KR100894013B1 - Re-liquefaction Unit of Natural Boil-Off Gas - Google Patents

Re-liquefaction Unit of Natural Boil-Off Gas Download PDF

Info

Publication number
KR100894013B1
KR100894013B1 KR1020070096536A KR20070096536A KR100894013B1 KR 100894013 B1 KR100894013 B1 KR 100894013B1 KR 1020070096536 A KR1020070096536 A KR 1020070096536A KR 20070096536 A KR20070096536 A KR 20070096536A KR 100894013 B1 KR100894013 B1 KR 100894013B1
Authority
KR
South Korea
Prior art keywords
natural gas
nitrogen
pipe
discharge pipe
liquid discharge
Prior art date
Application number
KR1020070096536A
Other languages
Korean (ko)
Other versions
KR20090030879A (en
Inventor
이동훈
한기훈
장대준
하종필
Original Assignee
현대중공업 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020070096536A priority Critical patent/KR100894013B1/en
Publication of KR20090030879A publication Critical patent/KR20090030879A/en
Application granted granted Critical
Publication of KR100894013B1 publication Critical patent/KR100894013B1/en

Links

Images

Classifications

    • 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
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0261—Details of cold box insulation, housing and internal structure
    • 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
    • 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
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
    • F25J1/005—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by expansion of a gaseous refrigerant stream with extraction of work
    • 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
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/007—Primary atmospheric gases, mixtures thereof
    • F25J1/0072—Nitrogen
    • 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
    • F25J1/0203—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
    • F25J1/0204—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR cycle
    • 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
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
    • F25J1/0247—Different modes, i.e. 'runs', of operation; Process control start-up of the process
    • 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
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
    • F25J2220/62—Separating low boiling components, e.g. He, H2, N2, Air
    • 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
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/42—Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/34—Details about subcooling of liquids
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/60—Details about pipelines, i.e. network, for feed or product distribution

Abstract

본 발명은 천연가스 액적분리기에서 분리된 재 액화 천연가스가 배출되는 액체 배출배관을 이중배관으로 형성하여, 상기 액체 배출배관의 외관에 냉매로 사용하는 저온 질소를 공급하여 외부에서 침투하는 열을 막을 수 있을 뿐만 아니라 재 액화 천연가스가 기화된 것을 재 응축시킬 수 있도록 하는 천연가스 재 액화장치에 관한 것이다.The present invention forms a liquid discharge pipe through which the liquefied natural gas separated from the natural gas droplet separator is discharged into a double pipe, thereby supplying low temperature nitrogen used as a refrigerant to the exterior of the liquid discharge pipe to prevent heat from penetrating from the outside. A natural gas reliquefaction apparatus that can recondensate vaporized gas as well as reliquefaction natural gas.

상기 천연가스 재 액화장치는, 화물창과 연결된 천연가스 재액화기와, 상기 천연가스 재 액화기와 저압질소 공급배관에 의해 연결된 질소 팽창기와, 상기 천연가스 재액화기와 연결된 천연가스 액적분리기와, 상기 액적분리기로부터 분리된 재 액화 천연가스를 화물창으로 재 유입시키는 천연가스 이송펌프를 포함하여 구성된 천연가스 재 액화장치에 있어서, 상기 천연가스 액적분리기와 내관의 일측 끝단부가 연결되며, 그 내관의 타측 끝단부는 상기 천연가스 이송펌프의 일측 끝단부와 타측이 연결된 유입차단 밸브의 일측과 연결되는 이중배관 형태의 액체 배출배관; 상기 액체 배출배관의 외관의 타측과 일측 끝단이 연결되며, 타측 끝단은 상기 질소 팽창기와 천연가스 재액화기를 연결하는 저압질소 공급배관과 연결되는 단열용 질소 유입배관; 및 상기 액체 배출배관의 외관의 일측과 일측 끝단부가 연결되며, 타측 끝단부는 상기 천연가스 재액화기와 연결된 저압질소 회수배관과 연결되는 단열용 질소 배출배관;을 포함하여 구성된 액체증발 방지장치를 더 포함한다.The natural gas reliquefaction apparatus includes a natural gas reliquefaction unit connected to a cargo hold, a nitrogen expander connected by the natural gas reliquefaction unit and a low pressure nitrogen supply pipe, a natural gas droplet separator connected to the natural gas reliquefaction unit, and the droplet separator A natural gas reliquefaction apparatus comprising a natural gas transfer pump for reflowing natural gas separated from the re-liquefaction into a cargo hold, wherein the natural gas droplet separator and one end of the inner tube is connected, the other end of the inner tube A liquid discharge pipe of a double pipe type connected to one side of one end of the natural gas transfer pump and one side of the inlet shutoff valve connected to the other side; The other side and one end of the external appearance of the liquid discharge pipe is connected, the other end is insulated nitrogen inlet pipe connected to the low pressure nitrogen supply pipe connecting the nitrogen expander and natural gas reliquefaction; And one side end of one side of the exterior of the liquid discharge pipe is connected to one end, and the other end thereof is a heat insulating nitrogen discharge pipe connected to the low pressure nitrogen recovery pipe connected to the natural gas reliquefaction device. do.

천연가스 재 액화기, 질소 팽창기, 액체 배출배관, 천연가스 액적분리기 Natural gas ash liquefier, nitrogen expander, liquid discharge pipe, natural gas droplet separator

Description

천연가스 재 액화장치{Re-liquefaction Unit of Natural Boil-Off Gas}Re-liquefaction Unit of Natural Boil-Off Gas

본 발명은 천연가스 재 액화장치에 관한 것으로, 보다 상세하게는 천연가스 액적분리기에서 분리된 재 액화 천연가스가 배출되는 액체 배출배관을 이중배관으로 형성하여, 상기 액체 배출배관의 외관에 냉매로 사용하는 저온 질소를 공급하여 외부에서 침투하는 열을 막을 수 있을 뿐만 아니라 재 액화 천연가스가 기화된 것을 재 응축시킬 수 있도록 하는 천연가스 재 액화장치에 관한 것이다.The present invention relates to a natural gas re-liquefaction apparatus, and more particularly, to form a liquid discharge pipe for discharging the re-liquefied natural gas separated from the natural gas droplet separator into a double pipe, it is used as a refrigerant in the appearance of the liquid discharge pipe The present invention relates to a natural gas reliquefaction apparatus that supplies low temperature nitrogen to prevent heat from penetrating from the outside and recondenses the vaporized reliquefaction natural gas.

이하, 도면을 참조하여 배경기술에 대하여 상세히 설명한다.Hereinafter, the background art will be described in detail with reference to the accompanying drawings.

도 1은 종래의 천연가스 재 액화장치에 대한 개략도이다.1 is a schematic diagram of a conventional natural gas reliquefaction apparatus.

도 1을 참조하면 종래의 천연가스 재 액화장치(1)는, 화물창(미 도시)과 연결되어 상기 화물창에서 발생된 자연 기화된 천연가스가 유입되는 천연가스 재액화기(10)와, 일측은 고압질소 공급배관(20)과 연결되며, 타측은 상기 천연가스 재액화기(10)와 일측 끝단이 연결되는 저압질소 공급배관(21)의 타측 끝단과 연결되어, 고압질소 공급배관(20)을 통해 공급되는 고압 질소를 팽창시켜 저압질소 공급배 관(21)을 통해 상기 천연가스 재액화기(10) 내로 저압 질소를 유입시키는 질소 팽창기(11)와, 상기 천연가스 재액화기(10)와 연결되어 천연가스 재액화기(10)에 의해 액화된 재 액화 천연가스와 재 액화되지 않은 잉여 비 응축가스를 분리하는 천연가스 액적분리기(12)와, 상기 천연가스 액적분리기(12)와 연결되는 기체 배출배관(13)과, 상기 기체 배출배관(13)에 설치되는 압력제어 밸브(14)와, 상기 천연가스 액적분리기(12)와 연결되는 액체 배출배관(150)과, 상기 액체 배출배관(150)과 연결되는 유입 차단밸브(16)와, 상기 유입 차단밸브(16)와 연결되는 천연가스 이송펌프(17)와, 상기 천연가스 이송펌프(17)와 연결되는 배출 차단밸브(18)를 포함하여 구성된다.Referring to FIG. 1, a conventional natural gas reliquefaction apparatus 1 is connected to a cargo hold (not shown), and a natural gas reliquefaction device 10 into which natural vaporized natural gas generated in the cargo hold is introduced, and one side is a high pressure. It is connected to the nitrogen supply pipe 20, the other side is connected to the other end of the low-pressure nitrogen supply pipe 21 is connected to the end of the natural gas re-liquefaction 10, supply through the high-pressure nitrogen supply pipe 20 Nitrogen expander (11) for introducing low pressure nitrogen into the natural gas reliquefaction system (10) through the low pressure nitrogen supply pipe (21) by expanding the high pressure nitrogen to be connected to the natural gas reliquefaction system (10) Natural gas droplet separator 12 for separating the re-liquefied natural gas liquefied by the re-liquefier 10 and the surplus non-re-condensed gas, and the gas discharge pipe connected to the natural gas droplet separator 12 ) And the gas discharge pipe (13) A pressure control valve 14, a liquid discharge pipe 150 connected to the natural gas droplet separator 12, an inlet shutoff valve 16 connected to the liquid discharge pipe 150, and the inlet shutoff valve It comprises a natural gas transfer pump 17 is connected to the 16, and the discharge shutoff valve 18 is connected to the natural gas transfer pump 17.

상기와 같이 구성된 종래의 천연가스 재 액화장치(1)는, 액체 배출배관(150)의 외주면에 단열재(150a)를 설치하여 외부에서 침투하는 열을 막아 상기 액체 배출배관(150)으로 유입되는 재 액화 천연가스가 증발하지 않도록 하였다.Conventional natural gas ash liquefaction device 1 configured as described above, by installing the heat insulating material (150a) on the outer circumferential surface of the liquid discharge pipe 150 to prevent heat penetrating from the outside to the ash flowing into the liquid discharge pipe 150 Liquefied natural gas was prevented from evaporating.

그러나 단순히 액체 배출배관(150)의 외주면에 단열재(150a)를 설치한 것만으로는 완벽하게 외기에 노출된 액체 배출배관(150)을 단열하지 못할 뿐만 아니라, 상기 액체 배출배관(150) 내의 압력 손실만으로도 재 액화된 천연가스는 증발이 발생하기 때문에, 천연가스 재 액화기(10)에서 액화된 액화 천연가스를 화물창으로 이송하기가 매우 어렵다는 문제점이 있었다. However, simply installing the heat insulator 150a on the outer circumferential surface of the liquid discharge pipe 150 does not completely insulate the liquid discharge pipe 150 exposed to the outside air, and loses pressure in the liquid discharge pipe 150. Since the liquefied natural gas only by evaporation occurs, there was a problem that it is very difficult to transfer the liquefied natural gas from the natural gas reliquefaction machine 10 to the cargo hold.

특히 압력이 낮을 경우, 액화 천연가스를 이송하기 위하여 천연가스 이송펌프(17)를 가동시켜야 하지만, 재 액화 천연가스가 증발되어 발생된 기체에 의해 천연가스 이송펌프(17)의 운전이 불가능해 진다는 문제점이 있을 뿐만 아니라, 천연 가스 재 액화장치(1)를 초기에 기동시키기 위해서는 상기 액체 배출배관(150)을 냉각시켜야 함으로써 초기 기동 시간이 매우 오래 걸린다는 문제점이 있었다.In particular, when the pressure is low, the natural gas transfer pump 17 must be operated to transfer the liquefied natural gas, but the operation of the natural gas transfer pump 17 becomes impossible due to the gas generated by evaporating the reliquefied natural gas. In addition to the problem, there is a problem that the initial startup time is very long by cooling the liquid discharge pipe 150 in order to initially start the natural gas re-liquefaction apparatus 1.

따라서 본 발명의 목적은, 천연가스 액적분리기에서 분리된 재 액화 천연가스가 배출되는 액체 배출배관을 이중배관으로 형성하여, 상기 액체 배출배관의 외관에 냉매로 사용하는 저온 질소를 공급하여 외부에서 침투하는 열을 막을 수 있을 뿐만 아니라 재 액화 천연가스가 기화된 것을 재 응축시킬 수 있도록 하는 천연가스 재 액화장치를 제공하는 것이다.Accordingly, an object of the present invention is to form a liquid discharge pipe for discharging the reliquefied natural gas separated from the natural gas droplet separator into a double pipe, supplying low temperature nitrogen used as a refrigerant to the exterior of the liquid discharge pipe to penetrate from the outside. It is to provide a natural gas reliquefaction apparatus that can not only prevent heat, but also recondensate the vaporized reliquefaction natural gas.

상기 목적을 달성하기 위한 본 발명은, 화물창과 연결된 천연가스 재액화기와, 상기 천연가스 재 액화기와 저압질소 공급배관에 의해 연결된 질소 팽창기와, 상기 천연가스 재액화기와 연결된 천연가스 액적분리기와, 상기 액적분리기로부터 분리된 재 액화 천연가스를 화물창으로 재 유입시키는 천연가스 이송펌프를 포함하여 구성된 천연가스 재 액화장치에 있어서, 상기 천연가스 액적분리기와 내관의 일측 끝단부가 연결되며, 그 내관의 타측 끝단부는 상기 천연가스 이송펌프의 일측 끝단부와 타측이 연결된 유입차단 밸브의 일측과 연결되는 이중배관 형태의 액체 배출배관; 상기 액체 배출배관의 외관의 타측과 일측 끝단이 연결되며, 타측 끝단 은 상기 질소 팽창기와 천연가스 재액화기를 연결하는 저압질소 공급배관과 연결되는 단열용 질소 유입배관; 및 상기 액체 배출배관의 외관의 일측과 일측 끝단부가 연결되며, 타측 끝단부는 상기 천연가스 재액화기와 연결된 저압질소 회수배관과 연결되는 단열용 질소 배출배관;을 포함하여 구성된 액체증발 방지장치를 더 포함하는 천연가스 재 액화장치를 제공한다.The present invention for achieving the above object is, a natural gas reliquefaction unit connected to the cargo hold, a nitrogen expander connected by the natural gas reliquefaction group and the low-pressure nitrogen supply pipe, a natural gas droplet separator connected to the natural gas reliquefaction unit, In a natural gas reliquefaction apparatus comprising a natural gas transfer pump for re-introducing the re-liquefied natural gas separated from the droplet separator into the cargo hold, the natural gas droplet separator and one end of the inner tube is connected, the other end of the inner tube The liquid discharge pipe of the double pipe type is connected to one side of the inlet blocking valve connected to one end and the other end of the natural gas transfer pump; The other side and one end of the external appearance of the liquid discharge pipe is connected, the other end is insulated nitrogen inlet pipe connected to the low pressure nitrogen supply pipe connecting the nitrogen expander and natural gas reliquefaction; And one side end of one side of the exterior of the liquid discharge pipe is connected to one end, and the other end thereof is a heat insulating nitrogen discharge pipe connected to the low pressure nitrogen recovery pipe connected to the natural gas reliquefaction device. It provides a natural gas reliquefaction apparatus.

바람직하게는, 상기 액체증발 방지장치는, 상기 단열용 질소 유입배관에 설치된 질소 유입밸브와, 상기 단열용 질소 배출배관에 설치된 단열용 질소 배출밸브를 더 포함하여 구성된다.Preferably, the liquid evaporation preventing device further comprises a nitrogen inlet valve installed in the insulated nitrogen inlet pipe, and a heat insulation nitrogen outlet valve installed in the insulated nitrogen outlet pipe.

이상, 상술한 바와 같이 본 발명에 따른 천연가스 재 액화장치는, 액체 배출배관의 외관으로 저온 저압의 질소를 공급하는 액체증발 방지장치를 더 포함하여 구성됨으로써, 천연가스 액적분리기를 통해 분리되어 액체 배출배관의 내관으로 유입되는 재 액화 천연가스가 액체 배출배관 내에서 압력손실과 외부의 열 침투에 의해 기화되는 것을 방지하여, 배관의 냉각공정에 의해 지연되는 천연가스 재 액화장치의 초기 기동시간을 대폭 단축시킬 수 있으며, 종래에 단순히 액체 배출배관의 외주면에 단열재를 설치하여 상기 액체 배출배관을 단열시킨 것 보다 더 높은 단열 효과를 얻을 수 있을 뿐만 아니라, 액체 배출배관에서 재 액화 천연가스가 기화되더라도 저온의 질소에 의해 기화된 재 액화 천연가스를 재 응축시킬 수 있도록 하여, 액체 배출배관 내에서 발생되는 증발된 천연가스에 제약을 받지 않고 재 액화 천연가스를 이송하기 위한 천연가스 이송펌프를 가동시킬 수 있는 효과가 있다.As described above, the natural gas re-liquefaction apparatus according to the present invention further comprises a liquid evaporation prevention device for supplying nitrogen at a low temperature and low pressure to the external appearance of the liquid discharge pipe, thereby separating liquid through the natural gas droplet separator and Re-liquefied natural gas flowing into the inner pipe of the discharge pipe is prevented from vaporizing due to pressure loss and external heat penetration in the liquid discharge pipe, and the initial starting time of the natural gas reliquefaction device delayed by the cooling process of the pipe is prevented. It can be significantly shortened, and it is possible to obtain a higher insulation effect than simply insulating the liquid discharge pipe by simply installing a heat insulating material on the outer circumferential surface of the liquid discharge pipe, and even if reliquefied natural gas is vaporized in the liquid discharge pipe. Re-condensing natural liquefied natural gas vaporized by low temperature nitrogen There is an effect that can operate the natural gas transfer pump for transferring the liquefied natural gas without being limited by the evaporated natural gas generated in the inside.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다. 설명의 편의를 위하여 종래의 천연가스 재 액화장치와 동일 유사한 부분에 대해서는 동일한 도면부호를 부여하였다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, the same reference numerals are given to the same parts as in the conventional natural gas reliquefaction apparatus.

도 2는 본 발명에 따른 일실시예에 의한 천연가스 재 액화장치의 개략도이다.2 is a schematic diagram of a natural gas reliquefaction apparatus according to an embodiment according to the present invention.

도 2를 참조하면, 본 발명에 따른 천연가스 재 액화장치(1)는, 천연가스 재액화기(10), 질소 팽창기(11), 천연가스 액적분리기(12), 기체 배출배관(13), 압력 제어밸브(14), 액체증발 방지장치(15), 유입차단 밸브(16), 천연가스 이송펌프(17), 배출 차단밸브(18) 및 저압질소 회수배관(19)을 포함하여 구성된다.2, the natural gas reliquefaction apparatus 1 according to the present invention, natural gas reliquefaction apparatus 10, nitrogen expander 11, natural gas droplet separator 12, gas discharge pipe 13, pressure The control valve 14, the liquid evaporation preventing device 15, the inlet shut-off valve 16, the natural gas transfer pump 17, the discharge shutoff valve 18 and the low pressure nitrogen recovery pipe 19 is configured to include.

상기 천연가스 재 액화장치(1)의 천연가스 재액화기(10)는, 화물창(미 도시)과 연결되어 상기 화물창에서 발생된 자연 기화된 천연가스가 유입된다.The natural gas reliquefaction apparatus 10 of the natural gas reliquefaction apparatus 1 is connected to a cargo hold (not shown), and the natural vaporized natural gas generated in the cargo hold is introduced.

상기 질소 팽창기(11)는, 그 일측은 고압질소 공급배관(20) 연결되며, 타측은 상기 천연가스 재액화기(10)와 일측 끝단이 연결된 저압질소 공급배관(21)의 타측 끝단과 연결되어, 고압질소 공급배관(20)을 통해 공급되는 고압 질소를 팽창시켜 저압질소 공급배관(21)을 통해 상기 천연가스 재액화기(10) 내로 저압 질소를 유입시킬 수 있도록 한다.The nitrogen expander 11, one side thereof is connected to the high pressure nitrogen supply pipe 20, the other side is connected to the other end of the low pressure nitrogen supply pipe 21 is connected to one end of the natural gas reliquefaction 10, By expanding the high pressure nitrogen supplied through the high pressure nitrogen supply pipe 20 to allow the low pressure nitrogen to flow into the natural gas re-liquefaction 10 through the low pressure nitrogen supply pipe 21.

상기 천연가스 액적분리기(12)는, 상기 천연가스 재액화기(10)와 연결되어 천연가스 재액화기(10)에 의해 액화된 재 액화 천연가스와 재 액화되지 않은 잉여 비 응축가스를 분리하는 기능을 한다.The natural gas droplet separator 12 is connected to the natural gas reliquefaction unit 10 to separate the reliquefied natural gas liquefied by the natural gas reliquefaction unit 10 and the surplus non-condensed gas that is not reliquefied. do.

상기 기체 배출배관(13)은 상기 천연가스 액적분리기(12)와 연결되며, 상기 압력제어 밸브(14)는 상기 기체 배출배관(13)에 설치된다.The gas discharge pipe 13 is connected to the natural gas droplet separator 12, and the pressure control valve 14 is installed in the gas discharge pipe 13.

상기 액체증발 방지장치(15)는, 그 일측 일단은 상기 천연가스 액적분리기(12)와 연결되고, 일측 타단은 후술되는 천연가스 이송펌프(17)의 일측 끝단부와 타측이 연결된 유입 차단 밸브(16)의 일측과 연결되며, 그 타측 일단은 저압질소 공급배관(21)과 연결되고, 타측 타단은 저압질소 회수배관(19)과 연결된다.The liquid vaporization preventing device 15, one end thereof is connected to the natural gas droplet separator 12, the other end is connected to one end and the other end of the natural gas transfer pump 17 to be described later (inlet shutoff valve ( 16 is connected to one side, the other end is connected to the low pressure nitrogen supply pipe 21, the other end is connected to the low pressure nitrogen recovery pipe 19.

즉, 상기 액체증발 방지장치(15)는, 상기 천연가스 액적분리기(12)와 내관의 일측 끝단부가 연결되며, 그 내관의 타측 끝단부는 상기 천연가스 이송펌프(17)의 일측 끝단부와 타측이 연결된 유입차단 밸브(16)의 일측과 연결되는 이중배관 형태의 액체 배출배관(150)과, 상기 액체 배출배관(150)의 외관의 타측과 일측 끝단이 연결되며, 타측 끝단은 상기 질소 팽창기(11)와 천연가스 재액화기(10)를 연결하는 저압질소 공급배관(21)과 연결되는 단열용 질소 유입배관(151) 및, 상기 액체 배출배관(150)의 외관의 일측과 일측 끝단부가 연결되며, 타측 끝단부는 상기 천연가스 재액화기(10)와 연결된 저압질소 회수배관(19)과 연결되는 단열용 질소 배출배관(152)을 포함하여 구성된다.That is, the liquid vaporization preventing device 15 is connected to one end of the inner gas droplet separator 12 and the inner tube, the other end of the inner tube is one end and the other side of the natural gas transfer pump 17 The liquid discharge pipe 150 of the double pipe type connected to one side of the inlet shutoff valve 16 is connected, and the other end and one end of the appearance of the liquid discharge pipe 150 is connected, the other end is the nitrogen expander (11) Insulating nitrogen inlet pipe 151 is connected to the low pressure nitrogen supply pipe 21 for connecting the natural gas reliquefaction system (10) and one side and one end of the exterior of the liquid discharge pipe 150 is connected, The other end portion is configured to include a nitrogen exhaust pipe 152 for insulation connected to the low pressure nitrogen recovery pipe 19 connected to the natural gas reliquefaction system (10).

또한, 상기 액체증발 방지장치(15)는, 상기 단열용 질소 유입배관(151)에 설치된 질소 유입밸브(153)와, 상기 단열용 질소 배출배관(152)에 설치된 단열용 질소 배출밸브(154)를 더 포함하여 구성된다.In addition, the liquid evaporation preventing device 15, the nitrogen inlet valve 153 provided in the insulated nitrogen inlet pipe 151, and the insulated nitrogen outlet valve 154 provided in the insulated nitrogen outlet pipe 152. It is configured to further include.

상기 유입차단 밸브(16)는, 상기 액체증발 방지장치(15)의 일측단 타측과 연결된다.The inlet blocking valve 16 is connected to the other end of one side of the liquid evaporation preventing device 15.

상기 천연가스 이송펌프(17)는, 상기 유입차단 밸브(16)와 연결되며, 상기 배출차단 밸브(18)는 상기 천연가스 이송 펌프(17)와 연결된다.The natural gas transfer pump 17 is connected to the inlet shutoff valve 16, and the discharge shutoff valve 18 is connected to the natural gas transfer pump 17.

다시, 도 2를 참조하여 본 발명에 따른 천연가스 재 액화장치의 작동을 설명하면 다음과 같다.Again, referring to Figure 2 describes the operation of the natural gas reliquefaction apparatus according to the present invention.

도 2를 참조하면, 화물창(미 도시)에서 자연 기화된 천연가스는 천연가스 재액화기(10)로 유입된다.Referring to FIG. 2, natural gas vaporized in a cargo hold (not shown) is introduced into the natural gas reliquefaction unit 10.

상기와 같이 천연가스 재액화기(10)로 유입된 기화 천연가스는, 고압질소 공급배관(20)을 통해 질소 팽창기(11)로 공급되어 팽창된 후 저압질소 공급배관(21)을 거쳐 천연가스 재액화기(10) 내로 유입되는 저온의 저압 질소와 열 교환되어 재 액화된 후 천연가스 액적분리기(12)로 공급된다.As described above, the vaporized natural gas introduced into the natural gas reliquefaction unit 10 is supplied to the nitrogen expander 11 through the high pressure nitrogen supply pipe 20, expanded, and then re-liquefied natural gas through the low pressure nitrogen supply pipe 21. It is heat exchanged with low-temperature low-pressure nitrogen flowing into the fire extinguisher 10 to be liquefied and then supplied to the natural gas droplet separator 12.

상기와 같이 천연가스 재액화기(10)에 의해 재 액화된 후 천연가스 액적분리기(12)로 공급된 천연가스는, 응축된 액체 상태와 비 응축된 기체 상태의 천연가스가 섞여 있는 상태이므로, 상기 천연가스 액적분리기(12)를 통해 비 응축 천연가스와 재 액화 천연가스로 분리된다.Natural gas supplied to the natural gas droplet separator 12 after re-liquefying by the natural gas reliquefaction unit 10 as described above, because the natural gas of the condensed liquid state and the non-condensed gas state is mixed, The natural gas droplet separator 12 separates the non-condensed natural gas and the reliquefied natural gas.

상기와 같이 천연가스 액적분리기(12)를 통해 분리된 비 응축 천연가스는 기체 배출배관(13)을 통해 배출되고, 재 액화 천연가스는 천연가스 이송펌프(17)가 작동됨에 따라 액체 배출배관(150)의 내관, 유입 차단밸브(16), 천연가스 이송펌 프(17) 및, 배출차단 밸브(18)를 순차적으로 거쳐 화물창으로 재 유입된다.As described above, the non-condensed natural gas separated through the natural gas droplet separator 12 is discharged through the gas discharge pipe 13, and the reliquefied natural gas is a liquid discharge pipe as the natural gas transfer pump 17 operates. Through the inner pipe, the inlet shutoff valve 16, the natural gas transfer pump 17, and the discharge cutoff valve 18 of the 150 is sequentially introduced into the cargo hold.

상기와 같이 액체 배출배관(150)의 내관으로 재 액화 천연가스가 유입됨과 동시에 단열용 질소 유입밸브(153)가 개방됨으로써 단열용 질소 유입배관(151)을 통해 질소 팽창기(11)에 의해 팽창된 저압 질소가 상기 액체 배출배관(150)의 외관으로 유입되어 흐르도록 하여, 외부에서 침투하는 열을 차단할 뿐만 아니라 액체 배출배관(150) 내에서의 압력 손실에 의하여 증발되는 재 액화 천연가스를 재 응축 시킬 수 있도록 한다.As the liquefied natural gas is introduced into the inner pipe of the liquid discharge pipe 150 as described above, the nitrogen inlet valve 153 for thermal insulation is opened, thereby expanding by the nitrogen expander 11 through the nitrogen inlet piping 151 for thermal insulation. The low pressure nitrogen flows into the exterior of the liquid discharge pipe 150 to not only block heat penetrating from the outside, but also recondensate the reliquefied natural gas evaporated by the pressure loss in the liquid discharge pipe 150. Make it work.

상기와 같이 액체 배출배관(150)의 외관으로 유입되어 흐른 저압 질소는 단열용 질소 배출배관(152)을 거쳐 저압질소 회수배관(19)을 통해 회수된다.As described above, the low pressure nitrogen flowing into the exterior of the liquid discharge pipe 150 is recovered through the low pressure nitrogen recovery pipe 19 through the heat insulating nitrogen discharge pipe 152.

본 발명에 따른 천연가스 재 액화장치(1)는, 액체 배출배관(150)의 외관으로 저온 저압의 질소를 공급하는 액체증발 방지장치(15)를 더 포함하여 구성됨으로써, 천연가스 액적분리기(12)를 통해 분리되어 액체 배출배관(150)의 내관으로 유입되는 재 액화 천연가스가 액체 배출배관(150) 내에서 압력손실과 외부의 열 침투에 의해 기화되는 것을 방지하여, 액체 배출배관(150)의 냉각공정에 의해 지연되는 천연가스 재 액화장치(1)의 초기 기동시간을 대폭 단축시킬 수 있으며, 종래에 단순히 액체 배출배관(150)의 외주면에 단열재를 설치하여 상기 액체 배출배관(150)을 단열시킨 것 보다 더 높은 단열 효과를 얻을 수 있을 뿐만 아니라, 액체 배출배관(150)에서 재 액화 천연가스가 기화되더라도 저온의 질소에 의해 기화된 재 액화 천연가스를 재 응축시킬 수 있도록 하여, 액체 배출배관(150) 내에서 발생되는 증발된 천연가스에 제약을 받지 않고 재 액화 천연가스를 이송하기 위한 천연가스 이 송펌프(17)를 가동시킬 수 있는 효과가 있다.The natural gas re-liquefaction apparatus 1 according to the present invention further comprises a liquid evaporation preventing device 15 for supplying nitrogen at low temperature and low pressure to the external appearance of the liquid discharge pipe 150, whereby the natural gas droplet separator 12 Re-liquefied natural gas that is separated through the through) into the inner pipe of the liquid discharge pipe 150 is prevented from being vaporized by pressure loss and external heat penetration in the liquid discharge pipe 150, the liquid discharge pipe 150 The initial start-up time of the natural gas re-liquefaction apparatus 1, which is delayed by the cooling process, can be greatly shortened. In the related art, the liquid discharge pipe 150 is formed by simply installing an insulating material on the outer circumferential surface of the liquid discharge pipe 150. Not only can a higher insulation effect be obtained than insulated, but even if the reliquefied natural gas is vaporized in the liquid discharge pipe 150, the reliquefied natural gas vaporized by low temperature nitrogen can be recondensed. And, there is an effect that gas is able to start the transmission pump 17 for transferring the re-liquefied natural gas without being limited by the evaporated gas generated in the liquid discharge pipe (150).

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

도 1은 종래의 천연가스 재 액화장치에 대한 개략도.1 is a schematic diagram of a conventional natural gas reliquefaction apparatus.

도 2는 본 발명에 따른 일실시예에 의한 천연가스 재 액화장치의 개략도.Figure 2 is a schematic diagram of a natural gas re-liquefaction apparatus according to an embodiment according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

(1) : 천연가스 재 액화장치 (10) : 천연가스 재액화기(1): natural gas reliquefaction apparatus (10): natural gas reliquefaction apparatus

(11) : 질소 팽창기 (12) : 천연가스 액적분리기(11): nitrogen expander (12): natural gas droplet separator

(13) : 기체 배출배관 (14) : 압력 제어밸브(13): gas exhaust pipe (14): pressure control valve

(15) : 액체증발 방지장치 (16) : 유입 차단밸브(15): Liquid evaporation prevention device (16): Inlet shutoff valve

(17) : 천연가스 이송펌프 (18) : 배출 차단밸브(17): natural gas transfer pump (18): discharge shutoff valve

(19) : 저압질소 회수배관 (20) : 고압질소 공급배관(19): low pressure nitrogen recovery piping (20): high pressure nitrogen supply piping

(21) : 저압질소 공급배관 (150) : 액체 배출배관(21): low pressure nitrogen supply pipe (150): liquid discharge pipe

(151) : 단열용 질소유입 배관 (152) : 단열용 질소배출 배관151: nitrogen inlet pipe for insulation (152): nitrogen outlet pipe for insulation

(153) : 단열용 질소유입 밸브 (154) : 단열용 질소배출 밸브153: nitrogen inlet valve for heat insulation 154: nitrogen outlet valve for heat insulation

Claims (2)

화물창과 연결된 천연가스 재액화기와, 상기 천연가스 재 액화기와 저압질소 공급배관에 의해 연결된 질소 팽창기와, 상기 천연가스 재액화기와 연결된 천연가스 액적분리기와, 상기 액적분리기로부터 분리된 재 액화 천연가스를 화물창으로 재 유입시키는 천연가스 이송펌프를 포함하여 구성된 천연가스 재 액화장치에 있어서,A natural gas reliquefaction unit connected to the cargo hold, a nitrogen expander connected by the natural gas reliquefaction unit and a low pressure nitrogen supply pipe, a natural gas droplet separator connected to the natural gas reliquefaction unit, and a reliquefied natural gas separated from the droplet separator. In the natural gas re-liquefaction apparatus comprising a natural gas transfer pump to re-flow into the cargo hold, 상기 천연가스 액적분리기와 내관의 일측 끝단부가 연결되며, 그 내관의 타측 끝단부는 상기 천연가스 이송펌프의 일측 끝단부와 타측이 연결된 유입차단 밸브의 일측과 연결되는 이중배관 형태의 액체 배출배관;One end of the inner gas droplet separator and the inner pipe is connected, the other end of the inner pipe of the liquid discharge pipe of the double pipe type connected to one end of the inlet shut-off valve connected to one end and the other side of the natural gas transfer pump; 상기 액체 배출배관의 외관의 타측과 일측 끝단이 연결되며, 타측 끝단은 상기 질소 팽창기와 천연가스 재액화기를 연결하는 저압질소 공급배관과 연결되는 단열용 질소 유입배관;The other side and one end of the external appearance of the liquid discharge pipe is connected, the other end is insulated nitrogen inlet pipe connected to the low pressure nitrogen supply pipe connecting the nitrogen expander and natural gas reliquefaction; 상기 액체 배출배관의 외관의 일측과 일측 끝단부가 연결되며, 타측 끝단부는 상기 천연가스 재액화기와 연결된 저압질소 회수배관과 연결되는 단열용 질소 배출배관; One end and one end of the external appearance of the liquid discharge pipe is connected, the other end is insulated nitrogen discharge pipe connected to the low pressure nitrogen recovery pipe connected to the natural gas reliquefaction; 상기단열용 질소 유입배관에 설치된 질소 유입밸브; 및A nitrogen inlet valve installed in the insulation nitrogen inlet pipe; And 상기 단열용 질소 배출배관에 설치된 단열용 질소 배출밸브로 구성된 액체증발 방지장치를 더 포함하는 천연가스 재 액화장치.Natural gas re-liquefaction apparatus further comprises a liquid evaporation prevention device consisting of a nitrogen discharge valve for heat insulation is installed in the heat insulating nitrogen discharge pipe. 삭제delete
KR1020070096536A 2007-09-21 2007-09-21 Re-liquefaction Unit of Natural Boil-Off Gas KR100894013B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070096536A KR100894013B1 (en) 2007-09-21 2007-09-21 Re-liquefaction Unit of Natural Boil-Off Gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070096536A KR100894013B1 (en) 2007-09-21 2007-09-21 Re-liquefaction Unit of Natural Boil-Off Gas

Publications (2)

Publication Number Publication Date
KR20090030879A KR20090030879A (en) 2009-03-25
KR100894013B1 true KR100894013B1 (en) 2009-04-17

Family

ID=40697113

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070096536A KR100894013B1 (en) 2007-09-21 2007-09-21 Re-liquefaction Unit of Natural Boil-Off Gas

Country Status (1)

Country Link
KR (1) KR100894013B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150101579A (en) 2014-02-27 2015-09-04 삼성중공업 주식회사 Natural gas liquefaction apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6600247B2 (en) * 2015-11-06 2019-10-30 川崎重工業株式会社 Ship
JP6600248B2 (en) * 2015-12-18 2019-10-30 川崎重工業株式会社 Ship

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH056299U (en) * 1991-07-10 1993-01-29 石川島播磨重工業株式会社 Reliquefaction device for low temperature tank
JPH10205698A (en) 1997-01-20 1998-08-04 Nkk Corp Liquefied natural gas storage tank
KR100747231B1 (en) * 2006-10-04 2007-08-07 대우조선해양 주식회사 Apparatus and method for reliquefying boil-off gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH056299U (en) * 1991-07-10 1993-01-29 石川島播磨重工業株式会社 Reliquefaction device for low temperature tank
JPH10205698A (en) 1997-01-20 1998-08-04 Nkk Corp Liquefied natural gas storage tank
KR100747231B1 (en) * 2006-10-04 2007-08-07 대우조선해양 주식회사 Apparatus and method for reliquefying boil-off gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150101579A (en) 2014-02-27 2015-09-04 삼성중공업 주식회사 Natural gas liquefaction apparatus

Also Published As

Publication number Publication date
KR20090030879A (en) 2009-03-25

Similar Documents

Publication Publication Date Title
CN102084171B (en) Methods and configuration of boil-off gas handling in LNG regasification terminals
KR101613236B1 (en) Vessel Including Engines and Method of Reliquefying Boil-Off Gas for The Same
JP2009030675A (en) Device and method for re-liquefying gas
KR101670925B1 (en) Lng boil off gas reliquefaction system and method of the same
KR100804953B1 (en) Apparatus and method for reliquefying boil-off gas capable of refrigeration load variable operation
KR20060123675A (en) Lng bog reliquefaction apparatus and lng bog reliquefaction method
KR101701713B1 (en) Fuel supply system
KR101711997B1 (en) Fuel supply system
JP5794509B2 (en) Boil-off gas reliquefaction apparatus and method
KR100747372B1 (en) Bog reliquefaction apparatus and method
KR100894013B1 (en) Re-liquefaction Unit of Natural Boil-Off Gas
US20200393196A1 (en) Device and method for processing boil-off gas in liquefied gas regasification system
KR20170068190A (en) Vessel Including Engines
KR100804954B1 (en) Apparatus and method for reliquefying boil-off gas capable of stabilizing operation start-up
JP2009191945A (en) Liquefied gas storage system and operating method thereof
KR101665479B1 (en) BOG Re-liquefaction Apparatus and Method for Vessel
JP2019509929A (en) Ship
KR100777560B1 (en) Apparatus and method for reliquefying boil-off gas capable of pre-performance test
KR101895788B1 (en) Vessel
KR101739985B1 (en) BOG Re-liquefaction Apparatus and Method for Vessel
KR102030197B1 (en) Liquefied Natural Gas gasification facility using multi-heatexchanger
JP2002338977A (en) Process and apparatus for reliquefying boil-off gas from liquefied natural gas
KR101675878B1 (en) Device and method for re-liquefying BOG
KR101699326B1 (en) System for treating boil-off gas for a ship
KR101977969B1 (en) A Gas Treatment System Of Boil-off Gas And Flash Gas Of LNG For LNG FPSO

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120409

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20140404

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20160325

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20170403

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee