JPS5832909A - Operating method of power generating facility utilizing cold thermal energy - Google Patents

Operating method of power generating facility utilizing cold thermal energy

Info

Publication number
JPS5832909A
JPS5832909A JP56130336A JP13033681A JPS5832909A JP S5832909 A JPS5832909 A JP S5832909A JP 56130336 A JP56130336 A JP 56130336A JP 13033681 A JP13033681 A JP 13033681A JP S5832909 A JPS5832909 A JP S5832909A
Authority
JP
Japan
Prior art keywords
lng
sea water
natural gas
liquefied natural
cold thermal
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
Application number
JP56130336A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamada
浩 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56130336A priority Critical patent/JPS5832909A/en
Publication of JPS5832909A publication Critical patent/JPS5832909A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F17C9/04—Recovery of thermal energy
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F17C2227/0318—Water heating using seawater
    • 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
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0325—Heat exchange with the fluid by heating by expansion using "Joule-Thompson" effect
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0631—Temperature
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

PURPOSE:To suppress variations of the cold thermal generating output and to assure the stable output by varying the temperature setting of the liquefied natural gas heat source in accordance with the composition of the liquefied natural gas in a power generating facility utilizing the liquefied natural gas cold thermal energy. CONSTITUTION:The LNG fed from an LNG tank is gasified by a heat exchanger 3, is expanded by a turbine 4, and the electric energy is recovered by an electric generator 5. The sea water is compressed by a sea water pump 6, and its temperature is controlled by a sea water temperature setting unit 8, sea water temperature detector 9, adder 10, proportional integrator 11, and thermal power plant bleed air flow control valve 12. The sea water temperature setting unit 8 is set by means of an LNG analyzer 7, thereby the sea water temperature is controlled so as to keep the cold thermal generating output constant. Accordingly, variations of the cold thermal generating output due to changes of the LNG composition can be suppressed, and the stable output can be available.

Description

【発明の詳細な説明】 本発明は、液化天然ガス（ＬＮＧと略す）冷熱エネルギ
ー利用発電設備の運転方法に係り、特にＬＮＧ組成の変
化に伴う冷熱発電出力の変動を抑え、安定した冷熱発電
出力を確保する為の運転方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a power generation facility using liquefied natural gas (abbreviated as LNG) cold energy, and in particular suppresses fluctuations in cold power generation output due to changes in LNG composition, thereby achieving stable cold power generation output. Regarding driving methods to ensure safety.

ＬＮＧは、メタンを主成分とする炭化水素の混合物で、
その組成は産地により異っている。現在わが国に導入さ
れているＬＮＧのうち、メタン含有率の最も大きいアラ
哀力産と最も小さい、アブダビ産では、燃焼による発熱
量に大差はないが、冷熱エネルギー（約−１６０℃のＬ
ＮＧが、常温のＮＧになるまでに吸収しうる熱量）につ
いては。LNG is a mixture of hydrocarbons whose main component is methane.
Its composition varies depending on the production area. Of the LNG currently being introduced into Japan, the LNG produced in Arah, which has the highest methane content, and the one produced in Abu Dhabi, which has the smallest methane content, do not have much difference in calorific value due to combustion.
Regarding the amount of heat that NG can absorb until it becomes NG at room temperature.

３割程度の差がある。There is a difference of about 30%.

従来のＬＮＧ冷熱発電設備では、ＬＮＧの加熱源、とし
て主に海水が使用されているが、加熱源の温度は制御し
ていない。この為、ＬＮＧ組成の変化により、同一流量
による冷熱発電出力に大きな差異を生じ、過出力防止等
の考慮が必要となる。In conventional LNG cryogenic power generation equipment, seawater is mainly used as a heating source for LNG, but the temperature of the heating source is not controlled. For this reason, changes in the LNG composition cause large differences in cold power generation output with the same flow rate, and it is necessary to take measures to prevent excessive output.

又、海水温度の変化（季節変化１日変化等）に伴う冷熱
発電出力の変動を、よぎなくされている０本発明の目的
は、ＬＮＧ冷熱発電設備に於て。Further, it is an object of the present invention to eliminate fluctuations in cold power generation output due to changes in seawater temperature (seasonal changes, daily changes, etc.) in LNG cold power generation equipment.

ＬＮＧ組成の変化に伴う冷熱発電出力の変動を抑え、安
定した出力を確保する為の運転方法を提供することにあ
る。The object of the present invention is to provide an operating method for suppressing fluctuations in cold power generation output due to changes in LNG composition and ensuring stable output.

本発明では、ＬＮＧ組成に応じ、同一流量のＬＮＧによ
る冷熱発電出力が一定となる様に。In the present invention, depending on the LNG composition, the cold power generation output using the same flow rate of LNG is made constant.

ＬＮＧ加熱源の温度設定を変え、加熱源の流量は一定の
ままで、温度を制御することにより、ＬＮＧ組成の変化
に伴う冷熱発電出力の変動を抑え、安定出力を確保する
。By changing the temperature setting of the LNG heating source and controlling the temperature while keeping the flow rate of the heating source constant, fluctuations in cold power generation output due to changes in LNG composition are suppressed and stable output is ensured.

以下１本発明の一実施例を図により説明する。An embodiment of the present invention will be described below with reference to the drawings.

図に於て、ＬＮＧタン“り１から供給されたＬＮＧは、
昇圧ポンプ２によって昇圧され、熱交換器３で海水と熱
交換を行い、気化した後、タービン４で膨張し発電機５
で電気エネルギーを回収する。さらにタービンで仕様を
行い温度の低下した天然ガス（以下ＮＧと略す）は、熱
交換器３で再び加熱され、火力発電所の燃料として送出
される。まだ、ＬＮＧおよびＮＧと熱交換を行う海水は
、海水ポンプ６により昇圧され近くにある火力発電所の
抽気と熱交換器３により熱交換を行い。In the figure, LNG supplied from LNG tanker 1 is
The pressure is boosted by the boost pump 2, heat exchanged with seawater in the heat exchanger 3, and after vaporization, it is expanded in the turbine 4 and generated by the generator 5.
to recover electrical energy. Furthermore, the natural gas (hereinafter abbreviated as NG) whose temperature has been reduced by the specification in the turbine is heated again in the heat exchanger 3 and sent out as fuel for a thermal power plant. The seawater that is still exchanging heat with LNG and NG is pressurized by a seawater pump 6 and exchanged heat with extracted air from a nearby thermal power plant through a heat exchanger 3.

海水温度設定器８．海水温度検出器９、加算器１０、比
例積分器１１．火力発電所抽気流量調節弁１２から成る
海水温度制御装置により、設定器１１ ８の温度に制御される。Seawater temperature setting device8. Seawater temperature detector 9, adder 10, proportional integrator 11. A seawater temperature control device comprising a thermal power plant bleed air flow control valve 12 controls the temperature to a setting device 118.

この際、海水温度は、ＬＮＧ分析器７によるＬＮＧ組成
の分析結果に基づき、同一流量のＬＮＧによる冷熱発電
出力が一定となる温度に。At this time, the seawater temperature is set to a temperature at which the cold power generation output using the same flow rate of LNG is constant, based on the analysis results of the LNG composition by the LNG analyzer 7.

海水温度設定器８を設定することにより、制御される。It is controlled by setting the seawater temperature setting device 8.

従って、ＬＮＧ組成の違い又′は変動による冷熱発電出
力変動を抑え、安定した出力を得ることが可能である。Therefore, it is possible to suppress fluctuations in cold power generation output due to variations in LNG composition and obtain stable output.

又、海水温度を制御゛している為、従来例の様な海水温
度の温度変化（季節変化１日変化等）による出力変動を
も無くすることができる。Furthermore, since the seawater temperature is controlled, it is possible to eliminate output fluctuations caused by changes in seawater temperature (seasonal changes, daily changes, etc.) as in the conventional example.

以上述べた様に、本発明によれば、ＬＮＧ組成に応じて
加熱源の温度設定を変え、加熱源の温度を制御できるの
で、ＬＮＧ組成の変化に伴う冷熱発電出力変化を抑え、
安定した出力を得ることができる。As described above, according to the present invention, it is possible to control the temperature of the heating source by changing the temperature setting of the heating source according to the LNG composition, thereby suppressing changes in cold power generation output due to changes in the LNG composition.
Stable output can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

図は１本発明によるＬＮＧ冷熱エネルギー利用発電設備
の運転方法の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of a method of operating a power generation facility using LNG cold energy according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] １、液化天然ガスタンク、タンクからの液化天然ガスを
加圧する昇圧ポンプ、昇圧した液化天然ガスを加熱源（
海水等）により気化する為の熱交換器、気化した天然ガ
スで発電を行う為のタービン発電機より成る冷熱エネル
ギー利用発電設備に於て、液化天然ガスの組成に応じて
、熱交換器の加熱源の温度を制御する事を特徴とする冷
熱エネルギー利用発電設備の運転方法。1. Liquefied natural gas tank, booster pump that pressurizes the liquefied natural gas from the tank, and pressurized liquefied natural gas as a heating source (
In cold energy power generation equipment consisting of a heat exchanger for vaporizing liquefied natural gas (seawater, etc.) and a turbine generator for generating electricity from vaporized natural gas, the heating of the heat exchanger is determined according to the composition of the liquefied natural gas. A method of operating a power generation facility using cold energy, which is characterized by controlling the temperature of a source.
JP56130336A 1981-08-21 1981-08-21 Operating method of power generating facility utilizing cold thermal energy Pending JPS5832909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56130336A JPS5832909A (en) 1981-08-21 1981-08-21 Operating method of power generating facility utilizing cold thermal energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56130336A JPS5832909A (en) 1981-08-21 1981-08-21 Operating method of power generating facility utilizing cold thermal energy

Publications (1)

Publication Number Publication Date
JPS5832909A true JPS5832909A (en) 1983-02-26

Family

ID=15031925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56130336A Pending JPS5832909A (en) 1981-08-21 1981-08-21 Operating method of power generating facility utilizing cold thermal energy

Country Status (1)

Country Link
JP (1) JPS5832909A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103328878A (en) * 2010-12-30 2013-09-25 三星物产株式会社 Facilities for offshore liquefied natural gas floating storage with jack-up platform regasification unit
JP2014173724A (en) * 2013-03-06 2014-09-22 Hyundai Heavy Industries Co Ltd Lng fuel feed system
CN112254561A (en) * 2020-10-19 2021-01-22 中国科学院理化技术研究所 Liquid air energy storage system utilizing LNG cold energy and fuel gas peak shaving power generation waste heat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103328878A (en) * 2010-12-30 2013-09-25 三星物产株式会社 Facilities for offshore liquefied natural gas floating storage with jack-up platform regasification unit
US9039332B2 (en) 2010-12-30 2015-05-26 Samsung C&T Corporation Facilities for offshore liquefied natural gas floating storage with jack-up platform regasification unit
JP2014173724A (en) * 2013-03-06 2014-09-22 Hyundai Heavy Industries Co Ltd Lng fuel feed system
CN112254561A (en) * 2020-10-19 2021-01-22 中国科学院理化技术研究所 Liquid air energy storage system utilizing LNG cold energy and fuel gas peak shaving power generation waste heat

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