CN105688802A - Iron aluminum phosphate metal-base dehumidifying fin and preparation method thereof - Google Patents

Iron aluminum phosphate metal-base dehumidifying fin and preparation method thereof Download PDF

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Publication number
CN105688802A
CN105688802A CN201610054993.XA CN201610054993A CN105688802A CN 105688802 A CN105688802 A CN 105688802A CN 201610054993 A CN201610054993 A CN 201610054993A CN 105688802 A CN105688802 A CN 105688802A
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fin
aluminium phosphate
iron aluminium
metal substrate
dehumidifying
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王如竹
郑旭
葛天舒
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3408—Regenerating or reactivating of aluminosilicate molecular sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/124—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/088—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal for domestic or space-heating systems

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Geometry (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Gases (AREA)

Abstract

The invention discloses an iron aluminum phosphate metal-base dehumidifying fin, a preparation method thereof, and a dehumidifying heat exchanger produced by using the iron aluminum phosphate metal-base dehumidifying fin. The adsorption performance of the iron aluminum phosphate metal-base dehumidifying fin provided by the invention is obviously improved; the cyclic regeneration of the metal-base dehumidifying fin in a milder condition is realized; further, a coating does not fall off easily, and also does not fracture after absorbing water, and the favorable adsorption performance is maintained.

