EP0885365B1 - Method in the utilization of boil-off from liquid gas and apparatus for carrying out the method - Google Patents
Method in the utilization of boil-off from liquid gas and apparatus for carrying out the method Download PDFInfo
- Publication number
- EP0885365B1 EP0885365B1 EP97914662A EP97914662A EP0885365B1 EP 0885365 B1 EP0885365 B1 EP 0885365B1 EP 97914662 A EP97914662 A EP 97914662A EP 97914662 A EP97914662 A EP 97914662A EP 0885365 B1 EP0885365 B1 EP 0885365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boil
- gas
- heat exchanger
- flow
- draw
- 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.)
- Expired - Lifetime
Links
Images
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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/06—Steering by rudders
- B63H25/08—Steering gear
- B63H25/12—Steering gear with fluid transmission
-
- 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
-
- 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
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- 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
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0157—Compressors
-
- 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
- F17C2227/0306—Heat exchange with the fluid by heating using the same fluid
-
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/03—Treating the boil-off
-
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/03—Treating the boil-off
- F17C2265/032—Treating the boil-off by recovery
- F17C2265/037—Treating the boil-off by recovery with pressurising
-
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/066—Fluid distribution for feeding engines for propulsion
-
- 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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
Definitions
- the invention also relates to a plant for carrying out said method, wherein boil-off and vaporised liquefied gas are transported together to a consumer, comprising a storage tank for liquefied gas, a draw-off line for boil-off from the storage tank, a pump with attached draw-off line for liquefied gas from the storage tank, and a combined heat exchanger having two separate flow banks in a common surrounding shell, where one bank is connected to the draw-off line for liquefied gas for vaporisation thereof and the other bank is connected to the draw-off line for boil-off, which banks open into a common mixing chamber, which is connected to a flowline leading to the consumer.
- the objective of the present invention is to provide a method and a plant as mentioned by way of introduction, wherein the advantages of the prior art from WO 94 17 325 are retained, whilst simplifying the plant even further.
- the compressor By placing the compressor in the boil-off line upstream of the heat exchanger, the compressor only needs to carry the boil-off volume and not the total volume of gas.
- the compressor will have to be constructed to work with gas at temperatures as low as - 140°C when LNG is involved, but this disadvantage will be more than compensated for by the advantages obtained, namely that the compressor in terms of size will be more compact, have reduced power requirements, a smaller working area and simpler capacity control.
- An additional advantage is that the combined heat exchanger will be capable of being dimensioned for a higher pressure drop, which will result in reduced shell dimensions and lower production costs. It is thus only the choice of material for the compressor which tends to be unfavourable, but as mentioned this disadvantage is cancelled out as a result of the compressor being made more compact.
- the reference numeral 1 denotes a storage tank for liquefied gas, for example, an LNG tank on board a LNG ship.
- a storage tank for liquefied gas for example, an LNG tank on board a LNG ship.
- boil-off will be produced.
- This accumulates in the dome 2 of the storage tank 1 and can be withdrawn through a boil-off draw-off line 3.
- This draw-off line 3 runs to a compressor 4.
- the boil-off is compressed, with attendant rise in temperature. From the compressor, the compressed boil-off passes to a combined heat exchanger 9.
- the boil-off is used as fuel gas in the propulsion engine of the ship.
- the plant is such that if the boil-off is not sufficient, i.e., larger amounts of fuel gas are required than the boil-off can supply, liquefied natural gas is withdrawn with the aid of a pump 11, and led through a draw-off line 10 to the combined heat exchanger 9.
- the combined heat exchanger 9 has separate flow banks 7 and 8 for liquefied gas and boil-off, respectively.
- the liquefied gas and the boil-off are heat exchanged with an external hot flow, indicated by mean of the arrow in the figure. This flow, which in most cases will be vapour, is conducted from the shell side of the heat exchanger.
- the two gas flows are accumulated in the mixing chamber 6 and thence pass through a flowline 5 to a non-illustrated consumer, e.g., to a burner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Treating Waste Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Fertilizers (AREA)
Abstract
Description
Claims (2)
- A method for utilising boil-off from liquified gas as fuel gas in combination with gas produced by vaporising the liquified gas, wherein the boil-off is passed to heat exchange with an external hot medium flow together with the liquified gas, said boil-off and said liquified gas vaporised during said heat exhange thereafter being mixed to form fuel gas, characterised in that the bail-off is compressed before being heated and mixed with the vaporised liquefied gas.
- A plant for carrying out the method according to claim 1, wherein boil-off and vaporised liquefied gas are transported together to a consumer, comprising a storage tank (1) for liquefied gas, a draw-off line (3) for boil-off from the storage tank (1), a pump (11) with draw-off line (10) attached thereto for liquefied gas from the storage tank (1), and a combined heat exchanger (9) having two separate flow banks (7, 8) in a common surrounding shell, where one flow bank (7) is connected to the liquefied gas draw-off line (10) and the second flow-through unit (8) is connected to the boil-off draw-off line (3), which flow banks open into a common mixing chamber (6) which is connected to a flowline (5) to the consumer, said combined heat exchanger (9) having flow connection with a supply of hot flow medium for conducting said hot flow medium on the shell side of said heat exchanger (9), characterized in that a compressor (4) is provided in the boil-off draw-off line (3) before the combined heat exchanger (9).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO960836A NO960836A (en) | 1996-02-29 | 1996-02-29 | Method of utilizing decoction from liquefied gas and plants for carrying out the method |
NO960836 | 1996-02-29 | ||
PCT/NO1997/000056 WO1997032157A1 (en) | 1996-02-29 | 1997-02-20 | Method in the utilization of boil-off from liquid gas and apparatus for carrying out the method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0885365A1 EP0885365A1 (en) | 1998-12-23 |
EP0885365B1 true EP0885365B1 (en) | 2005-08-31 |
Family
ID=19899100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97914662A Expired - Lifetime EP0885365B1 (en) | 1996-02-29 | 1997-02-20 | Method in the utilization of boil-off from liquid gas and apparatus for carrying out the method |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0885365B1 (en) |
JP (1) | JP2000506250A (en) |
KR (1) | KR100490689B1 (en) |
AT (1) | ATE303556T1 (en) |
AU (1) | AU2181297A (en) |
DE (1) | DE69734098T2 (en) |
NO (1) | NO960836A (en) |
WO (1) | WO1997032157A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101754897B (en) * | 2007-07-19 | 2013-08-28 | 大宇造船海洋株式会社 | Fuel gas supply system and method of ship |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4596620B2 (en) * | 2000-09-13 | 2010-12-08 | 伊藤工機株式会社 | LPG vaporization mechanism |
GB0120661D0 (en) * | 2001-08-24 | 2001-10-17 | Cryostar France Sa | Natural gas supply apparatus |
KR100678725B1 (en) * | 2006-03-06 | 2007-02-02 | 주식회사 동화엔텍 | Unionized heat-exchanging system for LNG of LNG transporting ship |
KR100805022B1 (en) * | 2007-02-12 | 2008-02-20 | 대우조선해양 주식회사 | Lng cargo tank of lng carrier and method for treating boil-off gas using the same |
KR100835090B1 (en) | 2007-05-08 | 2008-06-03 | 대우조선해양 주식회사 | System and method for supplying fuel gas of lng carrier |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889485A (en) * | 1973-12-10 | 1975-06-17 | Judson S Swearingen | Process and apparatus for low temperature refrigeration |
DE3237222A1 (en) * | 1982-10-07 | 1984-04-12 | Linde Ag, 6200 Wiesbaden | Process for treating a liquefied natural gas |
NO176454C (en) * | 1993-01-29 | 1995-04-05 | Kvaerner Moss Tech As | Methods and plants for utilizing and providing fuel gas, respectively |
-
1996
- 1996-02-29 NO NO960836A patent/NO960836A/en not_active IP Right Cessation
-
1997
- 1997-02-20 EP EP97914662A patent/EP0885365B1/en not_active Expired - Lifetime
- 1997-02-20 KR KR10-1998-0706770A patent/KR100490689B1/en not_active IP Right Cessation
- 1997-02-20 AU AU21812/97A patent/AU2181297A/en not_active Abandoned
- 1997-02-20 JP JP9530840A patent/JP2000506250A/en not_active Ceased
- 1997-02-20 AT AT97914662T patent/ATE303556T1/en not_active IP Right Cessation
- 1997-02-20 DE DE69734098T patent/DE69734098T2/en not_active Expired - Lifetime
- 1997-02-20 WO PCT/NO1997/000056 patent/WO1997032157A1/en active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101754897B (en) * | 2007-07-19 | 2013-08-28 | 大宇造船海洋株式会社 | Fuel gas supply system and method of ship |
Also Published As
Publication number | Publication date |
---|---|
DE69734098D1 (en) | 2005-10-06 |
NO960836D0 (en) | 1996-02-29 |
NO300288B1 (en) | 1997-05-05 |
JP2000506250A (en) | 2000-05-23 |
NO960836A (en) | 1997-05-05 |
KR19990087360A (en) | 1999-12-27 |
DE69734098T2 (en) | 2006-06-08 |
WO1997032157A1 (en) | 1997-09-04 |
EP0885365A1 (en) | 1998-12-23 |
AU2181297A (en) | 1997-09-16 |
ATE303556T1 (en) | 2005-09-15 |
KR100490689B1 (en) | 2005-08-05 |
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