KR20090131988A - System and method for supplying fuel in lpg carrier - Google Patents

System and method for supplying fuel in lpg carrier Download PDF

Info

Publication number
KR20090131988A
KR20090131988A KR1020080058023A KR20080058023A KR20090131988A KR 20090131988 A KR20090131988 A KR 20090131988A KR 1020080058023 A KR1020080058023 A KR 1020080058023A KR 20080058023 A KR20080058023 A KR 20080058023A KR 20090131988 A KR20090131988 A KR 20090131988A
Authority
KR
South Korea
Prior art keywords
lpg
storage tank
boil
fuel
main engine
Prior art date
Application number
KR1020080058023A
Other languages
Korean (ko)
Inventor
손관원
권순빈
양헌용
김남수
Original Assignee
대우조선해양 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 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020080058023A priority Critical patent/KR20090131988A/en
Publication of KR20090131988A publication Critical patent/KR20090131988A/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/16—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor characterised by the distributor being fed from a constant pressure source, e.g. accumulator or constant pressure positive displacement pumps
    • 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

Landscapes

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

Abstract

PURPOSE: A system and a method for supplying fuel in an LPG carrier is provided to reduce the size of a vaporized gas re-liquefying device and reduce the operation cost by using LPG or the vaporized gas generated in an LPG storage tank. CONSTITUTION: A system and a method for supplying fuel in an LPG carrier comprises an LPG fuel supply line(L1) and a vaporized gas supplying line(L2) for fuel. The LPG fuel supply line pulls out the LPG from the lower part of an LPG storage tank(1) and compresses the LPG with high pressure and vaporizes the LPG. The LPG fuel supply line supplies the vaporized LPG to a main engine(2). The vaporized gas supply line for fuel compresses the vaporized gas with high pressure from the upper part of the LPG storage tank. The vaporized gas supply line for the fuel supplies the vaporized gas compacted with the high pressure to the main engine.

Description

ＬＰＧ 운반선의 연료 공급 시스템 및 방법{SYSTEM AND METHOD FOR SUPPLYING FUEL IN LPG CARRIER}Fuel supply system and method of LP carrier {SYSTEM AND METHOD FOR SUPPLYING FUEL IN LPG CARRIER}

본 발명은 LPG 운반선의 연료 공급 시스템 및 방법에 관한 것으로서, 더욱 상세하게는, LPG를 LPG 저장탱크에 저장하여 수송하는 LPG 운반선에서 메인 엔진으로 연료를 공급하는 LPG 운반선의 연료 공급 시스템 및 방법에 관한 것이다.The present invention relates to a fuel supply system and method of the LPG carrier, and more particularly, to a fuel supply system and method of the LPG carrier for supplying fuel to the main engine in the LPG carrier to store and transport the LPG in the LPG storage tank. will be.

일반적으로, 석유가스는 생산지에서 저온으로 액화된 액화석유가스(Liquefied Petroleum Gas, 이하 LPG라 함)의 상태로 만들어진 후 LPG 운반선에 의해 목적지까지 원거리에 걸쳐 수송된다.In general, petroleum gas is produced in the form of liquefied liquefied petroleum gas (Liquefied Petroleum Gas, hereinafter referred to as LPG) at the production site and then transported to a destination by LPG carriers over a long distance.

석유가스의 액화온도는 상압 약 -42℃의 저온이므로, LPG는 그 온도가 상압 -42℃ 보다 약간만 높아도 증발된다. LPG 운반선의 LPG 저장탱크의 경우 단열처리가 되어 있기는 하지만, 외부의 열이 LPG에 지속적으로 전달되므로, LPG 운반선에 의해 LPG를 수송하는 도중에 LPG가 LPG 저장탱크 내에서 지속적으로 기화되어 LPG 저장탱크 내에 증발가스(Boil-Off Gas)가 발생한다.Since the liquefaction temperature of petroleum gas is low temperature of about -42 degreeC of atmospheric pressure, LPG will evaporate even if the temperature is slightly higher than the normal pressure of -42 degreeC. In case of LPG storage tank of LPG carrier, it is insulated but external heat is continuously transferred to LPG, so LPG is continuously vaporized in LPG storage tank while LPG is being transported by LPG carrier. Boil-Off Gas is generated inside.

종래의 LPG 운반선에서는, LPG 저장탱크 내에 증발가스가 축적되면 LPG 저장탱크 내의 압력이 과도하게 상승하므로, LPG 저장탱크 내에서 발생되는 증발가스를 처리하기 위해 증발가스 재액화 장치를 사용하였다.In the conventional LPG carrier, since the pressure in the LPG storage tank is excessively increased when the boil-off gas is accumulated in the LPG storage tank, the boil-off gas reliquefaction apparatus is used to treat the boil-off gas generated in the LPG storage tank.

그러나, 흡입 펌프, 왕복 압축기, 냉각기, 응축기, 팽창 밸브 등으로 구성되어 증발가스를 응축시켜 재액화시키는 증발가스 재액화 장치를 사용하면, 많은 양의 전력이 소모되므로 운전 비용이 증가할 뿐만 아니라 초기 시설 투자비를 상승시키고 또한 선박의 한정된 공간에 대형의 장치를 설치해야 하므로 장치의 수리를 위한 공간을 확보하기가 어려운 문제점이 있다.However, using an evaporative gas reliquefaction device composed of a suction pump, a reciprocating compressor, a cooler, a condenser, an expansion valve, and the like to condense and reliquefy the evaporated gas, consumes a large amount of power, thereby increasing operating costs and providing an initial facility. There is a problem that it is difficult to secure a space for repairing the device because the investment cost must be increased and a large device must be installed in a limited space of the ship.

한편, 종래의 LPG 운반선은 선박의 추진 연료로서 벙커C유 등의 중유를 사용하는 연료 공급 시스템을 채용하고 있는데, 이러한 중유 연료 공급 시스템은 중유 연료 사용에 따른 배기가스의 방출로 인한 환경오염 규제의 강화로 황 성분이 적은 중유 연료 탱크(LSHFO tank)를 별도로 설치해야 하므로, 보다 친환경적인 신개념의 연료 공급 시스템을 개발할 필요성이 있다.Meanwhile, a conventional LPG carrier employs a fuel supply system using heavy oil such as bunker C oil as a propulsion fuel of a ship, and the heavy oil fuel supply system is regulated by environmental pollution due to emission of exhaust gas by using heavy oil fuel. As the reinforcement requires the installation of a low sulfur fuel oil tank (LSHFO tank), there is a need to develop a new environmentally friendly fuel supply system.

따라서, 본 발명은, 이러한 종래기술의 문제점을 해결하고 필요성을 충족시키기 위한 것으로서, LPG 운반선의 LPG 저장탱크에 저장된 LPG 또는 LPG 저장탱크서 발생한 증발가스를 메인 엔진의 연료로서 사용할 수 있도록 구성된 LPG 운반선의 연료 공급 시스템 및 방법을 제공하는 것을 그 목적으로 한다. Accordingly, the present invention is to solve the problems of the prior art and to meet the necessity, the LPG carrier configured to use the boil-off gas generated in the LPG storage tank LPG storage tank or LPG storage tank of the LPG carrier tank as fuel of the main engine It is an object of the present invention to provide a fuel supply system and method.

전술한 목적을 달성하기 위해, 본 발명의 LPG 운반선의 연료 공급 시스템은, LPG를 LPG 저장탱크에 저장하여 수송하는 LPG 운반선의 메인 엔진에 연료를 공급하 는 시스템으로서, 상기 LPG 저장탱크의 하부로부터 LPG를 빼내어서 고압으로 압축한 후 기화시켜 상기 메인 엔진으로 공급하는 LPG 연료 공급라인과, 상기 LPG 저장탱크의 상부로부터 증발가스를 빼내어서 고압으로 압축한 후 상기 메인 엔진으로 공급하는 연료용 증발가스 공급라인을 포함하는 것을 특징으로 한다.In order to achieve the above object, the fuel supply system of the LPG carrier of the present invention is a system for supplying fuel to the main engine of the LPG carrier to store and transport LPG in the LPG storage tank, from the lower portion of the LPG storage tank The LPG fuel supply line which extracts LPG, compresses it to high pressure, vaporizes it, and supplies it to the main engine, and extracts the boil-off gas from the upper part of the LPG storage tank, compresses it to high pressure, and supplies it to the main engine. It characterized in that it comprises a supply line.

또한, 본 발명의 LPG 운반선의 연료 공급 방법은, LPG를 LPG 저장탱크에 저장하여 수송하는 LPG 운반선의 메인 엔진에 연료를 공급하는 방법으로서,In addition, the fuel supply method of the LPG carrier of the present invention is a method of supplying fuel to the main engine of the LPG carrier that stores and transports LPG in the LPG storage tank,

상기 LPG 운반선의 LPG 저장탱크의 하부로부터 LPG를 빼내어서 상기 메인 엔진의 요구 압력에 맞게 압축하고 기화시켜서 상기 메인 엔진으로 공급하고, 상기 LPG 저장탱크의 상부로부터 증발가스를 빼내어서 상기 메인 엔진의 요구 압력에 맞게 압축한 후 상기 메인 엔진으로 공급하는 것을 특징으로 한다.The LPG is extracted from the lower portion of the LPG storage tank of the LPG carrier, compressed and vaporized according to the required pressure of the main engine, and supplied to the main engine, and the boil-off gas is extracted from the upper portion of the LPG storage tank to request the main engine. After compression according to the pressure is characterized in that the supply to the main engine.

전술한 바와 같이, 본 발명의 LPG 운반선의 연료 공급 시스템 및 방법에 의하면, LPG 운반선에서 LPG 저장탱크 내에 저장된 LPG 또는 LPG 저장탱크에서 발생된 증발가스를 메인 엔진의 연료로서 사용하므로, 증발가스 재액화 장치를 설계함에 있어 용량을 대폭 감소시켜 설계하거나 증발가스 재액화 장치를 삭제할 수 있어, 운전 비용이 감소되고 또한 초기 시설 투자비가 절감되는 이점이 있다.As described above, according to the fuel supply system and method of the LPG carrier of the present invention, since the LPG carrier in the LPG storage tank stored in the LPG storage tank or the evaporated gas generated in the LPG storage tank used as the fuel of the main engine, re-liquefied evaporated gas In designing the device, it is possible to design with a significant reduction in capacity or to eliminate the boil-off gas reliquefaction device, which reduces the operating costs and the initial capital investment.

특히, LPG 운반선에서 증발가스 재액화 장치의 용량이 대폭 감소되는 경우, 선박에서 증발가스 재액화 장치가 차지하는 공간이 대폭 감소되므로 증발가스 재액화 장치의 수리를 위한 공간을 충분히 확보할 수 있는 이점이 있다.In particular, when the capacity of the boil-off gas reliquefaction apparatus is greatly reduced in the LPG carrier, the space occupied by the boil-off gas reliquefaction apparatus in the ship is greatly reduced, thereby providing sufficient space for repair of the boil-off gas reliquefaction apparatus. have.

또한, LPG 운반선에서 LPG 저장탱크 내에 저장된 LPG 또는 LPG 저장탱크에서 발생된 증발가스를 메인 엔진의 연료로서 사용하면, 환경 오염을 일으키는 배기가스의 방출이 중유 연료 사용에 비해 감소될 뿐만 아니라 황 성분이 적은 중유 연료 탱크(LSHFO tank)를 별도로 설치하지 않아도 되는 이점이 있다.In addition, when LPG carriers use the LPG stored in the LPG storage tank or the evaporated gas generated in the LPG storage tank as the fuel of the main engine, not only the emission of the exhaust gas causing environmental pollution is reduced, but also the sulfur content is reduced. There is an advantage in that a small fuel oil tank (LSHFO tank) does not need to be installed separately.

이하, 첨부된 도면을 참조로 하여 본 발명의 바람직한 실시예를 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 LPG 운반선의 연료 공급 시스템의 개략적인 구성도이다. 도시된 바와 같이, 본 발명의 실시예에 따른 LPG 운반선의 연료 공급 시스템은 LPG 운반선의 메인 엔진에 연료를 공급하기 위한 것이다.1 is a schematic configuration diagram of a fuel supply system of an LPG carrier according to an embodiment of the present invention. As shown, the fuel supply system of the LPG carrier according to an embodiment of the present invention is for supplying fuel to the main engine of the LPG carrier.

본 발명의 연료 공급 시스템은, LPG 운반선의 LPG 저장탱크(1)의 하부로부터 LPG를 빼내어서 고압으로 압축한 후 기화시켜 메인 엔진(2)으로 공급하는 LPG 연료 공급라인(L1)과, LPG 저장탱크(1)의 상부로부터 증발가스를 빼내어서 고압으로 압축한 후 메인 엔진(2)으로 공급하는 연료용 증발가스 공급라인(L2)를 포함한다.The fuel supply system of the present invention, the LPG fuel supply line (L1) and LPG storage to remove the LPG from the lower portion of the LPG storage tank (1) of the LPG carrier ship, pressurized to high pressure and then vaporized and supplied to the main engine (2) It includes a boil-off gas supply line (L2) for supplying the boil-off gas from the top of the tank (1), compressed to high pressure, and then supplied to the main engine (2).

LPG 연료 공급라인(L1)은 LPG 저장탱크(1)로부터 메인 엔진(2)까지 연결되어 있다.The LPG fuel supply line L1 is connected to the main engine 2 from the LPG storage tank 1.

LPG 저장탱크(1)의 하부에는 LPG 저장탱크(1) 내의 LPG를 LPG 연료 공급라인(L1)으로 공급하는 LPG 공급 펌프(3)가 설치되어 있다.The LPG supply pump 3 which supplies LPG in LPG storage tank 1 to LPG fuel supply line L1 is provided in lower part of LPG storage tank 1.

LPG 연료 공급라인(L1)의 도중에는 압축 수단(4)과 기화 수단(5)이 차례로 설치되어 있다.In the middle of the LPG fuel supply line L1, a compression means 4 and a vaporization means 5 are provided in sequence.

본 실시예에서, 메인 엔진(2)은 예를 들어, MAN B&W Diesel 사에서 제조하여 판매하는 ME-GI 엔진 등의 고압 연료 분사 엔진인 것이 바람직하다.In the present embodiment, the main engine 2 is preferably a high pressure fuel injection engine such as a ME-GI engine manufactured and sold by MAN B & W Diesel.

압축 수단(4)은 LPG 연료 공급라인(L1)의 도중에 설치되어 LPG 공급 펌프(3)로부터 공급되는 LPG를 고압으로 압축하여 메인 엔진(2)으로 보낸다. LPG가 ME-GI 엔진의 연료로서 사용되기 위해서는 200 바(게이지압) 내지 450 바(게이지압), 바람직하게는, 400 바(게이지압)로 압축되어야 한다. 따라서, 본 실시예에서, 압축 수단(4)은 LPG를 200 바(게이지압) 내지 450 바(게이지압), 바람직하게는, 400 바(게이지압)로 압축시키는 부스터 펌프인 것이 바람직하다.The compression means 4 is installed in the middle of the LPG fuel supply line L1 to compress the LPG supplied from the LPG feed pump 3 to a high pressure and send it to the main engine 2. LPG must be compressed to 200 bar (gauge pressure) to 450 bar (gauge pressure), preferably 400 bar (gauge pressure) in order to be used as fuel in a ME-GI engine. Therefore, in this embodiment, the compression means 4 is preferably a booster pump that compresses the LPG from 200 bar (gauge pressure) to 450 bar (gauge pressure), preferably 400 bar (gauge pressure).

기화 수단(5)은 LPG 연료 공급라인(L1)의 도중에서 압축 수단(4)의 하류에 설치되어 압축 수단(4)에서 고압으로 압축된 LPG를 기화시킨다. 본 실시예에서, 기화 수단(5)은 고압 기화기인 것이 바람직하다.The vaporization means 5 is installed downstream of the compression means 4 in the middle of the LPG fuel supply line L1 to vaporize the LPG compressed at high pressure in the compression means 4. In this embodiment, the vaporization means 5 is preferably a high pressure vaporizer.

압축 수단(4)의 전단의 LPG 연료 공급라인(L1)에는 유량 조절 밸브(6)가 설치되어 있다. 유량 조절 밸브(6)는 메인 엔진(2)의 부하 변경을 고려하여 메인 엔진(2)에 연료로서 공급되는 LPG의 양을 조절한다.The flow rate control valve 6 is provided in the LPG fuel supply line L1 in front of the compression means 4. The flow regulating valve 6 adjusts the amount of LPG supplied as fuel to the main engine 2 in consideration of the load change of the main engine 2.

기화 수단(5)과 메인 엔진(2)의 사이의 LPG 연료 공급라인(L1)에는 어큐뮬레이터(7)가 설치되어 있다. 어큐뮬레이터(7)는 기화된 고압의 LPG 가스를 일정량으로 그리고 지속적으로 메인 엔진(2)에 공급하는 역할을 한다.The accumulator 7 is provided in the LPG fuel supply line L1 between the vaporization means 5 and the main engine 2. The accumulator 7 serves to supply the vaporized high pressure LPG gas to the main engine 2 in a constant amount and continuously.

연료용 증발가스 공급라인(L2)은 LPG 저장탱크(1)의 상부로부터 메인 엔진(2)의 전단의 LPG 연료 공급라인(L1)에 연결되어 있다. 본 실시예에서는 연료용 증발가스 공급라인(L2)이 메인 엔진(2)의 전단의 LPG 연료 공급라인(L1)에 연결된 것으로 예시하였지만, 연료용 증발가스 공급라인(L2)이 메인 엔진(2)에 직접 연결 될 수도 있다.The fuel boil-off gas supply line L2 is connected to the LPG fuel supply line L1 at the front end of the main engine 2 from the top of the LPG storage tank 1. In this embodiment, the fuel boil-off gas supply line L2 is illustrated as being connected to the LPG fuel supply line L1 at the front end of the main engine 2, but the fuel boil-off gas supply line L2 is the main engine 2. It can also be connected directly to

연료용 증발가스 공급라인(L2)의 도중에는 증발가스를 메인 엔진(2)의 요구 압력에 맞게 압축하는 고압 압축기(8)가 설치되어 있다.In the middle of the fuel boil-off gas supply line L2, the high pressure compressor 8 which compresses boil-off gas according to the required pressure of the main engine 2 is provided.

고압 압축기(8)의 전단의 연료용 증발가스 공급라인(L2)에서는 증발가스 재액화 라인(L3)이 분기되어 있으며, 이 증발가스 재액화 라인(L3)은 LPG 저장탱크(1)까지 연결되어 있다.The boil-off gas reliquefaction line L3 is branched from the fuel boil-off gas supply line L2 at the front end of the high-pressure compressor 8, and the boil-off gas reliquefaction line L3 is connected to the LPG storage tank 1. have.

증발가스 재액화 라인(L3)의 도중에는 증발가스 재액화 장치(9)가 설치되어 있다. 증발가스 재액화 장치(9)에 의해 재액화된 증발가스는 증발가스 재액화 라인(L3)을 통해 LPG 저장탱크(1)로 복귀된다. In the middle of the boil-off gas reliquefaction line L3, the boil-off gas reliquefaction apparatus 9 is provided. The boil-off gas re-liquefied by the boil-off gas reliquefaction apparatus 9 is returned to the LPG storage tank 1 through the boil-off gas reliquefaction line L3.

본 발명에 의하면, LPG 운반선에서 LPG 저장탱크 내에 저장된 LPG 또는 LPG 저장탱크에서 발생된 증발가스를 메인 엔진의 연료로서 사용하므로, 증발가스 재액화 장치를 설계함에 있어 용량을 대폭 감소시켜 설계하거나 증발가스 재액화 장치를 삭제할 수 있다.According to the present invention, since the LPG carriers use the boil-off gas generated in the LPG storage tank or the LPG storage tank as the fuel of the main engine, the capacity of the boil-off gas reliquefaction device is greatly reduced in designing the boil-off gas or the boil-off gas. You can delete the reliquefaction device.

LPG 운반선에서 증발가스 재액화 장치의 용량이 대폭 감소되거나 증발가스 재액화 장치를 삭제하게 되면, 운전 비용이 감소되고 또한 초기 시설 투자비가 절감된다. 특히, LPG 운반선에서 증발가스 재액화 장치의 용량이 대폭 감소되는 경우, 선박에서 증발가스 재액화 장치가 차지하는 공간이 대폭 감소되므로 증발가스 재액화 장치의 수리를 위한 공간을 충분히 확보할 수 있다.Significantly reduced capacity of the boil-off gas reliquefaction unit in LPG carriers or the elimination of boil-off gas reliquefaction units reduces operating costs and lowers initial plant investment. In particular, when the capacity of the boil-off gas reliquefaction apparatus is greatly reduced in the LPG carrier, the space occupied by the boil-off gas reliquefaction apparatus in the ship is greatly reduced, it is possible to secure enough space for repair of the boil-off gas reliquefaction apparatus.

또한, LPG 운반선에서 LPG 저장탱크 내에 저장된 LPG 또는 LPG 저장탱크에서 발생된 증발가스를 메인 엔진의 연료로서 사용하면, 환경 오염을 일으키는 배기가 스의 방출이 중유 연료 사용에 비해 감소될 뿐만 아니라 황 성분이 적은 중유 연료 탱크(LSHFO tank)를 별도로 설치하지 않아도 되는 이점이 있다.In addition, when LPG carriers use LPG stored in LPG storage tanks or evaporated gas generated in the LPG storage tanks as fuel for the main engine, the emission of exhaust gas causing environmental pollution is reduced as well as the sulfur content. This has the advantage of not having to install a small fuel oil tank (LSHFO tank) separately.

이상에서는 본 발명이 특정 실시예를 중심으로 하여 설명되었지만, 본 발명의 취지 및 첨부된 특허청구범위 내에서 다양한 변형, 변경 또는 수정이 당해 기술분야에서 있을 수 있으며, 따라서, 전술한 설명 및 도면은 본 발명의 기술사상을 한정하는 것이 아닌 본 발명을 예시하는 것으로 해석되어져야 한다.While the invention has been described above with reference to specific embodiments, various modifications, changes or modifications may be made in the art within the spirit and scope of the appended claims, and thus, the foregoing description and drawings It should be construed as illustrating the present invention rather than limiting the technical spirit of the present invention.

도 1은 본 발명의 실시예에 따른 LPG 운반선의 연료 공급 시스템의 개략도이다.1 is a schematic diagram of a fuel supply system of an LPG carrier according to an embodiment of the present invention.

Claims (12)

LPG를 LPG 저장탱크에 저장하여 수송하는 LPG 운반선의 메인 엔진에 연료를 공급하는 시스템으로서,A system for supplying fuel to a main engine of an LPG carrier that stores and transports LPG in an LPG storage tank. 상기 LPG 저장탱크의 하부로부터 LPG를 빼내어서 고압으로 압축한 후 기화시켜 상기 메인 엔진으로 공급하는 LPG 연료 공급라인과,LPG fuel supply line for extracting the LPG from the lower portion of the LPG storage tank and compressing to high pressure and then vaporizing and supplying the LPG to the main engine; 상기 LPG 저장탱크의 상부로부터 증발가스를 빼내어서 고압으로 압축한 후 상기 메인 엔진으로 공급하는 연료용 증발가스 공급라인을 포함하는 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.And a boil-off gas supply line for extracting the boil-off gas from the upper portion of the LPG storage tank, compressing it to high pressure, and supplying the boil-off gas to the main engine. 청구항 1에 있어서,The method according to claim 1, 상기 LPG 연료 공급라인은 상기 LPG 저장탱크로부터 상기 메인 엔진까지 연결되어 있고,The LPG fuel supply line is connected to the main engine from the LPG storage tank, 상기 LPG 저장탱크의 하부에는 상기 LPG 저장탱크 내의 LPG를 상기 LPG 연료 공급라인으로 공급하는 LPG 공급 펌프가 설치되고,An LPG supply pump is installed below the LPG storage tank to supply LPG in the LPG storage tank to the LPG fuel supply line. 상기 LPG 연료 공급라인의 도중에는, 상기 LPG 공급 펌프로부터 공급되는 LPG를 고압으로 압축하여 상기 메인 엔진으로 보내는 압축 수단과, 상기 압축 수단의 하류에 설치되어 상기 압축 수단에서 고압으로 압축된 LPG를 기화시키는 기화 수단이 차례로 설치된 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.In the middle of the LPG fuel supply line, a compression means for compressing the LPG supplied from the LPG supply pump to a high pressure to the main engine, and vaporized LPG installed downstream of the compression means to vaporize the high pressure in the compression means A fuel supply system for an LPG carrier, characterized in that vaporization means are installed in sequence. 청구항 2에 있어서,The method according to claim 2, 상기 메인 엔진은 고압 연료 분사 엔진이고,The main engine is a high pressure fuel injection engine, 상기 압축 수단은 LPG를 200 바(게이지압) 내지 450 바(게이지압)로 압축시키는 부스터 펌프인 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.The compression means is a fuel supply system of the LPG carrier, characterized in that the booster pump for compressing the LPG from 200 bar (gauge pressure) to 450 bar (gauge pressure). 청구항 3에 있어서,The method according to claim 3, 상기 기화 수단은 고압 기화기인 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.And the vaporization means is a high pressure vaporizer. 청구항 2에 있어서,The method according to claim 2, 상기 압축 수단의 전단의 상기 LPG 연료 공급라인에는 유량 조절 밸브가 설치된 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.LPG fuel supply system of the LPG carrier, characterized in that the flow rate control valve is installed in the LPG fuel supply line in front of the compression means. 청구항 2에 있어서,The method according to claim 2, 상기 기화 수단과 상기 메인 엔진의 사이의 상기 LPG 연료 공급라인에는 어큐뮬레이터가 설치된 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.And an accumulator is installed in the LPG fuel supply line between the vaporization means and the main engine. 청구항 1에 있어서,The method according to claim 1, 상기 연료용 증발가스 공급라인은 상기 LPG 저장탱크의 상부로부터 상기 메인 엔진의 전단의 상기 LPG 연료 공급라인에 연결된 것을 특징으로 하는 LPG 운반 선의 연료 공급 시스템.The fuel boil-off gas supply line is connected to the LPG fuel supply line of the front end of the main engine from the top of the LPG storage tank fuel supply system of the LPG carrier. 청구항 1에 있어서,The method according to claim 1, 상기 연료용 증발가스 공급라인의 도중에는 고압 압축기가 설치된 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.The fuel supply system of the LPG carrier, characterized in that the high pressure compressor is installed in the middle of the fuel boil-off gas supply line. 청구항 8에 있어서,The method according to claim 8, 상기 고압 압축기의 전단의 상기 연료용 증발가스 공급라인에서 분기되어 상기 LPG 저장탱크까지 연결된 증발가스 재액화 라인을 더 포함하고,Further comprising a boil-off gas reliquefaction line branched from the fuel boil-off gas supply line in front of the high-pressure compressor and connected to the LPG storage tank, 상기 증발가스 재액화 라인의 도중에는 증발가스 재액화 장치가 설치된 것을 특징으로 하는 LPG 운반선의 연료 공급 시스템.The fuel supply system of the LPG carrier, characterized in that the boil-off gas reliquefaction device is installed in the middle of the boil-off gas reliquefaction line. LPG를 LPG 저장탱크에 저장하여 수송하는 LPG 운반선의 메인 엔진에 연료를 공급하는 방법으로서,A method of supplying fuel to a main engine of an LPG carrier that stores and transports LPG in an LPG storage tank, 상기 LPG 운반선의 LPG 저장탱크의 하부로부터 LPG를 빼내어서 상기 메인 엔진의 요구 압력에 맞게 압축하고 기화시켜서 상기 메인 엔진으로 공급하고, 상기 LPG 저장탱크의 상부로부터 증발가스를 빼내어서 상기 메인 엔진의 요구 압력에 맞게 압축한 후 상기 메인 엔진으로 공급하는 것을 특징으로 하는 LPG 운반선의 연료 공급 방법.The LPG is extracted from the lower portion of the LPG storage tank of the LPG carrier, compressed and vaporized according to the required pressure of the main engine, and supplied to the main engine, and the boil-off gas is extracted from the upper portion of the LPG storage tank to request the main engine. The fuel supply method of the LPG carrier characterized in that the compressed to the pressure and supplied to the main engine. 청구항 10에 있어서,The method according to claim 10, 상기 메인 엔진은 고압 연료 분사 엔진인 것을 특징으로 하는 LPG 운반선의 연료 공급 방법.The main engine is a fuel supply method of the LPG carrier, characterized in that the high pressure fuel injection engine. 청구항 11에 있어서,The method according to claim 11, 상기 LPG 저장탱크의 상부에서 발생된 증발가스의 일부를 증발가스 재액화 장치에 의해 재액화시켜서 상기 LPG 저장탱크로 복귀시키는 것을 특징으로 하는 LPG 운반선의 연료 공급 방법.And a part of the boil-off gas generated at the upper portion of the LPG storage tank is re-liquefied by the boil-off gas reliquefaction apparatus to return to the LPG storage tank.
KR1020080058023A 2008-06-19 2008-06-19 System and method for supplying fuel in lpg carrier KR20090131988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080058023A KR20090131988A (en) 2008-06-19 2008-06-19 System and method for supplying fuel in lpg carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080058023A KR20090131988A (en) 2008-06-19 2008-06-19 System and method for supplying fuel in lpg carrier

Publications (1)

Publication Number Publication Date
KR20090131988A true KR20090131988A (en) 2009-12-30

Family

ID=41691100

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080058023A KR20090131988A (en) 2008-06-19 2008-06-19 System and method for supplying fuel in lpg carrier

Country Status (1)

Country Link
KR (1) KR20090131988A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777286A (en) * 2012-08-03 2012-11-14 中国海洋石油总公司 Automobile liquefied natural gas vaporizer supplied with fuel through hydraulic driving pump
KR101350808B1 (en) * 2012-10-24 2014-01-16 대우조선해양 주식회사 Hybrid fuel supply system and method for ship engines
RU2546050C1 (en) * 2014-02-26 2015-04-10 Аллтек Инвестментс Лимитед Feed of fuel gas to compressed natural gas tanker power plants

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777286A (en) * 2012-08-03 2012-11-14 中国海洋石油总公司 Automobile liquefied natural gas vaporizer supplied with fuel through hydraulic driving pump
KR101350808B1 (en) * 2012-10-24 2014-01-16 대우조선해양 주식회사 Hybrid fuel supply system and method for ship engines
RU2546050C1 (en) * 2014-02-26 2015-04-10 Аллтек Инвестментс Лимитед Feed of fuel gas to compressed natural gas tanker power plants
WO2015130193A1 (en) * 2014-02-26 2015-09-03 Bosov Boris Petrovich The way of gas fuel supply to power installations of liquefied natural gas carriers

Similar Documents

Publication Publication Date Title
KR100850833B1 (en) System and method for supplying fuel gas of lng carrier
KR101049229B1 (en) Fuel gas supply apparatus and method of LKN carrier
KR100805022B1 (en) Lng cargo tank of lng carrier and method for treating boil-off gas using the same
KR101707500B1 (en) System And Method For BOG Management
KR101577795B1 (en) Fuel gas supplying system for supplying fuel gas to a liquified fuel gas propulsion ship with high-pressure gas injection engine and low-pressure gas injection engine
KR101559316B1 (en) fuel gas supplying system
KR20150101619A (en) System for supplying fuel gas in ships
KR20090131988A (en) System and method for supplying fuel in lpg carrier
KR101623098B1 (en) Fuel Supply System And Method For Ship Or Offshore Platform
KR20090131989A (en) System and method for supplying fuel in lpg carrier
CN106029490B (en) System and method for handling boil-off gas
KR101403611B1 (en) Lng fsru having a regasification apparatus
KR20150076824A (en) System for supplying fuel gas in ships
KR20110046945A (en) Fuel gas supplying system for supplying fuel gas to a liquified fuel gas propulsion ship with a high-pressure gas injection engine and a low-pressure gas injection engine
KR20120051481A (en) Lng supply system for dual fuel engine and method thereof
KR100834272B1 (en) Lng cargo tank, lng carrier with it, and lng carrying method
KR101491717B1 (en) Marine structure with an lng storage tank and method for operating the lng storage tank in the marine structure
KR101499902B1 (en) Marine structure with a regasification apparatus and method for operating an lng storage tank in the marine structure
KR20070045172A (en) Gas management method
KR101561073B1 (en) Apparatus for supplying pilot fuel and gas engine system with the same
KR101210921B1 (en) Boil-off gas handling apparatus and method
KR100976599B1 (en) Fuel gas supply system of lng carrier
KR101369485B1 (en) Method for opening/closing a safety valve
KR101403610B1 (en) Lng rv having a regasification apparatus
KR20150055217A (en) fuel supply system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application