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WO2021117969A1 - Système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée - Google Patents

Système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée Download PDF

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Publication number
WO2021117969A1
WO2021117969A1 PCT/KR2019/018695 KR2019018695W WO2021117969A1 WO 2021117969 A1 WO2021117969 A1 WO 2021117969A1 KR 2019018695 W KR2019018695 W KR 2019018695W WO 2021117969 A1 WO2021117969 A1 WO 2021117969A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat source
lng
evaporator
steam
Prior art date
Application number
PCT/KR2019/018695
Other languages
English (en)
Korean (ko)
Inventor
김현주
이호생
문덕수
임승택
김영석
문정현
서종범
Original Assignee
한국해양과학기술원
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 한국해양과학기술원 filed Critical 한국해양과학기술원
Publication of WO2021117969A1 publication Critical patent/WO2021117969A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/04—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled condensation heat from one cycle heating the fluid in another cycle
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • 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

Definitions

  • the present invention uses sea surface water, hot water from a power plant, solar heat, etc. to evaporate moisture in seawater under reduced pressure in an evaporator, operate a turbine using the vaporized vapor under reduced pressure to generate electricity, and also convert the water vapor discharged from the turbine into LNG in a condenser. It relates to a power generation-fresh water complex system using unutilized heat that enables the production of fresh water by condensing it using cold heat.
  • the pressure difference between the inlet and outlet of the turbine in the conventional temperature differential power generation system is at the level of evaporation and condensing pressure due to the low temperature difference between surface water and deep water, and since it is a cycle with only simple basic components, the power generation efficiency is different from other power generation methods. low level compared to
  • the present invention is a means for solving the above problems
  • the present invention supplies LNG to the place of use after vaporization at the LNG terminal, and at this time, as seawater is used as heat of vaporization, marine environmental problems (such as problems with cold drainage in the surrounding sea area) caused by the discharge of seawater having a lower temperature are prevented. It works.
  • the present invention has the effect of being able to produce fresh water without separate deep sea water intake in terms of the complex system, and reducing the problem of cold drainage in terms of LNG.
  • FIG. 1 is a configuration diagram of an embodiment showing a power generation using unutilized heat according to the present invention - desalination complex system.
  • the present invention has the following features.
  • a heat source unit 10 for supplying a heat source; an evaporator 20 for evaporating seawater flowing into and discharged from the inside, receiving an evaporation heat source from the heat source unit 10, and evaporating the seawater flowing into the evaporator 20 under reduced pressure to form water vapor; a turbine-generator 30 for generating electric power using the steam evaporated under reduced pressure of the evaporator 20; a condenser 40 through which the steam passing through the turbine-generator 30 passes, receiving cooling heat used in the LNG terminal 50, and condensing the steam into a liquid phase to produce and discharge fresh water; It is characterized in that it comprises a.
  • the heat source unit 10 is characterized in that any one or two or more of sea surface water, solar heat, and power plant hot water is used as an evaporation heat source.
  • LNG itself is used as the cooling and heating furnace of the LNG terminal 50, and when the LNG is used as cooling heat, the steam exchanges heat with the LNG cooling heat and vaporizes the heat of vaporization required for use by vaporizing from a liquid phase to a gas phase. It is characterized in that it is made available from
  • Power generation using unutilized heat according to the present invention - the fresh water composite system includes a heat source unit 10, an evaporator 20, a turbine-generator 30, and a condenser 40.
  • the heat source part 10 is a part for supplying a heat source to the evaporator 20 to be described later, and any one or two or more of sea surface water, solar heat, and power plant hot wastewater may be used as an evaporation heat source in combination.
  • the evaporator 20 is a part of the evaporator 20, the seawater flows in and discharged therein, receives the evaporative heat source from the heat source unit 10, evaporates the seawater flowing into the evaporator 20 under reduced pressure to form water vapor.
  • the turbine-generator 30 is a part that generates electric power by using the steam evaporated under reduced pressure of the evaporator 20 .
  • the condenser 40 passes through the above-described turbine-generator 30 and is a part through which steam discharged after operating the turbine-generator 30 passes, and receives the cooling heat used in the LNG terminal 50 to convert the steam It is a part that condenses into a liquid phase to produce fresh water and discharge it.
  • LNG in addition to deep sea water of 5° C. or less, LNG itself may be used.
  • the sea surface water (2) is supplied to the evaporator 20, but hot water from a power plant or solar heat (3) is available to secure a higher heat source.
  • a predetermined amount of a heat source is circulated to the evaporator 20 by a circulating water pump and used as an evaporation heat source of the evaporator 20 .
  • water in the seawater is evaporated under reduced pressure by an evaporation heat source to become water vapor, and then flows into the turbine-generator 30 (4) to produce electric power.
  • the steam (5) discharged after operation of the turbine-generator 30 is supplied to the condenser 40, (6), and the liquid LNG is supplied from the condenser 40 (7), and the heat of vaporization when the liquid is vaporized into a gaseous phase (7) is supplied from the steam discharged from the turbine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

La présente invention concerne un système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée et, plus spécifiquement, un système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée, de l'eau de mer de surface, des effluents thermiques issus de centrales électriques et de la chaleur solaire étant utilisés comme sources de chaleur d'évaporation pour évaporer l'eau de mer à l'aide d'un évaporateur. La vapeur générée au moyen de ce procédé est utilisée pour générer de l'énergie par l'intermédiaire d'un turbogénérateur et la vapeur évacuée après utilisation pour la génération d'énergie est générée dans de l'eau dessalée par échange de chaleur avec du GNL.
PCT/KR2019/018695 2019-12-10 2019-12-30 Système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée WO2021117969A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190163295A KR20210073627A (ko) 2019-12-10 2019-12-10 미활용열 이용 발전-담수 복합시스템
KR10-2019-0163295 2019-12-10

Publications (1)

Publication Number Publication Date
WO2021117969A1 true WO2021117969A1 (fr) 2021-06-17

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PCT/KR2019/018695 WO2021117969A1 (fr) 2019-12-10 2019-12-30 Système combiné d'alimentation et de dessalement utilisant de la chaleur inutilisée

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KR (1) KR20210073627A (fr)
WO (1) WO2021117969A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034027A (zh) * 2021-10-22 2022-02-11 深圳润德工程有限公司 一种光伏协同温排水降温系统及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102621504B1 (ko) 2021-12-27 2024-01-09 한재민 Tepg를 이용한 발전 및 담수화 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405503A (en) * 1993-11-05 1995-04-11 Simpson; Gary D. Process for desalinating water while producing power
JPH0971790A (ja) * 1995-09-05 1997-03-18 Nkk Corp Ｌｎｇ気化装置
KR20000016790A (ko) * 1996-06-19 2000-03-25 하루키 사토 담수장치 및 그 작동법
JP2007309295A (ja) * 2006-05-22 2007-11-29 Toshiba Corp 淡水化発電プラント
KR20140136329A (ko) * 2013-05-20 2014-11-28 한국과학기술원 해양온도차발전 시스템 및 그 작동방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101110695B1 (ko) 2010-01-08 2012-02-24 한국해양대학교 산학협력단 선박용 해수 온도차 발전 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405503A (en) * 1993-11-05 1995-04-11 Simpson; Gary D. Process for desalinating water while producing power
JPH0971790A (ja) * 1995-09-05 1997-03-18 Nkk Corp Ｌｎｇ気化装置
KR20000016790A (ko) * 1996-06-19 2000-03-25 하루키 사토 담수장치 및 그 작동법
JP2007309295A (ja) * 2006-05-22 2007-11-29 Toshiba Corp 淡水化発電プラント
KR20140136329A (ko) * 2013-05-20 2014-11-28 한국과학기술원 해양온도차발전 시스템 및 그 작동방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034027A (zh) * 2021-10-22 2022-02-11 深圳润德工程有限公司 一种光伏协同温排水降温系统及方法
CN114034027B (zh) * 2021-10-22 2024-04-09 深圳润德工程有限公司 一种光伏协同温排水降温系统及方法

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