CN105749752A - Photo-thermal type solar membrane distillation device adopting heat pump - Google Patents
Photo-thermal type solar membrane distillation device adopting heat pump Download PDFInfo
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- CN105749752A CN105749752A CN201610167953.6A CN201610167953A CN105749752A CN 105749752 A CN105749752 A CN 105749752A CN 201610167953 A CN201610167953 A CN 201610167953A CN 105749752 A CN105749752 A CN 105749752A
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- heat pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/366—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/087—Single membrane modules
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a photo-thermal type solar membrane distillation device adopting a heat pump. The device comprises a solar thermal collector, a membrane distillation assembly, an auxiliary cooler, a cooler, a compressor, a throttle valve, a heater, a condensate water pump and a feed liquid pump, wherein the solar thermal collector, a feed liquid side of the membrane distillation assembly, a feed liquid side of the heater and the feed liquid pump are connected through pipelines to constitute a feed liquid circulation loop; the condensate water side of the membrane distillation assembly, a condensate water side of the auxiliary cooler, a condensate water side of the cooler and the condensate water pump are connected through pipelines to constitute a condensate water circulation loop; the compressor, a working medium side of the heater, the throttle valve and a working medium side of the cooler are sequentially connected through pipelines to constitute the heat pump, and the heat pump is filled with circulating working media. The energy consumption cost for feed liquid treatment is low, and the feed liquid treatment speed cannot be limited by intensity of sunlight.
Description
Technical field
The present invention relates to a kind of producing or the distillation device of biochemical feed liquid concentration for wastewater treatment, pure water, particularly to a kind of solar heat pump distillation device.
Background technology
Membrane Materials be based on hydrophobic perforated film allow water vapour by and the characteristic that do not allow aqueous water to pass through, the technology that moisture in the feed liquid form water with solute separates with other composition, can be used for the concentration of the feed liquid of the industries such as chemical industry, environmental protection, food, biology, pharmacy, pure water is produced, the occasion such as wastewater treatment, has and can process middle and high concentration feed liquid, can carry out the feature such as cryoconcentration or separation at ambient pressure.
During membrane component work, feed liquid side needs to continually enter heat energy makes moisture vaporization in the feed liquid of film surface, and condensed water side then needs to continually enter cold energy to be made to wear the water recovery that film comes；Cold energy needed for condensed water side can be provided as low-temperature receiver by surrounding air, and the heat generating temperature needed for feed liquid side is generally 45～95 DEG C, and suitable measure need to be adopted to provide.
Utilizing solar energy heating technology is a good solution route to the heat energy needed for providing membrane component, but solar energy is affected bigger by weather, when solar irradiation is more weak, the heat that solar energy supplies tends not to meet the requirement of feed liquid processing speed, for this, it is necessary to consider other auxiliary thermal source.
Heat pump is to consume a small amount of electric energy can produce the device of many times of heat energy and cold energy simultaneously, not only can provide heat energy for the feed liquid side of membrane component, also can provide cold energy, preferably auxiliary device when being solar illuminating deficiency for the condensed water side of membrane component.
Summary of the invention
It is an object of the invention to be undertaken integrated by solar energy heating, heat pump and Membrane Materials, it is provided that the photo-thermal type solar heat pump distillation device that a kind of good operation stability, energy consumption cost are low.
The photo-thermal type solar heat pump distillation device of present invention design, including solar thermal collector, membrane component, auxiliary cooler, cooler, compressor, choke valve, heater, condensate pump and feed pump, solar thermal collector, the feed liquid side of membrane component, the feed liquid side of heater and feed pump connect and compose feed liquid closed circuit by pipeline；Condensate water circulatory loop is connected and composed by pipeline by the condensed water side of membrane component, the condensed water side of auxiliary cooler, the condensed water side of cooler and condensate pump；It is sequentially connected with by pipeline by the working medium side of compressor, the working medium side of heater, choke valve and cooler and constitutes heat pump, in heat pump, be filled with cycle fluid.
The cycle fluid filled in described heat pump is pure cold-producing medium or mix refrigerant.
Described solar thermal collector is flat-plate collector or vacuum tube type heat collector.
The described membrane material in membrane component is hydrophobic membrane materials.
