JPS58180707A - Effective utilization system of heat in lng ship - Google Patents
Effective utilization system of heat in lng shipInfo
- Publication number
- JPS58180707A JPS58180707A JP6255282A JP6255282A JPS58180707A JP S58180707 A JPS58180707 A JP S58180707A JP 6255282 A JP6255282 A JP 6255282A JP 6255282 A JP6255282 A JP 6255282A JP S58180707 A JPS58180707 A JP S58180707A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- condenser
- steam
- gas
- thermal medium
- 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
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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
- F01K9/003—Plants characterised by condensers arranged or modified to co-operate with the engines condenser cooling circuits
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はＬＮＧ船の熱有効利用システムに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat efficient utilization system for an LNG ship.
従来ヒの種のシステム紘、第１閣に示すように、ボイラ
１１で発生した蒸気はボイラ１１かも流出したのち分流
し、その一部の蒸気はＬＮＧ船の主機タービン１２に送
られ、そこで熱仕事をし、主機タービン１２を駆動させ
たのち、コンデンサ１６に送られ、そこで冷゛却水ポン
プ１４によってコンデン？１３に送られてくる冷却海水
と熱交換することによって復水し、又他方の蒸気は熱交
換５１５に送られそこでその熱交換器１５に送られてく
る貨物タンク（図示省略）内の液化天然ガスの気化によ
って発生したボイルオフガスと熱交換することによって
復水していた。コンデンサ１６と熱交換器１５とでそれ
ぞれ復水した水はその後金流し、給水ポンプ１６によっ
てボイラ１１に循環していた。As shown in the first part of the conventional system, the steam generated in the boiler 11 also flows out of the boiler 11 and is diverted, and some of the steam is sent to the main turbine 12 of the LNG ship, where it is heated. After doing work and driving the main turbine 12, it is sent to the condenser 16, where it is pumped to the condenser by the cooling water pump 14. The other steam is condensed by exchanging heat with the cooling seawater sent to the heat exchanger 13, and the other steam is sent to the heat exchanger 515, where the liquefied natural gas in the cargo tank (not shown) is sent to the heat exchanger 15. Condensation occurred through heat exchange with boil-off gas generated by gas vaporization. The water condensed in the condenser 16 and the heat exchanger 15 was then purified and circulated to the boiler 11 by the water supply pump 16.
熱交換器１５で蒸気と熱交換することによって加温され
たボイルオフガスはバーナ１７に送うレ、燃焼すること
によってボイラ１１に熱を供給していた、
このように従来のものはボイラ１１で発生した蒸気の一
部をボイルオフガスの加温のために熱交換器１５に送ら
れてい九から、蒸気の消費量が多くなって経済性が悪く
なると共に、コンデンサ１６に送られてくる蒸気の全て
を冷却海水のみで復水していたから、冷却海水の使用量
が多くなって冷却水ポンプ１４等が大量化し、設備費が
高価になる等の欠点を有していた。The boil-off gas heated by exchanging heat with steam in the heat exchanger 15 is sent to the burner 17, where it is combusted to supply heat to the boiler 11. Since a part of the generated steam is sent to the heat exchanger 15 to heat the boil-off gas, the amount of steam consumed increases and becomes uneconomical, and the amount of steam sent to the condenser 16 is Since all of the water was condensed using only cooling seawater, there were disadvantages such as an increase in the amount of cooling seawater used, a large number of cooling water pumps 14, etc., and an increase in equipment costs.
本発明は前記のような従来のもののもつ欠点を排除して
、熱を有効に利用することによって蒸気の消費量を少な
くすることができると共に、冷却水ポンプ等が小量化し
て設備費を安価にすることができるＬＮＧ船の熱有効利
用システムを提供することを目的とするものである。The present invention eliminates the above-mentioned drawbacks of the conventional ones, makes it possible to reduce steam consumption by effectively utilizing heat, and reduces equipment costs by reducing the amount of cooling water pumps, etc. The purpose of this project is to provide a system for effectively utilizing heat in an LNG ship.
以下、図面に基づいて本発明を説明する。Hereinafter, the present invention will be explained based on the drawings.
第２図は本発明のフローシートを示しており、ボイラ１
で発生した蒸気の一部は主機タービン２に送られ、そζ
で熱仕事をし、主機タービン２を枢動させ九のち、コン
デンす３に送られそこで復水する。この復水した水は給
水ポンプ４によってボイラ１に送られる。コンデンサ６
には冷却水ボン７’５によって冷却海水が供給されてい
る。コンデンサ６と熱交換＠６との関ＫＦｉ中間熱媒体
が循環ポンプ７によって循環されておシ、その中間熱媒
体はコンデンサ３に送られてくる蒸気が復水する際に生
じる顕熱および疑義熱の一部を回収する一方、その回収
した熱を熱交ｍｌ！６で中間熱媒体から放熱することに
よってその熱交換器６に送られてくる貨物タンク（図示
省略）内の液化天然ガスの気化によって発生したボイル
オフガスを加温している。加温したボイルオフガス紘バ
ーナ８に送られ、燃焼することによってボイラ１に熱を
供給している。Figure 2 shows the flow sheet of the present invention, and boiler 1
A part of the steam generated is sent to the main turbine 2, where it
The water performs thermal work, pivots the main turbine 2, and is then sent to the condenser 3 where it is condensed. This condensed water is sent to the boiler 1 by a water supply pump 4. capacitor 6
Cooling seawater is supplied by a cooling water bottle 7'5. The intermediate heat medium between the condenser 6 and the heat exchange @6 is circulated by the circulation pump 7, and the intermediate heat medium absorbs the sensible heat and suspicious heat generated when the steam sent to the condenser 3 condenses. While recovering some of the heat, the recovered heat is used for heat exchange ml! 6 heats the boil-off gas generated by vaporizing the liquefied natural gas in the cargo tank (not shown) that is sent to the heat exchanger 6 by dissipating heat from the intermediate heat medium. The heated boil-off gas is sent to the burner 8 and burned to supply heat to the boiler 1.
なお、前記中間熱媒体にはエチレングリコール添加不凍
液あるいはフレオン勢が使用されているっ本発明は前記
のような構成をし、コンデンサと熱交換器との間に中間
熱媒体を循環させることによってボイルオフガスを加温
しているから、蒸気の消費量は従来のものに比べて少な
くすることができると共に、蒸気がコンデンサで復水す
る際に生じる顕熱および疑義熱の一部を中間熱媒体で回
収しているから、コンデンサに送られる冷却海水の供給
量れ従来のものに比べて少なくなり、冷却水ポンプ等が
小蓋化して設備費を安価にすることができる効果を有し
ている、Incidentally, an ethylene glycol-added antifreeze or a Freon solution is used as the intermediate heat medium.The present invention has the above-described structure, and the boil-off is achieved by circulating the intermediate heat medium between the condenser and the heat exchanger. Because the gas is heated, the amount of steam consumed can be reduced compared to conventional methods, and a portion of the sensible heat and suspicious heat generated when steam condenses in the condenser is absorbed using an intermediate heat medium. Since the seawater is recovered, the amount of cooling seawater sent to the condenser is reduced compared to conventional systems, and cooling water pumps, etc. have smaller lids, which has the effect of reducing equipment costs.
第１図は従来のシステムのフローシート、第２図祉本発
Ｉｊ１１′に係る熱有効利用システムのフローシートで
ある。
１・・・ボイラ、２・−・主機タービン、６・・・コン
デンサ、６・・・熱交換器。
代理人 弁理士 木 村 三 朗FIG. 1 is a flow sheet of a conventional system, and FIG. 2 is a flow sheet of a heat efficient utilization system according to Ij11'. 1...Boiler, 2...Main turbine, 6...Condenser, 6...Heat exchanger. Agent Patent Attorney Sanro Kimura
Claims (1)
の蒸気をコンデンサで復水させ、その復水をボイラに循
環させると共に、貨物タンク内の液化天然ガスの気化に
よって発生したボイルオフガスを熱交換器で加温し′、
その加温したボイルオフガスをボイラの燃料として利用
するＬＮＧ船において、前記コンデンサと熱交換器との
間に中間熱媒体を循環させ、前記コンデンサで蒸気が復
水する際に生じる凝縮熱の一部を前記中間熱媒体で回収
する一方、その回収した熱を前記熱交換器で前記中間熱
媒体から放熱することによって前記ボイルオフガスを加
温することを特徴とするＬＮＧ船の熱有効利用システム
。After the steam generated in boiler 2 drives the drive device, the steam is condensed in a condenser, and the condensate is circulated to the boiler, and the boil-off gas generated by vaporization of liquefied natural gas in the cargo tank is heated. Heat it with an exchanger,
In an LNG ship that uses the heated boil-off gas as boiler fuel, an intermediate heat medium is circulated between the condenser and the heat exchanger, and part of the condensation heat generated when steam condenses in the condenser is absorbed. An effective heat utilization system for an LNG ship, characterized in that the boil-off gas is heated by recovering the boil-off gas with the intermediate heat medium and dissipating the recovered heat from the intermediate heat medium with the heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255282A JPS58180707A (en) | 1982-04-16 | 1982-04-16 | Effective utilization system of heat in lng ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255282A JPS58180707A (en) | 1982-04-16 | 1982-04-16 | Effective utilization system of heat in lng ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58180707A true JPS58180707A (en) | 1983-10-22 |
Family
ID=13203526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6255282A Pending JPS58180707A (en) | 1982-04-16 | 1982-04-16 | Effective utilization system of heat in lng ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58180707A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009041377A (en) * | 2007-08-06 | 2009-02-26 | Kawasaki Heavy Ind Ltd | Reheat type steam turbine |
| JP2009293211A (en) * | 2008-06-03 | 2009-12-17 | Kajima Corp | Method and structure for suppressing surfacing of turbidity |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467838A (en) * | 1977-11-10 | 1979-05-31 | Mitsui Eng & Shipbuild Co Ltd | Thermoelectric power plant by low temperature liquefied gas |
-
1982
- 1982-04-16 JP JP6255282A patent/JPS58180707A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467838A (en) * | 1977-11-10 | 1979-05-31 | Mitsui Eng & Shipbuild Co Ltd | Thermoelectric power plant by low temperature liquefied gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009041377A (en) * | 2007-08-06 | 2009-02-26 | Kawasaki Heavy Ind Ltd | Reheat type steam turbine |
| JP4674225B2 (en) * | 2007-08-06 | 2011-04-20 | 川崎重工業株式会社 | Reheat steam turbine |
| JP2009293211A (en) * | 2008-06-03 | 2009-12-17 | Kajima Corp | Method and structure for suppressing surfacing of turbidity |
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