CN113526601A - Seawater desalination system based on runner deep dehumidification - Google Patents
Seawater desalination system based on runner deep dehumidification Download PDFInfo
- Publication number
- CN113526601A CN113526601A CN202110748333.2A CN202110748333A CN113526601A CN 113526601 A CN113526601 A CN 113526601A CN 202110748333 A CN202110748333 A CN 202110748333A CN 113526601 A CN113526601 A CN 113526601A
- Authority
- CN
- China
- Prior art keywords
- inlet
- outlet
- seawater
- air
- dehumidification
- 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.)
- Pending
Links
- 239000013535 sea water Substances 0.000 title claims abstract description 178
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 59
- 238000007791 dehumidification Methods 0.000 title claims abstract description 57
- 238000007710 freezing Methods 0.000 claims abstract description 102
- 230000008014 freezing Effects 0.000 claims abstract description 102
- 238000001704 evaporation Methods 0.000 claims abstract description 90
- 230000008020 evaporation Effects 0.000 claims abstract description 88
- 239000013505 freshwater Substances 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 239000013078 crystal Substances 0.000 claims description 54
- 238000002844 melting Methods 0.000 claims description 38
- 239000012267 brine Substances 0.000 claims description 35
- 230000008018 melting Effects 0.000 claims description 35
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 34
- 239000003507 refrigerant Substances 0.000 claims description 31
- 239000002274 desiccant Substances 0.000 claims description 19
- 230000008929 regeneration Effects 0.000 claims description 17
- 238000011069 regeneration method Methods 0.000 claims description 17
- 239000000110 cooling liquid Substances 0.000 claims description 10
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 23
- 238000009834 vaporization Methods 0.000 abstract description 8
- 230000008016 vaporization Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 131
- 239000003570 air Substances 0.000 description 121
- 230000006872 improvement Effects 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- 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
- C02F1/043—Details
-
- 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
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- 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
- Y02A20/124—Water desalination
-
- 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
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a seawater desalination system based on deep dehumidification of a rotating wheel, which comprises a seawater precooling device, an air dehumidification precooling device and a seawater evaporation freezing desalination device; the seawater evaporation freezing desalination device comprises an evaporation freezing chamber, a solid-liquid separator, a de-icing device and a fresh water tank which are connected in sequence; a distributor is arranged at a seawater inlet of the evaporation freezing chamber; the air dehumidifying and pre-cooling device comprises a first fan, a dehumidifying rotating wheel, a second fan, a pre-cooling mechanism, a third fan and a pre-heating mechanism. Compared with a vacuum freezing method, the seawater desalination system does not need to consume a large amount of energy to vacuumize the evaporation chamber. The problem that the taste of the fresh water is poor due to the fact that the ice making volume is large in the freezing method seawater desalination process and a large number of salt cells exist in the made ice blocks is solved, meanwhile, the stability of the system in the freezing method seawater desalination process is greatly improved, and the cold quantity generated outside and needed by freezing is greatly reduced through the cold quantity brought by self vaporization.
Description
Technical Field
The invention belongs to the technical field of seawater desalination, and particularly relates to a seawater desalination system based on rotary wheel deep dehumidification.
Background
The fresh water resources in China are less, and with the rapid development of social economy, the fresh water pollution is serious, and the contradiction between water resource supply and demand in China is further aggravated. China has abundant ocean resources, further promotes the development of the seawater desalination industry, and is an effective means for solving the shortage of water resources in China.
Seawater desalination has been developed for years, and various mature technologies exist, but all have disadvantages. The sea water desalination by the freezing method is a hot point of research in the industry, the melting heat of water used by the freezing method is 1/7 of the vaporization heat of water, and compared with the distillation method, the freezing method greatly saves energy, but ice blocks prepared in the sea water desalination process by the freezing method are large, salt cells inevitably exist in the ice blocks, and the prepared fresh water has poor taste. The vacuum freezing method for sea water desalination is based on the three-phase point principle of water, and near the three-phase point of water, three phases of vapour, liquid and solid coexist, if the sea water is controlled near the three-phase point, the evaporation and icing of sea water can be simultaneously implemented, and the vacuum freezing method utilizes the principle to atomize and spray the sea water in a vacuum evaporation chamber, and the sea water drops are formed into ice crystals, and then the ice crystals are washed, separated and melted to obtain fresh water.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the seawater desalination system based on the rotary wheel deep dehumidification is provided, the evaporation and the freezing of seawater are realized by using the air with low moisture content, and huge energy consumption caused by vacuumizing is avoided.
In order to solve the technical problem, an embodiment of the invention provides a seawater desalination system based on rotary wheel deep dehumidification, which comprises a seawater precooling device, an air dehumidification precooling device and a seawater evaporation freezing desalination device; the seawater evaporation freezing desalination device comprises an evaporation freezing chamber, a solid-liquid separator, a de-icing device and a fresh water tank, wherein the evaporation freezing chamber is provided with a seawater inlet, an air inlet, an ice crystal brine outlet and an air outlet, the solid-liquid separator is provided with an ice crystal brine inlet and an ice crystal outlet, the de-icing device is provided with an ice crystal inlet and a fresh water outlet, and the fresh water tank is provided with a fresh water inlet; a distributor is arranged at a seawater inlet of the evaporation freezing chamber; the air dehumidifying and pre-cooling device comprises a first fan, a dehumidifying rotating wheel with a dehumidifying area inlet, a dehumidifying area outlet and a regenerating area inlet, a second fan, a pre-cooling mechanism, a third fan and a preheating mechanism;
the seawater precooling device is connected with a seawater inlet of the evaporation freezing chamber, and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber; an ice crystal brine outlet of the evaporation freezing chamber is connected with an ice crystal brine inlet of a solid-liquid separator, an ice crystal outlet of the solid-liquid separator is connected with an ice crystal inlet of a de-icing device, and a fresh water outlet of the de-icing device is connected with an inlet of a fresh water tank;
an air outlet of the evaporation freezing chamber is connected with an inlet of a first fan, an outlet of the first fan is connected with an inlet of a dehumidification region of the dehumidification rotating wheel, an outlet of the dehumidification region of the dehumidification rotating wheel is connected with an inlet of a second fan, an outlet of the second fan is connected with an inlet of a precooling mechanism, and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber; and the outlet of the third fan is connected with the inlet of the preheating mechanism, and the outlet of the preheating mechanism is connected with the inlet of the regeneration area of the dehumidifying rotating wheel.
As a further improvement of the embodiment of the present invention, the seawater precooling apparatus includes a first evaporator having a seawater inlet and a seawater outlet, and a first cooler having a seawater inlet and a seawater outlet, the seawater outlet of the first evaporator being connected to the seawater inlet of the first cooler, and the seawater outlet of the first cooler being connected to the seawater inlet of the evaporative freezing chamber.
As a further improvement of the embodiment of the invention, the ice melting device is also provided with a seawater pipeline inlet and a seawater pipeline outlet, the seawater pipeline outlet of the first cooler is connected with the seawater pipeline inlet of the ice melting device, and the seawater pipeline outlet of the ice melting device is connected with the seawater inlet of the evaporation freezing chamber.
As a further improvement of the embodiment of the present invention, the pre-cooling mechanism includes a second evaporator having an air inlet and an air outlet, and a second cooler having an air duct inlet and an air duct outlet, the outlet of the second fan is connected to the air inlet of the second evaporator, the air outlet of the second evaporator is connected to the air duct inlet of the second cooler, and the air duct outlet of the second cooler is connected to the air inlet of the evaporation freezing chamber.
As a further improvement of the embodiment of the invention, the ice melting device is also provided with an air pipeline inlet and an air pipeline outlet, the air pipeline outlet of the second cooler is connected with the air pipeline inlet of the ice melting device, and the air pipeline outlet of the ice melting device is connected with the air inlet of the evaporation freezing chamber.
As a further improvement of the embodiment of the present invention, the present invention further comprises a heat pump device, wherein the heat pump device comprises a compressor and a condenser; the first evaporator and the second evaporator each have a refrigerant inlet and a refrigerant outlet; the outlet of the compressor is connected with the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is respectively connected with the refrigerant inlet of the first evaporator and the refrigerant inlet of the second evaporator, and the refrigerant outlet of the first evaporator and the refrigerant outlet of the second evaporator are both connected with the inlet of the compressor.
As a further improvement of the embodiment of the present invention, the condenser further has an air inlet and an air outlet, and the air outlet of the condenser is connected to the inlet of the third blower.
As a further improvement of the embodiment of the invention, the evaporator-freezer further comprises a strong brine water collector, the evaporator-freezer and the solid-liquid separator are respectively provided with a strong brine outlet, and the first cooler and the second cooler are respectively provided with a cooling liquid inlet and a cooling liquid outlet; the strong brine export of evaporation freezing room and solid-liquid separator's strong brine export all with the entry linkage of strong brine water collector, the export of strong brine water collector and the coolant liquid entry linkage of first cooler, the coolant liquid export of first cooler and the coolant liquid entry linkage of second cooler.
As a further improvement of the embodiment of the invention, the solid-liquid separator is also provided with a fresh water inlet, and a distributor is arranged at the fresh water inlet of the solid-liquid separator; and the outlet of the fresh water tank is connected with the fresh water inlet of the solid-liquid separator.
As a further improvement of the embodiment of the present invention, the preheating mechanism includes a solar heat collector and an electric heater, an outlet of the third fan is connected to an air inlet of the solar heat collector, an air outlet of the solar heat collector is connected to an air inlet of the electric heater, and an air outlet of the electric heater is connected to an inlet of a regeneration area of the desiccant rotor.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: according to the seawater desalination system based on the rotary wheel deep dehumidification, provided by the embodiment of the invention, seawater is precooled by a seawater precooling device and then is sent into an evaporation freezing chamber, and is atomized into water drops; meanwhile, the air dehumidification precooling device precools the low-moisture-content air dehumidified by the dehumidification rotating wheel and then sends the air into the evaporation freezing chamber, so that seawater water drops can be quickly evaporated in the low-temperature low-moisture-content air, latent heat of vaporization absorbed by the evaporation of the seawater water drops is quickly formed into ice crystals, and meanwhile, salt in the water drops is extruded to the surfaces of the ice crystals to obtain a mixture of the ice crystals and strong brine; and separating the solid-liquid separator to obtain ice crystals, feeding the ice crystals into the ice melting device, melting the ice crystals, and feeding the ice crystals into the fresh water tank. According to the seawater desalination system provided by the embodiment of the invention, the dehumidification rotating wheel is used for preparing the dry air with the water vapor partial pressure lower than the three-phase pressure, the energy-saving means of rotating wheel dehumidification is adopted to obtain the environment with low water vapor partial pressure, the seawater evaporation and icing are simultaneously and spontaneously carried out, and the seawater desalination is finally realized. Compared with a vacuum freezing method, the evaporation chamber is vacuumized without consuming a large amount of energy. The problem that the taste of the fresh water is poor due to the fact that the ice making volume is large in the freezing method seawater desalination process and a large number of salt cells exist in the made ice blocks is solved, meanwhile, the stability of the system in the freezing method seawater desalination process is greatly improved, and the cold quantity generated outside and needed by freezing is greatly reduced through the cold quantity brought by self vaporization.
Drawings
Fig. 1 is a schematic structural diagram of a seawater desalination system based on rotary wheel deep dehumidification according to an embodiment of the present invention.
In the figure: the device comprises a seawater tank 1, a first water pump 2, a first evaporator 3, a first cooler 4, a second cooler 5, an ice melting device 6, a fresh water tank 7, a first valve 8, an evaporation freezing chamber 9, a second valve 10, a first fan 11, a dehumidification rotating wheel 12, a second fan 13, a second evaporator 14, a first throttle valve 15, a second throttle valve 16, a condenser 17, a third fan 18, a solar heat collector 19, an electric heater 20, a solid-liquid separator 21, a second valve 22, a concentrated brine water collecting tank 23, a second water pump 24, a third valve 25, a third water pump 26, a compressor 27 and a fourth valve 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be described more clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the invention provides a seawater desalination system based on rotating wheel deep dehumidification, which comprises a seawater precooling device, an air dehumidification precooling device and a seawater evaporation freezing desalination device, as shown in fig. 1. The seawater pre-cooling device is used for pre-cooling seawater and inputting the pre-cooled seawater into the seawater evaporation and refrigeration desalination device, the air dehumidification pre-cooling device is used for dehumidifying and pre-cooling air and inputting the dehumidified and pre-cooled air into the seawater evaporation and refrigeration desalination device, and the seawater evaporation and refrigeration desalination device is used for evaporating and freezing seawater and realizing seawater desalination.
The seawater evaporation freezing desalination device comprises an evaporation freezing chamber 9, a solid-liquid separator 21, a de-icing device 6 and a fresh water tank 7 which are connected in sequence. The evaporation freezing chamber 9 is provided with a seawater inlet, an air inlet, an ice crystal brine outlet and an air outlet, and a distributor is arranged at the seawater inlet of the evaporation freezing chamber 9. The solid-liquid separator 21 has an ice crystal brine inlet and an ice crystal outlet, the ice melter 6 has an ice crystal inlet and a fresh water outlet, and the fresh water tank 7 has a fresh water inlet.
The air dehumidifying and pre-cooling device comprises a first fan 11, a dehumidifying rotating wheel 12, a second fan 13, a pre-cooling mechanism, a third fan 18 and a pre-heating mechanism. The desiccant rotor 12 has a desiccant zone inlet, a desiccant zone outlet and a regeneration zone inlet.
The seawater precooling device is connected with a seawater inlet of the evaporation freezing chamber 9, and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber 9. An ice crystal brine outlet of the evaporation freezing chamber 9 is connected with an ice crystal brine inlet of the solid-liquid separator 21, an ice crystal outlet of the solid-liquid separator 21 is connected with an ice crystal inlet of the ice melting device 6, and a fresh water outlet of the ice melting device 6 is connected with an inlet of the fresh water tank 27.
An air outlet of the evaporation freezing chamber 9 is connected with an inlet of a first fan 11, an outlet of the first fan 11 is connected with a dehumidification area inlet of a dehumidification rotating wheel 12, a dehumidification area outlet of the dehumidification rotating wheel 12 is connected with an inlet of a second fan 13, an outlet of the second fan 13 is connected with an inlet of a precooling mechanism, and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber 9. The outlet of the third fan 18 is connected with the inlet of the preheating mechanism, and the outlet of the preheating mechanism is connected with the inlet of the regeneration area of the dehumidifying rotary wheel 12.
In the seawater desalination system based on the deep dehumidification by the rotating wheel of the embodiment, the seawater pre-cooling device pre-cools the seawater and then sends the seawater into the evaporation freezing chamber 9, and the seawater is atomized into water drops at the seawater inlet of the evaporation freezing chamber 9. In the air dehumidifying and pre-cooling device, the air from the evaporating and freezing chamber 9 is fully contacted with the dehumidifying area of the dehumidifying wheel 12, and because the partial pressure of the water vapor in the dehumidifying area is lower than that of the water vapor in the air, the water vapor in the dehumidifying wheel 12 is transferred to the dehumidifying wheel 12 under the action of pressure difference, and the dehumidifying process of the air is completed. The low moisture content air dehumidified by the desiccant rotor 12 is pre-cooled by the pre-cooling mechanism and then sent to the evaporative freezing chamber 9. The regeneration zone of the desiccant rotor 12 is fully contacted with the hot air preheated by the preheating mechanism, so that the temperature of the desiccant rotor 12 is raised, the partial pressure of the water vapor is higher than that of the water vapor in the air, the water vapor in the desiccant rotor 12 is transferred to the air under the action of pressure difference and is brought into the environment by the air, and the regeneration process of the desiccant rotor is completed. In the evaporation freezing chamber 9, seawater water drops are quickly evaporated in low-temperature air with low moisture content, vaporization latent heat absorbed by the evaporation of the seawater water drops is quickly formed into ice crystals, and meanwhile, salt in the water drops is extruded to the surfaces of the ice crystals, so that a mixture of the ice crystals and strong brine is obtained and is input into the solid-liquid separator 21. The solid-liquid separator 21 separates to obtain ice crystals, and the ice crystals enter the ice melting device 6 and are sent into the fresh water tank 7 after being melted.
The seawater desalination system provided by the embodiment of the invention is characterized in that cooled seawater is sent into an evaporation freezing chamber, the seawater is sprayed in a low-temperature and low-humidity air environment, ice crystals are separated out by evaporation freezing to form ice crystal-brine slurry, fluid ice is obtained by washing and solid-liquid separation, and then the slurry is melted to obtain fresh water. The low-moisture-content air is prepared by absorbing moisture in the air in a rotating wheel dehumidification area, and then sequentially exchanges heat with an evaporator, low-temperature strong brine and fluid ice of a heat pump cycle to obtain the low-temperature low-moisture-content air for evaporation and freezing of seawater. The heat released in the condenser in the heat pump cycle is used to preheat the hot air needed for the regeneration of the runner, and the cold in the evaporator is used to cool the seawater and the air with low moisture content used to evaporate the seawater. The dehumidification rotating wheel 12 is used for preparing dry air with the water vapor partial pressure lower than the three-phase pressure, the energy-saving means of rotating wheel dehumidification is used for obtaining the environment with low water vapor partial pressure, the air with low moisture content is used for realizing the evaporation and refrigeration of the seawater, and finally the seawater desalination is realized. Compared with a vacuum freezing method, the evaporation chamber is vacuumized without consuming a large amount of energy. The problem that the taste of the fresh water is poor due to the fact that the ice making volume is large in the freezing method seawater desalination process and a large number of salt cells exist in the made ice blocks is solved, meanwhile, the stability of the system in the freezing method seawater desalination process is greatly improved, and the cold quantity generated outside and needed by freezing is greatly reduced through the cold quantity brought by self vaporization. The heat and the cold are used for the regeneration of the dehumidifying rotating wheel and the precooling of the working medium, and the air entering the evaporation freezing chamber 9 is recycled, so that the utilization rate of energy is improved, and the operating efficiency of the system is effectively improved.
Preferably, the seawater pre-cooling apparatus comprises a first evaporator 3 and a first cooler 4. The first evaporator 3 has a seawater inlet and a seawater outlet, and the first cooler 4 has a seawater pipe inlet and a seawater pipe outlet. The seawater outlet of the first evaporator 3 is connected with the seawater pipeline inlet of the first cooler 4, and the seawater pipeline outlet of the first cooler 4 is connected with the seawater inlet of the evaporation freezing chamber 9. The outlet of the sea water tank 1 is provided with a fourth valve 28, when the sea water tank works, the fourth valve 28 is opened, the sea water in the sea water tank 1 is pumped by the first water pump 2 and then sequentially enters the first evaporator 3 and the first cooler 4, and the first evaporator 3 and the first cooler 4 cool the sea water.
Further, the ice melting device 6 is also provided with a seawater pipeline inlet and a seawater pipeline outlet, the seawater pipeline outlet of the first cooler 4 is connected with the seawater pipeline inlet of the ice melting device 6, and the seawater pipeline outlet of the ice melting device 6 is connected with the seawater inlet of the evaporation freezing chamber 9. The seawater output by the first cooler 4 firstly enters the ice melting device 6, passes through the ice melting device 6 and then is sent into the evaporation freezing chamber 9, and ice crystals in the ice melting device 6 can absorb a large amount of heat when melting, so that the seawater can be further cooled, the temperature of the seawater input into the evaporation freezing chamber 9 is lower, and the seawater evaporation and icing effects are improved.
Preferably, the pre-cooling mechanism comprises a second evaporator 14 and a second cooler 5. The second evaporator 14 has an air inlet and an air outlet, and the second cooler 5 has an air duct inlet and an air duct outlet. The outlet of the second fan 13 is connected to the air inlet of the second evaporator 14, the air outlet of the second evaporator 14 is connected to the air duct inlet of the second cooler 5, and the air duct outlet of the second cooler 5 is connected to the air inlet of the evaporative freezing chamber 9. The air dehumidified by the desiccant rotor 12 is sucked by the third fan 18 and enters the second evaporator 14 and the second cooler 5 in sequence, and the second evaporator 14 and the second cooler 5 cool the low-humidity air.
Further, the ice melting device 6 is also provided with an air pipeline inlet and an air pipeline outlet, the air pipeline outlet of the second cooler 5 is connected with the air pipeline inlet of the ice melting device 6, and the air pipeline outlet of the ice melting device 6 is connected with the air inlet of the evaporation freezing chamber 9. The air output by the second cooler 5 firstly enters the ice melting device 6, passes through the ice melting device 6 and then is sent into the evaporation freezing chamber 9, and ice crystals in the ice melting device 6 can absorb a large amount of heat when melting, so that the air can be further cooled, the temperature of the low-humidity air input into the evaporation freezing chamber 9 is lower, and the seawater evaporation and icing effects are improved.
Preferably, the seawater desalination system of the embodiment of the present invention further includes a heat pump device, and the heat pump device includes a compressor 27 and a condenser 17. The first evaporator 3 and the second evaporator 14 each have a refrigerant inlet and a refrigerant outlet. An outlet of the compressor 27 is connected to a refrigerant inlet of the condenser 17, a refrigerant outlet of the condenser 17 is connected to a refrigerant inlet of the first evaporator 3 and a refrigerant inlet of the second evaporator 14, respectively, and a refrigerant outlet of the first evaporator 3 and a refrigerant outlet of the second evaporator 14 are both connected to an inlet of the compressor 27. The refrigerant is internally circulated through the compressor 27, the condenser 17, the first evaporator 3 and the second evaporator 14, the refrigerant generates cold in the first evaporator 3 to pre-cool the seawater fed into the evaporation freezing chamber 9, and generates cold in the second evaporator 14 to pre-cool the air with low moisture content fed into the evaporation freezing chamber 9.
Further, the condenser 17 has an air inlet and an air outlet, and the air outlet of the condenser 17 is connected to an inlet of the third fan 18. The refrigerant generates heat in the condenser 17 to preheat the air sent to the desiccant rotor 12. The air is preheated to about 40 ℃ in the condenser 17, so that the waste heat of the condenser 17 is utilized, the heating load of a preheating mechanism is reduced, and the investment cost is saved.
Preferably, the seawater desalination system of the embodiment of the present invention further includes a concentrated brine collector 23, the evaporation freezing chamber 9 and the solid-liquid separator 21 each have a concentrated brine outlet, and the first cooler 4 and the second cooler 5 each have a coolant inlet and a coolant outlet. The strong brine outlet of the evaporation freezing chamber 9 and the strong brine outlet of the solid-liquid separator 21 are connected with the inlet of the strong brine water collector 23, the outlet of the strong brine water collector 23 is connected with the cooling liquid inlet of the first cooler 4, and the cooling liquid outlet of the first cooler 4 is connected with the cooling liquid inlet of the second cooler 5.
In the above embodiment, the brine separated by the solid-liquid separator 21 and the concentrated seawater separated by the evaporation freezing chamber 9 are merged into the concentrated brine collector 23, and are delivered to the first cooler 4 and the second cooler 5 by the second water pump 24 as cooling media for pre-cooling the non-desalinated seawater and the low-humidity air, respectively. The embodiment of the invention uses the strong brine obtained after desalination as a cooling medium to cool the seawater and the low-humidity air entering the evaporation freezing chamber 9, thereby improving the utilization rate of energy and effectively improving the operating efficiency of the system.
Preferably, the solid-liquid separator 21 further has a fresh water inlet, and the fresh water inlet of the solid-liquid separator 21 is provided with a distributor. The outlet of the fresh water tank 7 is connected to the fresh water inlet of the solid-liquid separator 21. In this embodiment, part of the fresh water is introduced from the fresh water tank 7 and enters the solid-liquid separator 21, and the ice crystals are sprayed by the distributor to remove the salt on the surfaces of the ice crystals, thereby improving the separation effect of the ice crystals and the brine and improving the desalination effect.
Preferably, the preheating mechanism comprises a solar heat collector 19 and an electric heater 20, an outlet of the third fan 18 is connected with an air inlet of the solar heat collector 19, an air outlet of the solar heat collector 19 is connected with an air inlet of the electric heater 20, and an air outlet of the electric heater 20 is connected with an inlet of the regeneration zone of the desiccant rotor 12. The air is heated to nearly 100 ℃ in the solar collector 19 and then heated to about 150 ℃ regeneration temperature by the electric heater 20. Therefore, the energy is utilized in a gradient way, and the energy consumption of the electric heater is reduced.
The working process of the seawater desalination system of the preferred embodiment is as follows:
the compressor 27 is operated, and the refrigerant is internally circulated in the compressor 27, the condenser 17, the first evaporator 3, and the second evaporator 14. The refrigerant generates heat in the condenser 17 to preheat the air being sent to the desiccant rotor 12, generates cooling in the first evaporator 3 to pre-cool the seawater being sent to the evaporative freezer compartment 9, generates cooling in the second evaporator 14 to pre-cool the low moisture content air being sent to the evaporative freezer compartment 9.
The regeneration zone of the desiccant rotor 12 is in full contact with the hot air preheated by the condenser 17, the third fan 18, the solar collector 19 and the electric heater 20, so that the temperature of the desiccant rotor 12 rises, the partial pressure of the water vapor is higher than that of the water vapor in the air, the water vapor in the desiccant rotor 12 is transferred to the air under the action of pressure difference and is brought into the environment by the air, and the regeneration process of the desiccant rotor 12 is completed. The air from the evaporation freezing chamber 9 is fully contacted with the dehumidification area of the dehumidification rotating wheel 12, and at the moment, because the water vapor partial pressure in the dehumidification area is lower than the water vapor partial pressure in the air, the water vapor in the rotating wheel is transferred to the dehumidification rotating wheel under the action of pressure difference, and the dehumidification process of the air is completed.
The air from the desiccant rotor 12, which has a low moisture content but a slightly higher temperature, is cooled by the refrigerant in the second evaporator 14, the concentrated brine in the second cooler 5 and the fluid ice 6 in the ice melter 6 to obtain air with a low temperature and a low moisture content, and then sent to the evaporative freezing chamber 9. After being cooled by the refrigerant in the first evaporator 3, the concentrated brine in the first cooler 4 and the fluid ice in the ice melting device 6, the seawater is uniformly sprayed in the evaporation freezing chamber 9 through the distributor. At this time, the partial pressure of the vapor of the air in the evaporation freezing chamber 9 is lower than the saturated partial pressure 609Pa of the vapor at the triple point of the seawater, and the seawater droplets are evaporated under the driving of the partial pressure difference of the vapor, so that the heat transfer and mass transfer are carried out between the seawater droplets and the ambient air. The moisture content of the vapor evaporated by the air absorbing the liquid drops is increased, the temperature of the seawater liquid drops is continuously reduced because the surface of the seawater liquid drops is gradually evaporated to take away latent heat of vaporization, the liquid drops are supercooled and then change into ice crystals when meeting a refrigerator, the salt in the seawater is extruded to the surfaces of the ice crystals because of the icing of the water, and then the mixture of the ice crystals and the strong brine enters a solid-liquid separator 21. Part of fresh water is introduced from the fresh water tank 7 and enters the solid-liquid separator 21, ice crystals are sprayed by the distributor to remove salt on the surfaces of the ice crystals, and the ice crystals and the salt water are separated by the filter screen. The ice crystals enter the ice melting device 6, and the brine and the concentrated seawater separated from the evaporation freezing chamber 9 are merged and enter the concentrated brine water collector 23 for precooling the non-desalinated seawater and the low-humidity air. The ice crystals in the ice melting device 6 further cool the desalinated seawater and the low-humidity air, and the desalinated seawater and the low-humidity air are delivered into the fresh water tank 7 after being melted. The air from the evaporation freezing chamber 9 with high moisture content is sent to the dehumidification rotating wheel 12 for dehumidification under the action of the first fan 11, and is changed into reusable air with low moisture content again, so that the system operates circularly.
The seawater desalination system provided by the embodiment of the invention utilizes an air drying technology of rotary dehumidification, seawater entering the system is subjected to multi-stage precooling, then is sent into an evaporation freezing chamber, and is atomized into water drops; meanwhile, the air with low moisture content dehumidified by the rotating wheel is also sent into the evaporation freezing chamber after being precooled, so that seawater water drops can be rapidly evaporated in the air with low temperature and low moisture content, latent heat of vaporization absorbed by the evaporation of the seawater water drops is rapidly formed into ice crystals, and meanwhile, salt in the liquid drops is extruded to the surface of the ice crystals, thereby avoiding the problem that the taste of fresh water is not good finally because a large amount of salt cells exist in the prepared ice blocks due to large ice making volume in the seawater desalination by a freezing method.
The seawater desalination system provided by the embodiment of the invention effectively realizes energy utilization gradient, introduces solar energy, and greatly reduces the power consumption compared with the vacuum freezing method that the seawater desalination relies on huge energy consumed by a compressor to vacuumize an evaporation freezing chamber to create an environment with low water vapor partial pressure. The system utilizes the rotating wheel to dehumidify and remove most of water vapor in the air to prepare the air with low moisture content, thereby creating an environment with low water vapor partial pressure, realizing the evaporation and freezing of seawater, and the dehumidifying rotating wheel in the system utilizes a multi-stage heat source to realize regeneration, so that the system stably runs, avoids huge energy consumed for creating and extracting vacuum, and is beneficial to energy conservation and environmental protection.
