LNG tank and method of treating boil-off gas

(19)

(11)

EP 1 956 287 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	09.12.2015 Bulletin 2015/50

(43)	Date of publication A2:
	13.08.2008 Bulletin 2008/33

(21)	Application number: 07007423.2

(22)	Date of filing: 11.04.2007

(51)

International Patent Classification (IPC):

F17C 13/00^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(30)

Priority:

12.02.2007 KR 20070014405

(71)	Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD
	Seoul 100-180 (KR)

(72)	Inventors:
	Choi, Jung Ho Geoje-si 656-220 Gyeongsangnam-do (KR) Han, Sung Kon Geoje-si 656-777 Gyeongsangnam-do (KR) Choi, Dong Kyu Geoje-si 656-757 Gyeongsangnam-do (KR) Lee, Jung Han Gyeongsangnam-do 656-714 (KR)

(74)	Representative: Bosch, Matthias et al
	Bosch Jehle Patentanwaltsgesellschaft mbH Flüggenstrasse 13 80639 München 80639 München (DE)

(54)	LNG tank and method of treating boil-off gas

(57) An LNG storage tank and a method of treating boil-off gas using the same are disclosed. The LNG storage tank and the method of treating boil-off gas enable the pressure of the LNG storage tank to be maintained in a stable state without consuming boil-off gas generated in the LNG tank as propulsion fuel or without re-liquefying the boil-off gas. The storage tank comprises a thermal insulation wall, and has strengthened structure to permit a pressure increase resulting from heat influx to the LNG tank and boil-off gas generation. The method comprises permitting a pressure increase by the boil-off gas generation and LNG cargo temperature increase in the storage tank without treating the generated boil-off gas in the storage tank, so that the boil-off gas is accumulated without extracting or loss in the storage tank.

Search report

Search report