KR20220143193A - Fuel providing system of ship - Google Patents

Fuel providing system of ship Download PDF

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Publication number
KR20220143193A
KR20220143193A KR1020210048835A KR20210048835A KR20220143193A KR 20220143193 A KR20220143193 A KR 20220143193A KR 1020210048835 A KR1020210048835 A KR 1020210048835A KR 20210048835 A KR20210048835 A KR 20210048835A KR 20220143193 A KR20220143193 A KR 20220143193A
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South Korea
Prior art keywords
gas
fuel supply
heat exchange
supply line
low
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KR1020210048835A
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Korean (ko)
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류시진
전준우
최병윤
이호기
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삼성중공업 주식회사
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Priority to KR1020210048835A priority Critical patent/KR20220143193A/en
Publication of KR20220143193A publication Critical patent/KR20220143193A/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
    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0185—Arrangement comprising several pumps or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0339—Heat exchange with the fluid by cooling using the same fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • F17C2265/017—Purifying the fluid by separating different phases of a same fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/02—Mixing fluids
    • F17C2265/022—Mixing fluids identical 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
    • F17C2265/05—Regasification
    • 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
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • 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

Abstract

Disclosed is a fuel providing system of a ship. According to an embodiment of the present invention, the fuel providing system of a ship comprises: a low-pressure compression unit which compresses evaporative gas supplied from a storage tank to meet a fuel supply condition of a first demander requiring low-pressure fuel; a heat exchange unit which liquefies fluids exceeding the fuel supply of the first demander in the compressed evaporative gas; an inflator which inflates the liquefied fluids that have passed through the heat exchange unit; a gas-liquid separator which separates the inflated fluids into gas and liquid; an evaporative gas supply line which connects the storage tank, the low-pressure compression unit, the heat exchange unit, the inflator, and the gas-liquid separator and supplies gaseous components separated by the gas-liquid separator to a front end of the low-pressure compression unit through the heat exchange unit; a first fuel supply line which branches from a gap between the low pressure compression unit and the heat exchange unit of the evaporative gas supply line and is connected to the first demander; a pressurization pump which pressurizes liquefied gas supplied from the storage tank; and a second fuel supply line which connects the storage tank, the pressurization pump, the heat exchange unit, and a second demander requiring fuel with a greater pressure compared to the first demand, and supplies the pressurized liquefied gas to the second demander through the heat exchange unit. Accordingly, the present invention can increase operation efficiency by compressing evaporative gas generated from the storage tank to low pressure and supplying the same to a low-pressure demander.

Description

선박의 연료공급시스템{FUEL PROVIDING SYSTEM OF SHIP}Ship's fuel supply system {FUEL PROVIDING SYSTEM OF SHIP}

본 발명은 선박의 연료공급시스템에 관한 것이다.The present invention relates to a fuel supply system for a ship.

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 have been strengthened, the shipbuilding and shipping industry has been using natural gas, a clean energy source, instead of using the existing fuels such as heavy oil and diesel oil. It is increasingly 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. 액화가스가 저장된 저장탱크 내부에서는 외부의 열 유입에 따라 증발가스가 발생하며, 증발가스는 5단 내외의 다단 압축기를 포함하는 압축부를 거쳐 고압(대략 300barg)으로 압축된 후, 고압 분사엔진의 연료로 공급될 수 있다.Natural gas, which is widely used among fuel gases, has methane as a main component, and is converted into a liquefied gas state with its volume reduced to 1/600 and stored in a storage tank. BOG is generated in the storage tank where the liquefied gas is stored according to the inflow of external heat, and BOG is compressed to a high pressure (about 300 barg) through a compression unit including a multi-stage compressor of about 5 stages, and then the fuel of the high-pressure injection engine. can be supplied with

이때, 고압의 압축부와 연관된 배관 등의 설비 또한 고압에 견딜 수 있도록 그에 맞게 설계되어야 하며, 운전 정시 시 내부 정지 압력(Settle-out Pressure)을 낮추기 위해 별도의 대용량 가스 탱크가 적용될 수 있다.At this time, facilities such as piping associated with the high-pressure compression unit must also be designed accordingly to withstand the high pressure, and a separate large-capacity gas tank may be applied to lower the set-out pressure when the operation is stopped.

또, 압축부를 거쳐 고압으로 압축된 증발가스 중 적어도 일부는 발전기 및 보일러와 같은 저압 수요처로도 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, at least a portion of the boil-off gas compressed to a high pressure through the compression unit may be supplied to low-pressure demand sources such as generators and boilers. To this end, the boil-off gas compressed into high pressure should be expanded to convert it to a low-pressure gas of about 8 barg, and a heater may be used to compensate for the sudden drop in gas temperature due to mass decompression.

이와 같이, 종래에는 고압으로 압축된 증발가스 중 적어도 일부를 저압 수요처의 연료로 공급하기 위해 대량의 감압을 수행하는 등 전체 연료공급시스템 운영에 있어서 비효율적인 문제점이 있다.As such, in the related art, there is an inefficient operation of the entire fuel supply system, such as performing a large amount of decompression in order to supply at least a portion of the BOG compressed to a high pressure as a fuel of a low-pressure consumer.

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

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

본 발명의 실시 예는 저장탱크 내부에서 발생한 증발가스를 저압으로 압축하여 저압 수요처로 공급함으로써 운용 효율성을 높일 수 있는 선박의 연료공급시스템을 제공하고자 한다.An embodiment of the present invention is to provide a fuel supply system for a ship capable of increasing operational efficiency by compressing boil-off gas generated inside a storage tank to a low pressure and supplying it to a low pressure demanding destination.

본 발명의 일 측면에 따르면, 저장탱크로부터 공급받은 증발가스를 저압 연료를 필요로 하는 제1수요처의 연료공급조건에 맞게 압축시키는 저압압축부; 상기 압축된 증발가스 중 상기 제1수요처의 연료공급량을 초과한 유량을 액화시키는 열교환부; 상기 열교환부를 통과한 상기 액화된 유체를 팽창시키는 팽창기; 상기 팽창된 유체를 기액 분리시키는 기액분리기; 상기 저장탱크, 저압압축부, 열교환부, 팽창기 및 기액분리기를 연결하며, 상기 기액분리기에 의해 분리된 기체성분을 상기 열교환부를 거쳐 상기 저압압축부의 전단으로 공급하는 증발가스공급라인; 상기 증발가스공급라인의 상기 저압압축부와 열교환부 사이로부터 분기되어, 상기 제1수요처와 연결된 제1연료공급라인; 상기 저장탱크로부터 공급받은 액화가스를 가압하는 가압펌프; 및 상기 저장탱크, 가압펌프, 열교환부 및 상기 제1수요처보다 큰 압력의 연료를 필요로 하는 제2수요처를 연결하며, 상기 가압된 액화가스를 상기 열교환부를 거쳐 상기 제2수요처로 공급하는 제2연료공급라인;을 포함하는 선박의 연료공급시스템이 제공될 수 있다.According to an aspect of the present invention, a low-pressure compression unit for compressing the boil-off gas supplied from the storage tank according to the fuel supply conditions of the first consumer requiring low-pressure fuel; a heat exchange unit for liquefying a flow rate of the compressed BOG exceeding the fuel supply amount of the first consumer; an expander for expanding the liquefied fluid that has passed through the heat exchange unit; a gas-liquid separator for gas-liquid separation of the expanded fluid; a boil-off gas supply line connecting the storage tank, the low-pressure compression unit, the heat exchange unit, the expander, and the gas-liquid separator, and supplying the gas component separated by the gas-liquid separator to the front end of the low-pressure compression unit through the heat exchange unit; a first fuel supply line branched from between the low-pressure compression unit and the heat exchange unit of the boil-off gas supply line and connected to the first consumer; a pressurizing pump for pressurizing the liquefied gas supplied from the storage tank; and a second connecting the storage tank, the pressurized pump, the heat exchange unit, and a second consumer that requires fuel at a pressure greater than that of the first consumer, and supplying the pressurized liquefied gas to the second consumer through the heat exchange unit. A fuel supply line; a fuel supply system for a ship including a fuel supply system may be provided.

상기 열교환부는 상기 저압압축부에 의해 압축된 증발가스와 상기 가압펌프에 의해 가압된 액화가스 간 열교환을 수행하는 제1열교환기와, 상기 제1열교환부를 통과한 상기 압축된 증발가스와 상기 기액분리기에 의해 분리된 기체성분 간 열교환을 수행하는 제2열교환기를 포함할 수 있다.The heat exchange unit includes a first heat exchanger performing heat exchange between the boil-off gas compressed by the low-pressure compression unit and the liquefied gas pressurized by the pressurization pump, and the compressed boil-off gas passing through the first heat exchange unit and the gas-liquid separator. It may include a second heat exchanger for performing heat exchange between the gas components separated by the

상기 제1연료공급라인에 마련되며, 상기 저압압축부에 의해 압축된 유체를 상기 제1수요처의 연료공급조건에 맞게 냉각시키는 냉각기와, 상기 저장탱크로부터 액화가스 중 적어도 일부를 공급받아 상기 제1수요처의 연료공급조건에 맞게 기화시키는 제1기화기와, 상기 제2연료공급라인의 가압펌프 전단으로부터 분기되어 상기 제1연료공급라인의 냉각기 후단을 연결하며, 상기 제1기화기에 의해 기화된 유체를 상기 제1연료공급라인에 합류시키는 액화가스합류라인을 더 포함할 수 있다.a cooler provided in the first fuel supply line and cooling the fluid compressed by the low-pressure compression unit according to the fuel supply condition of the first consumer; and receiving at least a portion of the liquefied gas from the storage tank A first vaporizer that vaporizes according to the fuel supply condition of a customer, and a first vaporizer that is branched from the front end of the pressurization pump of the second fuel supply line and connects the rear end of the cooler of the first fuel supply line, and the fluid vaporized by the first vaporizer It may further include a liquefied gas joining line for joining the first fuel supply line.

상기 제1연료공급라인에 마련되며, 상기 저장탱크로부터 공급된 액화가스와 상기 저압압축부에 의해 압축된 유체를 혼합시키는 믹서와, 상기 제2연료공급라인의 가압펌프 전단으로부터 분기되어 상기 믹서와 연결되며, 상기 믹서로 상기 저장탱크로부터 공급된 액화가스 중 적어도 일부를 공급하는 액화가스합류라인과, 상기 혼합된 유체를 상기 제1수요처의 연료공급조건에 맞게 기화시키는 제1기화기를 더 포함할 수 있다.a mixer provided in the first fuel supply line and mixing the liquefied gas supplied from the storage tank with the fluid compressed by the low-pressure compression unit, and the mixer branched from the front end of the pressurization pump of the second fuel supply line A liquefied gas confluence line connected to the mixer for supplying at least a portion of the liquefied gas supplied from the storage tank to the mixer, and a first vaporizer for vaporizing the mixed fluid according to the fuel supply condition of the first consumer. can

상기 제2연료공급라인에 마련되며, 상기 열교환부를 통과한 상기 가압된 액화가스를 상기 제2수요처의 연료공급조건에 맞게 기화시키는 제2기화기를 더 포함할 수 있다.A second vaporizer is provided in the second fuel supply line and vaporizes the pressurized liquefied gas that has passed through the heat exchange unit according to the fuel supply condition of the second consumer.

본 발명의 실시 예에 의한 선박의 연료공급시스템은 저장탱크 내부에서 발생한 증발가스를 저압으로 압축하여 저압 수요처로 공급함으로써 운용 효율성을 높일 수 있다.The fuel supply system for a ship according to an embodiment of the present invention can increase operational efficiency by compressing the boil-off gas generated inside the storage tank to a low pressure and supplying it to a low pressure demanding place.

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 above-mentioned effects, 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 일 실시 예에 의한 선박의 연료공급시스템을 도시한다.
도 2는 도 1에 도시된 열교환부가 2개로 분리되어 적용된 모습을 나타낸 것이다.
도 3은 본 발명의 다른 실시 예에 의한 선박의 연료공급시스템을 도시한다.1 shows a fuel supply system for a ship according to an embodiment of the present invention.
FIG. 2 shows a state in which the heat exchange unit shown in FIG. 1 is separated into two and applied.
3 shows a fuel supply system for a ship according to another embodiment of the present invention.

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 spirit of the present invention can be sufficiently conveyed to those of ordinary skill in the art to which the present invention pertains. 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 irrelevant 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.

도 1은 본 발명의 일 실시 예에 의한 선박의 연료공급시스템을 도시하고, 도 2는 도 1에 도시된 열교환부가 2개로 분리되어 적용된 모습을 나타낸 것이다.1 shows a fuel supply system for a ship according to an embodiment of the present invention, and FIG. 2 shows a state in which the heat exchange unit shown in FIG. 1 is separated into two and applied.

도 1과 도 2를 참조하면, 본 발명의 일 실시 예에 따른 선박의 연료공급시스템(100)은 저장탱크(102)로부터 공급받은 증발가스를 저압 연료를 필요로 하는 제1수요처(E1)의 연료공급조건에 맞게 압축시키는 저압압축부(110)와, 저압압축부(110)에 의해 압축된 증발가스 중 제1수요처(E1)의 연료공급량을 초과한 유량을 액화시키는 열교환부(120)와, 열교환부(120)를 통과한 액화된 유체를 팽창시키는 팽창기(130)와, 팽창기(130)에 의해 팽창된 유체를 기액 분리시키는 기액분리기(140)와, 저장탱크(102), 저압압축부(110), 열교환부(120), 팽창기(130) 및 기액분리기(140)를 연결하며, 기액분리기(140)에 의해 분리된 기체성분을 열교환부(120)를 거쳐 저압압축부(110)의 전단으로 공급하는 증발가스공급라인(L10)과, 증발가스공급라인(L10)의 저압압축부(110)와 열교환부(120) 사이로부터 분기되어, 제1수요처(E1)와 연결된 제1연료공급라인(L11)과, 저장탱크(102)로부터 공급받은 액화가스를 가압하는 가압펌프(150)와, 저장탱크(102), 가압펌프(150), 열교환부(120) 및 제1수요처(E1)보다 큰 압력의 연료를 필요로 하는 제2수요처(E2)를 연결하며, 가압펌프(150)에 의해 가압된 액화가스를 열교환부(120)를 거쳐 제2수요처(E2)로 공급하는 제2연료공급라인(L12)을 포함한다.1 and 2 , the fuel supply system 100 for a ship according to an embodiment of the present invention uses the boil-off gas supplied from the storage tank 102 of the first consumer E1 requiring low-pressure fuel. A low-pressure compression unit 110 for compressing according to the fuel supply conditions, and a heat exchange unit 120 for liquefying a flow rate exceeding the fuel supply amount of the first consumer E1 among the boil-off gas compressed by the low-pressure compression unit 110 and , an expander 130 that expands the liquefied fluid that has passed through the heat exchange unit 120 , a gas-liquid separator 140 that separates the fluid expanded by the expander 130 , a storage tank 102 , and a low-compression unit 110 , the heat exchange unit 120 , the expander 130 and the gas-liquid separator 140 are connected, and the gas component separated by the gas-liquid separator 140 passes through the heat exchange unit 120 to the low-pressure compression unit 110 . The first fuel supply is branched from between the boil-off gas supply line L10 supplied to the front end, and the low-pressure compression unit 110 and the heat exchange unit 120 of the boil-off gas supply line L10, and connected to the first consumer E1. A line L11, a pressurization pump 150 for pressurizing the liquefied gas supplied from the storage tank 102, the storage tank 102, the pressurization pump 150, the heat exchange unit 120, and the first consumer E1 Second fuel that connects the second consumer E2 that requires fuel with a greater pressure, and supplies the liquefied gas pressurized by the pressurization pump 150 to the second consumer E2 through the heat exchange unit 120 . It includes a supply line (L12).

또, 연료공급시스템(100)은 제1수요처(E1)와 연결된 제1연료공급라인(L11)과, 제1연료공급라인(L11)에 마련되며, 저압압축부(110)에 의해 압축된 유체를 제1수요처(E1)의 연료공급조건에 맞게 냉각시키는 냉각기(155)와, 저장탱크(102)로부터 액화가스 중 적어도 일부를 공급받아 제1수요처(E1)의 연료공급조건에 맞게 기화시키는 제1기화기(160)와, 제2연료공급라인(L12)의 가압펌프(150) 전단으로부터 분기되어 제1연료공급라인(L11)의 냉각기(155) 후단을 연결하며, 제1기화기(160)에 의해 기화된 유체를 제1연료공급라인(L11)에 합류시키는 액화가스합류라인(L13)을 포함할 수 있다.In addition, the fuel supply system 100 is provided in the first fuel supply line L11 connected to the first consumer E1 and the first fuel supply line L11, and the fluid compressed by the low-pressure compression unit 110 . A cooler 155 for cooling the fuel in accordance with the fuel supply condition of the first consumer E1, and a system that receives at least a portion of the liquefied gas from the storage tank 102 and vaporizes it according to the fuel supply condition of the first consumer E1. The first carburetor 160 is branched from the front end of the pressurization pump 150 of the second fuel supply line L12 and connects the rear end of the cooler 155 of the first fuel supply line L11, and the first carburetor 160 is It may include a liquefied gas joining line (L13) for joining the vaporized fluid to the first fuel supply line (L11).

또, 연료공급시스템(100)은 제2연료공급라인(L12)에 마련되며, 열교환부(120)를 통과한 가압된 액화가스를 제2수요처(E2)의 연료공급조건에 맞게 기화시키는 제2기화기(170)를 포함할 수 있다.In addition, the fuel supply system 100 is provided in the second fuel supply line L12, and vaporizes the pressurized liquefied gas that has passed through the heat exchange unit 120 to meet the fuel supply conditions of the second consumer E2. A vaporizer 170 may be included.

이하, 연료공급시스템(100)의 각 구성요소와 함께 동작 과정에 대해서 구체적으로 설명한다.Hereinafter, an operation process with 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 provided on various ships including.

저장탱크(102)는 예컨대 액화가스로서 LNG(Liquefied Natural Gas)를 저장할 수 있으며, 단열상태를 유지하면서 연료를 액화상태로 저장하는 멤브레인형 탱크, SPB형 탱크 등을 포함할 수 있다. The storage tank 102 may store, for example, LNG (Liquefied Natural Gas) as a liquefied gas, and may include a membrane type tank, an SPB type tank, and the like for storing fuel in a liquefied state while maintaining a thermal insulation state.

저장탱크(102)에 저장된 액화가스의 증발가스는 증발가스공급라인(L10)을 통해 증발가스공급라인(L10) 및 제1연료공급라인(L11) 쪽으로 공급되고, 저장탱크(102)에 저장된 액화가스는 저장탱크(102) 내부에 마련된 펌프(P)에 의해 펌핑되어, 제2연료공급라인(L12) 및 액화가스합류라인(L13) 쪽으로 공급된다.BOG of the liquefied gas stored in the storage tank 102 is supplied to the BOG supply line L10 and the first fuel supply line L11 through the BOG supply line L10, and the liquefied gas stored in the storage tank 102 is supplied to the BOG. The gas is pumped by the pump (P) provided in the storage tank 102, and is supplied to the second fuel supply line (L12) and the liquefied gas junction line (L13).

여기서, 증발가스공급라인(L10)은 저장탱크(102), 저압압축부(110), 열교환부(120), 팽창기(130) 및 기액분리기(140)를 연결한다.Here, the boil-off gas supply line L10 connects the storage tank 102 , the low-pressure compression unit 110 , the heat exchange unit 120 , the expander 130 , and the gas-liquid separator 140 .

제1연료공급라인(L11)은 증발가스공급라인(L10)의 저압압축부(110)와 열교환부(120) 사이로부터 분기되어, 냉각기(155) 및 제1수요처(E1)를 연결한다. 제1수요처(E1)는 예컨대 발전용 엔진 등을 포함할 수 있다.The first fuel supply line L11 is branched from between the low-pressure compression unit 110 and the heat exchange unit 120 of the boil-off gas supply line L10, and connects the cooler 155 and the first consumer E1. The first demand E1 may include, for example, an engine for power generation.

제2연료공급라인(L12)은 저장탱크(102), 가압펌프(150), 열교환부(120) 및 제1수요처(E1)보다 큰 압력의 연료를 필요로 하는 제2수요처(E2)를 연결한다. 여기서, 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 fuel supply line L12 connects the storage tank 102 , the pressurization pump 150 , the heat exchange unit 120 , and the second consumer E2 that requires fuel at a pressure greater than that of the first consumer E1 . do. Here, the second consumer E2 is, for example, a high-pressure (about 150-700 bar) injection engine such as an ME-GI engine (Man B&W's gas injection engine) and a medium-pressure (about 16-18 bar) fuel gas that is an X-DF engine. It may include a medium-pressure gas injection engine capable of combustion.

액화가스합류라인(L13)은 제2연료공급라인(L12)의 가압펌프(150) 전단으로부터 분기되어 제1연료공급라인(L11)의 냉각기(155) 후단을 연결한다.The liquefied gas junction line L13 is branched from the front end of the pressurization pump 150 of the second fuel supply line L12 and connects the rear end of the cooler 155 of the first fuel supply line L11.

저압압축부(110)는 저압 연료를 필요로 하는 제1수요처(E1)의 연료공급조건에 맞게 증발가스를 압축시킬 수 있으며, 가열기(111)와 압축기(112)를 포함한다. The low-pressure compression unit 110 may compress the boil-off gas according to the fuel supply conditions of the first consumer E1 requiring low-pressure fuel, and includes a heater 111 and a compressor 112 .

가열기(111)는 저장탱크(102)로부터 공급받은 증발가스를 압축기(112)의 공급조건에 맞게 가열시킬 수 있다.The heater 111 may heat the boil-off gas supplied from the storage tank 102 according to the supply conditions of the compressor 112 .

압축기(112)는 1단으로 마련될 수 있으며, 가열기(111)에 의해 가열된 유체를 저압 연료를 필요로 하는 제1수요처(E1)의 연료공급조건에 맞게 압축시킬 수 있다. 압축기(112)는 예컨대 가열기(111)에 의해 가열된 유체를 대략 18barg로 압축시킬 수 있다.The compressor 112 may be provided in one stage, and may compress the fluid heated by the heater 111 according to the fuel supply condition of the first consumer E1 requiring low-pressure fuel. Compressor 112 may, for example, compress the fluid heated by heater 111 to approximately 18 barg.

종래에는 다단의 압축기를 포함하는 압축부를 통해 고압으로 증발가스를 압축시킨 후 저압 수요처의 연료로 공급하기 위해 대량의 감압을 수행해야 했으나, 본 발명의 실시 예를 통해 1단의 압축기(112)에 의해 해당 유체를 저압으로 압축시킨 후 제1연료공급라인(L11)을 통해 저압 연료를 필요로 하는 제1수요처(E1)로 바로 공급할 수 있다.Conventionally, after compressing the boil-off gas at high pressure through a compression unit including a multi-stage compressor, a large amount of decompression has to be performed in order to supply it as fuel to a low-pressure consumer. After the corresponding fluid is compressed to a low pressure, it can be directly supplied to the first consumer E1 requiring low pressure fuel through the first fuel supply line L11.

열교환부(120)는 압축기(112)에 의해 압축된 증발가스 중 제1수요처(E1)의 연료공급량을 초과한 유량을 액화시킨다.The heat exchange unit 120 liquefies the flow rate exceeding the fuel supply amount of the first consumer E1 among the boil-off gas compressed by the compressor 112 .

팽창기(130)는 열교환부(120)를 통과한 액화된 유체를 팽창시키고, 기액분리기(140)는 팽창기(130)에 의해 팽창된 유체를 기액 분리시킨다.The expander 130 expands the liquefied fluid that has passed through the heat exchange unit 120 , and the gas-liquid separator 140 separates the fluid expanded by the expander 130 into gas-liquid.

기액분리기(140)에 의해 분리된 액체성분은 회수라인(L14)을 통해 저장탱크(102)로 회수되고, 기액분리기(140)에 의해 분리된 기체성분은 증발가스공급라인(L10)을 통해 열교환부(120)를 거친 후, 증발가스공급라인(L10)의 저압압축부(110) 전단으로 공급된다.The liquid component separated by the gas-liquid separator 140 is recovered to the storage tank 102 through the recovery line L14, and the gas component separated by the gas-liquid separator 140 is heat exchanged through the boil-off gas supply line L10. After passing through the unit 120, it is supplied to the front end of the low-pressure compression unit 110 of the boil-off gas supply line (L10).

여기서, 상술한 압축기(112)에 의해 압축된 증발가스 중 제1수요처(E1)의 연료공급량을 초과한 유량은 열교환부(120)에서 가압펌프(150)에 의해 가압된 액화가스와 1차 열교환되고, 기액분리기(140)에 의해 분리된 기체성분과 2차 열교환된다.Here, the flow rate exceeding the fuel supply amount of the first consumer E1 among the boil-off gas compressed by the compressor 112 is primary heat exchange with the liquefied gas pressurized by the pressure pump 150 in the heat exchange unit 120 . and secondary heat exchange with the gas component separated by the gas-liquid separator 140 .

이에 도 2에 도시한 바와 같이, 열교환부(120)는 저압압축부(110)에 의해 압축된 증발가스와 가압펌프(150)에 의해 가압된 액화가스 간 1차 열교환을 수행하는 제1열교환기(120a)와, 제1열교환부(120)를 통과한 압축된 증발가스와 기액분리기(140)에 의해 분리된 기체성분 간 2차 열교환을 수행하는 제2열교환기(120b)를 포함할 수 있다.Accordingly, as shown in FIG. 2 , the heat exchange unit 120 is a first heat exchanger that performs primary heat exchange between the boil-off gas compressed by the low-pressure compression unit 110 and the liquefied gas pressurized by the pressurization pump 150 . (120a), and a second heat exchanger (120b) for performing secondary heat exchange between the compressed boil-off gas that has passed through the first heat exchange unit 120 and the gas component separated by the gas-liquid separator 140 may be included. .

기액분리기(140)에 의해 분리된 기체성분은 열교환부(120)에서 저압압축부(110)를 통과한 유체와 열교환되어 저압압축부(110)를 통과한 유체를 액화시키고 자신은 가열된 상태에서 저압압축부(110)에 포함된 가열기(111) 전단으로 공급되므로, 가열기(111)의 에너지 소모량을 줄일 수 있다.The gas component separated by the gas-liquid separator 140 is heat-exchanged with the fluid that has passed through the low-pressure compression unit 110 in the heat exchange unit 120 to liquefy the fluid that has passed through the low-pressure compression unit 110, and is in a heated state. Since it is supplied to the front end of the heater 111 included in the low-pressure compression unit 110 , it is possible to reduce the energy consumption of the heater 111 .

냉각기(155)는 제1연료공급라인(L11)에 마련되며, 저압압축부(110)에 의해 압축된 유체를 제1수요처(E1)의 연료공급조건에 맞게 냉각시킨다. 냉각기(155)에 의해 냉각된 유체는 제1연료공급라인(L11)을 통해 제1수요처(E1)로 공급된다.The cooler 155 is provided in the first fuel supply line L11, and cools the fluid compressed by the low compression unit 110 according to the fuel supply condition of the first consumer E1. The fluid cooled by the cooler 155 is supplied to the first consumer E1 through the first fuel supply line L11.

제1기화기(160)는 저장탱크(102)로부터 액화가스 중 적어도 일부를 공급받아 제1수요처(E1)의 연료공급조건에 맞게 기화시킨다. 제1기화기(160)에 의해 기화된 유체는 제2연료공급라인(L12)의 가압펌프(150) 전단으로부터 분기되어 제1연료공급라인(L11)의 냉각기(155) 후단을 연결하는 액화가스합류라인(L13)에 의해 제1연료공급라인(L11)에 합류된다.The first vaporizer 160 receives at least a portion of the liquefied gas from the storage tank 102 and vaporizes it according to the fuel supply condition of the first consumer E1. The fluid vaporized by the first vaporizer 160 is branched from the front end of the pressurization pump 150 of the second fuel supply line L12 and liquefied gas joins to connect the rear end of the cooler 155 of the first fuel supply line L11. It is joined to the first fuel supply line L11 by the line L13.

제2기화기(170)는 제2연료공급라인(L12)에 마련되며, 열교환부(120)를 통과한 가압된 액화가스를 제2수요처(E2)의 연료공급조건에 맞게 기화시킨다.The second vaporizer 170 is provided in the second fuel supply line L12, and vaporizes the pressurized liquefied gas that has passed through the heat exchange unit 120 to meet the fuel supply conditions of the second consumer E2.

도 3은 본 발명의 다른 실시 예에 의한 선박의 연료공급시스템을 도시한다.3 shows a fuel supply system for a ship according to another embodiment of the present invention.

도 3을 참조하면, 본 발명의 다른 실시 예에 따른 연료공급시스템(100)은 증발가스공급라인(L11)의 저압압축부(110)와 열교환부(120) 사이로부터 분기되어, 제1수요처(E1)와 연결된 제1연료공급라인(L13)과, 제1연료공급라인(L13)에 마련되며, 저장탱크(102)로부터 공급된 액화가스와 저압압축부(110)에 의해 압축된 유체를 혼합시키는 믹서(180)와, 제2연료공급라인(L12)의 가압펌프(150) 전단으로부터 분기되어 믹서(180)와 연결되며, 믹서(180)로 저장탱크(102)로부터 공급된 액화가스 중 적어도 일부를 공급하는 액화가스합류라인(L14)과, 믹서(180)에 의해 혼합된 유체를 제1수요처(E1)의 연료공급조건에 맞게 기화시키는 제1기화기(160)를 포함할 수 있다.Referring to FIG. 3 , the fuel supply system 100 according to another embodiment of the present invention is branched from between the low-pressure compression unit 110 and the heat exchange unit 120 of the boil-off gas supply line L11, and the first consumer ( The first fuel supply line L13 connected to E1) and the first fuel supply line L13 are provided to mix the liquefied gas supplied from the storage tank 102 and the fluid compressed by the low-pressure compression unit 110 . At least among the mixer 180 and the liquefied gas supplied from the storage tank 102 to the mixer 180 , branched from the front end of the pressurization pump 150 of the second fuel supply line L12 and connected to the mixer 180 . It may include a liquefied gas junction line L14 for supplying a portion, and a first vaporizer 160 for vaporizing the fluid mixed by the mixer 180 in accordance with the fuel supply conditions of the first consumer E1.

여기서, 믹서(180)는 저장탱크(102)로부터 공급된 액화가스와 저압압축부(110)에 의해 압축된 유체를 혼합시킨다. 믹서(180)에 의해 혼합된 유체는 제1연료공급라인(L11)에 마련된 제1기화기(160)를 거쳐 제1수요처(E1)의 연료공급조건에 맞게 기화된 후 제1수요처(E1)로 공급된다.Here, the mixer 180 mixes the liquefied gas supplied from the storage tank 102 and the fluid compressed by the low compression unit 110 . The fluid mixed by the mixer 180 passes through the first vaporizer 160 provided in the first fuel supply line L11 and is vaporized according to the fuel supply conditions of the first consumer E1 and then to the first consumer E1. is supplied

이를 통해, 상술한 냉각기(155, 도 1 참조)를 생략할 수 있고, 보다 효율적인 시스템 운영이 수행될 수 있다.Through this, the above-described cooler 155 (refer to FIG. 1 ) may be omitted, and more efficient system operation may be performed.

이와 같이 본 발명의 실시 예를 통해 종래의 고압 다단 압축기와 달리 1단의 저압 압축기(112)를 적용하여 초기 투자비 및 운전 비용을 최소화할 수 있으며, 운전 편의성 증대 및 고압 위험 구역 최소화로 안전성을 향상시킬 수 있다.As described above, according to the embodiment of the present invention, the initial investment and operation cost can be minimized by applying the low-pressure compressor 112 of one stage, unlike the conventional high-pressure multi-stage compressor, and the safety is improved by increasing the operation convenience and minimizing the high-pressure danger zone. can do it

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 a general Molier Diagram (pressure-enthalpy diagram) of BOG, in the prior art, cooling was performed in a high-pressure region above a critical point in order to reduce energy consumed for liquefying BOG.

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 the embodiment of the present invention, in order to reduce the energy required to liquefy the BOG, the process of boosting the BOG to a high pressure is unnecessary, and the liquefaction efficiency can be improved even at a low pressure. have.

본 발명은 실시 예에서 열교환부(120)를 통해 액화가스의 냉열을 회수하여 증발가스를 액화시킬 수 있도록 하여, 각 부분의 냉열과 현열을 조화시켜 외부로부터 가져와야 하는 에너지를 줄일 수 있다.In an embodiment, the present invention recovers the cooling heat of the liquefied gas through the heat exchange unit 120 to liquefy the boil-off gas, thereby reducing the energy that must be brought from the outside by harmonizing the cooling heat and sensible heat of each part.

또, 증발가스 사용을 최소화하여 가벼운 탄화수소 성분을 효과적으로 보존할 수 있어 저장탱크(102) 내 연료 성분을 양호하게 유지할 수 있다.In addition, it is possible to effectively preserve the light hydrocarbon component by minimizing the use of boil-off gas, so that the fuel component in the storage tank 102 can be maintained well.

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 have been shown and described. However, the present invention is not limited to the above-described embodiments, and those of ordinary skill in the art to which the invention pertains can make various changes without departing from the spirit of the invention described in the claims below. will be able

110: 저압압축부 120: 열교환부
120a: 제1열교환기 120b: 제2열교환기
130: 팽창기 140: 기액분리기
150: 가압펌프 155: 냉각기
160: 제1기화기 170: 제2기화기
180: 믹서
L10: 증발가스공급라인 L11: 제1연료공급라인
L12: 제2연료공급라인 L13: 액화가스합류라인110: low compression unit 120: heat exchange unit
120a: first heat exchanger 120b: second heat exchanger
130: expander 140: gas-liquid separator
150: pressurized pump 155: cooler
160: first vaporizer 170: second vaporizer
180: mixer
L10: BOG supply line L11: First fuel supply line
L12: Second fuel supply line L13: Liquefied gas junction line

Claims (5)

저장탱크로부터 공급받은 증발가스를 저압 연료를 필요로 하는 제1수요처의 연료공급조건에 맞게 압축시키는 저압압축부;
상기 압축된 증발가스 중 상기 제1수요처의 연료공급량을 초과한 유량을 액화시키는 열교환부;
상기 열교환부를 통과한 상기 액화된 유체를 팽창시키는 팽창기;
상기 팽창된 유체를 기액 분리시키는 기액분리기;
상기 저장탱크, 저압압축부, 열교환부, 팽창기 및 기액분리기를 연결하며, 상기 기액분리기에 의해 분리된 기체성분을 상기 열교환부를 거쳐 상기 저압압축부의 전단으로 공급하는 증발가스공급라인;
상기 증발가스공급라인의 상기 저압압축부와 열교환부 사이로부터 분기되어, 상기 제1수요처와 연결된 제1연료공급라인;
상기 저장탱크로부터 공급받은 액화가스를 가압하는 가압펌프; 및
상기 저장탱크, 가압펌프, 열교환부 및 상기 제1수요처보다 큰 압력의 연료를 필요로 하는 제2수요처를 연결하며, 상기 가압된 액화가스를 상기 열교환부를 거쳐 상기 제2수요처로 공급하는 제2연료공급라인;을 포함하는 선박의 연료공급시스템.a low-pressure compression unit for compressing the boil-off gas supplied from the storage tank according to the fuel supply conditions of the first consumer requiring low-pressure fuel;
a heat exchange unit for liquefying a flow rate of the compressed BOG exceeding the fuel supply amount of the first consumer;
an expander for expanding the liquefied fluid that has passed through the heat exchange unit;
a gas-liquid separator for gas-liquid separation of the expanded fluid;
a boil-off gas supply line connecting the storage tank, the low-pressure compression unit, the heat exchange unit, the expander, and the gas-liquid separator, and supplying the gas component separated by the gas-liquid separator to the front end of the low-pressure compression unit through the heat exchange unit;
a first fuel supply line branched from between the low-pressure compression unit and the heat exchange unit of the boil-off gas supply line and connected to the first consumer;
a pressurizing pump for pressurizing the liquefied gas supplied from the storage tank; and
Second fuel for connecting the storage tank, the pressurization pump, the heat exchange unit, and a second consumer that requires fuel at a pressure greater than that of the first consumer, and supplying the pressurized liquefied gas to the second consumer through the heat exchange unit A fuel supply system for a ship, including a supply line. 제1항에 있어서,
상기 열교환부는 상기 저압압축부에 의해 압축된 증발가스와 상기 가압펌프에 의해 가압된 액화가스 간 열교환을 수행하는 제1열교환기와,
상기 제1열교환부를 통과한 상기 압축된 증발가스와 상기 기액분리기에 의해 분리된 기체성분 간 열교환을 수행하는 제2열교환기를 포함하는 선박의 연료공급시스템.According to claim 1,
The heat exchange unit comprises a first heat exchanger performing heat exchange between the boil-off gas compressed by the low-pressure compression unit and the liquefied gas pressurized by the pressurization pump;
and a second heat exchanger for performing heat exchange between the compressed boil-off gas that has passed through the first heat exchanger and the gas component separated by the gas-liquid separator. 제1항에 있어서,
상기 제1연료공급라인에 마련되며, 상기 저압압축부에 의해 압축된 유체를 상기 제1수요처의 연료공급조건에 맞게 냉각시키는 냉각기와,
상기 저장탱크로부터 액화가스 중 적어도 일부를 공급받아 상기 제1수요처의 연료공급조건에 맞게 기화시키는 제1기화기와,
상기 제2연료공급라인의 가압펌프 전단으로부터 분기되어 상기 제1연료공급라인의 냉각기 후단을 연결하며, 상기 제1기화기에 의해 기화된 유체를 상기 제1연료공급라인에 합류시키는 액화가스합류라인을 더 포함하는 선박의 연료공급시스템.According to claim 1,
a cooler provided in the first fuel supply line and cooling the fluid compressed by the low-pressure compression unit according to the fuel supply condition of the first consumer;
a first vaporizer that receives at least a portion of the liquefied gas from the storage tank and vaporizes it according to the fuel supply condition of the first demand;
a liquefied gas confluence line branching from the front end of the pressurization pump of the second fuel supply line, connecting the rear end of the cooler of the first fuel supply line, and joining the fluid vaporized by the first vaporizer to the first fuel supply line; Ship's fuel supply system further comprising. 제1항에 있어서,
상기 제1연료공급라인에 마련되며, 상기 저장탱크로부터 공급된 액화가스와 상기 저압압축부에 의해 압축된 유체를 혼합시키는 믹서와,
상기 제2연료공급라인의 가압펌프 전단으로부터 분기되어 상기 믹서와 연결되며, 상기 믹서로 상기 저장탱크로부터 공급된 액화가스 중 적어도 일부를 공급하는 액화가스합류라인과,
상기 혼합된 유체를 상기 제1수요처의 연료공급조건에 맞게 기화시키는 제1기화기를 더 포함하는 선박의 연료공급시스템.According to claim 1,
a mixer provided in the first fuel supply line and mixing the liquefied gas supplied from the storage tank with the fluid compressed by the low-pressure compression unit;
a liquefied gas confluence line branched from the front end of the pressurization pump of the second fuel supply line and connected to the mixer, and supplying at least a portion of the liquefied gas supplied from the storage tank to the mixer;
The fuel supply system of a ship further comprising a first vaporizer for vaporizing the mixed fluid according to the fuel supply condition of the first demand. 제1항에 있어서,
상기 제2연료공급라인에 마련되며, 상기 열교환부를 통과한 상기 가압된 액화가스를 상기 제2수요처의 연료공급조건에 맞게 기화시키는 제2기화기를 더 포함하는 선박의 연료공급시스템.According to claim 1,
The fuel supply system of a ship further comprising a second vaporizer provided in the second fuel supply line and vaporizing the pressurized liquefied gas that has passed through the heat exchange unit in accordance with the fuel supply condition of the second consumer.
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Citations (1)

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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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