The seawater desalination system provided by the embodiment of the invention reasonably utilizes energy sources at all levels, fully embodies the integral complementary advantage of combined operation of the composite system, and grasps different grades of cold and heat sources, and is reasonably arranged and utilized in a stepped manner. The evaporator, strong brine and fluid ice are used for cooling seawater and low-humidity air in sequence, and the condenser, the solar heat collector and the electric heater are used for heating air for dehumidifying runner regeneration in sequence. The utilization rate of energy is greatly improved, and the operating efficiency of the system is effectively improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is also intended to be covered by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. A seawater desalination system based on rotary wheel deep dehumidification is characterized by comprising a seawater precooling device, an air dehumidification precooling device and a seawater evaporation freezing desalination device; the seawater evaporation freezing desalination device comprises an evaporation freezing chamber (9) which is provided with a seawater inlet, an air inlet, an ice crystal brine outlet and an air outlet, a solid-liquid separator (21) which is provided with an ice crystal brine inlet and an ice crystal outlet, a de-icing device (6) which is provided with an ice crystal inlet and a fresh water outlet and a fresh water tank (7) which is provided with a fresh water inlet, which are connected in sequence; a distributor is arranged at a seawater inlet of the evaporation freezing chamber (9); the air dehumidification precooling device comprises a first fan (11), a dehumidification rotating wheel (12) with a dehumidification area inlet, a dehumidification area outlet and a regeneration area inlet, a second fan (13), a precooling mechanism, a third fan (18) and a preheating mechanism;
the seawater precooling device is connected with a seawater inlet of the evaporation freezing chamber (9), and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber (9); an ice crystal brine outlet of the evaporation freezing chamber (9) is connected with an ice crystal brine inlet of the solid-liquid separator (21), an ice crystal outlet of the solid-liquid separator (21) is connected with an ice crystal inlet of the ice melting device (6), and a fresh water outlet of the ice melting device (6) is connected with an inlet of the fresh water tank (27);
an air outlet of the evaporation freezing chamber (9) is connected with an inlet of a first fan (11), an outlet of the first fan (11) is connected with an inlet of a dehumidification region of a dehumidification rotating wheel (12), an outlet of the dehumidification region of the dehumidification rotating wheel (12) is connected with an inlet of a second fan (13), an outlet of the second fan (13) is connected with an inlet of a precooling mechanism, and an outlet of the precooling mechanism is connected with an air inlet of the evaporation freezing chamber (9); the outlet of the third fan (18) is connected with the inlet of the preheating mechanism, and the outlet of the preheating mechanism is connected with the inlet of the regeneration area of the dehumidifying rotary wheel (12).
2. The seawater desalination system based on rotary wheel deep dehumidification according to claim 1, wherein the seawater pre-cooling device comprises a first evaporator (3) having a seawater inlet and a seawater outlet, and a first cooler (4) having a seawater pipeline inlet and a seawater pipeline outlet, the seawater outlet of the first evaporator (3) is connected with the seawater pipeline inlet of the first cooler (4), and the seawater pipeline outlet of the first cooler (4) is connected with the seawater inlet of the evaporation freezing chamber (9).
3. The seawater desalination system based on the deep dehumidification of the rotating wheel according to claim 2, wherein the ice-melting device (6) further comprises a seawater pipeline inlet and a seawater pipeline outlet, the seawater pipeline outlet of the first cooler (4) is connected with the seawater pipeline inlet of the ice-melting device (6), and the seawater pipeline outlet of the ice-melting device (6) is connected with the seawater inlet of the evaporative freezing chamber (9).
4. The seawater desalination system based on rotary wheel deep dehumidification according to claim 2, wherein the pre-cooling mechanism comprises a second evaporator (14) having an air inlet and an air outlet, and a second cooler (5) having an air pipeline inlet and an air pipeline outlet, wherein the outlet of the second fan (13) is connected with the air inlet of the second evaporator (14), the air outlet of the second evaporator (14) is connected with the air pipeline inlet of the second cooler (5), and the air pipeline outlet of the second cooler (5) is connected with the air inlet of the evaporation freezing chamber (9).
5. The seawater desalination system based on rotating wheel deep dehumidification according to claim 4, wherein the ice melting device (6) further comprises an air pipeline inlet and an air pipeline outlet, the air pipeline outlet of the second cooler (5) is connected with the air pipeline inlet of the ice melting device (6), and the air pipeline outlet of the ice melting device (6) is connected with the air inlet of the evaporative freezing chamber (9).
6. The seawater desalination system based on rotary wheel deep dehumidification of claim 4, further comprising a heat pump device, wherein the heat pump device comprises a compressor (27) and a condenser (17); the first evaporator (3) and the second evaporator (14) each have a refrigerant inlet and a refrigerant outlet; the outlet of the compressor (27) is connected with the refrigerant inlet of the condenser (17), the refrigerant outlet of the condenser (17) is respectively connected with the refrigerant inlet of the first evaporator (3) and the refrigerant inlet of the second evaporator (14), and the refrigerant outlet of the first evaporator (3) and the refrigerant outlet of the second evaporator (14) are both connected with the inlet of the compressor (27).
7. The seawater desalination system based on rotary wheel deep dehumidification according to claim 6, wherein the condenser (17) further has an air inlet and an air outlet, and the air outlet of the condenser (17) is connected with an inlet of the third fan (18).
8. The seawater desalination system with deep runner dehumidification according to claim 5, further comprising a concentrated brine water collector (23), wherein the evaporation freezing chamber (9) and the solid-liquid separator (21) are provided with concentrated brine outlets, and the first cooler (4) and the second cooler (5) are provided with cooling liquid inlets and cooling liquid outlets; the strong brine outlet of the evaporation freezing chamber (9) and the strong brine outlet of the solid-liquid separator (21) are connected with the inlet of a strong brine water collector (23), the outlet of the strong brine water collector (23) is connected with the cooling liquid inlet of the first cooler (4), and the cooling liquid outlet of the first cooler (4) is connected with the cooling liquid inlet of the second cooler (5).
9. The seawater desalination system based on rotary wheel deep dehumidification according to claim 1, wherein the solid-liquid separator (21) further has a fresh water inlet, and a distributor is arranged at the fresh water inlet of the solid-liquid separator (21); the outlet of the fresh water tank (7) is connected with the fresh water inlet of the solid-liquid separator (21).
10. The seawater desalination system based on wheel deep dehumidification of claim 1, wherein the preheating mechanism comprises a solar heat collector (19) and an electric heater (20), an outlet of the third fan (18) is connected with an air inlet of the solar heat collector (19), an air outlet of the solar heat collector (19) is connected with an air inlet of the electric heater (20), and an air outlet of the electric heater (20) is connected with a regeneration zone inlet of the desiccant wheel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748333.2A CN113526601A (en) | 2021-06-30 | 2021-06-30 | Seawater desalination system based on runner deep dehumidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748333.2A CN113526601A (en) | 2021-06-30 | 2021-06-30 | Seawater desalination system based on runner deep dehumidification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113526601A true CN113526601A (en) | 2021-10-22 |
Family
ID=78097643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110748333.2A Pending CN113526601A (en) | 2021-06-30 | 2021-06-30 | Seawater desalination system based on runner deep dehumidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113526601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342597A (en) * | 2022-07-01 | 2022-11-15 | 中国石油化工股份有限公司 | LNG cold energy used for air separation and seawater desalination system and comprehensive utilization method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093341A (en) * | 1993-04-07 | 1994-10-12 | 上海南泽给排水工程技术公司 | Freezing method for desalting seawater and the device that combines with evaporation |
| CN102674491A (en) * | 2012-05-14 | 2012-09-19 | 上海交通大学 | Seawater desalination device |
| KR20180015431A (en) * | 2016-08-03 | 2018-02-13 | 성균관대학교산학협력단 | Freezing-Distillation hybrid desalination system |
| CN112158903A (en) * | 2020-09-30 | 2021-01-01 | 东南大学 | Seawater desalination device based on solution dehumidification |
-
2021
- 2021-06-30 CN CN202110748333.2A patent/CN113526601A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093341A (en) * | 1993-04-07 | 1994-10-12 | 上海南泽给排水工程技术公司 | Freezing method for desalting seawater and the device that combines with evaporation |
| CN102674491A (en) * | 2012-05-14 | 2012-09-19 | 上海交通大学 | Seawater desalination device |
| KR20180015431A (en) * | 2016-08-03 | 2018-02-13 | 성균관대학교산학협력단 | Freezing-Distillation hybrid desalination system |
| CN112158903A (en) * | 2020-09-30 | 2021-01-01 | 东南大学 | Seawater desalination device based on solution dehumidification |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342597A (en) * | 2022-07-01 | 2022-11-15 | 中国石油化工股份有限公司 | LNG cold energy used for air separation and seawater desalination system and comprehensive utilization method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112158903B (en) | Seawater desalination device based on solution dehumidification | |
| CN204063414U (en) | A kind of heat pump drives pre-cold mould solution humidifying Fresh air handling units | |
| CN102328965B (en) | Solar seawater desalination plant and operation method thereof | |
| CN103394267A (en) | Oil gas recovery device combining condensation and adsorption | |
| CN201503090U (en) | Heat recovering energy-saving dehumidifying system for air hot pipe | |
| CN201706611U (en) | New wind energy-saving heat pump rotating wheel dehumidifier | |
| CN109078447A (en) | A kind of device and method of off-gas recovery dry ice | |
| CN102038272A (en) | Energy-saving compound air-conditioning device for food freezing and thawing device | |
| CN208454788U (en) | A kind of low temperature drying equipment handling sludge | |
| CN106895617A (en) | For the separator of incoagulable gas in the ammonia absorption type refrigeration circulatory system | |
| CN108507083B (en) | Ice-storage type heat source tower heat pump system device and method | |
| CN102331052B (en) | Evaporative-cooling-based ice and water compound cold accumulation device | |
| CN100494833C (en) | Method and apparatus for dynamically making fluidic ice by solution dehumidification and evaporation | |
| CN106915792B (en) | Wind-solar complementary seawater desalination device | |
| CN113526601A (en) | Seawater desalination system based on runner deep dehumidification | |
| CN107537167A (en) | Evaporating, concentrating and crystallizing system and evaporation process method | |
| CN207270730U (en) | Evaporating, concentrating and crystallizing system | |
| CN109724289A (en) | Multiple-effect regenerates frostless heat pump system device and method | |
| CN106958987A (en) | A kind of air pre-dehumidified separated for air and chilldown system | |
| CN203525336U (en) | Low-temperature evaporation and concentration device | |
| CN113375382B (en) | System for preparing fluid ice by dehumidification and evaporation of rotating wheel driven by transcritical carbon dioxide heat pump | |
| CN102432081A (en) | Humidity difference driven evaporative freezing sea water desalination method, and device for the same | |
| CN202778223U (en) | Composite dehumidifier | |
| CN112432492B (en) | Based on lithium bromide low temperature medicinal material drying device | |
| CN101935078B (en) | Sea water desalination device and method |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211022 |