CN102335545A - Dehumidifying agent for air dehumidification, method and device for air dehumidification - Google Patents
Dehumidifying agent for air dehumidification, method and device for air dehumidification Download PDFInfo
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- CN102335545A CN102335545A CN2010102375583A CN201010237558A CN102335545A CN 102335545 A CN102335545 A CN 102335545A CN 2010102375583 A CN2010102375583 A CN 2010102375583A CN 201010237558 A CN201010237558 A CN 201010237558A CN 102335545 A CN102335545 A CN 102335545A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007791 dehumidification Methods 0.000 title claims abstract description 20
- 239000002608 ionic liquid Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- -1 phosphine cation Chemical class 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000008929 regeneration Effects 0.000 claims description 9
- 238000011069 regeneration method Methods 0.000 claims description 9
- 150000001449 anionic compounds Chemical class 0.000 claims description 8
- 229910001412 inorganic anion Inorganic materials 0.000 claims description 8
- 150000002892 organic cations Chemical class 0.000 claims description 8
- 150000002466 imines Chemical class 0.000 claims description 6
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 claims description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 4
- SWJXMGRMNOQWRO-UHFFFAOYSA-N C[n+]1cc[nH]c1.COP([O-])(=O)OC Chemical compound C[n+]1cc[nH]c1.COP([O-])(=O)OC SWJXMGRMNOQWRO-UHFFFAOYSA-N 0.000 claims description 3
- NPGXALYHLQTILN-UHFFFAOYSA-N N1=CC=CC2=CC=CC=C12.C(C)N1CN(C=C1)C Chemical compound N1=CC=CC2=CC=CC=C12.C(C)N1CN(C=C1)C NPGXALYHLQTILN-UHFFFAOYSA-N 0.000 claims description 3
- WYIBRZKNSPETMO-UHFFFAOYSA-N N1=CC=CC2=CC=CC=C12.C(CCC)N1CN(C=C1)C Chemical compound N1=CC=CC2=CC=CC=C12.C(CCC)N1CN(C=C1)C WYIBRZKNSPETMO-UHFFFAOYSA-N 0.000 claims description 3
- UNLFUFQHYWLHRE-UHFFFAOYSA-N P(=O)(OCC)(OCC)O.C(CCC)N1CN(C=C1)C Chemical compound P(=O)(OCC)(OCC)O.C(CCC)N1CN(C=C1)C UNLFUFQHYWLHRE-UHFFFAOYSA-N 0.000 claims description 3
- ZDIRKWICVFDSNX-UHFFFAOYSA-N diethyl phosphate 1-ethyl-3-methyl-1,2-dihydroimidazol-1-ium Chemical compound P(=O)(OCC)(OCC)O.C(C)N1CN(C=C1)C ZDIRKWICVFDSNX-UHFFFAOYSA-N 0.000 claims description 3
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 86
- 239000007788 liquid Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000007864 aqueous solution Substances 0.000 abstract description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 abstract description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000012266 salt solution Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 3
- 229910001628 calcium chloride Inorganic materials 0.000 abstract description 3
- 239000001110 calcium chloride Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- IQQRAVYLUAZUGX-UHFFFAOYSA-N 1-butyl-3-methylimidazolium Chemical compound CCCCN1C=C[N+](C)=C1 IQQRAVYLUAZUGX-UHFFFAOYSA-N 0.000 description 6
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000009102 absorption Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 239000012766 organic filler Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 description 2
- KKUKTXOBAWVSHC-UHFFFAOYSA-N Dimethylphosphate Chemical compound COP(O)(=O)OC KKUKTXOBAWVSHC-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 231100000252 nontoxic Toxicity 0.000 description 2
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Abstract
The invention discloses a dehumidifying agent for air dehumidification, which is an ionic liquid solution formed by dissolving an ionic liquid with a melting point close to room temperature or lower than room temperature, which is composed of organic positive ions and inorganic negative ions, in water. And further discloses a method and a device for dehumidifying air by using the dehumidifying agent. Compared with the traditional salt solution (aqueous solutions of lithium bromide, lithium chloride, calcium chloride and the like), the invention has the following advantages: 1) the ionic liquid solution is in a liquid state at normal temperature, is mutually soluble with water, cannot be crystallized in operation, and ensures the reliable operation of the system; 2) the water vapor partial pressure of the ionic liquid solution is similar to or lower than that of the traditional dehumidifying salt solution, so that the dehumidifying efficiency is high; 3) the ionic liquid solution has no corrosion to metal equipment such as steel and the like, and the equipment has low cost and long service life; 4) has non-volatility and reduces the pollution to the environment, etc.
Description
Technical field
The present invention relates to a kind of dehumidizer that is used for air dewetting, and the method and apparatus that adopts this dehumidizer that air is dehumidified.
Background technology
Along with industrial expansion and growth in the living standard, dehumidifying obtains people's attention gradually and has produced multiple dehumanization method, comprises air themperature is reduced to below the dew-point temperature dehumidification by condensation method that moisture is separated out; Pressurization makes the steam partial pressure of air raise the pressurization that steam is separated out; Solid or fluent material that use has wet-out property directly contact with air, realize the dehumidifying of air.Be used widely owing to the liquid dehumidifying material has the following advantages: (1) is easy to realize isothermal dehumidifying, and irreversible loss is little, and the thermodynamics sophistication is high; (2) can use more low-grade heat energy as drive energy; (3) there is not big moving component, simple in structure, be easy to miniaturization; (4) can remove nuisances such as airborne dust, bacterium, improve air quality.
For liquid dehumidifying commonly used, the performance of dehumidification solution is the key factor that influences liquid dehumidifying air-conditioning system.Desired dehumidizer characteristic has: under identical temperature, the concentration, the dehumidizer superficial vapor is pressed lower; Dehumidizer has bigger solubility for airborne moisture, can improve absorptivity like this and reduce the consumption of solution dehumidification agent; Dehumidizer does not absorb or absorbs very little when the water in air branch being had strong absorbability basically to other components in the mist, otherwise can not effectively realize separation; Low viscosity to reduce the conveying power consumption of pump, reduces heat transmission resistance; Higher boiling, the high condensation heat and the heat of dilution, low-freezing; The dehumidizer stable in properties, low volatility, low-corrosiveness, avirulence; Cheap, obtain easily.
Hygroscopicity solution such as calcium chloride, lithium chloride and lithium bromide often are used as dehumidizer, but the inherent defect of its existence comprises easy crystallization, have corrosivity and contaminated environment etc.
Summary of the invention
The object of the invention at first provide a kind of non-volatile, with water dissolve each other non-crystallizable, to the dehumidizer that is used for air dewetting of metal non-corrosiveness such as iron and steel, high thermal stability, liquid journey wider range, nontoxic odorless, environmentally safe.
Another object of the present invention provides a kind of method that adopts above-mentioned dehumidizer that air is dehumidified.
Further aim of the present invention provides the device that is used for said method.
In order to achieve the above object, technical scheme of the present invention is following:
A kind of dehumidizer that is used for air dewetting, the fusing point that constitutes for organic cation and inorganic anion is near room temperature or be lower than the ionic liquid solution that the water-soluble back of ionic liquid of room temperature forms.It is working media that the solution dehumidification technology adopts the ionic liquid solution with humidity conditioning function; Utilize the moisture absorption and the moisture releasing characteristic of solution that air humidity is controlled, ionic liquid solution and airborne steam partial pressure difference are the two driving gesture of carrying out moisture transmission.The steam partial pressure of ionic liquid solution used in the present invention is similar or have than its lower steam partial pressure with dehumidifying salting liquid (like lithium bromide, lithium chloride and calcium chloride etc.) at present commonly used.That but the ionic liquid solution that the present invention uses has is non-volatile, with water dissolve each other non-crystallizable, to the characteristics of metal non-corrosiveness such as iron and steel, high thermal stability, liquid journey wider range (for-40～300 ℃), nontoxic odorless, environmentally safe; Therefore use it for dehumidifying, can effectively solve customary salt solution owing to have problem of environment pollution caused that volatility causes and the high problem of equipment cost that customary salt solution causes more greatly metal protection.
Above-mentioned dehumidizer; Wherein said organic cation can be any organic cation with good wet-out property, any one in preferred quaternary ammonium cation 、 quaternary phosphine cation, glyoxaline cation, pyridylium, thiazole cation, triazole cation, pyrrolin cation, thiazoline cation, guanidine cation, BTA cation and the derivative thereof.
Above-mentioned dehumidizer, wherein said inorganic anion can be any inorganic anions with good wet-out property, preferred [BF
4]
-, [CF
3SO
3]
-, [CH
3COO]
-, [CF
3COO]
-, [C
3F
7COO]
-, [(CF
3S O
2)
2N]
-, [(CH
3)
2PO
4]
-, [C
3F
7COO]
-, [C
4F
9S O
3]
-[(C
2F
5SO
2) N]
-[(CF
3SO
2)
3C]
-In any one.
Above-mentioned dehumidizer, wherein said ionic liquid most preferably is: 1-butyl-3-methyl imidazolium tetrafluoroborate ([BMIM] BF
4), 1-ethyl-3-methyl imidazolium tetrafluoroborate ([EMIM] BF
4), 1,3-methylimidazole dimethyl phosphate salt ([MMIM] [(CH
3)
2PO
4]), two (trifluoromethyl sulfonyl) imines ([EMIM] [(CF of 1-ethyl-3-methylimidazole quinoline
3SO
2)
2N]), two (trifluoromethyl sulfonyl) imines ([BMIM] [(CF of 1-butyl-3-methylimidazole quinoline
3SO
2)
2N]), 1,3-methylimidazole dimethyl phosphate ([MMIM] [(CH
3)
2PO
4]), 1-butyl-3-methylimidazole diethyl phosphate ([BMIM] [(CH
3)
2PO
4]), 1-ethyl-3-methylimidazole diethyl phosphate ([EMIM] [(CH
3)
2PO
4]), 1-propyl group-3-methyl imidazolium tetrafluoroborate ([C
3MIM] BF
4).
A kind of air dehumidification method, it adopts above-mentioned dehumidizer that air is dehumidified.Concrete grammar can for, adopt the dehumidizer of high concentration contact with air, from air, absorb the solution that moisture becomes low concentration, air becomes the lower dry air of humidity after passing through and dehumidifying; The solution that the solution of said low concentration is regenerated as high concentration after with water evaporates recycles.
The air dehumidifier that is used for said method; Comprise air dehumidifier, solution pump, solution regenerator; Connect into a dehumidifying regeneration cycle in proper order by solution line; Be provided with the dehumidizer of high concentration in the said air dehumidifier, said dehumidizer is the fusing point that constitutes of organic cation and inorganic anion near room temperature or is lower than the molten salt system that is in a liquid state that the water-soluble back of ionic liquid of room temperature forms.
Said apparatus, wherein said air dehumidifier are heat insulation-type dehumidifier or internally cooled dehumidifier.In the air dehumidifier of heat insulation-type, when the ionic liquid solution of high concentration absorbs airborne moisture, can discharge the latent heat of vaporization that steam condenses, make the temperature of air and ionic liquid solution all raise, the irreversible loss of moisture absorption process increases.Therefore adopt the air dehumidifier of internally cooled, moisture absorption process is cooled off, can realize the isothermal dehumidifying process, thereby reduce irreversible loss, raising dehumidification rate through external source.The cold water that cooling water, underground water or high evaporation temperature refrigeration (heat pump) unit that the low-temperature receiver of internally cooled dehumidifier can adopt cooling tower to produce produced.For contact area, the raising mass-transfer efficiency that improves ionic liquid solution and air, in air dehumidifier, fill filler, used filler can be metal packing or organic filler or combined stuffing in the air dehumidifier.Metal packing can improve heat transfer property when improving mass-transfer efficiency, help to realize isothermal dehumidifying; Organic filler stable performance, long service life; And can adopt the combined stuffing of metal packing and organic filler, to improve the performance and the service life of filler.
Said apparatus, wherein said solution regenerator utilizes regenerator etc. for can utilize heat energy to make the apparatus of water evaporates like existing heat supply heat supply network regenerator, heat pump heat supply regenerator, solar regenerator, electrical heating regenerator or waste heat/used heat.Through absorbing temperature and the surface water vapor pressure that outside heat improves ionic liquid solution, make moisture wherein be able to evaporation, solution becomes concentrated solution, recovers wettability power.
Said apparatus can also be provided with the concentrated solution jar between solution regenerator and air dehumidifier.Utilize concentrated solution to carry out accumulation of energy.The solution accumulation of energy is a chemical energy, and energy storage density is high, it is few to dissipate, and is can be at thermal source discontinuous or make full use of the stable operation of the system that can both guarantee under the situation of low-grade energy.
Technique scheme has following advantage: through adopting fusing point that special organic cation and inorganic anion constitute near room temperature or be lower than ionic liquid solution that the water-soluble back of ionic liquid of room temperature forms as dehumidizer; Reached the purpose of removing the water in air steam effectively, fast; And 1) dehumidizer is liquid at normal temperatures; Dissolve each other with water, being in operation not can crystallization, guarantees system's reliability service; 2) steam partial pressure of used ionic liquid solution is similar or have than its lower steam partial pressure with traditional dehumidifying salting liquid, thereby dehumidification rate is high; 3) used ionic liquid solution does not have corrosion to hardwares such as iron and steel, and equipment cost is low, the life-span is long; 4) used ionic liquid solution has fixedness again, has reduced the pollution to environment.
Description of drawings
Fig. 1 is the device sketch map of embodiment 1;
Fig. 2 is the device sketch map of embodiment 2;
Fig. 3 is the solar energy heating/regenerator sketch map among the embodiment 2;
Fig. 4 is the device sketch map of embodiment 3;
Fig. 5 is the device sketch map of embodiment 5.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Embodiment 1:
Adopt 1-butyl-3-methyl imidazolium tetrafluoroborate ([BMIM] [BF
4]) the aqueous solution be dehumidizer.
As shown in Figure 1, show according to a kind of air dehumidification method of the present invention and device.This dehumidification system comprises air dehumidifier 1; Solution regenerator 2 and solution pump 3; The ionic liquid solution of high concentration gets into the ionic liquid solution that becomes low concentration the air dehumidifier 1 behind the airborne steam of absorption from the d end and flows out from a end; It is regenerated from b end entering solution regenerator 2 under the effect of solution pump 3, and the heat that the part moisture in the ionic liquid solution of low concentration provides owing to regeneration heating device evaporates from the k end and is discharged into the environment, and the ionic liquid solution of low concentration becomes the ionic liquid solution of high concentration; Flow out solution regenerator 2 from the c end, get into next circulation; Regenerating medium gets into the solution regenerator 2 from the e end and carries out flowing out from the f end after the caloic exchange with ionic liquid solution; Highly humid air is become low humid air from the discharge of j end after the 1 quilt dehumidifying of i end entering air dehumidifier, send into air-conditioned room after the processing of lowering the temperature; In cold medium get into from g end and flow out from the h end after air dehumidifier 1 absorbs the heat of transformation.
Embodiment 2:
Adopt 1-ethyl-3-methyl imidazolium tetrafluoroborate ([EMIM] [BF
4]) the aqueous solution be dehumidizer.
Fig. 2 shows according to another kind of air dehumidification method of the present invention and device.This system comprises air dehumidifier 1, solution regenerator 2, solar thermal collector 4, heat-collecting pump 5 and concentrated solution jar 6 and solution pump 3, and they carry out the dehumidifying to air through the Driven by Solar Energy ionic liquid solution.
The solar energy great advantage is that it has matching in good season, and weather is warm more, when humidity is big more, and the solar radiation condition is good more, and available to add heat also big more; Because solar energy is a kind of energy of discontinuity, it is bigger influenced by Changes in weather, and for the operation that guarantees that the solar energy dehumidifier/air-conditioning system can continous-stable, accumulation of energy is a very crucial technology.When system heat sources is more abundant, store a certain amount of concentrated solution in the concentrated solution jar through regenerator regeneration, when the system heat sources heat supply is not enough, discharge into dehumidifier and accomplish air dewetting, remedied the defective of solar energy as the discontinuity of system heat sources.Also can alleviate simultaneously the contradiction on electric power peak, promptly utilize the low ebb electricity that solution is regenerated, when the peak, release ability, accomplish the air dewetting process.The employing of energy storage equipment can reduce solution system for the demand that continues thermal source, can reduce the design capacity of system simultaneously.
In diagram; Solar thermal collector 4 provides heat for solution regeneration: regenerating medium carries out flowing out from the i end after the energy exchange with the ionic liquid solution of low concentration in solution regenerator 2; Under the effect of heat-collecting pump, get into solar thermal collector from the j end, temperature raises behind the absorption solar radiant heat, flows out from the k end; H end from solution regenerator 2 gets into then, further handles the ionic liquid solution of low concentration.
Like Fig. 3, also can use solar energy heating/regenerator 9 to replace solar thermal collector 4 and solution regenerator 2.Solar energy heating/regenerator 9 has two kinds of functions of solar energy heating and regeneration simultaneously.This device utilizes outdoor air in solar energy heating/regenerator, to carry out heat and mass with the ionic liquid solution of low concentration, thereby makes solution concentration regeneration.
In diagram; Concentrated solution jar 6; Control valve 7 and by-passing valve 8 common control moisture removal: the ionic liquid solution of the high concentration that flows out when the c end from solution regenerator 2 is when handling the required ionic liquid solution amount of highly humid air; Can reduce the actual ionic liquid solution flow that gets into the high concentration in the air processors 1 through regulating by-passing valve 8, be stored in the concentrated solution jar 6 ionic liquid solution of part high concentration subsequent use; When the ionic liquid solution of the high concentration that flows out from the c of solution regenerator 2 end when handling the required ionic liquid solution amount of highly humid air; Then can increase the actual ionic liquid solution flow that gets into the high concentration in the air processors 1, be used for practical requirement through regulating control valve 7.
Embodiment 3:
Adopt 1, the aqueous solution of 3-methylimidazole dimethyl phosphate salt ([MMIM] [DMP]) is dehumidizer.
Fig. 4 shows according to another air dehumidification method of the present invention and device.This system comprises air dehumidifier 1; Solution regenerator 2 (air cooled condenser of a refrigeration unit) and solution pump 3; The condensation heat that provides through the refrigeration unit condenser is come the ionic liquid solution of low concentration regenerated and (outside this condenser coil, is sprayed the ionic liquid solution of low concentration; Utilize the evaporative condenser principle, thereby reclaim the regeneration that condensation heat reaches dehumidification solution).
In diagram; The air cooled condenser of one refrigeration unit provides the solution regenerated heat: the ionic liquid solution of low concentration gets into the air cooled condenser 2 from the b end; The absorptive condenser liberated heat is discharged from the f end of air cooled condenser 2 after the part water evaporates is absorbed by the dry air that gets into from the e mouth therein; The cold-producing medium that from compressor 10, flows out HTHP flows into from the g mouth of air cooled condenser 2, discharges from the h mouth after discharging condensation heat therein, in choke valve 11, carries out the throttling step-down, gets into evaporimeter 11 evaporation heat absorptions after becoming the low-temp low-pressure fluid; Medium is from o end entering evaporimeter, and flow out from the p end cooling back, is used as other purposes as cold water etc. is provided.
Embodiment 4:
Dehumidizer is two (trifluoromethyl sulfonyl) imines ([EMIM] [(CF of 1-ethyl-3-methylimidazole quinoline
3SO
2)
2N]) the aqueous solution.
Fig. 5 shows according to another air dehumidification method of the present invention and device, and present embodiment is the improvement to embodiment 3.This system comprises air dehumidifier 1; Comprise solution regenerator 2 (air cooled condenser of a source pump); Device for cooling 12 (evaporimeter of a source pump) and solution pump 3 in comprising; Condensation heat through the source pump condenser provides comes the ionic liquid solution of low concentration is regenerated, and the ionic liquid solution of handling by high concentration through the source pump evaporimeter absorbs the heat of transformation that the water in air steam produces.The condenser of source pump such as instance two provide the heating source of ionic liquid solution regeneration, also the domestic hot-water can be provided simultaneously; The cold-producing medium evaporation absorbs the heat of transformation in the evaporimeter of source pump, thereby realizes isothermal dehumidifying, improves the dehumidification rate of system, also cold water can be provided simultaneously.
In diagram, the part refrigerant that the source pump evaporimeter produces is introduced in the air dehumidifier 2 through pipeline, absorb the heat of transformation, keep dehumidification process and under isothermal, carry out, improve the dehumidification rate of system.
Embodiment 5-9:
Wherein adopt two (trifluoromethyl sulfonyl) imines ([BMIM] [(CF of 1-butyl-3-methylimidazole quinoline respectively except dehumidizer
3SO
2)
2N]), 1,3-methylimidazole dimethyl phosphate ([MMIM] [(CH
3)
2PO
4]), 1-butyl-3-methylimidazole diethyl phosphate ([BMIM] [(CH
3)
2PO
4]), 1-ethyl-3-methylimidazole diethyl phosphate ([EMIM] [(CH
3)
2PO
4]), 1-propyl group-3-methyl imidazolium tetrafluoroborate ([C
3MIM] BF
4) the aqueous solution outside, all the other are all with embodiment 1.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. a dehumidizer that is used for air dewetting is characterized in that, said dehumidizer is the fusing point that constitutes of organic cation and inorganic anion near room temperature or is lower than the ionic liquid solution that the water-soluble back of ionic liquid of room temperature forms.
2. dehumidizer as claimed in claim 1; It is characterized in that said organic cation comprises any one in quaternary ammonium cation 、 quaternary phosphine cation, glyoxaline cation, pyridylium, thiazole cation, triazole cation, pyrrolin cation, thiazoline cation, guanidine cation, BTA cation and the derivative thereof.
3. dehumidizer as claimed in claim 1 is characterized in that, said inorganic anion comprises [BF
4]
-, [CF
3SO
3]
-, [CH
3COO]
-, [CF
3COO]
-, [C
3F
7COO]
-, [(CF
3SO
2)
2N]
-, [(CH
3)
2PO
4]
-, [C
3F
7COO]
-, [C
4F
9SO
3]
-, [(C
2F
5SO
2) N]
-[(CF
3SO
2)
3C]
-In any one.
4. like each described dehumidizer of claim 1-3; It is characterized in that; Said ionic liquid comprises 1-butyl-3-methyl imidazolium tetrafluoroborate, 1-ethyl-3-methyl imidazolium tetrafluoroborate, 1; 3-methylimidazole dimethyl phosphate salt, two (trifluoromethyl sulfonyl) imines of 1-ethyl-3-methylimidazole quinoline, two (trifluoromethyl sulfonyl) imines, 1 of 1-butyl-3-methylimidazole quinoline, any one in 3-methylimidazole dimethyl phosphate, 1-butyl-3-methylimidazole diethyl phosphate, 1-ethyl-3-methylimidazole diethyl phosphate and the 1-propyl group-3-methyl imidazolium tetrafluoroborate.
5. an air dehumidification method is characterized in that, adopts each described dehumidizer among the claim 1-4.
6. method as claimed in claim 5 is characterized in that, adopts the ionic liquid solution of high concentration to contact with air, from air, absorbs the ionic liquid solution that moisture becomes low concentration, and air becomes the lower dry air of humidity after dehumidifying; The ionic liquid solution that the ionic liquid solution of said low concentration is regenerated as high concentration after with water evaporates recycles.
7. the air dehumidifier that is used for claim 5 or 6 said methods; It is characterized in that; Comprise air dehumidifier (1), solution pump (3), solution regenerator (2); Connect into a dehumidifying regeneration cycle in proper order by solution line, the dehumidizer of high concentration, said dehumidizer are arranged in the said air dehumidifier (1) is the fusing point that constitutes of organic cation and inorganic anion near room temperature or be lower than the ionic liquid solution that the water-soluble back of ionic liquid of room temperature forms.
8. device as claimed in claim 7 is characterized in that, said air dehumidifier (1) is heat insulation-type dehumidifier or internally cooled dehumidifier.
9. device as claimed in claim 7 is characterized in that, said solution regenerator (2) is that heat supply heat supply network regenerator, heat pump heat supply regenerator, solar regenerator, electrical heating regenerator or waste heat/used heat utilize regenerator.
10. like each described device of claim 7-9, it is characterized in that, between solution regenerator (2) and air dehumidifier (1), also be provided with concentrated solution jar (6).
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