Description

A kind of iron aluminium phosphate Metal Substrate dehumidifying fin and preparation method thereof
Technical field
The present invention relates to solid dehumidifying air-conditioning technical field, particularly to a kind of iron aluminium phosphate Metal Substrate dehumidifying fin and preparation method thereof。
Background technology
Solid dehumidifying air-conditioning technical is a kind of by adopting the steam in dehumidizer absorbed air, it is achieved the technology that latent heat load and sensible heat load separately process。The application of this technology solves conventional steam compacting air-conditioning system and processes the deficiency of humidity load, but there is other problems too in this technology, such as the heat of adsorption that dehumidizer discharges in dehumidification process, not only increase the follow-up sensible heat load that need to process, and also result in the rising of dehumidizer regeneration temperature。In order to solve the problems referred to above that dehumidifying material runs in dehumidification process, a kind of novel solid dehumidifier/air-conditioning system based on dehumidification heat exchange (dehumidizer is coated to the outer surface of fin-tube type heat exchanger) of report in prior art。But, it is coated with the absorption property of the Metal Substrate fin of dehumidizer and regenerability wet-out property important to dehumidification heat exchange equally。In these three sections of articles, Fieldperformancemeasurementsofaheatpumpdesiccantunitinde humidificationmode [EnergyandBuildings, 2008, 40 (12): 2141-2147], Experimentalinvestigationonadesiccantdehumidificationuni tusingfin-tubeheatexchangerwithsilicagelcoating [AppliedThermalEngineering, 2014, 63 (1): 52-58] and Advancedperformanceofanopendesiccantcyclewithinternaleva porativecooling [SolarEnergy, 2014, 104:103-114] describe a kind of safety non-toxic simultaneously, cheap, the silica gel dehumidizer of hot thing good stability, dehumidizer frequently as solid dehumidifying system, it is widely used in dehumidification heat exchange system。But silica gel dehumidizer mainly has the disadvantage that as the dehumidizer of solid dehumidifying system: one, the adsorbance of steam is little, and adsorption is low；Two, the circular regeneration temperature of dehumidizer is high, it is necessary to 80oMore than C heat-source Cycles regenerates；Three, silica gel particle is easy to fall off, and is easily broken after water suction。
Summary of the invention
The first object of the present invention is to provide a kind of iron aluminium phosphate Metal Substrate dehumidifying fin, to solve drawbacks described above of the prior art。
The preparation method that the second object of the present invention is to provide a kind of iron aluminium phosphate Metal Substrate dehumidifying fin, to solve drawbacks described above of the prior art。
The third object of the present invention is to provide the dehumidification heat exchange that a kind of iron aluminium phosphate Metal Substrate dehumidifying fin produces。
Technical scheme is as follows:
The invention discloses a kind of iron aluminium phosphate Metal Substrate dehumidifying fin, including dehumidizer and Metal Substrate fin, described dehumidizer is arranged at the surface of described Metal Substrate fin, and described dehumidizer is prepared by iron aluminium phosphate and binding agent hydrolyzed solution；Described metal fin is metal aluminum based fin。
The preparation method that the invention also discloses above-mentioned iron aluminium phosphate Metal Substrate dehumidifying fin, it is characterised in that comprise the following steps:
(1) preparation binding agent hydrolyzed solution, is prepared by water, alcohols solvent, binding agent mixing；
(2) regulate the pH value of said hydrolyzed liquid, with the caking ability of controlled hydrolysis liquid, and fully mix the hydrolyzed solution after regulating pH value；
(3) add iron aluminium phosphate, agitated, clean, be again stirring for prepare iron aluminium phosphate-binding agent mixing liquid suspension；
(4) the metal aluminum based fin that alkali of separately learning from else's experience processes, solvent clean is crossed, is dipped in the mixing liquid suspension of above-mentioned iron aluminium phosphate-binding agent；
(5) take out impregnated metal aluminum based fin, put into drying in oven and obtain described iron aluminium phosphate Metal Substrate dehumidifying fin。
Further preferably, in described step (1), binding agent is silane coupler。
Further preferably, in described step (1), the volume fraction of water is 10%-90%；The volume fraction of alcohols solvent is 5%-70%；The volume fraction of binding agent is 5%-20%。
Further preferably, in described step (1), alcohols solvent is at least one in methanol, ethanol, isopropanol。
Further preferably, the hydrolyzed solution pH value=3-6 in described step (2), after adjustment。
Further preferably, in described step (3), the mass fraction of the mixing liquid suspension of iron aluminium phosphate-binding agent is 70%-95%。
Further preferably, described iron aluminium phosphate is FAPO-34, is a kind zeolite molecular sieve, and average pore size is 1.8nm。
Further preferably, in described step (5), drying temperature is 80oC~120oC；Drying time is 2h ~ 12h。
The invention also discloses a kind of dehumidification heat exchange using above-mentioned iron aluminium phosphate Metal Substrate dehumidifying fin to produce。
Compared with prior art, beneficial effects of the present invention is as follows:
The iron aluminium phosphate Metal Substrate dehumidifying fin of the oneth, present invention increases significantly compared to the absorption property of silica gel Metal Substrate dehumidifying fin, reaches about 73%；
The iron aluminium phosphate Metal Substrate dehumidifying fin of the 2nd, present invention can at 40-50oCircular regeneration under the low-temperature heat source of C, it is achieved that Metal Substrate dehumidifying fin circular regeneration under relatively mild condition；
3rd. the iron aluminium phosphate Metal Substrate dehumidifying fin of the present invention is compared to silica gel Metal Substrate dehumidifying fin, coating difficult drop-off, and is not easily broken after water suction, keeps good absorption property。
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously。
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of the iron aluminium phosphate Metal Substrate dehumidifying fin cross section of the present invention。
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further。It should be understood that these embodiments are merely to illustrate the present invention, rather than limit protection scope of the present invention。Those skilled in the art make according to the present invention in actual applications improvement and adjustment, still fall within protection scope of the present invention。
The iron aluminium phosphate (FAPO-34) of the present invention is a kind of novel class zeolite molecular sieve, average pore size is 1.8nm, its molecule cage type framing structure can realize the seizure to steam and absorption, can pass through to change size and the sial ratio of molecule cage type framing structure, it is achieved 40 ~ 50 simultaneouslyoCircular regeneration under the low-temperature heat source of C。Therefore a kind of suitable binding agent hydrolyzed solution can be selected to mix homogeneously with FAPO-34 after, it is coated uniformly on metal aluminum based fin surface, thus preparing, a kind of absorption property is good, circular regeneration performance is good and the iron aluminium phosphate Metal Substrate of difficult drop-off dehumidifying fin, can prepare dehumidification heat exchange further simultaneously。
The method below preparing iron aluminium phosphate Metal Substrate dehumidifying fin for the present invention, specifically comprises the following steps that
(1) prepare the hydrating solution of binding agent, prepare by certain volume ratio water intaking, alcohols solvent, binding agent mix homogeneously respectively；
(2) regulate the pH value of said hydrolyzed liquid, with the caking ability of controlled hydrolysis liquid, and fully mix the hydrolyzed solution after regulating pH value；
(3) iron aluminium phosphate powder is added, agitated, clean, be again stirring for obtaining the mixing liquid suspension of the iron aluminium phosphate-binding agent of certain mass mark；
(4) separately take metal aluminum based fin, its surface is carried out pretreatment: metal aluminum based fin is immersed in aqueous slkali and remove oils and fats, then obtain with water and ethanol purge；
(5) by surface-treated metal aluminum based fin, immerse the mixing liquid suspension of iron aluminium phosphate-binding agent, take out after some minutes；
(6) take out impregnated metal aluminum based fin, put into drying in oven and solidify some hours, obtain described iron aluminium phosphate Metal Substrate dehumidifying fin, and weigh。
Embodiment 1
(1) prepare binding agent hydrating solution, take respectively volume fraction 90% water, 5% ethanol, 5% silylation glue mix homogeneously prepare；
(2) regulating the pH=4 of said hydrolyzed liquid, now the viscosity of hydrolyzed solution is best, and 25oUnder C, magnetic agitation 4h；
(3) appropriate iron aluminium phosphate powder is added, agitated, clean, be again stirring for obtaining the mixing liquid suspension that mass fraction is 95% iron aluminium phosphate-silylation glue；
(4) separately take metal aluminum based fin, its surface is carried out pretreatment: metal aluminum based fin is immersed in 0.1mol/L sodium hydroxide solution and remove oils and fats, then obtain with water and ethanol purge；
(5) by surface-treated metal aluminum based fin, immerse the mixing liquid suspension of iron aluminium phosphate-binding agent, take out after some minutes；
(6) 120oC drying in oven is taken out and weighs after solidifying 4h hour, and calculating the surface-coated density obtaining dehumidifying print is 0.3kg/m2。
The iron aluminium phosphate Metal Substrate dehumidifying fin performance test of preparation in the present embodiment includes following items:
(1) microstructure detection
FAPO-34 Metal Substrate dehumidifying fin coating and the specific surface area of FAPO-34 powder, pore volume and average surface area micro-property parameter are tested by ASAP2020 physical adsorption appearance。Wherein, the specific surface area of FAPO-34 powder and pore volume are 183m2/ g and 0.08cm3/ g；The parameter of FAPO-34 Metal Substrate dehumidifying fin coating is the dehumidifying material unit Mass Calculation (not including Metal Substrate aluminum fin-stock quality) being coated in Metal Substrate fin。
The iron aluminium phosphate Metal Substrate dehumidifying fin of embodiment 1 preparation is carried out microstructure detection and calculates: specific surface area and the pore volume relatively FAPO-34 powder of FAPO-34 Metal Substrate dehumidifying fin coating reduce 13% and 25% respectively；The average pore size relatively FAPO-34 powder of FAPO-34 Metal Substrate dehumidifying fin coating is compared without significant change。
(2) absorption property detection
Climatic chamber is set in a certain operating mode, and FAPO-34 Metal Substrate dehumidifying fin and FAPO-34 powder are put into climatic chamber and are carried out absorption property test experience, and measure in real time with scales/electronic balance weighing。Due to rate of adsorption prolongation over time, its absorption property is also gradually lowered therewith, therefore by initial 5min, the interval weighed can be gradually become 10min and 20min。It is spaced apart 20min, when change is less than 5% relatively of double institute on measured weight, it is believed that adsorption-desorption reaches balance when the time。Wherein, it is 20 in temperatureoC, humidity is 70% time, and the saturated extent of adsorption of FAPO-34 powder is 0.211g/g。
Under same above-mentioned test condition, the iron aluminium phosphate Metal Substrate dehumidifying fin of embodiment 1 preparation is carried out absorption property detection and calculates: the saturated extent of adsorption relatively FAPO-34 powder of the FAPO-34 Metal Substrate dehumidifying fin of unit mass decreases 8%；The adsorbance relatively Metal Substrate silica gel dehumidifying fin of the FAPO-34 Metal Substrate dehumidifying fin of unit mass exceeds 73%；The adsorbing filament technique relatively FAPO-34 powder of FAPO-34 Metal Substrate dehumidizer fin improves 37%。
Therefore, the iron aluminium phosphate Metal Substrate dehumidifying fin of the present embodiment 1 preparation being carried out above-mentioned performance test, acquired results is (a) microstructure detection: specific surface area and the pore volume of Metal Substrate dehumidifying fin coating are 159m2/ g and 0.06cm3/ g；B () absorption property detects: be 20 in temperatureoC, humidity is 70% time, and the saturated extent of adsorption of the FAPO-34 Metal Substrate dehumidifying fin of unit mass is 0.194g/g。
Embodiment 2
(1) prepare binding agent hydrating solution, take respectively volume fraction 10% water, 70% ethanol, 20% silylation glue mix homogeneously prepare；
(2) pH=5 of said hydrolyzed liquid is regulated, and 25oUnder C, magnetic agitation 4h；
(3) appropriate iron aluminium phosphate powder is added, agitated, clean, be again stirring for obtaining the mixing liquid suspension that mass fraction is 80% iron aluminium phosphate-silylation glue；
(4) separately take metal aluminum based fin, its surface is carried out pretreatment: metal aluminum based fin is immersed in 0.1mol/L sodium hydroxide solution and remove oils and fats, then obtain with water and ethanol purge；
(5) by surface-treated metal aluminum based fin, immerse the mixing liquid suspension of iron aluminium phosphate-binding agent, take out after some minutes；
(6) 120oC drying in oven is taken out and weighs after solidifying 4h hour, and calculating the surface-coated density obtaining dehumidifying print is 0.24kg/m2。
(7) the iron aluminium phosphate Metal Substrate dehumidifying fin performance test to preparation, (a) microstructure detects: specific surface area and the pore volume of Metal Substrate dehumidifying fin coating are 134m2/ g and 0.05cm3/ g,；B () absorption property detects: be 20 in temperatureoC, humidity is 70% time, and the saturated extent of adsorption of the FAPO-34 Metal Substrate dehumidifying fin of unit mass is 0.146g/g。
Embodiment 3
(1) prepare binding agent hydrating solution, take respectively volume fraction 50% water, 40% ethanol, 10% silylation glue mix homogeneously prepare；
(2) regulating the pH=4 of said hydrolyzed liquid, now the viscosity of hydrolyzed solution is best, and 25oUnder C, magnetic agitation 4h；
(3) appropriate iron aluminium phosphate powder is added, agitated, clean, be again stirring for obtaining the mixing liquid suspension that mass fraction is 90% iron aluminium phosphate-silylation glue；
(4) separately take metal aluminum based fin, its surface is carried out pretreatment: metal aluminum based fin is immersed in 0.1mol/L sodium hydroxide solution and remove oils and fats, then obtain with water and ethanol purge；
(5) by surface-treated metal aluminum based fin, immerse the mixing liquid suspension of iron aluminium phosphate-binding agent, take out after some minutes；
(6) 120oC drying in oven is taken out and weighs after solidifying 4h hour, and calculating the surface-coated density obtaining dehumidifying print is 0.28kg/m2。
(7) the iron aluminium phosphate Metal Substrate dehumidifying fin performance test to preparation, (a) microstructure detects: specific surface area and the pore volume of Metal Substrate dehumidifying fin coating are 151m2/ g and 0.06cm3/ g,；B () absorption property detects: be 20 in temperatureoC, humidity is 70% time, and the saturated extent of adsorption of the FAPO-34 Metal Substrate dehumidifying fin of unit mass is 0.173g/g。
Above-described embodiment proves, present invention achieves and has the beneficial effect that:
The iron aluminium phosphate Metal Substrate dehumidifying fin of the oneth, present invention increases significantly compared to the absorption property of silica gel Metal Substrate dehumidifying fin, reaches about 73%；
The iron aluminium phosphate Metal Substrate dehumidifying fin of the 2nd, present invention can at 40-50oCircular regeneration under the low-temperature heat source of C, it is achieved that Metal Substrate dehumidifying fin circular regeneration under relatively mild condition；
3rd. the iron aluminium phosphate Metal Substrate dehumidifying fin of the present invention is compared to silica gel Metal Substrate dehumidifying fin, coating difficult drop-off, and is not easily broken after water suction, keeps good absorption property。
Present invention disclosed above preferred embodiment is only intended to help to set forth the present invention。Preferred embodiment does not have all of details of detailed descriptionthe, is not intended to the detailed description of the invention that this invention is only described yet。Obviously, the content according to this specification, can make many modifications and variations。These embodiments are chosen and specifically described to this specification, is to explain principles of the invention and practical application better, so that skilled artisan can be best understood by and utilize the present invention。The present invention is limited only by the restriction of claims and four corner thereof and equivalent。

Claims (10)

1. an iron aluminium phosphate Metal Substrate dehumidifying fin, including dehumidizer and Metal Substrate fin, it is characterised in that described dehumidizer is arranged at the surface of described Metal Substrate fin, described dehumidizer is prepared by iron aluminium phosphate and binding agent hydrolyzed solution；Described metal fin is metal aluminum based fin。
2. the preparation method of the iron aluminium phosphate Metal Substrate dehumidifying fin described in a claim 1, it is characterised in that comprise the following steps:
Preparation binding agent hydrolyzed solution, is prepared by water, alcohols solvent, binding agent mixing；
Regulate the pH value of said hydrolyzed liquid, with the caking ability of controlled hydrolysis liquid, and fully mix the hydrolyzed solution after regulating pH value；
Add iron aluminium phosphate, agitated, clean, be again stirring for prepare iron aluminium phosphate-binding agent mixing liquid suspension；
The metal aluminum based fin that alkali of separately learning from else's experience processes, solvent clean is crossed, is dipped in the mixing liquid suspension of above-mentioned iron aluminium phosphate-binding agent；
Take out impregnated metal aluminum based fin, put into drying in oven and obtain described iron aluminium phosphate Metal Substrate dehumidifying fin。
3. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that in described step (1), binding agent is silane coupler。
4. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that in described step (1), the volume fraction of water is 10%-90%；The volume fraction of alcohols solvent is 5%-70%；The volume fraction of binding agent is 5%-20%。
5. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that in described step (1), alcohols solvent is at least one in methanol, ethanol, isopropanol。
6. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that the hydrolyzed solution pH value=3-6 in described step (2), after adjustment。
7. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that in described step (3), the mass fraction of the mixing liquid suspension of iron aluminium phosphate-binding agent is 70%-95%。
8. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that described iron aluminium phosphate is FAPO-34, is a kind zeolite molecular sieve, and average pore size is 1.8nm。
9. the preparation method of iron aluminium phosphate Metal Substrate according to claim 2 dehumidifying fin, it is characterised in that in described step (5), drying temperature is 80oC~120oC；Drying time is 2h ~ 12h。
10. the dehumidification heat exchange that the iron aluminium phosphate Metal Substrate dehumidifying fin that a kind uses described in claim 1 produces。
CN201610054993.XA 2016-01-27 2016-01-27 Iron aluminum phosphate metal-base dehumidifying fin and preparation method thereof Pending CN105688802A (en)

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CN108917450A (en) * 2018-05-14 2018-11-30 海信（山东）空调有限公司 A kind of preparation method of electrospun fibers composite fin
CN109827460B (en) * 2019-01-24 2020-12-22 浙江理工大学 Nano silver powder doped zeolite molecular sieve composite dehumidifying heat exchanger and preparation method thereof

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CN104971687A (en) * 2015-07-20 2015-10-14 北京宝鸿锐科环境科技有限公司 Efficient compound iron-based phosphorous-removing adsorbent as well as preparation method, application method and regeneration method thereof

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