution channel is used for cooling the high-concentration ion liquid or the regenerated high-concentration ion liquid entering the dehumidifier (1) so as to enable the high-concentration ion liquid or the regenerated high-concentration ion liquid to absorb moisture in the air and cool the air;
a heat exchange coil and a solution spraying device are arranged in the regenerator (8); the heat source (13) continuously heats the water in the heat exchange coil, and the heat exchange coil heats the low-concentration ionic liquid entering the regenerator (8) so as to evaporate the water in the low-concentration ionic liquid.
5. The carbon dioxide-stimulated response ion of any one of claims 1-4The liquid dehumidification air conditioning system is characterized in that: the ionic liquid comprises [ C 4 DIPA][Im]Ionic liquids, [ C ] n MDEA][2-Pyr](n= 8,10,12,14,16,18) ionic liquids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210347278.0A CN114923232B (en) | 2022-04-01 | 2022-04-01 | Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210347278.0A CN114923232B (en) | 2022-04-01 | 2022-04-01 | Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114923232A CN114923232A (en) | 2022-08-19 |
| CN114923232B true CN114923232B (en) | 2024-04-05 |
Family
ID=82805080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210347278.0A Active CN114923232B (en) | 2022-04-01 | 2022-04-01 | Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114923232B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335545A (en) * | 2010-07-22 | 2012-02-01 | 中国科学院理化技术研究所 | Dehumidifying agent for air dehumidification, method and device for air dehumidification |
| CN102519299A (en) * | 2011-12-15 | 2012-06-27 | 东南大学 | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air |
| CN106288097A (en) * | 2016-10-14 | 2017-01-04 | 浙江大学 | The air treatment system that trans critical cycle is compound with solution dehumidification system |
| CN113757841A (en) * | 2021-08-19 | 2021-12-07 | 东南大学 | Low-grade heat step driving heat and humidity decoupling processing air conditioning system |
-
2022
- 2022-04-01 CN CN202210347278.0A patent/CN114923232B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335545A (en) * | 2010-07-22 | 2012-02-01 | 中国科学院理化技术研究所 | Dehumidifying agent for air dehumidification, method and device for air dehumidification |
| CN102519299A (en) * | 2011-12-15 | 2012-06-27 | 东南大学 | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air |
| CN106288097A (en) * | 2016-10-14 | 2017-01-04 | 浙江大学 | The air treatment system that trans critical cycle is compound with solution dehumidification system |
| CN113757841A (en) * | 2021-08-19 | 2021-12-07 | 东南大学 | Low-grade heat step driving heat and humidity decoupling processing air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114923232A (en) | 2022-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105709563B (en) | Absorption type removing and concentrating device | |
| US6887303B2 (en) | Device for continuously humidifying and dehumidifying feed air | |
| US6156102A (en) | Method and apparatus for recovering water from air | |
| CN108187459B (en) | Air spiral type membrane dehumidifier, electrodialysis regeneration device and dehumidification heating system thereof | |
| TWI702080B (en) | Absorption removal/concentration device | |
| US7160362B2 (en) | Method and device for cleaning air | |
| CN206055832U (en) | The solar energy solution dehumidification system of unit is cooled down for double flash evaporation | |
| US20220243932A1 (en) | Electrochemical dehumidifier with multiple air contactors | |
| CN102345873B (en) | Integrated flue gas dehumidifying and wet cooling tower system | |
| CN109626472A (en) | Air hot type heat pump humidifies dehumidification seawater desalination system and its working method | |
| CN114452768A (en) | CO based on wet-process regenerated adsorption material2Direct air capture system and method | |
| EP0390815A1 (en) | A process for gas conditioning. | |
| CN114270106A (en) | Absorption type removing/concentrating device | |
| CN215486191U (en) | Device system for capturing energy of carbon dioxide analysis tower by amine method | |
| CN114923232B (en) | Carbon dioxide stimulus response ionic liquid dehumidification air conditioning system | |
| CN114515494A (en) | Direct air capture carbon dioxide energy saving system and method with precise ion control | |
| CN212832916U (en) | High-salinity wastewater purification device | |
| CN112032865B (en) | Falling film type liquid humidity regulator and method based on high-voltage electrostatic field polarization effect | |
| CN102519299B (en) | System capable of improving cooling effect of cooling tower by means of reducing moisture content of air | |
| US20240280275A1 (en) | Air treatment system | |
| US10808949B2 (en) | Humidity management device and method | |
| CN114923230B (en) | Magnetic stimulus response ionic liquid dehumidification air conditioning system | |
| CN114923233B (en) | Light stimulus response ionic liquid dehumidification air conditioning system | |
| CN106517449B (en) | Solution regeneration device capable of improving current efficiency | |
| CN206291383U (en) | A kind of twin-stage solar energy solution dehumidification system that unit is cooled down for double flash evaporation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |