CN102616875A - Method for performing seawater desalination by utilizing residual heat in thermal discharge of power station - Google Patents
Method for performing seawater desalination by utilizing residual heat in thermal discharge of power station Download PDFInfo
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- CN102616875A CN102616875A CN2012100998201A CN201210099820A CN102616875A CN 102616875 A CN102616875 A CN 102616875A CN 2012100998201 A CN2012100998201 A CN 2012100998201A CN 201210099820 A CN201210099820 A CN 201210099820A CN 102616875 A CN102616875 A CN 102616875A
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- power station
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The invention discloses a method for performing seawater desalination by utilizing residual heat in thermal discharge of a power station. The method comprises the following steps: firstly increasing the temperature of part of the thermal discharge of the power station to above 70 DEG C through an absorption type heat pump, then sending into a low-pressure flash evaporator, producing steam and enabling the steam to enter into a low-temperature multi-effect seawater desalination system and further producing desalinated water. According to the method disclosed by the invention, the residual heat in the thermal discharge can be recovered, and fresh water can be simultaneously prepared from seawater.
Description
Technical field
the present invention relates to the method for utilizing thermal power station or Nuclear power plants cooling system warm water discharge waste heat to carry out sea water desaltination.
Background technology
thermal power station or Nuclear power plants need a large amount of water coolants usually; Binhai Generator Station mostly with seawater as water coolant; These water coolants are used to make the vapor condensation after doing work in the power station, and the warm water discharge temperature of general cooling water outlet raises about 10 ℃ than import.In the prior art, the heat in these warm water discharges directly slatterns.
Summary of the invention
the purpose of this invention is to provide the method for utilizing power station warm water discharge waste heat to carry out sea water desaltination, have so not only reclaimed the heat of warm water discharge, have also made fresh water by seawater simultaneously.
are for achieving the above object; The present invention has adopted following technical scheme: a kind of method of utilizing power station warm water discharge waste heat to carry out sea water desaltination; Said power station warm water discharge is that the steam that seawater is discharged the power station steam turbine through condenser is carried out obtaining after the condensation, and the said method of utilizing power station warm water discharge waste heat to carry out sea water desaltination comprises: at first, be increased to more than 70 ℃ through the temperature of absorption heat pump with the said power station of part warm water discharge; Send into low pressure flash vessel then; Produce steam, this steam gets into the low-temperature multiple-effect seawater desalination system, produces desalination water.
preferably; After said part power station warm water discharge absorbs the heat intensification through interchanger earlier; Get into said absorption heat pump again, improve more than the temperature to 70 ℃, the strong brine that origin of heat is discharged in said low-temperature multiple-effect seawater desalination system in the said interchanger.
preferably, the driving heat energy of said absorption heat pump is mainly derived from said power station warm water discharge, and is replenished by the low-grade steam of from the steam turbine of said power station, extracting out.
During
practical implementation, the working range of said low pressure flash vessel is 0.01 ~ 0.025MPa.
are because the utilization of technique scheme; The present invention compared with prior art has advantage: the present invention adopts absorption heat pump to make more than the part warm water discharge temperature increase to 70 ℃; Send into low pressure flash vessel then and produce steam; This steam gets into the low-temperature multiple-effect seawater desalination system and makes desalination water, and the present invention has realized reclaiming the waste heat of warm water discharge, makes fresh water by seawater simultaneously.
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Description of drawings
accompanying drawing 1 is a synoptic diagram of the present invention.
Embodiment
Structure of the present invention is further set forth below in conjunction with accompanying drawing in
.
are referring to Fig. 1; Power station steam turbine 2 advances steam through pipeline 21, and steam turbine 2 is the rotary power machinery that the energy transformation of steam is become mechanical work, and the steam that steam turbine 2 is discharged carries out condensation in condenser 1; Water coolant comes from seawater; Seawater pumps in the condenser 1 through coolant circulation pump 7, and behind the vapor condensation that steam turbine 2 is discharged, the water temperature of output raises 10 ℃; Setting and getting into condenser 1 preceding seawater temperature is 25 ℃, and then the seawater warm water discharge temperature of condenser 1 output is 35 ℃.The part warm water discharge gets in the interchanger 6, output after heat exchange heats up, and this moment, the temperature of warm water discharge reached 44 ℃; Then warm water discharge gets in the absorption heat pump 3, low-grade steam (152 ℃ 0.3MPa) provide driving heat energy through extracting out in 35 ℃ of warm water discharges and the power station steam turbine 2 in absorption heat pump 3; 44 ℃ of warm water discharges are warming up to more than 70 ℃; Warm water discharge gets in the low pressure flash vessel 4 through pipeline 11 more than 70 ℃ then, and the working range of low pressure flash vessel 4 is 0.01 ~ 0.025MPa, and low pressure flash vessel 4 can be a saturation steam with warm water discharge seawater flash evapn; Steam then gets into low-temperature multiple-effect seawater desalination system 5, produces desalination water.Low-temperature multiple-effect seawater desalination system 5 have adapt to low pressure flash vessel 4 go out vapour parameter and mechanical type vacuum function, this low-temperature multiple-effect seawater desalination system 5 is an existing system, does not give unnecessary details at this.45 ℃ of strong brines that low-temperature multiple-effect seawater desalination system 5 discharges get in the interchanger 6, carry out heat exchange with above-mentioned part warm water discharge (35 ℃), the discharging of cooling (36 ℃) back.
The desalination water saltiness that
are produced by this patent method can reclaim the waste heat of warm water discharge below 10mg/l, and than conventional low-temperature multi-effect seawater desalination process save energy 35%.Through calculating, to producing the seawater desalination system of 50,000 tons of fresh water daily, adopt the energy of this patent method recyclable 232MW every day, amount to 28.6 tons in mark coal, practice thrift 8500 tons in mark coal year.
to sum up; The power station warm water discharge waste heat that utilizes of this patent carries out in the method for sea water desaltination, adopts heat pump to promote more than the temperature to 70 ℃ of warm water discharge, and the warm water discharge that is warming up to more than 70 ℃ gets in the low pressure flash vessel; Low pressure flash vessel is produced the steam that low-temperature multiple-effect seawater desalination needs; Can save the open steam consumption thus, when reclaiming the heat of warm water discharge effectively, realize producing fresh water by seawater.
Claims (4)
1. method of utilizing power station warm water discharge waste heat to carry out sea water desaltination; Said power station warm water discharge is that the steam that seawater is discharged the power station steam turbine through condenser is carried out obtaining after the condensation; It is characterized in that: the said method of utilizing power station warm water discharge waste heat to carry out sea water desaltination comprises: at first; Be increased to more than 70 ℃ through the temperature of absorption heat pump, send into low pressure flash vessel then, produce steam the said power station of part warm water discharge; This steam gets into the low-temperature multiple-effect seawater desalination system, produces desalination water.
2. the method for utilizing power station warm water discharge waste heat to carry out sea water desaltination according to claim 1; It is characterized in that: after said part power station warm water discharge absorbs the heat intensification through interchanger earlier; Get into said absorption heat pump again; Improve more than the temperature to 70 ℃ the strong brine that origin of heat is discharged in said low-temperature multiple-effect seawater desalination system in the said interchanger.
3. the method for utilizing power station warm water discharge waste heat to carry out sea water desaltination according to claim 1 and 2; It is characterized in that: the driving heat energy of said absorption heat pump is mainly derived from said power station warm water discharge, and is replenished by the low-grade steam of from the steam turbine of said power station, extracting out.
4. the method for utilizing power station warm water discharge waste heat to carry out sea water desaltination according to claim 1 is characterized in that: the working range of said low pressure flash vessel is 0.01 ~ 0.025MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100998201A CN102616875A (en) | 2012-04-09 | 2012-04-09 | Method for performing seawater desalination by utilizing residual heat in thermal discharge of power station |
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| CN2012100998201A CN102616875A (en) | 2012-04-09 | 2012-04-09 | Method for performing seawater desalination by utilizing residual heat in thermal discharge of power station |
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| CN2012100998201A Pending CN102616875A (en) | 2012-04-09 | 2012-04-09 | Method for performing seawater desalination by utilizing residual heat in thermal discharge of power station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN104966535A (en) * | 2015-06-26 | 2015-10-07 | 上海核工程研究设计院 | Sea water desalination and residual heat removal dual-purpose system of floating nuclear power plant |
| EP3239104A4 (en) * | 2014-12-24 | 2018-05-30 | Chang Kun Lee | Energy-saving seawater desalination system using steam generated in nuclear reactor, and method for desalinating seawater |
| CN110217848A (en) * | 2019-05-30 | 2019-09-10 | 郑州电力高等专科学校 | The seawater desalination system utilized based on Combined cycle gas-steam turbine fume afterheat |
| CN111517393A (en) * | 2020-04-02 | 2020-08-11 | 郑州电力高等专科学校 | Method for reducing temperature discharge of seawater cooling power plant |
Citations (2)
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|---|---|---|---|---|
| JPH0952083A (en) * | 1995-08-16 | 1997-02-25 | Nkk Corp | Apparatus for desalinating seawater |
| CN102358633A (en) * | 2011-06-21 | 2012-02-22 | 中国神华能源股份有限公司 | Seawater desalination system used in water-electricity cogeneration and method for desalinating seawater |
-
2012
- 2012-04-09 CN CN2012100998201A patent/CN102616875A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0952083A (en) * | 1995-08-16 | 1997-02-25 | Nkk Corp | Apparatus for desalinating seawater |
| CN102358633A (en) * | 2011-06-21 | 2012-02-22 | 中国神华能源股份有限公司 | Seawater desalination system used in water-electricity cogeneration and method for desalinating seawater |
Non-Patent Citations (2)
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| 倪龙等: "利用凝汽器循环水废热的热泵站用能分析", 《哈尔滨工业大学学报》 * |
| 张凯: "《清洁生产与循环经济丛书3：水资源循环经济理论与技术》", 31 January 2007, 科学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN103613153B (en) * | 2013-12-06 | 2015-09-02 | 上海电站辅机厂有限公司 | The system of a kind of nuclear power and low-temperature multiple-effect seawater desalination coupled cogeneration |
| EP3239104A4 (en) * | 2014-12-24 | 2018-05-30 | Chang Kun Lee | Energy-saving seawater desalination system using steam generated in nuclear reactor, and method for desalinating seawater |
| CN104966535A (en) * | 2015-06-26 | 2015-10-07 | 上海核工程研究设计院 | Sea water desalination and residual heat removal dual-purpose system of floating nuclear power plant |
| CN110217848A (en) * | 2019-05-30 | 2019-09-10 | 郑州电力高等专科学校 | The seawater desalination system utilized based on Combined cycle gas-steam turbine fume afterheat |
| CN111517393A (en) * | 2020-04-02 | 2020-08-11 | 郑州电力高等专科学校 | Method for reducing temperature discharge of seawater cooling power plant |
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Address after: The West Loop Jinchang District Suzhou city Jiangsu province 215004 No. 1788 Applicant after: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant after: China General Nuclear Power Corporation Address before: The West Loop Jinchang District Suzhou city Jiangsu province 215004 No. 1788 Applicant before: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant before: China Guangdong Nuclear Power Group Co., Ltd. |
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Application publication date: 20120801 |