KR102066632B1 - 선박용 증발가스 재액화 시스템 및 방법 - Google Patents
선박용 증발가스 재액화 시스템 및 방법 Download PDFInfo
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- KR102066632B1 KR102066632B1 KR1020170037834A KR20170037834A KR102066632B1 KR 102066632 B1 KR102066632 B1 KR 102066632B1 KR 1020170037834 A KR1020170037834 A KR 1020170037834A KR 20170037834 A KR20170037834 A KR 20170037834A KR 102066632 B1 KR102066632 B1 KR 102066632B1
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- 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
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- 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
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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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
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- F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
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- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
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- F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
- F25J1/023—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the combustion as fuels, i.e. integration with the fuel gas system
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- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
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- 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
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Abstract
상기 선박용 증발가스 재액화 시스템은, 증발가스의 일부를 압축시키는 제2 압축기; 상기 제2 압축기로 보내지지 않은 나머지 증발가스를 냉매로 상기 제2 압축기에 의해 압축된 증발가스를 열교환시켜 냉각시키는 열교환기; 상기 열교환기에서 냉매로 사용된 증발가스를 압축시키는 제1 압축기; 및 상기 열교환기에 의해 냉각된 유체를 팽창시키는 감압장치;를 포함한다.
Description
도 2는 본 발명의 바람직한 실시예에 따른 선박용 증발가스 재액화 시스템의 개략도이다.
100 : 열교환기 210, 220 : 압축기
300 : 감압장치 400 : 기액분리기
Claims (10)
- 급유 윤활 방식의 압축기이며, 가스 소비처에서 요구하는 압력으로 증발가스를 압축시키는 제1 압축기;
무급유 윤활 방식의 압축기이며, 재액화시킬 증발가스를 압축시키는 제2 압축기;
상기 제2 압축기에서 압축된 증발가스를, 상기 제1 압축기로 공급되는 압축 전 증발가스의 냉열로 냉각시키는 열교환기; 및
상기 열교환기에 의해 냉각된 유체를 팽창시키는 감압장치;를 포함하며,
상기 증발가스는 저장탱크로부터 배출되어 상기 제1 압축기 및 제2 압축기로 각각 분기되어 공급되고,
상기 급유 윤활 방식의 제1 압축기에서 압축된 증발가스는 가스 소비처로 공급되고, 상기 무급유 윤활 방식의 제2 압축기에서 압축된 증발가스는 상기 열교환기 및 감압장치를 통과하면서 재액화되어 상기 저장탱크로 회수되고,
상기 제1 압축기에서 압축되어 가스 소비처로 공급되는 증발가스의 압력은, 상기 제2 압축기에서 압축되어 열교환기로 공급되는 증발가스의 압력보다 낮은 저압이며,
상기 제2 압축기에서 압축되어 열교환기로 공급되는 증발가스의 압력은, 상기 제1 압축기에서 압축되어 가스 소비처로 공급되는 증발가스의 압력보다 높은 고압인, 선박용 증발가스 재액화 시스템. - 청구항 1에 있어서,
상기 감압장치 후단에 설치되어 재액화된 액화천연가스와 기체상태의 증발가스를 분리하는 기액분리기를 더 포함하는, 선박용 증발가스 재액화 시스템. - 청구항 2에 있어서,
상기 기액분리기에 의해 분리된 기체상태의 증발가스는 상기 열교환기로 보내지는 증발가스와 합류되어 상기 열교환기의 냉매로 사용되는, 선박용 증발가스 재액화 시스템. - 삭제
- 삭제
- 청구항 1 내지 청구항 3 중 어느 한 항에 있어서,
상기 제2 압축기는 4단으로 증발가스를 압축시키는 다단압축기인, 선박용 증발가스 재액화 시스템. - 청구항 1 내지 청구항 3 중 어느 한 항에 있어서,
상기 제2 압축기는 증발가스를 150 bar로 압축시키는, 선박용 증발가스 재액화 시스템. - 삭제
- 청구항 1 내지 3 중 어느 한 항에 있어서,
상기 가스소비처는, ME-GI 엔진, X-DF 엔진, DF 엔진, 및 가스연소장치 중 하나 이상인, 선박용 증발가스 재액화 시스템. - 저장탱크로부터 배출된 증발가스를 가스 소비처로 공급할 증발가스 흐름과 재액화시킬 증발가스 흐름으로 분기시켜,
상기 가스 소비처로 공급할 증발가스를 급유 윤활 방식의 압축기를 이용하여 가스 소비처에서 요구하는 압력으로 압축시키고,
상기 재액화시킬 증발가스는 무급유 윤활 방식의 압축기를 이용하여 압축시킨 후, 상기 가스 소비처로 공급할 증발가스를 압축시키기 전에 상기 가스 소비처로 공급할 증발가스의 냉열을 회수하여 상기 재액화시킬 압축 증발가스를 냉각시키고, 상기 냉각된 압축 증발가스는 팽창시켜 재액화시키며,
상기 급유 윤활 방식의 압축기에 의해 압축된 증발가스는 상기 가스 소비처로 공급하고, 상기 무급유 윤활 방식의 압축기를 이용하여 압축시킨 증발가스는 재액화시켜 상기 저장탱크로 회수하고,
상기 가스 소비처로 공급하기 위하여 압축시키는 증발가스의 압력은, 상기 재액화시키기 위하여 압축시키는 증발가스의 압력보다 낮은 저압이며,
상기 재액화시키기 위하여 압축시키는 증발가스의 압력은, 상기 가스 소비처로 공급하기 위하여 압축시키는 증발가스의 압력보다 높은 고압인, 선박용 증발가스 재액화 방법.
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