KR970011763A - Method and apparatus for treating low temperature liquid and its boiling off gas - Google Patents

Method and apparatus for treating low temperature liquid and its boiling off gas Download PDF

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Publication number
KR970011763A
KR970011763A KR1019960034579A KR19960034579A KR970011763A KR 970011763 A KR970011763 A KR 970011763A KR 1019960034579 A KR1019960034579 A KR 1019960034579A KR 19960034579 A KR19960034579 A KR 19960034579A KR 970011763 A KR970011763 A KR 970011763A
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South Korea
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gas
liquid
low temperature
boiling
boil
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KR1019960034579A
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Korean (ko)
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유타가 이토
도시노리 니이
마사미 야마네
유키오 이와타
요시히코 야마시다
기요시 야마자키
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가메다카 소키치
가부시키가이샤 고베 세이코쇼
료키 신이치로
오사카 가스 가부시키가이샤
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Publication of KR970011763A publication Critical patent/KR970011763A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F25J1/0025—Boil-off gases "BOG" from storages
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/60—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being hydrocarbons or a mixture of hydrocarbons

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

과제assignment

저장조내에 수용된 LNG등의 저온액체 및 그 BOG(보일오프가스)를 측냉용기를 사용하지 않고, 게다가 적은 동력으로 승압처리한다.The low-temperature liquid such as LNG and the BOG (boil-off gas) contained in the storage tank is pressurized to a low power without using a sidewall container.

해결수단Solution

LNG저장조(10)내의 BOG를 제1압축기(16)로 제1압력까지 압축하고, 상기 LNG저장조(10)에서 압송되는 LNG와 혼합기(17)로 혼합하여, 적어도 일부의 BOG를 액화시킨다. 이 혼합유체를 기액분리기(20)로 기액분리하여 가스성분을 제2압축기(20)로 상기 제1압력보다 놓은 제2압력까지 압축하는 한편, 액체성분을 제2펌프(22) 및 기화기(24)에 의해 압축, 기화시킨다.The BOG in the LNG storage tank 10 is compressed to the first pressure by the first compressor 16 and mixed with the LNG fed by the LNG storage tank 10 in the mixer 17 to liquefy at least a part of the BOG. The mixed fluid is gas-liquid separated by the gas-liquid separator 20 to compress the gas component to a second pressure which is higher than the first pressure by the second compressor 20 while the liquid component is supplied to the second pump 22 and the vaporizer 24 ).

Description

저온액체 및 그 보일오프가스의 처리방법 및 장치Method and apparatus for treating low temperature liquid and its boiling off gas

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 제1실시형태에 있어서의 LNG 및 BOG 처리장치를 나타내는 플로우쉬트,FIG. 1 is a flow sheet showing an LNG and BOG processing apparatus according to the first embodiment of the present invention,

제2도는 본 발명의 제2실시형태에 있어서의 LNG 및 그 BOG 처리장치를 나타내는 플로우쉬트, 제2도는 본 발명의 제2실시형태에 있어서의 LNG 및 그 BOG 처리장치를 나타내는 플로우쉬트, 제3도는 본 발명의 제3실시형태에 있어서의 LNG 및 그 BOG 처리장치를 나타내는 플로우쉬트2 is a flow sheet showing the LNG and its BOG processing apparatus according to the second embodiment of the present invention, FIG. 2 is a flow sheet showing LNG and its BOG processing apparatus according to the second embodiment of the present invention, The LNG in the third embodiment of the present invention and the flow sheet showing the BOG processing apparatus thereof

Claims (8)

저장조내에 수용된 저온액체 및 상기 저장조내에서 발생한 보일오프가스를 처리하기 위한 저온액체 및 그 보일오프가스의 처리방법에 있어서, 상기 저장조내에서 상기 보일오프가스를 뽑아내어 이것을 제1압력까지 압축하고, 이 압축 보일오프가스를 상기 저장조내에서 도출된 저온액체에서 혼합하여 상기 압축 보일오프가스의 적어도 일부를 액화시키고, 이 혼합액체를 기액분리시켜 그중의 액체성분을 압축시키고 또한 기화시키고, 가스 성분을 상기 제1압력보다 높은 제2압력까지 압축하는 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리방법.A method for treating low temperature liquid and its boil-off gas for treating low temperature liquid contained in a storage tank and boil-off gas generated in the storage tank, the boil-off gas being extracted in the storage tank to compress it to a first pressure, The compressed boiling off gas is mixed in a low temperature liquid derived from the storage tank to liquefy at least a part of the compressed boiling off gas and the mixed liquid is subjected to gas-liquid separation to compress and vaporize the liquid component, And compressing the low temperature liquid to a second pressure higher than the first pressure. 제1항에 있어서, 상기 압축 보일오프가스를 상기 저온액체에 혼합하기 전에 상기 액체성분과 열교환시켜서 예비냉각하는 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리방법.The method of claim 1, wherein the compressed boiling off gas is precooled by heat exchange with the liquid component prior to mixing with the low temperature liquid. 제2항에 있어서, 상기 압축보일오프가스와의 열교환에 의해 상기 액체성분을, 그안에 함유된 상기 보일 오프가스가 기화하는 온도보다 낮은 온도까지 가온하고, 이 액체성분에서 일부를 뽑아내어 상기 압축 보일오프가스와 다시 열교환시킴으로써 완전기화시키는 한편, 나머지 액체성분을 기화기로 기화시키는 것을 특징으로하는 저온 액체 및 그 보일오프가스의 처리방법.The method as claimed in claim 2, further comprising the steps of: warming the liquid component to a temperature lower than a temperature at which the boiling off gas contained therein is vaporized by heat exchange with the compressed boiling off gas, And then vaporizing the other liquid components by means of a vaporizer, characterized in that the vaporization is carried out again by heat exchange with the boil-off gas, and the remaining liquid components are vaporized by the vaporizer. 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 액체성분의 압축에 펌프를 사용한과 동시에, 상기 액체성분에 상기 저장조에서 도출된 저온액체를 혼합하여 그 액체성분을 예비냉각하고 나서 상기 펌프에 도입하는 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리방법.4. The method according to any one of claims 1 to 3, wherein a pump is used for compressing the liquid component, a low-temperature liquid derived from the reservoir is mixed with the liquid component, the liquid component is pre-cooled, Wherein the low temperature liquid and the boiling off gas are introduced into the low temperature liquid. 저장조내에 수용된 저온액체 및 상기 저장조내에서 발생한 보일오프가스를 처리하기 위한 저온액체 및 그 보일오프가스의 처라장치에 있어서, 사이 저장조내에서 외부로 저온액체를 압송하는 압송수단과, 상기 저장조내에서 보일오프가스를 뽑아내어 이것을 제1압력까지 압축하는 제1가스압축수단과, 이 제1가스압축수단으로 압축된 보일오프가스와 상기 압송수단에 의해 압송되는 저온액체를 혼합하는 혼합부와, 이 혼합부에서 혼합된 혼합유체를 가스성분과 액체성분으로 분리하는 기액분리부와, 이 기액분리부에서 기화수단과, 상기 기액분리부에서 분리된 가스성분을 상기 제1압력보다 높은 제2압력까지 압축하는 제2가스압축수단을 구비한 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리장치.A low temperature liquid for treating the low temperature liquid contained in the storage tank and a boil off gas generated in the storage tank, the apparatus comprising: pressure feeding means for feeding low temperature liquid to the outside in the interstage storage tank; A mixing portion for mixing the boil-off gas compressed by the first gas compression means with the low temperature liquid which is pressure-fed by the pressure-feeding means, and a mixing portion for mixing the boil- A gas-liquid separator for separating the mixed fluid mixed in the mixing portion into a gas component and a liquid component; a gas-liquid separator for separating the gas component separated from the gas-liquid separator into a second pressure higher than the first pressure And a second gas compression means for compressing the boil-off gas. 제5항에 있어서, 상기 혼합부에 보내어지는 압축 보일오프가스와 상기 기액분리부에서 도출된 상기 액체 성분을 열교환시키는 열교환기를 구비한 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리장치.The apparatus according to claim 5, further comprising a heat exchanger for exchanging heat between the compressed boiling off gas sent to the mixing section and the liquid component derived from the gas-liquid separating section. 제6항에 있어서, 상기 열교환기로서, 상기 압축 보일오프가스와의 열교환에 의해 상기 액체성분을, 그안에 함유된 상기 보일오프가스가 기화하는 온도보다 낮은 온도까지 가온하는 저온측 열교환기와, 이 액체성분의 일부를 상기 압축 보일오프가스와의 열교환에 의해 다시 가온하여 완전 기화시키는 고온측 열교환기를 구비하고, 상기 액체성분의 나머지를 상기 기화수단으로 유도하도록 배관한 것을 특징으로 하는 저온액체 및 그 보일오프가스의 처리장치.7. The heat exchanger according to claim 6, further comprising: a low temperature side heat exchanger for warming the liquid component to a temperature lower than a temperature at which the boiling off gas contained therein is vaporized by heat exchange with the compressed boiling off gas; And a high temperature side heat exchanger for completely vaporizing a part of the liquid component by heat exchange with the compressed boiling off gas and piping the remaining portion of the liquid component to be led to the vaporizing means. Apparatus for the treatment of boiling off gases. 제5항 내지 제7항 중 어느 한 항에 있어서, 상기 액체압축수단을 펌프로 구성함과 동시에, 상기 저장조에서 압송되는 저온액체의 일부를 뽑아내어 상기 펌프 상류측에 액체성분에 직접 합류시키는 바이패스 배관을 구비한 것을 특징으로 저온액체 및 그 보일오프가스의 처리장치.The pump according to any one of claims 5 to 7, characterized in that the liquid compression means is constituted by a pump, and a part of the low-temperature liquid, which is pressure-fed from the storage tank, is pulled out to directly join the liquid component to the upstream side of the pump Wherein the low-temperature liquid and the boil-off gas are treated by the low-temperature liquid and the boil-off gas. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960034579A 1995-08-25 1996-08-21 Method and apparatus for treating low temperature liquid and its boiling off gas KR970011763A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21687595A JP3586501B2 (en) 1995-08-25 1995-08-25 Cryogenic liquid and boil-off gas processing method and apparatus
JP95-216875 1995-08-25

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