KR100490689B1 - Method of using boil off from liquefied gas and apparatus for performing the method - Google Patents

Method of using boil off from liquefied gas and apparatus for performing the method Download PDF

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Publication number
KR100490689B1
KR100490689B1 KR10-1998-0706770A KR19980706770A KR100490689B1 KR 100490689 B1 KR100490689 B1 KR 100490689B1 KR 19980706770 A KR19980706770 A KR 19980706770A KR 100490689 B1 KR100490689 B1 KR 100490689B1
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South Korea
Prior art keywords
boil
liquefied gas
flow
heat exchanger
gas
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KR10-1998-0706770A
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Korean (ko)
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KR19990087360A (en
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페르 크리스챤센
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크베르너 메리타임 에이.에스
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    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Treating Waste Gases (AREA)
  • Fertilizers (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

In a plant for the production of fuel gas from boil-off and from liquefied gas with the aid of a combined heat exchanger (9), a compressor (4) is placed upstream of the heat exchanger in the gas line carrying boil-off. Compressed boil-off and liquefied gas pass in heat exchange in a combined heat exchanger (9) which has separate flow banks (7, 8) for liquefied gas and boil-off, respectively. From the combined heat exchanger (9), the two volumes of gas pass in a mixture to a consumer through a pipeline (5).

Description

액화 가스로부터의 보일 오프를 사용하는 방법 및 이 방법을 수행하기 위한 장치Method for using boil off from liquefied gas and apparatus for performing the method

본 발명은 액화 가스를 증발시켜 생성된 가스와 함께 액화 가스로부터의 보일 오프(boil-off)를 조합하여 연료 가스로 사용하는 방법에 관한 것이다.The present invention relates to a method of combining a boil-off from a liquefied gas with a gas produced by evaporating a liquefied gas and using it as a fuel gas.

또한, 본 발명은 상기 방법을 수행하기 위한 장치에 관한 것으로서, 보일 오프 및 증발된 액화 가스가 소모 장치(consumer)로 함께 전달되며, 상기 장치는 액화 가스용 저장 탱크와, 상기 저장 탱크로부터의 보일 오프용 유출 라인과, 상기 저장 탱크로부터의 액화 가스용 유출 라인이 부착된 펌프와, 공통 외부 쉘(shell)내에 2개의 분리된 유동 뱅크(bank)를 갖추고 있는 조합된 열 교환기를 포함하고 있고, 뱅크들 중 하나는 액화 가스의 증발을 위해 액화 가스용 유출 라인에 연결되어있고 다른 뱅크는 보일 오프용 유출 라인에 연결되어 있으며, 상기 유동 뱅크들은 공통 혼합 챔버에 대해 개방되어 있으며, 상기 공통 혼합 챔버는 소모 장치로 연장된 유동 라인에 연결되어 있다.The invention also relates to an apparatus for carrying out the method, wherein the boil off and evaporated liquefied gas is delivered together to a consumer, the apparatus comprising a storage tank for liquefied gas and a boiler from the storage tank. A combined heat exchanger having an off-flow line for off, a pump with an outflow line for liquefied gas from the storage tank, and two separate flow banks in a common outer shell, One of the banks is connected to an outlet line for liquefied gas for evaporation of the liquefied gas and the other bank is connected to an outlet line for boil off, the flow banks are open to a common mixing chamber, the common mixing chamber Is connected to a flow line extending to the consuming device.

NO-PS 176 454호에는 액화 가스로부터의 보일 오프와 액화 가스를 증발시켜 생성된 가스를 조합하여 연료 가스로서 사용하는 방법이 공지되어 있으며, 보일 오프 및 증발된 가스는 함께 압축되고, 그리고 압축하기 전에 보일 오프 및 액화 가스는 각각 조합된 열 교환기내의 각각의 영역에서 과열(overheat)되어 증발되고, 공통 혼합 챔버에 모아진다. NO-PS 176 454 discloses a method of combining a boil off from a liquefied gas with a gas produced by evaporating the liquefied gas and using it as a fuel gas, wherein the boil off and evaporated gases are compressed together and compressed Previously the boil off and liquefied gases are each overheated and evaporated in each region within the combined heat exchanger and collected in a common mixing chamber.

또한 상기한 공보에는 보일 오프 및 증발된 가스가 함께 모아져서 압축되는 장치가 공지되어 있다. 상기 장치는 액화 가스용 저장 탱크와, 상기 저장 탱크로부터의 각각의 보일 오프 및 액화 가스용 유출 라인들과, 및 공통 외부 쉘내에 2개의 분리된 유동 뱅크를 갖추고 있는 조합된 열 교환기를 포함하고 있다. 유동 뱅크들 중 하나는 액화 가스용 유출 라인에 연결되는 반면, 다른 유동 파이프 뱅크는 보일 오프용 유출 라인에 연결되어 있다. 상기 유동 뱅크들은 공통 혼합 챔버에 대해 개방되어 있고, 상기 공통 혼합 챔버는 소모 장치로 연장된 유동 라인에 연결되어 있다. The publication also discloses a device in which boil off and evaporated gases are collected together and compressed. The apparatus includes a combined heat exchanger having a storage tank for liquefied gas, respective outlet lines for liquefied gas and liquefied gas from the storage tank, and two separate flow banks in a common outer shell. . One of the flow banks is connected to an outlet line for liquefied gas, while the other flow pipe bank is connected to an outlet line for boil off. The flow banks are open to the common mixing chamber, which is connected to a flow line extending to the consuming device.

전술한 공지의 기술에 의해 얻어지는 장점은 방법 및 장치가 간단하고, 통상적으로 사용되는 분리기가 필요없으며, 압축기의 흡입 온도가 상당히 높기 때문에, 압축기가 극저온용일 필요가 없다는 것이다. 이러한 종래 기술의 단점은 압축기가 가스의 전체 용적, 즉 천연 보일 오프 및 증발된 가스 모두를 필수적으로 감당해야만 한다는 것이다. The advantages obtained by the known techniques described above are that the compressor does not need to be cryogenic because the method and apparatus are simple, do not require a commonly used separator and the suction temperature of the compressor is quite high. A disadvantage of this prior art is that the compressor must essentially cover the entire volume of gas, ie both natural boil off and evaporated gas.

본 발명의 목적은 NO-PS 175 654로부터의 종래 기술의 장점을 가지면서도 한편으로 장치를 보다 더 단순화한 서두에 언급한 장치 및 방법을 제공하는 것이다. It is an object of the present invention to provide the devices and methods mentioned at the outset with the advantages of the prior art from NO-PS 175 654 while further simplifying the device.

이는 전술한 방법에 의해 본 발명에 따라 달성되며, 보일 오프는 압축되어 액화 가스와 함께 열 교환을 위해 전달되며, 이어서 열 교환 과정중에 증발된 액화 가스와 혼합된다. This is achieved according to the invention by the above-described method, in which the boil off is compressed and delivered for heat exchange with the liquefied gas, which is then mixed with the liquefied gas evaporated during the heat exchange process.

열 교환전에 압축이 이루어지고 단지 보일 오프만이 압축된다는 사실에 의해, 단지 보일 오프의 용적에만 압축이 적용되고 가스의 전체 용적에 대해서는 압축이 적용되지 않는 장점이 수득된다. 그 결과, 필요 동력이 감소하고, 용량 제어가 간단하다. By the fact that the compression takes place before heat exchange and only the boil off is compressed, the advantage is obtained that only compression is applied to the volume of the boil off and no compression is applied to the entire volume of the gas. As a result, required power is reduced and capacity control is simple.

본 발명에 따르면, 전술한 바와 같은 장치가 제안되며, 상기 장치는 조합된 열 교환기에 앞서서 보일 오프용 유출 라인에 압축기가 제공되는 것을 특징으로 한다. According to the invention, an apparatus as described above is proposed, wherein the apparatus is characterized in that a compressor is provided in the outlet line for off-voile prior to the combined heat exchanger.

열 교환기 상류의 보일 오프용 유출 라인에 압축기를 배치함으로써, 상기 압축기는 단지 보일 오프 용적만을 감당하기만 하면 되고, 가스의 전체 용적을 감당할 필요가 없다. LNG의 경우에 -140℃만큼 낮은 온도의 가스로 동작하도록 압축기를 구성하여야 하지만, 이러한 단점은 크기와 관련하여 압축기가 보다 소형화되고, 필요 동력이 감소되며, 작업 영역이 보다 작고 그리고 용량 제어가 더 간단하다는 장점에 의해 보상되고도 남는다. 추가의 장점은 조합된 열 교환기가 보다 높은 압력 강하를 감당할 수 있는 크기가 될 수 있다는 것이며, 그 결과 쉘 크기를 감소시켜서 제조 비용을 낮추게 된다. 문제는, 바람직하지 않을 수도 있는 압축기 재료의 선택에 있지만, 전술한 바와 같이, 이 단점은 소형으로 제작되는 압축기에 의해 해소된다.By placing the compressor in a boil off outlet line upstream of the heat exchanger, the compressor only needs to bear the boil off volume and does not have to cover the entire volume of gas. In the case of LNG, the compressor must be configured to operate with gases as low as -140 ° C, but this disadvantage is that the compressor is smaller in size, the power required is reduced, the working area is smaller and the capacity control is more It is also rewarded by the advantage of simplicity. A further advantage is that the combined heat exchanger can be sized to withstand higher pressure drops, resulting in reduced shell size and lower manufacturing costs. The problem lies in the choice of compressor material, which may be undesirable, but as mentioned above, this disadvantage is eliminated by compact compressors.

본 발명은 전술한 장치를 개략적으로 예시한 도면을 참조하여 보다 더 상세하게 설명될 것이다. The invention will be described in more detail with reference to the drawings schematically illustrating the foregoing apparatus.

도면에서, 참조 부호(1)는 액화 가스용 저장 탱크, 예를 들어 LNG선의 LNG 탱크를 표시한다. 주변으로부터 열 침투로 인하여, 소위 보일 오프가 생성된다. 이는 저장 탱크(1)의 도옴(2)에 축적되고 보일 오프용 유출 라인(3)을 통해 배출될 수 있다. 상기 유출 라인(3)은 압축기(4)로 이어진다. 상기 압축기(4)에서, 보일 오프는 압축되며, 그에 따라 온도가 상승한다. 상기 압축기로부터, 압축된 보일 오프가 조합된 열 교환기(9)로 진행된다. In the figure, reference numeral 1 denotes a storage tank for liquefied gas, for example, an LNG tank of an LNG carrier. Due to the heat penetration from the surroundings, so-called boy off is produced. It accumulates in the dome 2 of the storage tank 1 and can be discharged through the outlet line 3 for boil off. The outlet line 3 leads to the compressor 4. In the compressor 4, the boil off is compressed and the temperature rises accordingly. From this compressor, compressed boil off proceeds to the combined heat exchanger 9.

상기 보일 오프는 선박의 추진 엔진내에서 연료 가스로서 사용된다. 이 장치는, 보일 오프가 충분하지 않은 경우, 즉 공급될 수 있는 보일 오프 보다 더 많은 양의 연료 가스가 필요한 경우, 펌프(11)에 의해 액화 천연 가스가 인출되고 유출 라인(10)을 통해 조합된 열 교환기(9)로 유도된다. The boil off is used as fuel gas in the propulsion engine of the ship. The device is liquefied natural gas is withdrawn by the pump 11 and combined via the outflow line 10 when the boil off is not sufficient, i.e. when a larger amount of fuel gas is required than the boil off that can be supplied. Led to a heat exchanger (9).

상기 조합된 열 교환기(9)는 각각의 액화 가스 및 보일 오프를 위한 별도의 유동 뱅크(7 및 8)를 갖추고 있다. 상기 액화 가스 및 보일 오프는, 도면의 화살표에 의해 표시된 바와 같이, 외부 고온 유동과 열 교환된다. 대부분의 경우 증기인 이 유동은 열 교환기의 셀 측면으로부터 전달된다. The combined heat exchanger 9 is equipped with separate flow banks 7 and 8 for each liquefied gas and boil off. The liquefied gas and the boil off are heat exchanged with an external hot flow, as indicated by the arrows in the figure. In most cases this flow, which is steam, is transferred from the cell side of the heat exchanger.

상기 2개의 가스 유동은 혼합 챔버(6)내에 축적되고, 유동 라인(5)을 통해 도시되지 않은 소모 장치, 예를 들어, 버너로 진행된다. The two gas flows accumulate in the mixing chamber 6 and proceed through the flow line 5 to a consuming device, for example a burner, not shown.

Claims (2)

액화 가스를 증발시켜 생성된 가스와 상기 액화 가스로부터의 보일 오프를 조합하여 연료 가스로 사용하는 방법에 있어서,A method of combining a gas generated by evaporating a liquefied gas with a boil off from the liquefied gas and using it as a fuel gas, 상기 보일 오프를 압축하여 액화 가스와 함께 외부 고온 매질 유동과 열 교환시키고, 상기 압축된 보일 오프와 열 교환 과정중에 증발된 액화 가스를 혼합하여 연료 가스를 형성하는 것을 특징으로 하는, 액화 가스로부터의 보일 오프를 사용하는 방법.Compressing the boil off to heat exchange with the liquefied gas with an external hot medium flow and mixing the compressed boil off with the liquefied gas evaporated during the heat exchange process to form a fuel gas. How to use Boyle Off. 보일 오프 및 증발된 액화 가스가 함께 소모 장치로 전달되는 장치로서, A device in which boil off and evaporated liquefied gas are delivered together to a consuming device, 액화 가스용 저장 탱크(1); A storage tank 1 for liquefied gas; 상기 저장 탱크(1)로부터의 보일 오프용 유출 라인(3);Outflow line (3) for boil off from said storage tank (1); 상기 저장 탱크(1)로부터의 액화 가스용 유출 라인(10)이 부착된 펌프(1); 및 A pump (1) to which an outflow line (10) for liquefied gas from the storage tank (1) is attached; And 상기 공통 외부 쉘내에 2개의 분리된 유동 뱅크(7, 8)를 갖추고 있는 조합된 열 교환기(9);를 포함하며, A combined heat exchanger (9) having two separate flow banks (7, 8) in the common outer shell; 상기 하나의 유동 뱅크(7)는 액화 가스용 유출 라인(10)에 연결되어 있고, 다른 유동 뱅크(8)는 보일 오프 유출 라인(3)에 연결되어 있으며, 상기 유동 뱅크들은 소모 장치로의 유동 라인(5)에 연결된 공통 혼합 챔버(6)에 대해 개방되어 있고, 상기 조합된 열 교환기(9)는 상기 열 교환기(9)의 쉘 측면상에 고온 유동 매질을 전달하기 위한 고온 유동 매질 공급부를 구비한 유동 연결부를 갖추고 있는, 제 1 항에 따른 방법을 수행하기 위한 장치에 있어서,The one flow bank 7 is connected to an outflow line 10 for liquefied gas and the other flow bank 8 is connected to a boil off outlet line 3, the flow banks flowing to the consuming device. Open to a common mixing chamber 6 connected to line 5, the combined heat exchanger 9 provides a hot flow medium supply for delivering a hot flow medium on the shell side of the heat exchanger 9. An apparatus for carrying out the method according to claim 1, comprising a flow connection with 상기 조합된 열 교환기(9)에 앞서 압축기(4)가 보일 오프용 유출 라인(3)에 제공되어 있는 것을 특징으로 하는, 액화 가스로부터의 보일 오프를 사용하는 장치.Apparatus using a boil off from liquefied gas, characterized in that a compressor (4) is provided in the boil off outlet line (3) prior to the combined heat exchanger (9).
KR10-1998-0706770A 1996-02-29 1997-02-20 Method of using boil off from liquefied gas and apparatus for performing the method KR100490689B1 (en)

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