CN1049643A - Method and device for desalting seawater by utilizing natural energy - Google Patents
Method and device for desalting seawater by utilizing natural energy Download PDFInfo
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- CN1049643A CN1049643A CN90104680A CN90104680A CN1049643A CN 1049643 A CN1049643 A CN 1049643A CN 90104680 A CN90104680 A CN 90104680A CN 90104680 A CN90104680 A CN 90104680A CN 1049643 A CN1049643 A CN 1049643A
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- water
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- 239000013535 sea water Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 8
- 238000011033 desalting Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000013505 freshwater Substances 0.000 claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 3
- 239000011707 mineral Substances 0.000 claims abstract description 3
- 238000001704 evaporation Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000002352 surface water Substances 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000007701 flash-distillation Methods 0.000 claims 1
- 239000008236 heating water Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000010612 desalination reaction Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 235000010894 Artemisia argyi Nutrition 0.000 description 1
- 208000012639 Balance disease Diseases 0.000 description 1
- 244000030166 artemisia Species 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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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
- Y02A20/124—Water desalination
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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
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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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
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Abstract
In order to make the seawater desalination system self-sufficient in energy and achieve stable and continuous production of cheap fresh water. Sea water on the surface of sea is adopted to absorb a certain amount of natural energy, steam is generated by a flash evaporator and then a steam turbine is pushed to generate power, and the exhaust steam of the turbine is condensed into fresh water in a condenser. The steam turbine generates electricity which is used by pumps in the supply system and has redundant electricity output. Therefore, the device can be widely applied to the places with fresh water shortage, such as ships on the sea, islands and the like, and can be used as a fully practical seawater desalination plant to produce fresh water and provide raw water for extracting minerals.
Description
The invention belongs to sea water desaltination, natural energy utilizes the field.Present method and device are mainly used in sea water desaltination, also provide method for how utilizing low-grade natural energy to generate electricity.
Because worldwide Freshwater resources are poor day by day, therefore, the sea water desaltination problem is more and more to cause people's attention, and many countries are all carrying out the research and development of various sea water desaltinations.The technology of comparative maturity has ion-exchange membrane, reverse osmosis membrane and distillation etc. at present, but these technology all exist facility investment big, consume the external energy in a large number, the shortcoming that desalinating cost is high.At present, about 2.7 dollars/ton of its sea water desaltination average cost of the middle east that desalination water is used morely, service discharge accounts for 2% of whole service discharges, therefore, although these technology are ripe, still is difficult to extensive use.
The technology of closing on the present invention is that " low temperature (24 ℃～27 ℃) energy excitor; low temperature (24 ℃～27 ℃) distiller, (Chinese patent CN85 106310 A) utilize a bottom to be immersed in the seawater and with seawater to communicate; can bear the container of an atm difference; and manage to make and produce vacuum in its container and evaporate seawater, steam is by steam turbine work done generating.This technology is that distiller communicates with seawater, can only be across the sea, and can not build on other places, must provide a large amount of energy when setting up vacuum simultaneously, can not keep stable vacuum, unit volume is huge, vaporization efficiency is low, sea water desaltination cost height, energy balance difficulty.
Therefore, the energy balance that the objective of the invention is to how to solve sea water desaltination reaches steady and continuous and produces very cheap fresh water, and externally supplies the method and apparatus of electric power.
In order to reach above-mentioned well heater of employing-the utilize water of the Nature available energy (temperature is higher than any heat energy of seawater surface) heating from extra large top layer, and in a special flasher, evaporate, utilize an aspirator to take out leaked-in air in the system, reach and keep and stable vacuum.Steam is delivered to steam turbines work done generating by steam-pipe, steam behind the turbine expansion working is condensed into fresh water in condensing, generator institute electricity is except that system itself uses, and unnecessary electric power can supply outward, also can store, do replenishing when not having utilizable energy system for system.Thereby realized that energy balance and cheapness in the desalting process produce the purpose of fresh water (cost of the fresh water of making is the quite depreciation of facility investment only).
The progress of work of the present invention: start aspirator (12) and make steam flasher (4), condenser (9), steam-pipe (15), steam turbines all is in vacuum state in (8), opening primer pump (2) makes extra large surface water absorb not partial heat energy from the Nature through natural energy well heater (3), and water temperature is raise, enter flasher (4) again, and keep certain water level, when the vacuum in the system reaches saturation pressure under the flasher inflow temperature, the seawater start vaporizer, open condenser condensate pump (6) this moment, temperature in the condenser begins to descend, vacuum further improves in the condenser, one open device machine inlet valve (7) this moment again, makes steam enter the steam turbines expansion working, and vapour volume further enlarges, enter the steam condensation under the water of condensation effect behind the condenser, the volume rapid drawdown is dwindled nearly 100,000 times, and vacuum further improves, just continuously evaporation of seawater like this, work done is expanded, and is condensed into fresh water.At the same time, in order to keep steam turbines, condenser, flasher vacuum, promote the evaporation of steam, work done expansion and condensation, bleed (apparatus) must work on, because system Chinese mugwort itself is in vacuum state, therefore, inevitably from bonding surfaces such as turbine arbor envelope, the pipe flange air that bleeds, and inherent portion gas in the seawater, these gases have increased and have been the component of noncondensing gas in the system, not only reduced steam condensing temperature, simultaneously reduce heat transfer coefficient significantly, the working efficiency of condensing is reduced, vacuum obtains destroying.Therefore, aspirator is the condition that guarantees continuous high-efficient evaporation, work done, condensation.Enter the seawater of flasher (4), evaporation back water temperature descends to some extent and (absorbs the latent heat of vaporization, relevant with the water cycle amount) seawater is concentrated, for utilizing heat energy, this portion water must be provided with heat re-circulated withdrawer (1) when temperature is higher than extra large sea surface temperature, and a part can continue to participate in circulation, another part (part that concentration is higher) discharges after heat recuperation, and draining can be used as the former water that extracts mineral.
The present invention has utilized a large amount of natural energy resources, not only makes seawater sea difference obtain utilizing, and makes other energy such as sun power obtain utilizing simultaneously again.Steam evaporating device of the present invention adopts flash evaporation technology that equipment volume is dwindled greatly, efficient improves greatly, and owing to utilize natural heat energy in a large number, steam turbines and condenser volume dwindle greatly, water temperature to the condensation seawater requires to reduce, and has made things convenient for the seashore not have the use on ground such as deep water sea area area and boats and ships, and investment also reduces greatly, therefore, Cost of seawater desalination is very cheap.
Description of drawings: inventive principle such as Fig. 1, heat re-circulated withdrawer 2, primer pump 3, natural energy well heater 4, steam flasher 5, water discharge valve 6, condensate pump 7, turbine inlet valve 8, steam turbines 9, condenser 10, hot well 11, fresh-water tank 12, aspirator 13, generator 14, water outlet 15, vapour pipe 16, blast main 17, draining 18, extra large surface water 19, offlet 20, variable valve
Claims (7)
1, utilize natural energy to carry out the method and the device of sea water desaltination.In order to produce cheap fresh water with seawater, extra large surface water is absorbed natural heat energy, and then evaporation, steam promotes the generating of steam turbine generation machine, and the steam discharge of turbine is condensed into fresh water.It is characterized in that: a natural energy well heater (3) links with a steam flash distillation machine (4) import, and a heat re-circulated withdrawer (1) links to each other with flasher (4) water port with natural energy well heater (3) inlet respectively; Flasher (4) outlet is connected with steam turbines (8) inlet, steams machine turbine exhaust hole and condenser (9) and hot well (10) and is right after; An aspirator (12) links to each other with flasher, cylinder shaft seal and condenser, to reach air in the extraction system, reaches the method for stably manufactured fresh water.
2, the described natural energy well heater of claim 1 (3) is characterized in that one or more apparatus for heating water by solar energy or heat source temperature device are higher than the one or more well heater of sea surface temperature.
3, the described steam flasher of claim 1 (4) is characterized by the vacuum-tight container of under atmospheric pressure working; The stainless wire mesh separator is equipped with on its top, and centrifugal steam separator, vapour outlet are located at the top and link to each other with steam turbines, and the seawater inlet is at the container middle part, and water segregator is equipped with in the ingress, and external container is equipped with water level gauge, and the bottom is a water port.
4, the described heat re-circulated withdrawer of claim 1 (1), it is characterized by a well heater hybrid and surface-type is formed, mixing portion is at the hot water end, surface portion is at the cold water end, the surface portion outlet does not have water discharge valve (5), its draining (17) is the higher seawater of concentration, can be used as the former water that refines mineral.
5, the exhaust hole of the described turbine of claim 1 and condenser (9) and hot well (10), it is characterized by the bottom that condenser is positioned at the turbine exhaust hole, hot well and condenser are connected as a single entity, and be positioned at the condenser bottom, hot well is one and has certain volumetrical aqua storage tank, and be provided with water level gauge, offlet (9) and variable valve (20), and communicate with fresh-water tank (11).
6, claim 5 is described, and offlet that hot well is provided with and variable valve banded fresh-water tank is characterized by the fresh-water tank horizontal plane should be lower than the about 10M of hot well horizontal plane, otherwise needs to draw water with pump.Hot well offlet pelvic outlet plane is lower than any intake of fresh-water tank.
7, the described aspirator of claim 1 (12) is characterized in that, makes recirculated water with fresh-water tank when bleeding with jetting, and outlet communicates with fresh-water tank when adopting vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90104680A CN1049643A (en) | 1990-07-11 | 1990-07-11 | Method and device for desalting seawater by utilizing natural energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90104680A CN1049643A (en) | 1990-07-11 | 1990-07-11 | Method and device for desalting seawater by utilizing natural energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1049643A true CN1049643A (en) | 1991-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90104680A Pending CN1049643A (en) | 1990-07-11 | 1990-07-11 | Method and device for desalting seawater by utilizing natural energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049643A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337929C (en) * | 2003-01-21 | 2007-09-19 | 张文知 | Method and equipment for desalting seawater and bitter by using ass natural energy |
| WO2012070055A1 (en) * | 2010-11-24 | 2012-05-31 | Ebenezer Muthunayagam Abraham | Process, system and configuration for integrated ocean energy cum desalination system |
| CN102975843A (en) * | 2012-11-13 | 2013-03-20 | 浙江海洋学院 | Tail gas surplus heat utilization device for large-scale marine main engine |
| CN103089356A (en) * | 2013-01-22 | 2013-05-08 | 中国科学院广州能源研究所 | Flash evaporation-double work medium combined power generation device |
| CN103206275A (en) * | 2012-09-19 | 2013-07-17 | 广西南宁市派宇能源科技开发有限公司 | Light, heat and electricity converting device |
| CN110259654A (en) * | 2019-05-22 | 2019-09-20 | 南京航空航天大学 | Solar energy humid air turbine water-electricity cogeneration system and its working method |
| CN112922687A (en) * | 2021-02-01 | 2021-06-08 | 房盼盼 | Satellite-to-people circulation system for seawater temperature difference power generation device |
-
1990
- 1990-07-11 CN CN90104680A patent/CN1049643A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337929C (en) * | 2003-01-21 | 2007-09-19 | 张文知 | Method and equipment for desalting seawater and bitter by using ass natural energy |
| WO2012070055A1 (en) * | 2010-11-24 | 2012-05-31 | Ebenezer Muthunayagam Abraham | Process, system and configuration for integrated ocean energy cum desalination system |
| CN103206275A (en) * | 2012-09-19 | 2013-07-17 | 广西南宁市派宇能源科技开发有限公司 | Light, heat and electricity converting device |
| CN102975843A (en) * | 2012-11-13 | 2013-03-20 | 浙江海洋学院 | Tail gas surplus heat utilization device for large-scale marine main engine |
| CN103089356A (en) * | 2013-01-22 | 2013-05-08 | 中国科学院广州能源研究所 | Flash evaporation-double work medium combined power generation device |
| CN110259654A (en) * | 2019-05-22 | 2019-09-20 | 南京航空航天大学 | Solar energy humid air turbine water-electricity cogeneration system and its working method |
| CN112922687A (en) * | 2021-02-01 | 2021-06-08 | 房盼盼 | Satellite-to-people circulation system for seawater temperature difference power generation device |
| CN112922687B (en) * | 2021-02-01 | 2022-08-02 | 房盼盼 | Energy-saving circulating system for seawater temperature difference power generation device |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |