JPS5833594A - Compound energy conservation type equipment for liquefied-gas ship - Google Patents
Compound energy conservation type equipment for liquefied-gas shipInfo
- Publication number
- JPS5833594A JPS5833594A JP13074081A JP13074081A JPS5833594A JP S5833594 A JPS5833594 A JP S5833594A JP 13074081 A JP13074081 A JP 13074081A JP 13074081 A JP13074081 A JP 13074081A JP S5833594 A JPS5833594 A JP S5833594A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- boil
- boiler
- liquefied
- turbine
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、液化天然ガス等の可燃性液化ガスを運搬する
船舶において、液化ガスタンクにおけるボイルオフガス
を有効に処理し、省エネルギーをはかるようにした設備
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to equipment that effectively processes boil-off gas in a liquefied gas tank and saves energy in a ship that transports flammable liquefied gas such as liquefied natural gas.
従来の液化ガス運搬船の推進システムは、航行時に発生
するボイルオフガスを推進用燃料として使用する観点よ
り、第１図に示すように蒸気タービン駆動方式が採用さ
れている。Conventional propulsion systems for liquefied gas carriers employ a steam turbine drive system, as shown in FIG. 1, from the perspective of using boil-off gas generated during navigation as propulsion fuel.
液化ガスタンクａ内の液化ガスは、外部からの熱の侵入
により１日当たり全液化ガスタンク容積の０２５％相当
だけ気化するとされているが、このように気化したボイ
ルオフガスは、フィードコンプレッサ１）によりボイラ
Ｃの燃焼器へ送られ、この燃焼器で燃焼される。It is said that the liquefied gas in the liquefied gas tank a is vaporized by the equivalent of 0.25% of the total liquefied gas tank volume per day due to the intrusion of heat from the outside.The boil-off gas vaporized in this way is transferred to the boiler C by the feed compressor 1). The fuel is sent to the combustor, where it is burned.
そして、ボイラＣで発生した高圧蒸気は、蒸気管ｄを通
って高圧タービンＣおよび低圧タービンｒへ送られて、
両タービンの駆動に使用され、これにより推進器ｐが回
転駆動される。The high-pressure steam generated in the boiler C is sent to the high-pressure turbine C and the low-pressure turbine r through the steam pipe d.
It is used to drive both turbines, thereby rotationally driving the thruster p.
−またボイラＣで発」二した蒸気の一部が蒸気管ｄ′を
介しターボ発電機タービンＧＴへ送うれ、これにより駆
動される発電機Ｇによって船内の必要電力が賄われるよ
うになっている。なお、第１図中の符号ｇは遮断器、１
］は母線、Ｊ、１（はそねぞれ凝縮器を示し、Ｐはポン
プ、ＲＧは減速歯車を示す。- Also, a part of the steam generated by the boiler C is sent to the turbo generator turbine GT via the steam pipe d', and the generator G driven by this is used to supply the necessary electric power in the ship. . In addition, the symbol g in FIG. 1 is a circuit breaker, 1
] indicates the bus bar, J and 1 (each indicates a condenser, P indicates a pump, and RG indicates a reduction gear.
ところで、最近、液化天然ガスの価格の高騰化が激しく
なっており、オだ蒸気タービン駆動は熱効率が悪くて、
その全体効率は３０チ程度であり、燃料消費量が非常に
多くなるほか、運航状況によってはボイルオフガスの一
部を液化ガスタンク保護（ｊＴ：、力制御）のため大気
中へ放出する必要があり、これらはすべて省エネルギー
の観点からみて好捷しくないという問題点がある。By the way, recently, the price of liquefied natural gas has been rapidly increasing, and the thermal efficiency of Oda steam turbine drive is poor.
The overall efficiency is about 30 cm, which means that the fuel consumption is very high, and depending on the operational situation, it may be necessary to release some of the boil-off gas into the atmosphere to protect the liquefied gas tank (jT: power control). However, all of these methods have the problem of being unsatisfactory from the viewpoint of energy conservation.
本発明は、このような問題点の解決をはかろうとするも
σ）で、液化ガス運搬船のトータルシステノ・とＩ７て
の省エネルギーを達成できろように、主機関として蒸気
タービン駆動方式に比べ１５〜２０倍はど熱効率が優れ
ているディーゼルエンジンを搭載し、価格の高い液化ノ
ノスにできるだけ消費することｔｃ＜商品とし７て陸揚
げできるようにしながら、しかも液化ガスタンクに生じ
るボイルオフガスを適切に処Ｐ１１シて、複合的に省エ
ネルギーな附かった設（１ｉｉｉを提供丁イ）にとを目
的とする。The present invention is an attempt to solve these problems, and in order to achieve total system energy savings for liquefied gas carriers, it is possible to achieve total system energy savings for liquefied gas carriers. Equipped with a diesel engine that is 15 to 20 times more thermally efficient, it is necessary to consume as much as possible in the expensive liquefied gas tank. The purpose of P11 is to provide a comprehensive energy-saving attached installation (1iii).
このため本発明の設備は、可燃１’ｌ液化カスを運搬す
る船舶において、−４二機関と１．てのディーゼルエン
ジンをそなえ、液化ガスタンクからのボイルオフガスを
再液化するボイルオフガス１耳液化装置と、このボイル
オフガス再液化装置を作動させるためのボイルオフガス
専焼式ガスタービンとが設けられ、上記ディーゼルエン
ジンと上記ガスタービンとから導かれた高温の１：１１
ガスを利用する排ガスボイラが設けられろとともに、こ
の排ガスボイラで発生した蒸気で駆動されろターボ発電
装置が設けられ、かつ、−１−肥液化ガスタンクからボ
イルオフガスを２．９″かれイ）燃焼器をそなえた補助
ボイラが、十記排ガノボイラから−ｌ二記ターボ発電装
置へ供給されイ）蒸気の予熱系として設けられたことを
特徴としている。For this reason, the equipment of the present invention can be used in ships transporting flammable 1'l liquefied waste with two -4 engines and one engine. The diesel engine is equipped with a boil-off gas liquefaction device for re-liquefying boil-off gas from a liquefied gas tank, and a boil-off gas-only combustion type gas turbine for operating the boil-off gas re-liquefaction device. and the high temperature 1:11 derived from the above gas turbine.
An exhaust gas boiler that utilizes gas is provided, and a turbo power generator driven by the steam generated by the exhaust gas boiler is provided, and -1- 2.9" of boil-off gas from the fertilizer liquefied gas tank is burned. The auxiliary boiler equipped with a boiler is supplied from the exhaust gas boiler to the turbo generator (1) and (2) and is provided as a steam preheating system.
以下、図面により本発明の一実施例としての液化ガス運
搬船の複合省エネルギー型設備について説明すると、第
２図はその系統図であり、液化天然ガスを運搬する船舶
において、主機関と（〜て重油専焼式低速型ディーゼル
エンジン１が設けられ、その動力が推進軸２を介しプロ
ペラ３へ伝達されるようになっている。Below, we will explain the complex energy-saving equipment for a liquefied gas carrier as an embodiment of the present invention with reference to the drawings. Figure 2 is a system diagram of the system. A dedicated low-speed diesel engine 1 is provided, and its power is transmitted to a propeller 3 via a propulsion shaft 2.
斗だ船内の液化ガスタンク４で生じたボイルオフガスを
コールドボックス５ａおよびコンプレッサー５１１によ
り再液化できるようにしたボイルオフガス１耳液化装置
５が設けられるとともに、そのコンプレッサー５１．）
を作動させるためのボイルオフガス専焼式ガスタービン
６が設けられている。そして、ボイルオフガス再液化装
置Ｒ５のコールドボックス５ａで生じた液化ガスは、液
化ガスタンク４へ戻される。A boil-off gas liquefaction device 5 is provided which is capable of re-liquefying the boil-off gas generated in the liquefied gas tank 4 inside the Douda ship using a cold box 5a and a compressor 511, and the compressor 51. )
A boil-off gas-only gas turbine 6 is provided for operating the boil-off gas. Then, the liquefied gas generated in the cold box 5a of the boil-off gas reliquefaction device R5 is returned to the liquefied gas tank 4.
ディーゼルエンジン１およびガスタービン６ ″ノ各拮
カスは、その高温を利用するため１Ｊ［ガス管Ｉｓ、ｆ
ｉｎを通じ４−Ｊｌガスボイラ７へ導かれるようになっ
ており、この排ガスボイラ７で発生した蒸気で１駆動さ
れろターボ発電装置８が設けられている。Each of the diesel engine 1 and the gas turbine 6'' has 1J [gas pipes Is, f
The exhaust gas is led to a 4-Jl gas boiler 7 through the exhaust gas boiler 7, and a turbo power generator 8 is provided which is driven by the steam generated in the exhaust gas boiler 7.
さらに、液化ガスタンク・１からボイルオフガスを導か
れる燃焼器９をそなえた補助ボイラ１０が設けられ、こ
の補助ボイラ１０け排ガスボイラ７からターボ発電装置
８のタービン８；１へ供給される蒸気の予熱系として配
設されている。Furthermore, an auxiliary boiler 10 equipped with a combustor 9 to which boil-off gas is introduced from the liquefied gas tank 1 is provided, and this auxiliary boiler 10 preheats steam supplied from the exhaust gas boiler 7 to the turbine 8 of the turbo generator 8; It is arranged as a system.
なお、ガスタービン６へ導かれる燃ネ′−１の加熱器６
ａおよび補助ボイラ１０の燃焼器９へ導かれる燃料の加
熱器９ａにおいて、それぞれ燃ｔ１を加熱するために、
ディーゼルエンジン１のウォータージャケラ） ｉ ａ
から高温水を各加熱器６ａ 、９ａへ循環させるための
ジャケット水配管１１が設けられている。In addition, the heater 6 of the combustion engine 1 guided to the gas turbine 6
a and the heater 9a of the fuel guided to the combustor 9 of the auxiliary boiler 10, in order to heat the fuel t1, respectively,
Water jacket of diesel engine 1) i a
A jacket water pipe 11 is provided for circulating high temperature water from the heater to each heater 6a, 9a.
ターボ発電装置８０発電機８１〕で生じた電力は、遮断
器１２を介し四線１３へ導かれて、船内の所要個所へ供
給されるが、その余剰電力は遮断器Ｉ４を介し４１１−
、進１１Ｑｔ＋加勢川モーター１５へ供給され、その動
力が減速歯車１６を介し推Ｚ（１＋１１２へ伝′Ｊ幸さ
れるＪ二うになっている。The electric power generated by the turbo power generation device 80 generator 81 is led to the four wire 13 via the circuit breaker 12 and supplied to the required locations in the ship, but the surplus power is transferred to the four wires 13 through the circuit breaker I4.
, 11Qt + Kasegawa motor 15, and its power is transmitted to thrust Z(1+112) via reduction gear 16.
−づだ液化ガスタンク４で生じたボイルオフガスｉｔ、
冷房用機器１７．冷蔵庫１８や、その他の機器１０にも
利ＪＴ’ｌされる。- Boil-off gas it generated in the liquefied gas tank 4,
Cooling equipment 17. It is also useful for the refrigerator 18 and other equipment 10.
なお第２図中の符号２ｏはフイードコンブレツザ−１２
１は給水ポンプ、２２け復水器を示す。In addition, the code 2o in Fig. 2 is the feed combinator 12.
1 indicates a water supply pump and a 22-piece condenser.
上ｉ４の構成により、この船舶の主機関としてＩｒＪ、
効率のＪ：い重油専焼式のディーゼルエンジン１が用い
られ、液化ガスタンク４で生じたボイルオフガスは、再
液化装置５て再液化されて、できるだけ液化ガスタンク
４へ戻されるように配慮されるが、再液化装置５のコン
プレッサー！’ｉ １）Ｉｄ’、、ボイルオフガス専焼
式ガスタービン６で駆動されるので、他の燃料を必要と
せず、丑たこのガスタービン６と主機関としてのテイー
セルエンジン１との排ガスを利用する排ガスボイラ７が
設けられて、その発生蒸気で作動するターボ発電装置８
からの電力が、船内の所要個所へ供給されるほか、必要
に応じて推進軸加勢用モーター１５へも供給されるので
、全体どして効率よくボイルオフガスの利用がｉ１７上
がられるのである。With the configuration of i4 above, IrJ,
Efficiency J: A diesel engine 1 that burns only heavy oil is used, and care is taken to ensure that the boil-off gas generated in the liquefied gas tank 4 is reliquefied in the reliquefaction device 5 and returned to the liquefied gas tank 4 as much as possible. Compressor of reliquefaction equipment 5! 'i 1) Id', Since it is driven by the boil-off gas-only gas turbine 6, no other fuel is required, and the exhaust gas from the oxtail gas turbine 6 and the TASEL engine 1 as the main engine is used. A turbo power generation device 8 that is provided with an exhaust gas boiler 7 and operates with the steam generated by the exhaust gas boiler 7.
In addition to being supplied to the required locations within the ship, the power is also supplied to the propulsion shaft assisting motor 15 as needed, so that the overall use of boil-off gas can be increased efficiently.
寸だ本発明の設備では、ボイルオフガスを導かれる燃焼
器９をすなえた補助ボイラ１ｏが設けられ、ターボ発電
装置８のタービン８ａから排出された流体が、排ガスボ
イラ７で−たん加熱されたのち、補助ボイラ１０を経由
しｒｃがら気水分離と加熱とを行なわれ、ついで再び排
ガスボイラ７で加熱されて、過熱蒸気どしてタービン８
ａへ供給されるようになっており、このよってして、ボ
イルオフガスを利用する補助ボイラ１０が排ガスボイラ
７がらターボ発電装置８へ供給される蒸気の予熱系とな
っているので、設備全体としての効率が一層高められる
のである。In the equipment of the present invention, an auxiliary boiler 1o including a combustor 9 to which boil-off gas is introduced is provided, and the fluid discharged from the turbine 8a of the turbo generator 8 is heated in the exhaust gas boiler 7. Afterwards, steam and water are separated and heated in the RC via the auxiliary boiler 10, then heated again in the exhaust gas boiler 7, and superheated steam is sent to the turbine 8.
Therefore, the auxiliary boiler 10 that uses boil-off gas serves as a preheating system for the steam that is supplied from the exhaust gas boiler 7 to the turbo generator 8, so that the overall equipment The efficiency of this will be further increased.
以上詳述したＪ：つに、本発明の設備によれば、液化カ
ス運搬船の液化ガスタンクで生じろボイルオフガスの処
理が、きわめて効率よく行なわれ、しかもボイルオフガ
スを処理する各機器相互間の連係作用により、理想的な
複合省エネルギー型システムを実現することができる。According to the equipment of the present invention described in detail above, the boil-off gas generated in the liquefied gas tank of the liquefied waste carrier can be processed extremely efficiently, and furthermore, the equipment for processing the boil-off gas can be interconnected. Through this action, an ideal complex energy-saving system can be realized.
第１図は従来の液化ガス運搬船におけるボイルオフガス
処理設備を示す系統図であり、第２図は本発明による液
化ガス運搬船の複合省エネルギー型設備を示す系統図で
ある。
１・・重油専焼式低速型ディーセルエンジン、１Ｆ）・
・ウォータージャケット、ＩＳ・・排ガス管、２・・推
進１１＋、３・・プロペラ、４・・液化ガスタンク、５
・・ボイルオフガス再液化装置、５ａ・・コールドボツ
クヌ、５１）・・コンプレッサー、６・・ボイルオフガ
ス専焼式ガスタービン、６ａ・・加熱器、６Ｓ・・排カ
ス管、７・・排ガスボイラ、８・・ターボ発電装置、８
ａ−＠タービン、８１）・・発電機、９・・燃焼器、９
ａ・・加熱器、１０・・補助ボイラ、１１・・ジャケッ
ト水配管、１２・・遮断器、１３・・ｆυ線、１４・・
遮断器、１５・・］１１進１１Ｑｌ加勢用モーター、１
６・・減速歯車、１７・・冷房用機４ｉ、＋８ ・・冷
蔵庫、１９・・その他の機器、２０−・・フィー ドコ
ンゾレッザー、２１響−給水ポンプ、２２−・復水器。
復代理人 弁理士 飯 沼 義 彦
第１図
ｄ
ＲＣｒ ｅ
１）開■：３５８−３３５９４ （４）Ｃ
丁FIG. 1 is a system diagram showing boil-off gas processing equipment in a conventional liquefied gas carrier, and FIG. 2 is a system diagram showing a complex energy-saving equipment for a liquefied gas carrier according to the present invention. 1.・Heavy oil-only combustion type low-speed diesel engine, 1F)・
・Water jacket, IS・・Exhaust gas pipe, 2・・Propulsion 11+, 3・・Propeller, 4・・Liquid gas tank, 5
... Boil-off gas reliquefaction device, 5a.. Cold Botsukunu, 51).. Compressor, 6.. Boil-off gas dedicated gas turbine, 6a.. Heater, 6S.. Exhaust gas pipe, 7.. Exhaust gas boiler. 8...Turbo generator, 8
a-@Turbine, 81)... Generator, 9... Combustor, 9
a... Heater, 10... Auxiliary boiler, 11... Jacket water piping, 12... Circuit breaker, 13... fυ line, 14...
Circuit breaker, 15...] Decimal 11Ql boost motor, 1
6. Reduction gear, 17. Cooling machine 4i, +8.. Refrigerator, 19.. Other equipment, 20.. Feed consolerator, 21. Hibiki - Water supply pump, 22.. Condenser. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 1 d RCr 1) Open ■: 358-33594 (4) C Ding
Claims (1)
のディーゼルエンジンをそなえ、液化ガスタンクからの
ボイルオフガスを再液化するボイルオフガス再液化装置
と、このボイルオフガス再液化装置を作動させるための
ボイルオフガス専焼式ガクタービンとが設けられ、上記
ディーゼルエンジンと上記ガスタービンとから導かれた
高温の排ガスを利用する排ガスボイラが設けられるとと
もに、この排ガスボイラで発生した蒸気で駆動されるタ
ーボ発電装置が設けられ、かつ、−に配液化ガスタンク
からボイルオフガスを導かれる燃焼器をそなえた補助ボ
イラが、」−記排ガスポイラから上記ターボ発電装置へ
供給される蒸気の予熱系として設けられたことを特徴と
する、液化ガス運搬船の複合省エネルギー型設備。Vessels that transport flammable liquefied gas are equipped with a diesel engine as the main engine, and a boil-off gas reliquefaction device that reliquefies boil-off gas from a liquefied gas tank, and a dedicated boil-off gas combustion system to operate this boil-off gas reliquefaction device. an exhaust gas boiler that utilizes high-temperature exhaust gas led from the diesel engine and the gas turbine, and a turbo power generator driven by steam generated by the exhaust gas boiler. , and an auxiliary boiler equipped with a combustor to which boil-off gas is introduced from the liquid distribution gas tank is provided as a preheating system for steam supplied from the exhaust gas spoiler to the turbo power generation device. , complex energy-saving equipment for liquefied gas carriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13074081A JPS5833594A (en) | 1981-08-20 | 1981-08-20 | Compound energy conservation type equipment for liquefied-gas ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13074081A JPS5833594A (en) | 1981-08-20 | 1981-08-20 | Compound energy conservation type equipment for liquefied-gas ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5833594A true JPS5833594A (en) | 1983-02-26 |
Family
ID=15041489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13074081A Pending JPS5833594A (en) | 1981-08-20 | 1981-08-20 | Compound energy conservation type equipment for liquefied-gas ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833594A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100489804B1 (en) * | 2002-11-28 | 2005-05-16 | 대우조선해양 주식회사 | A system of management for B.O.G in LNG carrier |
| KR100489805B1 (en) * | 2002-11-28 | 2005-05-16 | 대우조선해양 주식회사 | A system of management for B.O.G in LNG carrier |
| KR100489806B1 (en) * | 2002-11-28 | 2005-05-17 | 대우조선해양 주식회사 | Boil off gas management apparatus and method of LNG carrier of an electric thrust system |
| KR100647919B1 (en) | 2005-09-15 | 2006-11-23 | 대우조선해양 주식회사 | Installation structure for operating system of lng carrier |
| KR100896928B1 (en) | 2007-08-30 | 2009-05-14 | 대우조선해양 주식회사 | Apparatus for treating boil-off gas in lng carrier |
| WO2011093591A2 (en) * | 2010-01-28 | 2011-08-04 | 에스티엑스조선해양 주식회사 | Floating lng revaporization equipment |
| KR101232311B1 (en) | 2009-09-11 | 2013-02-12 | 대우조선해양 주식회사 | Waster heat recovery system with the exhaust gas from the gas combustion unit |
| KR20170065868A (en) * | 2015-12-04 | 2017-06-14 | 대우조선해양 주식회사 | Combined Combustion System and Operating Method |
-
1981
- 1981-08-20 JP JP13074081A patent/JPS5833594A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100489804B1 (en) * | 2002-11-28 | 2005-05-16 | 대우조선해양 주식회사 | A system of management for B.O.G in LNG carrier |
| KR100489805B1 (en) * | 2002-11-28 | 2005-05-16 | 대우조선해양 주식회사 | A system of management for B.O.G in LNG carrier |
| KR100489806B1 (en) * | 2002-11-28 | 2005-05-17 | 대우조선해양 주식회사 | Boil off gas management apparatus and method of LNG carrier of an electric thrust system |
| KR100647919B1 (en) | 2005-09-15 | 2006-11-23 | 대우조선해양 주식회사 | Installation structure for operating system of lng carrier |
| KR100896928B1 (en) | 2007-08-30 | 2009-05-14 | 대우조선해양 주식회사 | Apparatus for treating boil-off gas in lng carrier |
| KR101232311B1 (en) | 2009-09-11 | 2013-02-12 | 대우조선해양 주식회사 | Waster heat recovery system with the exhaust gas from the gas combustion unit |
| WO2011093591A2 (en) * | 2010-01-28 | 2011-08-04 | 에스티엑스조선해양 주식회사 | Floating lng revaporization equipment |
| CN102192401A (en) * | 2010-01-28 | 2011-09-21 | Stx海洋造船株式会社 | Floating LNG revaporization equipment |
| WO2011093591A3 (en) * | 2010-01-28 | 2011-11-10 | 에스티엑스조선해양 주식회사 | Floating lng revaporization equipment |
| KR101121721B1 (en) * | 2010-01-28 | 2012-02-28 | 에스티엑스조선해양 주식회사 | Floating type LNG regasification unit |
| KR20170065868A (en) * | 2015-12-04 | 2017-06-14 | 대우조선해양 주식회사 | Combined Combustion System and Operating Method |
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