The invention has the beneficial effects as follows: when solar irradiation is stronger, solar thermal collector the heat energy provided fully meets membrane component job requirement, hot air pump inoperative；When solar irradiation is more weak, when cannot meet required feed liquid processing speed, heat pump participates in running, a small amount of electric energy of compressor consumption in heat pump.So, no matter solar irradiation is strong and weak, all can ensure required feed liquid processing speed, and during heat pump back work, the electric energy of consumption is also little, and energy consumption cost is relatively low.
Accompanying drawing explanation
Accompanying drawing is the structural principle schematic diagram of the present invention；
In figure:
1 is that heater 2 exports 4 for choke valve for feed pump 3 for dope
5 is auxiliary cooler for condensate pump 7 for cooler 8 for compressor 6
9 be condensation-water drain 10 is material liquid import for membrane component 11
12 is solar thermal collector
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Photo-thermal type solar heat pump distillation device as shown in drawings, including solar thermal collector 12, membrane component 10, auxiliary cooler 8, cooler 7, compressor 5, choke valve 4, heater 1, condensate pump 6 and feed pump 2；Feed liquid closed circuit is connected and composed by pipeline by solar thermal collector 12, the feed liquid side of membrane component 10, the feed liquid side of heater 1 and feed pump 2；Condensate water circulatory loop is connected and composed by pipeline by the condensed water side of membrane component 10, the condensed water side of auxiliary cooler 8, the condensed water side of cooler 7 and condensate pump 6；Being sequentially connected with by pipeline by the working medium side of compressor 5, the working medium side of heater 1, choke valve 4 and cooler 7 and constitute heat pump, be filled with cycle fluid in heat pump, cycle fluid is pure cold-producing medium or mix refrigerant.Solar thermal collector 12 is flat-plate collector or vacuum tube type heat collector；By membrane material, feed liquid and condensed water being separated in membrane component 10, membrane material is hydrophobic membrane materials, concretely polypropylene, politef or polyvinylidene fluoride film, it is possible to for inoranic membrane；Auxiliary cooler 8 can be fin tube type air heat exchanger, is condensed water in pipe, and pipe is outer is surrounding air；Cooler 7 can be shell and tube exchanger, and pipe is outer is condensed water, is the heat pump cycle working medium that temperature is low in pipe；Compressor 5 is that the hermetic compressor that compressor is coaxial with variable frequency, AC motor, rotating speed and power can step-less adjustment within the specific limits；Choke valve 4 can be electric expansion valve, and through-flow diameter can step-less adjustment within the specific limits；Heater 1 can be shell and tube exchanger, and pipe is outer is feed liquid, is the heat pump cycle working medium that temperature is high in pipe；Condensate pump 6 can be centrifugal pump, and impeller is copper material；Feed pump 2 can be centrifugal pump, and impeller is stainless steel；On the pipeline that condensation-water drain 9 is arranged in condensate water circulatory loop between membrane component 10 and auxiliary cooler 8；On the pipeline that material liquid import 11 is arranged in feed liquid closed circuit between membrane component 10 and solar thermal collector 12；On the pipeline that dope outlet 3 is arranged in feed liquid closed circuit between membrane component 10 and feed pump 2.
In the present embodiment, the canonical parameter of critical piece is as follows:
Solar thermal collector 12: flat type solar heat collector, collector area 5m2。
Membrane component 10: plate direct contact membrane distillation assembly, membrane material is Kynoar, fenestra average diameter 0.22 μm, porosity 80%, thickness 0.15mm, membrane area 1.5m2。
Auxiliary cooler 8: fin tube type air heat exchanger, air side heat exchange area 8m2。
Cooler 7: shell and tube exchanger, heat pump cycle working medium is walked in pipe, and condensed water is walked outside pipe, condensed water side heat exchange area 0.9m2。
Condensate pump 6: impeller is the centrifugal pump of copper material, lift 9m, metered flow 0.9m3/ h, rated power 90W.
Compressor 5: reciprocating piston type hermetic compressor, rated voltage 380V, rated power 700W, variable frequency range 10～60Hz.
Choke valve 4: electric expansion valve, through-flow diameter 0～3mm.
Feed pump 2: impeller is the centrifugal pump of stainless steel, lift 10m, metered flow 0.9m3/ h, rated power 100W.
Heater 1: shell and tube exchanger, heat pump cycle working medium is walked in pipe, and feed liquid is walked outside pipe, feed liquid side heat exchange area 1.0m2。
The work process of the present embodiment is:
When heat when solar irradiation is relatively strong, collected by solar thermal collector 12 meets required feed liquid processing speed, compressor 5 does not start, and heat pump cycle loop is not run.Now, feed pump 2 drives feed liquid to flow in feed liquid closed circuit, and condensate pump 6 drives condensed water to flow in condensate water circulatory loop；Feed liquid is higher through solar thermal collector 12 temperature after heating, and condensed water temperature after the surrounding air outside auxiliary cooler 8 cools down is relatively low；The water vapor pressure that moisture in the feed liquid that in membrane component 10, temperature is higher produces in film surface is higher, and water vapour arrives condensed water side through fenestra, wears the water vapour that film comes and is condensed into condensed water at condensed water film surface place；Along with water vapour wears the carrying out of membrane process, in feed liquid, water content reduces, and solute concentration increases, and the condensation water quantity of condensed water side increases；When the solute concentration of feed liquid side is increased to certain value, exporting 3 discharge concentrated solutions from dope, fill into new feed liquid from material liquid import 11, meanwhile, the condensed water of condensed water side is also discharged by condensation-water drain 9 in time.
Typical operating parameters when only being provided heat, heat pump cycle loop not to work by solar thermal collector 12 for membrane component 10 is as follows.
Material liquid: mass concentration is the sodium-chloride water solution of 3%.
Product: pure water (condensed water).
Ambient air temperature: 25 DEG C.
Feed temperature in membrane component 10: 55 DEG C, condensate temperature: 35 DEG C.
Produce water speed: 2.5kg/h, condensed water electrical conductivity: 13 μ s/cm.
When night or sleet sky need again to process without solar irradiation, feed liquid, then individually membrane component 10 is provided to work required heat by heat pump.Now, feed liquid closed circuit, condensate water circulatory loop and heat pump cycle loop are all run.Heat pump cycle working medium is by compressor 5 boil down to high temperature and high pressure gas state, enter in the pipe of heater 1, add the feed liquid outside heat pipe, the heat release in the pipe of heater 1 of heat pump cycle working medium condenses, become middle temperature highly pressurised liquid state, the heat pump cycle working medium of middle temperature highly pressurised liquid state is after choke valve 4 decompressional expansion flash distillation, heat pump cycle working medium becomes the temperature Low temperature low pressure liquid state lower than condensate temperature, the heat pump cycle working medium of Low temperature low pressure liquid state enters in the pipe of cooler 7, condensed water outside cooling tube, the heat pump cycle working medium of low-temp low-pressure is absorbed heat evaporation in the pipe of cooler 7, become low temperature low pressure gas state, enter back into compressor 5 and start next circulation；Along with heat pump cycle working medium constantly heats feed liquid by heater 1, by cooler 7 cooling condensation water, and feed liquid flows in feed liquid closed circuit and condensed water flows in condensate water circulatory loop, feed temperature in membrane component 10 raises, condensate temperature reduces, moisture in feed liquid is with water vapour form through membrane material, and feed liquid is constantly concentrated, and condensed water is continuously increased.
Individually by heat pump provide membrane component 10 work required heat time, typical operating parameters is as follows.
Material liquid: mass concentration is the sodium-chloride water solution of 3%.
Product: pure water (condensed water).
Compressor 5 runs power: 680W.
Feed temperature in membrane component 8: 48 DEG C, condensate temperature: 22 DEG C.
Produce water speed: 2.3kg/h, condensed water electrical conductivity: 12 μ s/cm.
When have solar irradiation but more weak, required feed liquid processing speed cannot be met time, need heat pump and solar thermal collector 12 to combine offer membrane component 10 and work required heat.Now, feed liquid closed circuit, condensate water circulatory loop and heat pump cycle loop are all run, solar thermal collector 12 and heater 1 heat the feed liquid in feed liquid closed circuit jointly, condensed water in auxiliary cooler 8 and the common cooling condensation water-flow circuit of cooler 7, and meet required feed liquid processing speed by regulating the power of compressor 5.
When heat pump and solar thermal collector 12 associated working, typical operating parameters is as follows.
Material liquid: mass concentration is the sodium-chloride water solution of 3%.
Product: pure water (condensed water).
Ambient air temperature: 25 DEG C.
Compressor 5 runs power: 280W.
Feed temperature in membrane component 10: 50 DEG C, condensate temperature: 28 DEG C.
Produce water speed: 2.3kg/h, condensed water electrical conductivity: 12 μ s/cm.
Claims (4)
1. a photo-thermal type solar heat pump distillation device, including solar thermal collector (12), membrane component (10), auxiliary cooler (8), cooler (7), compressor (5), choke valve (4), heater (1), condensate pump (6) and feed pump (2), it is characterized in that, solar thermal collector (12), the feed liquid side of membrane component (10), the feed liquid side of heater (1) and feed pump (2) connect and compose feed liquid closed circuit by pipeline；Condensate water circulatory loop is connected and composed by pipeline by the condensed water side of membrane component (10), the condensed water side of auxiliary cooler (8), the condensed water side of cooler (7) and condensate pump (6)；It is sequentially connected with by pipeline by the working medium side of compressor (5), the working medium side of heater (1), choke valve (4) and cooler (7) and constitutes heat pump, in heat pump, be filled with cycle fluid.
2. photo-thermal type solar heat pump distillation device as claimed in claim 1, it is characterised in that the cycle fluid filled in heat pump is pure cold-producing medium or mix refrigerant.
3. photo-thermal type solar heat pump distillation device as claimed in claim 1, it is characterised in that solar thermal collector (12) is flat-plate collector or vacuum tube type heat collector.
4. photo-thermal type solar heat pump distillation device as claimed in claim 1, it is characterised in that the membrane material in membrane component (10) is hydrophobic membrane materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167953.6A CN105749752A (en) | 2016-03-17 | 2016-03-17 | Photo-thermal type solar membrane distillation device adopting heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167953.6A CN105749752A (en) | 2016-03-17 | 2016-03-17 | Photo-thermal type solar membrane distillation device adopting heat pump |
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| CN105749752A true CN105749752A (en) | 2016-07-13 |
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| CN201610167953.6A Pending CN105749752A (en) | 2016-03-17 | 2016-03-17 | Photo-thermal type solar membrane distillation device adopting heat pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651727A (en) * | 2017-10-19 | 2018-02-02 | 南京航空航天大学 | Double-effect heat pump film steam sewage disposal system and method |
| TWI635052B (en) * | 2017-03-06 | 2018-09-11 | 葉忠福 | Independent thin film distillation unit |
| CN112090284A (en) * | 2020-09-18 | 2020-12-18 | 中国人民解放军海军勤务学院 | Membrane distillation industrial wastewater concentration method based on compression heat pump |
| KR102215050B1 (en) * | 2019-09-16 | 2021-02-10 | 한국과학기술연구원 | Apparatus for membrane distillation using solar absorber and heat pump |
| CN112919565A (en) * | 2021-01-29 | 2021-06-08 | 山东大学 | Solar energy-hot spring-heat pump coupling multistage membrane distillation water treatment system and method |
| CN113713617A (en) * | 2021-08-31 | 2021-11-30 | 温州大学 | Solar energy coupling MVR vacuum membrane distillation concentrated sulfuric acid solution system and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI635052B (en) * | 2017-03-06 | 2018-09-11 | 葉忠福 | Independent thin film distillation unit |
| CN107651727A (en) * | 2017-10-19 | 2018-02-02 | 南京航空航天大学 | Double-effect heat pump film steam sewage disposal system and method |
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| CN112090284A (en) * | 2020-09-18 | 2020-12-18 | 中国人民解放军海军勤务学院 | Membrane distillation industrial wastewater concentration method based on compression heat pump |
| CN112919565A (en) * | 2021-01-29 | 2021-06-08 | 山东大学 | Solar energy-hot spring-heat pump coupling multistage membrane distillation water treatment system and method |
| CN113713617A (en) * | 2021-08-31 | 2021-11-30 | 温州大学 | Solar energy coupling MVR vacuum membrane distillation concentrated sulfuric acid solution system and method |
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