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KR20230143208A - Fuel providing system used for ship, and liquefied gas fueled ship having the same - Google Patents

Fuel providing system used for ship, and liquefied gas fueled ship having the same Download PDF

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Publication number
KR20230143208A
KR20230143208A KR1020220040359A KR20220040359A KR20230143208A KR 20230143208 A KR20230143208 A KR 20230143208A KR 1020220040359 A KR1020220040359 A KR 1020220040359A KR 20220040359 A KR20220040359 A KR 20220040359A KR 20230143208 A KR20230143208 A KR 20230143208A
Authority
KR
South Korea
Prior art keywords
gas
refrigerant
fuel supply
boil
storage tank
Prior art date
Application number
KR1020220040359A
Other languages
Korean (ko)
Inventor
박아민
류시진
전준우
정승재
최병윤
Original Assignee
삼성중공업 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 삼성중공업 주식회사 filed Critical 삼성중공업 주식회사
Priority to KR1020220040359A priority Critical patent/KR20230143208A/en
Publication of KR20230143208A publication Critical patent/KR20230143208A/en

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    • 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
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • 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
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • 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
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • 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
    • 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
    • F25J1/0032—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return 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
    • 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
    • F25J1/0052—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 vaporising a liquid refrigerant 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
    • 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
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
    • F25J1/0265—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer
    • 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
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0277—Offshore use, e.g. during shipping
    • 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.
    • F25J1/0292—Refrigerant compression by cold or cryogenic suction of the refrigerant gas
    • 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
    • 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
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another 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
    • F17C2265/031—Treating the boil-off by discharge
    • 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
    • F17C2265/033—Treating the boil-off by recovery with cooling
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/038—Treating the boil-off by recovery with expanding
    • 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
    • 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
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/04—Mixing or blending of fluids with 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
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/60—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being (a mixture of) hydrocarbons
    • 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
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels

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

Abstract

Disclosed are a fuel supply system for a ship and a liquefied gas-fueled ship having the same, which converts and supplies liquefied gas from a storage tank according to a fuel supply condition of a low-pressure demander. The fuel supply system for a ship provided by an embodiment of the present invention comprises: a storage tank which stores liquefied gas and evaporated gas thereof; a gas compression unit which compresses the evaporated gas supplied through an evaporated gas supply line from the storage tank according to a fuel supply condition of a first demander; a liquefaction unit which liquefies fluids that have exceeded the fuel supply amount of the first demander in the compressed evaporated gas and includes first and second heat exchangers; a first fuel supply line which supplies at least some of the evaporated gas that has passed through the gas compression unit to the first demander as fuel of the first demander; a second fuel supply line which supplies at least some of the liquefied gas supplied from the storage tank through the first heat exchanger to a second demander that requires a higher pressure than the first demander; a refrigerant cooling unit which is provided in the second fuel supply line and cools a refrigerant by performing heat exchange between the evaporated gas and refrigerant; and a refrigerant circulation line which is provided with a refrigerant compressor for compressing the refrigerant and a refrigerant expander for decompressing the refrigerant, and circulates and supplies the refrigerant to the second heat exchanger, refrigerant compressor, refrigerant cooling unit, and refrigerant expander.

Description

선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박{FUEL PROVIDING SYSTEM USED FOR SHIP, AND LIQUEFIED GAS FUELED SHIP HAVING THE SAME}Marine fuel supply system and liquefied gas fuel propulsion vessel equipped with the same {FUEL PROVIDING SYSTEM USED FOR SHIP, AND LIQUEFIED GAS FUELED SHIP HAVING THE SAME}

본 발명은 선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박에 관한 것이다.The present invention relates to a marine fuel supply system and a liquefied gas fuel propulsion ship equipped with the same.

온실가스 및 각종 대기오염 물질의 배출에 대한 국제해사기구(IMO, International Maritime Organization)의 규제가 강화됨에 따라 조선 및 해운업계에서는 기존 연료인 중유, 디젤유의 이용을 대신하여, 청정 에너지원인 천연가스를 선박의 연료가스로 이용하는 경우가 많아지고 있다.As the International Maritime Organization (IMO)'s regulations on the emission of greenhouse gases and various air pollutants are strengthened, the shipbuilding and shipping industry is using natural gas, a clean energy source, instead of using existing fuels such as heavy oil and diesel oil. It is increasingly being used as fuel gas for ships.

연료가스 중에서 널리 이용되고 있는 천연가스(Natural Gas)는 메탄(Methane)을 주성분으로 하며, 통상적으로 그 부피를 1/600로 줄인 액화가스(Liquefied Gas) 상태로 변환되어 저장탱크에 저장된다.Natural gas, which is widely used among fuel gases, contains methane as its main ingredient, and is usually converted to liquefied gas with its volume reduced to 1/600 and stored in a storage tank.

액화가스가 저장된 저장탱크 내부에서는 외부의 열 유입에 따라 증발가스가 발생하며, 이는 수요처의 연료로 공급될 수 있으나 수요처가 필요로 하는 연료공급량을 초과한 유량에 대해서는 재액화하여 저장탱크로 회수할 필요성이 있다.Inside the storage tank where the liquefied gas is stored, evaporation gas is generated due to the influx of external heat. This can be supplied as fuel to the customer, but if the flow rate exceeds the fuel supply required by the customer, it can be re-liquefied and recovered to the storage tank. There is a need.

또, 저장탱크에서 발생한 증발가스는 5단 내외의 다단 압축기를 포함하는 압축부를 거쳐 고압(대략 300barg)으로 압축된 후, 고압 분사엔진의 연료로 공급될 수 있다. 이때, 고압의 압축부와 연관된 배관 등의 각종 설비는 고압에 견딜 수 있도록 그에 맞게 설계되어야 하며, 운전 정지 시 내부 정지 압력(Settle-out Pressure)을 낮추기 위해 별도의 대용량 가스 탱크가 적용될 수 있다.In addition, the evaporation gas generated in the storage tank can be compressed to high pressure (approximately 300 barg) through a compression unit including a multi-stage compressor of about 5 stages and then supplied as fuel for a high-pressure injection engine. At this time, various facilities such as piping related to the high-pressure compression section must be designed accordingly to withstand high pressure, and a separate large-capacity gas tank can be applied to lower the internal settle-out pressure when the operation is stopped.

또, 압축부를 거쳐 고압으로 압축된 증발가스는 발전기 및 보일러와 같은 저압 연료를 필요로 하는 저압 수요처로 공급될 수 있다. 이를 위해 고압으로 압축된 증발가스를 팽창시켜 8barg 내외의 저압 가스로 변환시켜야 하며, 대량 감압으로 인해 가스 온도가 급격하게 강하하는 것을 보상하기 위해 가열기가 사용될 수 있다.In addition, the boil-off gas compressed to high pressure through the compression unit can be supplied to low-pressure consumers that require low-pressure fuel, such as generators and boilers. To achieve this, the boil-off gas compressed at high pressure must be expanded and converted into low-pressure gas of around 8 barg, and a heater can be used to compensate for the rapid drop in gas temperature due to mass decompression.

이와 같이, 종래에는 고압으로 압축된 증발가스를 저압 수요처의 연료로 공급하기 위해 대량의 감압을 수행하는 등 전체 연료공급시스템 운영에 있어서 비효율적인 문제점이 있다.As such, in the past, there was an inefficient problem in operating the entire fuel supply system, such as performing a large amount of decompression in order to supply boil-off gas compressed at high pressure as fuel to low-pressure consumers.

관련 기술로서, 종래의 한국등록특허 제10-1613236호(2016.04.11 등록)를 참조하기 바란다.As related technology, please refer to the existing Korean Patent No. 10-1613236 (registered on April 11, 2016).

한국등록특허 제10-1613236호(2016.04.11 등록)Korean Patent No. 10-1613236 (registered on April 11, 2016)

본 발명의 실시 예는 저장탱크로부터 공급된 증발가스의 액화에 냉매의 냉열을 활용하고, 냉매의 냉각에 저장탱크로부터 공급된 액화가스를 활용하는 선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박을 제공하고자 한다.An embodiment of the present invention is a marine fuel supply system that utilizes the cold heat of the refrigerant to liquefy the boil-off gas supplied from the storage tank and uses the liquefied gas supplied from the storage tank to cool the refrigerant, and a liquefied gas fuel propulsion ship equipped with the same We would like to provide.

또, 저장탱크로부터 공급받은 증발가스를 저압으로 압축하여 저압 수요처로 공급함으로써 운용 효율성을 높일 수 있는 선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박을 제공하고자 한다.In addition, we aim to provide a marine fuel supply system that can increase operational efficiency by compressing boil-off gas supplied from a storage tank to low pressure and supplying it to low-pressure consumers, and a liquefied gas fuel propulsion ship equipped with the same.

또, 저장탱크로부터 공급받은 액화가스를 저압 수요처의 연료공급조건에 맞게 변환하여 공급할 수 있는 선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박을 제공하고자 한다.In addition, it is intended to provide a marine fuel supply system that can convert and supply liquefied gas supplied from a storage tank to suit the fuel supply conditions of low-pressure demand and a liquefied gas fuel propulsion ship equipped with the same.

본 발명의 일 측면에 따르면, 액화가스 및 이의 증발가스를 저장하는 저장탱크; 상기 저장탱크로부터 증발가스공급라인을 통해 공급받은 증발가스를 제1수요처의 연료공급조건에 맞게 압축시키는 가스압축부; 상기 압축된 증발가스 중 상기 제1수요처의 연료공급량을 초과한 유량을 액화시키며, 제1열교환기와 제2열교환기를 포함하는 액화부; 상기 가스압축부를 통과한 증발가스 중 적어도 일부를 상기 제1수요처의 연료로 공급하는 제1연료공급라인; 상기 저장탱크로부터 공급받은 액화가스 중 적어도 일부를 상기 제1열교환기를 거쳐 상기 제1수요처보다 높은 압력을 필요로 하는 제2수요처로 공급하는 제2연료공급라인; 상기 제2연료공급라인에 마련되며, 상기 액화가스와 냉매 간 열교환을 수행하여 상기 냉매를 냉각시키는 냉매냉각부; 및 상기 냉매를 압축시키는 냉매압축기와 상기 냉매를 감압시키는 냉매팽창기를 마련하고, 상기 냉매를 상기 제2열교환기, 냉매압축기, 냉매냉각부 및 냉매팽창기로 순환 공급하는 냉매순환라인;을 포함하는 선박용 연료공급시스템이 제공될 수 있다.According to one aspect of the present invention, a storage tank for storing liquefied gas and its boil-off gas; A gas compression unit that compresses the boil-off gas supplied from the storage tank through the boil-off gas supply line to suit the fuel supply conditions of the first consumer; A liquefaction unit that liquefies a flow rate of the compressed boil-off gas exceeding the fuel supply amount of the first consumer and includes a first heat exchanger and a second heat exchanger; a first fuel supply line that supplies at least a portion of the boil-off gas that has passed through the gas compression unit as fuel to the first consumer; a second fuel supply line that supplies at least a portion of the liquefied gas supplied from the storage tank to a second demand source requiring a higher pressure than the first demand source through the first heat exchanger; a refrigerant cooling unit provided in the second fuel supply line and cooling the refrigerant by performing heat exchange between the liquefied gas and the refrigerant; and a refrigerant circulation line that provides a refrigerant compressor for compressing the refrigerant and a refrigerant expander for depressurizing the refrigerant, and circulates the refrigerant to the second heat exchanger, the refrigerant compressor, the refrigerant cooling unit, and the refrigerant expander. A fuel supply system may be provided.

상기 제2연료공급라인은 상기 제1열교환기를 통과한 유체를 상기 제2수요처의 연료공급조건에 맞게 압축시키는 가압펌프와, 상기 압축된 유체를 상기 제2수요처의 연료공급조건에 맞게 기화시키는 기화기를 마련하며, 상기 냉매냉각부는 상기 가압펌프와 가열기 사이에 마련될 수 있다.The second fuel supply line includes a pressurizing pump that compresses the fluid that has passed through the first heat exchanger to suit the fuel supply conditions of the second demand source, and a vaporizer that vaporizes the compressed fluid to suit the fuel supply conditions of the second demand source. , and the refrigerant cooling unit may be provided between the pressurizing pump and the heater.

상기 증발가스공급라인에 마련되며, 상기 제2열교환기를 통과한 유체를 팽창시키는 후단팽창기를 더 포함하고, 상기 증발가스공급라인은 상기 저장탱크, 가스압축부, 액화부, 후단팽창기를 연결하며, 상기 팽창된 유체는 상기 저장탱크로 회수될 수 있다.It is provided in the boil-off gas supply line and further includes a rear-end expander that expands the fluid that has passed through the second heat exchanger, and the boil-off gas supply line connects the storage tank, the gas compression section, the liquefaction section, and the rear-end expander, The expanded fluid may be returned to the storage tank.

상기 후단팽창기의 후단에 마련되며, 상기 팽창된 유체를 기액 분리시키는 기액분리기를 더 포함하고, 상기 분리된 기체성분은 상기 증발가스공급라인의 히터 전단으로 합류되고, 상기 분리된 액체성분은 상기 저장탱크로 회수될 수 있다.It is provided at the rear end of the rear end expander and further includes a gas-liquid separator that separates the expanded fluid from gas and liquid, wherein the separated gas component is joined to the front end of the heater of the boil-off gas supply line, and the separated liquid component is stored in the storage. It can be returned to the tank.

상기 가스압축부는 상기 저장탱크로부터 공급받은 증발가스를 가열시키는 히터와, 상기 히터에 의해 가열된 증발가스를 상기 제1수요처의 연료공급조건에 맞게 저압으로 압축시키는 저압압축기와, 상기 압축된 증발가스를 냉각시키는 증발가스냉각기를 포함하고, 상기 제1연료공급라인은 상기 증발가스공급라인의 저압압축기 후단으로부터 분기되어 상기 제1수요처와 연결되고, 상기 저압압축기에 의해 압축된 증발가스를 상기 제1수요처의 연료공급조건에 맞게 가열시키는 가열기를 마련할 수 있다.The gas compression unit includes a heater that heats the boil-off gas supplied from the storage tank, a low-pressure compressor that compresses the boil-off gas heated by the heater to a low pressure in accordance with the fuel supply conditions of the first consumer, and the compressed boil-off gas. It includes a boil-off gas cooler that cools the boil-off gas cooler, wherein the first fuel supply line is branched from the rear end of the low-pressure compressor of the boil-off gas supply line and connected to the first demand source, and the boil-off gas compressed by the low-pressure compressor is supplied to the first fuel supply line. A heater that heats the fuel according to the fuel supply conditions of the customer can be provided.

본 발명의 다른 측면에 따르면, 상술한 연료공급시스템을 구비한 액화가스 연료 추진 선박이 제공될 수 있다.According to another aspect of the present invention, a liquefied gas fuel propulsion ship equipped with the above-described fuel supply system can be provided.

본 발명의 실시 예에 의한 선박용 연료공급시스템 및 이를 구비한 액화가스 연료 추진 선박은 저장탱크로부터 공급된 증발가스의 액화에 냉매의 냉열을 활용하고, 냉매의 냉각에 저장탱크로부터 공급된 액화가스를 활용할 수 있다.The marine fuel supply system according to an embodiment of the present invention and the liquefied gas fuel propulsion ship equipped with the same utilize the cold heat of the refrigerant to liquefy the boil-off gas supplied from the storage tank and use the liquefied gas supplied from the storage tank to cool the refrigerant. You can utilize it.

또, 저장탱크로부터 공급받은 증발가스를 저압으로 압축하여 저압 수요처로 공급함으로써 운용 효율성을 높일 수 있다.In addition, operational efficiency can be increased by compressing the boil-off gas supplied from the storage tank to low pressure and supplying it to low-pressure consumers.

또, 저장탱크로부터 공급받은 액화가스를 저압 수요처의 연료공급조건에 맞게 변환하여 공급할 수 있다.In addition, the liquefied gas supplied from the storage tank can be converted and supplied to suit the fuel supply conditions of the low-pressure consumer.

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

도 1은 본 발명의 실시 예에 의한 선박용 연료공급시스템을 도시한다.
도 2는 도 1의 선박용 연료공급시스템의 다른 예를 도시한 것이다.Figure 1 shows a fuel supply system for ships according to an embodiment of the present invention.
Figure 2 shows another example of the marine fuel supply system of Figure 1.

이하에서는 본 발명의 실시 예들을 첨부 도면을 참조하여 상세히 설명한다. 이하에 소개되는 실시 예들은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 본 발명의 사상이 충분히 전달될 수 있도록 하기 위해 예로서 제공되는 것이다. 본 발명은 이하 설명되는 실시 예들에 한정되지 않고 다른 형태로 구체화될 수도 있다. 본 발명을 명확하게 설명하기 위하여 설명과 관계없는 부분은 도면에서 생략하였으며 도면들에 있어서, 구성요소의 폭, 길이, 두께 등은 편의를 위하여 과장되어 표현될 수 있다. 명세서 전체에 걸쳐서 동일한 참조번호들은 동일한 구성요소들을 나타낸다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples so that the idea of the present invention can be sufficiently conveyed to those skilled in the art. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of components may be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

도 1은 본 발명의 실시 예에 의한 선박용 연료공급시스템을 도시한다.Figure 1 shows a fuel supply system for ships according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 실시 예에 따른 선박용 연료공급시스템(100)은 액화가스 및 이의 증발가스를 저장하는 저장탱크(101)와, 저장탱크(101)로부터 증발가스공급라인(L11)을 통해 공급받은 증발가스를 제1수요처(E1)의 연료공급조건에 맞게 압축시키는 가스압축부(110)와, 가스압축부(110)에 의해 압축된 증발가스 중 제1수요처(E1)의 연료공급량을 초과한 유량을 액화시키며, 제1열교환기(121)와 제2열교환기(122)를 포함하는 액화부(120)와, 가스압축부(110)를 통과한 증발가스 중 적어도 일부를 제1수요처(E1)의 연료로 공급하는 제1연료공급라인(L12)과, 저장탱크(101)로부터 공급받은 액화가스 중 적어도 일부를 제1열교환기(121)를 거쳐 제1수요처(E1)보다 높은 압력을 필요로 하는 제2수요처(E2)로 공급하는 제2연료공급라인(L13)과, 제2연료공급라인(L13)에 마련되며, 액화가스와 냉매 간 열교환을 수행하여 냉매를 냉각시키는 냉매냉각부(155)와, 냉매를 압축시키는 냉매압축기(135)와 냉매를 감압시키는 냉매팽창기(137)를 마련하고, 냉매를 제2열교환기(122), 냉매압축기(135), 냉매냉각부(155) 및 냉매팽창기(137)로 순환 공급하는 냉매순환라인(L14)을 포함할 수 있다.Referring to Figure 1, the marine fuel supply system 100 according to an embodiment of the present invention includes a storage tank 101 for storing liquefied gas and its boil-off gas, and a boil-off gas supply line (L11) from the storage tank 101. A gas compression unit 110 that compresses the boil-off gas supplied through to suit the fuel supply conditions of the first consumer (E1), and fuel of the first consumer (E1) among the boil-off gas compressed by the gas compression unit 110 The flow rate exceeding the supply amount is liquefied, and at least a portion of the boil-off gas that has passed through the liquefaction unit 120 including the first heat exchanger 121 and the second heat exchanger 122 and the gas compression unit 110 is liquefied. At least part of the liquefied gas supplied from the first fuel supply line (L12), which supplies fuel to the first consumer (E1), and the storage tank (101) is passed through the first heat exchanger (121) to the first consumer (E1). It is provided in the second fuel supply line (L13) and a second fuel supply line (L13) that supplies to the second demand source (E2) that requires high pressure, and cools the refrigerant by performing heat exchange between the liquefied gas and the refrigerant. A refrigerant cooling unit 155, a refrigerant compressor 135 for compressing the refrigerant, and a refrigerant expander 137 for decompressing the refrigerant are provided, and the refrigerant is supplied to the second heat exchanger 122, the refrigerant compressor 135, and the refrigerant cooling unit. (155) and a refrigerant circulation line (L14) that circulates and supplies refrigerant to the expander (137).

또, 제2연료공급라인(L13)은 제1열교환기(121)를 통과한 유체를 제2수요처(E2)의 연료공급조건에 맞게 압축시키는 가압펌프(150)와, 가압펌프(150)에 의해 압축된 유체를 제2수요처(E2)의 연료공급조건에 맞게 기화시키는 기화기(160)를 마련하며, 냉매냉각부(155)는 가압펌프(150)와 기화기(160) 사이에 마련될 수 있다.In addition, the second fuel supply line (L13) is connected to a pressure pump (150) that compresses the fluid that has passed through the first heat exchanger (121) according to the fuel supply conditions of the second demand source (E2), and the pressure pump (150). A vaporizer 160 is provided to vaporize the compressed fluid according to the fuel supply conditions of the second demand source (E2), and the refrigerant cooling unit 155 can be provided between the pressure pump 150 and the vaporizer 160. .

또 선박용 연료공급시스템(100)은, 증발가스공급라인(L11)에 마련되며, 제2열교환기(122)를 통과한 유체를 팽창시키는 후단팽창기(130)를 포함하고, 증발가스공급라인(L11)은 저장탱크(101), 가스압축부(110), 액화부(120), 후단팽창기(130)를 연결하며, 팽창된 유체는 저장탱크(101)로 회수될 수 있다.In addition, the marine fuel supply system 100 is provided in the boil-off gas supply line (L11) and includes a rear-end expander (130) that expands the fluid that has passed through the second heat exchanger (122), and the boil-off gas supply line (L11) ) connects the storage tank 101, the gas compression unit 110, the liquefaction unit 120, and the rear expander 130, and the expanded fluid can be recovered to the storage tank 101.

또, 가스압축부(110)는 저장탱크(101)로부터 공급받은 증발가스를 가열시키는 히터(111)와, 히터(111)에 의해 가열된 증발가스를 제1수요처(E1)의 연료공급조건에 맞게 저압으로 압축시키는 저압압축기(112)와, 저압압축기(112)에 의해 압축된 증발가스를 냉각시키는 증발가스냉각기(113)를 포함할 수 있다.In addition, the gas compression unit 110 includes a heater 111 that heats the boil-off gas supplied from the storage tank 101, and the boil-off gas heated by the heater 111 according to the fuel supply conditions of the first consumer (E1). It may include a low-pressure compressor 112 that compresses the boil-off gas to an appropriate low pressure, and a boil-off gas cooler 113 that cools the boil-off gas compressed by the low-pressure compressor 112.

또, 제1연료공급라인(L12)은 증발가스공급라인(L11)의 저압압축기(112) 후단으로부터 분기되어 제1수요처(E1)와 연결되고, 저압압축기(112)에 의해 압축된 증발가스를 제1수요처(E1)의 연료공급조건에 맞게 가열시키는 가열기(140)를 마련할 수 있다.In addition, the first fuel supply line (L12) branches off from the rear end of the low-pressure compressor (112) of the boil-off gas supply line (L11) and is connected to the first demand source (E1), and supplies the boil-off gas compressed by the low-pressure compressor (112). A heater 140 that heats the fuel according to the fuel supply conditions of the first consumer (E1) can be provided.

이하, 연료공급시스템(100)의 각 구성요소에 대해서 구체적으로 설명한다.Hereinafter, each component of the fuel supply system 100 will be described in detail.

연료공급시스템(100)은 예컨대 액화연료 운반선, 액화연료 RV(Regasification Vessel), 컨테이너선, 일반상선, LNG FPSO(Floating, Production, Storage and Off-loading), LNG FSRU(Floating Storage and Regasification Unit) 등을 포함하는 각종 선박에 구비될 수 있다.The fuel supply system 100 is, for example, a liquefied fuel carrier, a liquefied fuel RV (Regasification Vessel), a container ship, a general merchant ship, an LNG FPSO (Floating, Production, Storage and Off-loading), an LNG FSRU (Floating Storage and Regasification Unit), etc. It can be equipped on various ships, including.

본 발명의 실시 예에서는 액화가스 연료 추진 선박에 연료공급시스템(100)이 적용되는 것을 예로 들어 설명한다. 액화가스 연료 추진 선박은 보일러나 발전용 엔진에 상당량의 연료가 소모된다.In an embodiment of the present invention, application of the fuel supply system 100 to a liquefied gas fuel propulsion ship will be described as an example. Liquefied gas-fueled ships consume a significant amount of fuel in boilers and power generation engines.

저장탱크(101)는 예컨대 액화가스로서 LNG(Liquefied Natural Gas)를 저장할 수 있으며, 단열상태를 유지하면서 연료를 액화상태로 저장하는 멤브레인형 탱크, IMO Type-B 탱크 등을 포함할 수 있다. The storage tank 101 may store, for example, LNG (Liquefied Natural Gas) as a liquefied gas, and may include a membrane-type tank or an IMO Type-B tank that stores fuel in a liquefied state while maintaining insulation.

또, 저장탱크(101)는 예컨대 저압의 저장탱크로서, 대략 0.0bar 내지 0.7bar 압력 상태에서 LNG를 대략 -150℃ 내지 -163℃ 범위의 극저온 상태로 저장할 수 있다. In addition, the storage tank 101 is, for example, a low-pressure storage tank, and can store LNG at a cryogenic temperature ranging from approximately -150°C to -163°C at a pressure of approximately 0.0 bar to 0.7 bar.

저장탱크(101) 내부의 액화가스의 증발가스는 증발가스공급라인(L11)을 통해 가스압축부(110), 액화부(120), 후단팽창기(130) 쪽으로 흘러가면서 액화된 후 저장탱크(101)로 회수된다. 증발가스공급라인(L11)은 저장탱크(101), 가스압축부(110), 액화부(120), 후단팽창기(130)를 연결한다.The boil-off gas of the liquefied gas inside the storage tank (101) is liquefied while flowing toward the gas compression unit (110), the liquefaction unit (120), and the rear-end expander (130) through the boil-off gas supply line (L11) and then stored in the storage tank (101). ) is recovered. The boil-off gas supply line (L11) connects the storage tank 101, the gas compression unit 110, the liquefaction unit 120, and the rear expander 130.

이때, 가스압축부(110)를 통과한 유체 중 적어도 일부는 제1연료공급라인(L12)을 통해 제1수요처(E1)로 공급될 수 있으며, 제1수요처(E1)의 연료공급량을 초과한 유량은 액화되어 저장탱크(101)에 저장될 수 있다.At this time, at least some of the fluid that has passed through the gas compression unit 110 may be supplied to the first consumer (E1) through the first fuel supply line (L12), and may exceed the fuel supply amount of the first consumer (E1). The flow rate may be liquefied and stored in the storage tank 101.

구체적으로 가스압축부(110)는 제1수요처(E1)의 연료공급조건에 맞게 유체를 압축시키며, 히터(111), 저압압축기(112) 및 증발가스냉각기(113)를 포함한다.Specifically, the gas compression unit 110 compresses fluid according to the fuel supply conditions of the first consumer (E1), and includes a heater 111, a low pressure compressor 112, and an evaporation gas cooler 113.

히터(111)는 저압압축기(112)의 공급조건에 맞게 저장탱크(101)로부터 공급받은 증발가스를 가열시킨다. 이때, 저압압축기(112)가 극저온용인 경우, 히터(111)를 생략할 수 있다.The heater 111 heats the boil-off gas supplied from the storage tank 101 according to the supply conditions of the low pressure compressor 112. At this time, if the low pressure compressor 112 is for cryogenic temperatures, the heater 111 can be omitted.

저압압축기(112)는 히터(111)에 의해 가열된 유체를 제1수요처(E1)의 연료공급조건에 맞게 저압으로 압축시킨다. 저압압축기(112)는 예컨대 히터(111)에 의해 가열된 유체를 대략 7barg 내지 9barg로 압축시킬 수 있다. 가스압축부(110)에 의해 압축된 유체 중 적어도 일부는 제1연료공급라인(L12)를 통해 제1수요처(E1)의 연료로 공급될 수 있다. 제1수요처(E1)는 발전용 엔진, 보일러 등을 포함할 수 있다.The low-pressure compressor 112 compresses the fluid heated by the heater 111 to low pressure in accordance with the fuel supply conditions of the first demand source (E1). The low pressure compressor 112 can compress the fluid heated by the heater 111 to approximately 7 barg to 9 barg, for example. At least some of the fluid compressed by the gas compression unit 110 may be supplied as fuel to the first demand source (E1) through the first fuel supply line (L12). The first consumer (E1) may include power generation engines, boilers, etc.

증발가스냉각기(113)는 저압압축기(112)에 의해 압축된 유체를 냉각시킨다. 저압압축기(112)에 의해 압축된 유체는 설정 수치의 온도에 맞게 증발가스냉각기(113)에 의해 온도가 제어될 수 있다.The evaporation gas cooler 113 cools the fluid compressed by the low pressure compressor 112. The temperature of the fluid compressed by the low pressure compressor 112 can be controlled by the evaporation gas cooler 113 to match the temperature of the set value.

제1연료공급라인(L12)은 증발가스공급라인(L11)의 저압압축기(112) 후단으로부터 분기되어 제1수요처(E1)와 연결되고, 저압압축기(112)에 의해 압축된 증발가스를 제1수요처(E1)의 연료공급조건에 맞게 가열시키는 가열기(140)를 마련한다.The first fuel supply line (L12) branches off from the rear end of the low-pressure compressor (112) of the boil-off gas supply line (L11) and is connected to the first demand source (E1), and transfers the boil-off gas compressed by the low-pressure compressor (112) to the first fuel supply line (L11). A heater 140 that heats the fuel according to the fuel supply conditions of the consumer (E1) is provided.

종래에는 다단의 압축기를 포함하는 압축부를 통해 고압으로 증발가스를 압축시킨 후 저압 수요처의 연료로 공급하기 위해 대량의 감압을 수행해야 했으나, 본 발명의 실시 예를 통해 가스압축부(110)에 의해 유체를 저압으로 압축시킨 후 제1수요처(E1)로 공급할 수 있다. In the past, boil-off gas had to be compressed at high pressure through a compression unit including a multi-stage compressor and then decompressed in large quantities to be supplied as fuel to low-pressure consumers. However, through an embodiment of the present invention, the gas compression unit 110 The fluid can be compressed to low pressure and then supplied to the first demand source (E1).

액화부(120)는 가스압축부(110)에 의해 압축된 유체 중 제1수요처(E1)의 연료공급량을 초과한 유량을 재액화시킨다.The liquefaction unit 120 re-liquefies the fluid compressed by the gas compression unit 110 at a flow rate that exceeds the fuel supply amount to the first demand source (E1).

액화부(120)는 제1열교환기(121)와 제2열교환기(122)를 포함하는 형태이거나, 다른 예에서는 복수의 스트림을 가진 열교환기 1대로 제작될 수도 있다.The liquefaction unit 120 may include a first heat exchanger 121 and a second heat exchanger 122, or, in another example, may be manufactured as a single heat exchanger with multiple streams.

제1열교환기(121)는 가스압축부(110)를 통과한 증발가스를 예냉시키고, 제2열교환기(122)는 제1열교환기(121)에 의해 예냉된 유체를 액화시킨다.The first heat exchanger 121 precools the boil-off gas that has passed through the gas compression unit 110, and the second heat exchanger 122 liquefies the fluid precooled by the first heat exchanger 121.

제1열교환기(121)는 제2연료공급라인(L13)을 통해 저장탱크(101)로부터 공급받은 액화가스와 증발가스공급라인(L11)을 통해 가스압축부(110)를 통과한 증발가스 간 열교환을 수행하여 증발가스를 예냉시킨다. The first heat exchanger 121 is a gas exchanger between the liquefied gas supplied from the storage tank 101 through the second fuel supply line (L13) and the boil-off gas passing through the gas compression unit 110 through the boil-off gas supply line (L11). Heat exchange is performed to pre-cool the boil-off gas.

제2열교환기(122)는 냉매순환라인(L14)을 통해 흐르는 냉매와 증발가스공급라인(L11)의 제1열교환기(121)에 의해 예냉된 유체 간 열교환을 수행하여, 예냉된 유체를 액화시킨다.The second heat exchanger 122 performs heat exchange between the refrigerant flowing through the refrigerant circulation line (L14) and the fluid pre-cooled by the first heat exchanger 121 of the boil-off gas supply line (L11), and liquefies the pre-cooled fluid. I order it.

이후, 액화된 유체는 후단팽창기(130)에 의해 팽창된 후, 저장탱크(101)로 회수되어, 저장탱크(101) 내부 압력 조절을 위해 사용될 수 있다. 저장탱크(101)로 회수되는 유체는 예컨대 저장탱크(101)의 바닥(Bottom) 부위로 회수되어, 저장탱크(101) 내의 플래시(Flash) 가스 발생량을 억제시킬 수 있다.Thereafter, the liquefied fluid is expanded by the rear end expander 130 and then returned to the storage tank 101, where it can be used to adjust the internal pressure of the storage tank 101. The fluid returned to the storage tank 101 is, for example, recovered to the bottom of the storage tank 101, thereby suppressing the amount of flash gas generated in the storage tank 101.

상술한 냉매는 냉매순환라인(L14)을 따라 제2열교환기(122), 냉매압축기(135), 냉매냉각부(155) 및 냉매팽창기(137)로 순환 공급된다.The above-described refrigerant is circulated and supplied to the second heat exchanger 122, the refrigerant compressor 135, the refrigerant cooling unit 155, and the refrigerant expander 137 along the refrigerant circulation line (L14).

증발가스공급라인(L11)의 제1열교환기(121)에 의해 예냉된 유체는 제2열교환기(122)에서 냉매순환라인(L14)을 따라 순환 공급되는 냉매와 열교환되어 액화된다.The fluid pre-cooled by the first heat exchanger 121 of the boil-off gas supply line L11 is liquefied by heat exchange with the refrigerant circulated along the refrigerant circulation line L14 in the second heat exchanger 122.

제2열교환기(122)에서 열교환된 냉매는 냉매압축기(135)를 통과한 후, 냉매냉각부(155)에서 제2연료공급라인(L13)에 마련된 가압펌프(150)를 통과한 액화가스와 열교환되어 냉각되고, 냉매팽창기(137)로 흘러가 감압된다.The refrigerant heat-exchanged in the second heat exchanger (122) passes through the refrigerant compressor (135), and then passes through the pressurizing pump (150) provided in the second fuel supply line (L13) in the refrigerant cooling unit (155) into liquefied gas. It is cooled by heat exchange and flows to the refrigerant expander (137) to depressurize.

이를 통해, 가압펌프(150)를 통과한 액화가스의 냉열을 활용하여 냉매를 냉각시키고, 냉각된 냉매를 제2열교환기(122) 쪽으로 순환시켜 증발가스 액화에 활용할 수 있다.Through this, the cold heat of the liquefied gas passing through the pressurizing pump 150 can be used to cool the refrigerant, and the cooled refrigerant can be circulated toward the second heat exchanger 122 and used to liquefy the boil-off gas.

저장탱크(101)에 저장된 액화가스는 저장탱크(101) 내부에 마련된 펌프(P)에 의해 펌핑되어, 액화부(120)의 제1열교환기(121)를 통과한 후 제2연료공급라인(L13)을 통해 제1수요처(E1)보다 큰 압력의 연료를 필요로 하는 제2수요처(E2)로 공급될 수 있다.The liquefied gas stored in the storage tank 101 is pumped by the pump (P) provided inside the storage tank 101, passes through the first heat exchanger 121 of the liquefaction unit 120, and then flows through the second fuel supply line ( Through L13), fuel can be supplied to the second demand source (E2), which requires fuel at a higher pressure than the first demand source (E1).

이때, 저장탱크(101) 내부에 마련된 펌프(P)에 의해 펌핑된 액화가스 중 일부는 제1열교환기(121)를 통과하지 않고, 액화가스공급라인(L15)을 통해 바로 제2수요처(E2) 쪽으로 공급될 수도 있다.At this time, some of the liquefied gas pumped by the pump (P) provided inside the storage tank (101) does not pass through the first heat exchanger (121), but directly passes through the liquefied gas supply line (L15) to the second consumer (E2). ) may also be supplied to the side.

제2수요처(E2)는 예컨대 ME-GI 엔진(Man B&W 사의 Gas Injection 엔진)과 같은 고압(약 150~700bar)의 분사엔진 및 X-DF 엔진인 중압(약 16~18bar)의 연료가스로 연소가 가능한 중압가스 분사엔진을 포함할 수 있다. The second source of demand (E2) is combustion with fuel gas of high pressure (approximately 150 to 700 bar) injection engines such as the ME-GI engine (Gas Injection engine of Man B&W) and medium pressure (approximately 16 to 18 bar) of the X-DF engine. It may include a medium pressure gas injection engine capable of

제2연료공급라인(L13)에 마련된 가압펌프(150)는 제2수요처(E2)의 연료공급조건에 맞게 제1열교환기(121)를 통과한 유체를 가압시킨다.The pressurizing pump 150 provided in the second fuel supply line (L13) pressurizes the fluid passing through the first heat exchanger (121) according to the fuel supply conditions of the second demand source (E2).

그리고, 기화기(160)는 가압펌프(150)에 의해 가압된 유체를 제2수요처(E2)의 연료공급조건에 맞게 기화시킨다.And, the vaporizer 160 vaporizes the fluid pressurized by the pressure pump 150 in accordance with the fuel supply conditions of the second demand source E2.

도 2는 도 1의 선박용 연료공급시스템의 다른 예를 도시한 것이다.Figure 2 shows another example of the marine fuel supply system of Figure 1.

한편, 도 2를 참조하면 선박용 연료공급시스템(100)은, 후단팽창기(130)의 후단에 마련되며, 팽창된 유체를 기액 분리시키는 기액분리기(170)를 포함하고, 분리된 기체성분은 증발가스공급라인(L11)의 히터(111) 전단으로 합류되고, 분리된 액체성분은 저장탱크(101)로 회수될 수 있다.Meanwhile, referring to FIG. 2, the marine fuel supply system 100 is provided at the rear end of the rear expander 130 and includes a gas-liquid separator 170 that separates the expanded fluid from gas and liquid, and the separated gas component is boil-off gas. It joins the front end of the heater 111 of the supply line (L11), and the separated liquid component can be recovered to the storage tank (101).

즉 증발가스의 유량이 많은 경우, 후단팽창기(130)의 후단에 기액분리기(170)가 마련될 수 있으며, 기액분리기(170)는 후단팽창기(130)에 의해 팽창된 유체를 기액 분리시킨다. 기액분리기(170)에 의해 분리된 기체성분은 기체성분공급라인(L16)을 통해 증발가스공급라인(L11)의 히터(111) 전단으로 합류되고, 기액분리기(170)에 의해 분리된 액체성분은 액체성분회수라인(L17)을 통해 저장탱크(101)로 회수된다.That is, when the flow rate of the boil-off gas is large, a gas-liquid separator 170 may be provided at the rear of the rear-end expander 130, and the gas-liquid separator 170 separates the fluid expanded by the rear-end expander 130 into gas and liquid. The gas component separated by the gas-liquid separator 170 joins the front of the heater 111 of the boil-off gas supply line (L11) through the gas component supply line (L16), and the liquid component separated by the gas-liquid separator 170 It is recovered to the storage tank (101) through the liquid component recovery line (L17).

이와 같이 본 발명의 실시 예에 따른 저압압축기(112)는 종래의 고압 다단 압축기와 달리 저압 압축기를 적용하여 초기 투자비 및 운전 비용을 최소화할 수 있으며, 운전 편의성 증대 및 고압 위험 구역 최소화로 안전성을 향상시킬 수 있다.In this way, the low-pressure compressor 112 according to an embodiment of the present invention, unlike the conventional high-pressure multi-stage compressor, can minimize initial investment and operating costs by applying a low-pressure compressor, and improves safety by increasing operating convenience and minimizing high-pressure risk areas. You can do it.

또, 저장탱크(101)로부터 공급된 증발가스의 액화에 냉매의 냉열을 활용하고, 냉매의 냉각에 저장탱크(101)로부터 공급된 액화가스를 활용할 수 있다.In addition, the cold heat of the refrigerant can be used to liquefy the boil-off gas supplied from the storage tank 101, and the liquefied gas supplied from the storage tank 101 can be used to cool the refrigerant.

또, 저장탱크(101)로부터 공급된 액화가스가 액화부(120)를 통해 가압펌프(150)에 적합한 상태로 변환되어, 결과적으로 기화기(160)의 용량을 줄일 수 있다.In addition, the liquefied gas supplied from the storage tank 101 is converted into a state suitable for the pressurizing pump 150 through the liquefaction unit 120, and as a result, the capacity of the vaporizer 160 can be reduced.

일반적인 증발가스의 몰리에르 선도(Molier Diagram, Pressure-Enthalpy Diagram)를 살펴보면, 종래에는 증발가스의 액화에 소모되는 에너지를 줄이고자 임계점(Critical Point) 이상의 고압 영역에서 냉각을 수행하였다.Looking at the Molier Diagram (Pressure-Enthalpy Diagram) of a general boil-off gas, conventionally cooling was performed in a high pressure area above the critical point to reduce the energy consumed for liquefying the boil-off gas.

그러나 본 발명의 실시 예에 따른 연료공급시스템(100)의 경우, 증발가스를 액화시키는 데에 소요되는 에너지를 줄이고자 증발가스를 고압까지 승압하는 과정이 불필요하며, 저압에서도 액화 효율성을 향상시킬 수 있다.However, in the case of the fuel supply system 100 according to an embodiment of the present invention, the process of boosting the boil-off gas to high pressure is unnecessary to reduce the energy required to liquefy the boil-off gas, and liquefaction efficiency can be improved even at low pressure. there is.

또, 액화부(120)에 의해 액화된 증발가스를 저장탱크(101)의 압력까지 후단팽창기(130)에 의해 팽창시킬 경우, 액체 영역에서 몰리에르 선도의 등온 곡선 기울기가 양수이므로 액화부(120) 출구 온도가 동일할 경우 저압에서 증발가스의 액화량이 증가할 수 있다.In addition, when the boil-off gas liquefied by the liquefaction unit 120 is expanded by the rear-end expander 130 to the pressure of the storage tank 101, the isothermal curve slope of the Molière diagram in the liquid region is positive, so the liquefaction unit 120 If the outlet temperature is the same, the amount of liquefied boil-off gas may increase at low pressure.

또, 증발가스 사용을 최소화하여 가벼운 탄화수소 성분을 효과적으로 보존할 수 있어 저장탱크(101) 내 연료 성분을 양호하게 유지할 수 있다.In addition, by minimizing the use of boil-off gas, light hydrocarbon components can be effectively preserved, and the fuel components in the storage tank 101 can be maintained in good condition.

이상에서는 특정의 실시 예에 대하여 도시하고 설명하였다. 그러나, 본 발명은 상기한 실시 예에만 한정되지 않으며, 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 청구범위에 기재된 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경 실시할 수 있을 것이다.In the above, specific embodiments are shown and described. However, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. You will be able to.

101: 저장탱크 110: 가스압축부
120: 액화부 130: 후단팽창기
135: 냉매압축기 137: 냉매팽창기
140: 가열기 150: 가압펌프
155: 냉매냉각부 160: 기화기
170: 기액분리기
E1: 제1수요처 E2: 제2수요처
L11: 증발가스공급라인 L12: 제1연료공급라인
L13: 제2연료공급라인 L14: 냉매순환라인
L15: 액화가스공급라인 L16: 기체성분공급라인
L17: 액체성분회수라인101: storage tank 110: gas compression unit
120: Liquefaction unit 130: Rear end expander
135: Refrigerant compressor 137: Refrigerant expander
140: heater 150: pressurization pump
155: refrigerant cooling unit 160: vaporizer
170: Gas-liquid separator
E1: Primary consumer E2: Secondary consumer
L11: Evaporative gas supply line L12: First fuel supply line
L13: Second fuel supply line L14: Refrigerant circulation line
L15: Liquefied gas supply line L16: Gas component supply line
L17: Liquid component recovery line

Claims (6)

액화가스 및 이의 증발가스를 저장하는 저장탱크;
상기 저장탱크로부터 증발가스공급라인을 통해 공급받은 증발가스를 제1수요처의 연료공급조건에 맞게 압축시키는 가스압축부;
상기 압축된 증발가스 중 상기 제1수요처의 연료공급량을 초과한 유량을 액화시키며, 제1열교환기와 제2열교환기를 포함하는 액화부;
상기 가스압축부를 통과한 증발가스 중 적어도 일부를 상기 제1수요처의 연료로 공급하는 제1연료공급라인;
상기 저장탱크로부터 공급받은 액화가스 중 적어도 일부를 상기 제1열교환기를 거쳐 상기 제1수요처보다 높은 압력을 필요로 하는 제2수요처로 공급하는 제2연료공급라인;
상기 제2연료공급라인에 마련되며, 상기 액화가스와 냉매 간 열교환을 수행하여 상기 냉매를 냉각시키는 냉매냉각부; 및
상기 냉매를 압축시키는 냉매압축기와 상기 냉매를 감압시키는 냉매팽창기를 마련하고, 상기 냉매를 상기 제2열교환기, 냉매압축기, 냉매냉각부 및 냉매팽창기로 순환 공급하는 냉매순환라인;을 포함하는 선박용 연료공급시스템.A storage tank for storing liquefied gas and its boil-off gas;
A gas compression unit that compresses the boil-off gas supplied from the storage tank through the boil-off gas supply line to suit the fuel supply conditions of the first consumer;
A liquefaction unit that liquefies a flow rate of the compressed boil-off gas exceeding the fuel supply amount of the first consumer and includes a first heat exchanger and a second heat exchanger;
a first fuel supply line that supplies at least a portion of the boil-off gas that has passed through the gas compression unit as fuel to the first consumer;
a second fuel supply line that supplies at least a portion of the liquefied gas supplied from the storage tank to a second demand source requiring a higher pressure than the first demand source through the first heat exchanger;
a refrigerant cooling unit provided in the second fuel supply line and cooling the refrigerant by performing heat exchange between the liquefied gas and the refrigerant; and
A refrigerant compressor for compressing the refrigerant and a refrigerant expander for decompressing the refrigerant are provided, and a refrigerant circulation line that circulates and supplies the refrigerant to the second heat exchanger, the refrigerant compressor, the refrigerant cooling unit, and the refrigerant expander. Supply system. 제1항에 있어서,
상기 제2연료공급라인은
상기 제1열교환기를 통과한 유체를 상기 제2수요처의 연료공급조건에 맞게 압축시키는 가압펌프와,
상기 압축된 유체를 상기 제2수요처의 연료공급조건에 맞게 기화시키는 기화기를 마련하며,
상기 냉매냉각부는 상기 가압펌프와 기화기 사이에 마련된 선박용 연료공급시스템.According to paragraph 1,
The second fuel supply line is
a pressurizing pump that compresses the fluid that has passed through the first heat exchanger according to the fuel supply conditions of the second demand source;
Providing a vaporizer that vaporizes the compressed fluid according to the fuel supply conditions of the second consumer,
The refrigerant cooling unit is a marine fuel supply system provided between the pressurization pump and the carburetor. 제1항에 있어서,
상기 증발가스공급라인에 마련되며, 상기 제2열교환기를 통과한 유체를 팽창시키는 후단팽창기를 더 포함하고,
상기 증발가스공급라인은 상기 저장탱크, 가스압축부, 액화부, 후단팽창기를 연결하며, 상기 팽창된 유체는 상기 저장탱크로 회수되는 선박용 연료공급시스템.According to paragraph 1,
It is provided in the boil-off gas supply line and further includes a rear-end expander that expands the fluid that has passed through the second heat exchanger,
The evaporation gas supply line connects the storage tank, the gas compression section, the liquefaction section, and the rear-end expander, and the expanded fluid is returned to the storage tank. 제3항에 있어서,
상기 후단팽창기의 후단에 마련되며, 상기 팽창된 유체를 기액 분리시키는 기액분리기를 더 포함하고,
상기 분리된 기체성분은 상기 증발가스공급라인의 히터 전단으로 합류되고,
상기 분리된 액체성분은 상기 저장탱크로 회수되는 선박용 연료공급시스템.According to paragraph 3,
It is provided at the rear end of the rear end expander and further includes a gas-liquid separator that separates the expanded fluid from gas and liquid,
The separated gas component is joined to the front of the heater of the boil-off gas supply line,
A marine fuel supply system in which the separated liquid component is recovered into the storage tank. 제1항에 있어서,
상기 가스압축부는
상기 저장탱크로부터 공급받은 증발가스를 가열시키는 히터와,
상기 히터에 의해 가열된 증발가스를 상기 제1수요처의 연료공급조건에 맞게 저압으로 압축시키는 저압압축기와,
상기 압축된 증발가스를 냉각시키는 증발가스냉각기를 포함하고,
상기 제1연료공급라인은
상기 증발가스공급라인의 저압압축기 후단으로부터 분기되어 상기 제1수요처와 연결되고,
상기 저압압축기에 의해 압축된 증발가스를 상기 제1수요처의 연료공급조건에 맞게 가열시키는 가열기를 마련한 선박용 연료공급시스템.According to paragraph 1,
The gas compression unit
A heater that heats the evaporation gas supplied from the storage tank,
A low-pressure compressor that compresses the boil-off gas heated by the heater to a low pressure in accordance with the fuel supply conditions of the first consumer;
It includes a boil-off gas cooler that cools the compressed boil-off gas,
The first fuel supply line is
The boil-off gas supply line is branched from the rear end of the low-pressure compressor and connected to the first consumer,
A marine fuel supply system provided with a heater that heats the boil-off gas compressed by the low-pressure compressor to suit the fuel supply conditions of the first consumer. 제1항 내지 제5항 중 어느 한 항에 따른 연료공급시스템을 구비한 액화가스 연료 추진 선박.A liquefied gas fuel propulsion vessel equipped with a fuel supply system according to any one of paragraphs 1 to 5.
KR1020220040359A 2022-03-31 2022-03-31 Fuel providing system used for ship, and liquefied gas fueled ship having the same KR20230143208A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101613236B1 (en) 2015-07-08 2016-04-18 대우조선해양 주식회사 Vessel Including Engines and Method of Reliquefying Boil-Off Gas for The Same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101613236B1 (en) 2015-07-08 2016-04-18 대우조선해양 주식회사 Vessel Including Engines and Method of Reliquefying Boil-Off Gas for The Same

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