BOG WARMING SYSTEM FOR LOW-TEMPERATURE LIQUEFIED GAS

• Main Authors: HAYASHI SHOICHIRO, SATO TERUO, SHIMADA HIROSHI, KOBAYASHI KOJI, YAMANE YUYA, TAKADA DAICHI, IWATSURU KANAME
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• Subjects: BLASTING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; STORING OF DISTRIBUTING GASES OR LIQUIDS; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

PROBLEM TO BE SOLVED: To provide a BOG warming system for low-temperature liquefied gas that can realize energy-saving operation by enhancing thermal efficiency of the BOG warming system.SOLUTION: A BOG warming system (1) that warms BOG of LNG comprises: first and second BOG warmers (2A and 2B) that receive and warm BOG generated in an LNG tank; first and second BOG compressors (3A and 3B) that receive and compress BOG warmed in the first and second BOG warmers (2A and 2B); a warmed cooling water supply system (7) that supplies warmed cooling water warmed by compression heat generated in the first and second BOG compressors (3A and 3B) to the first BOG warmer (2A); and a warm water supply system (9) that supplies warm water generated in a boiler (5) to the second BOG warmer (2B).SELECTED DRAWING: Figure 1 【課題】ＢＯＧ加温システムの熱効率を高めて省エネルギー運転を実現できる低温液化ガス用ＢＯＧ加温システムを提供することにある。【解決手段】ＬＮＧのＢＯＧを加温するＢＯＧ加温システム(1)は、ＬＮＧタンクで発生したＢＯＧを受けて加温する第１，第２のＢＯＧ加温器(2A,2B)と、第１，第２のＢＯＧ加温器(2A,2B)で加温されたＢＯＧを受けて圧縮する第１，第２のＢＯＧ圧縮機(3A,3B)と、第１，第２のＢＯＧ圧縮機(3A,3B)で発生する圧縮熱で加温された加温冷却水を前記第１のＢＯＧ加温器(2A)に供給する加温冷却水供給系統(7)と、ボイラー(5)で発生した温水を第２のＢＯＧ加温器(2B)に供給する温水供給系統(9) とを備えている。【選択図】図１