BOPI 09 BR/2023 REPERTOIRE NUMERIQUE 13 Dans le cas de l'option parallèle au trait de côte, la technique peut se réaliser indéfiniment en s'avançant dans la mer pour regagner ainsi à la mer toute la partie de terre précédemment engloutie. Fig. 16 Consulter le mémoire ________________________________________ (11) 21136 (51) C10L 3/10 (2018.01); F25J 1/00 (2018.01) ; F25J 3/02 (2018.01) (21) 1202200084 - PCT/JP2020/008460 (22) 28/02/2020 (54) Start up method for LNG production equipment, and LNG production equipment. (72) NAKAYAMA, Toru (JP); FURUBAYASHI, Yugo (JP) et MATSUBARA, Toru (JP) (73) JGC CORPORATION, 2-3-1, Minato Mirai, Nishi-ku, Yokohama-shi, KANAGAWA 2206001 (JP) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS SARL, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, B.P. 8211, YAOUNDE (CM). (57) [Problem] To provide, with regard to LNG production facility comprising an external coolant system, an LNG production facility start up method and LNG production facility which enable starting up without ethane. [Solution] The present invention includes: a coolant system start up step for circulating ethane-free coolant in an external coolant system; a raw material gas pretreatment step for supplying to LNG production facility natural gas which is a raw material; a cooling step for cooling the natural gas supplied from the raw material gas pretreatment step to a prescribed temperature using the coolant, to liquefy and separate the heavy component; a heavy component separation step for separating the heavy component from the natural gas cooled in the cooling step; a coolant production step for producing, from the heavy component separated from the natural gas in the heavy component separation step, a coolant component which includes ethane; and a coolant supply step for supplying to the external coolant system the coolant component which contains ethane and which was produced in the coolant production step.
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