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1. (WO2018105565) RAW MATERIAL GAS LIQUEFACTION DEVICE AND CONTROL METHOD FOR SAME

Pub. No.:    WO/2018/105565    International Application No.:    PCT/JP2017/043510
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: F25J 1/02
F01D 17/00
F01D 17/06
F01D 17/10
F01K 17/04
F01K 25/10
F25B 9/06
F25J 1/00
Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA
川崎重工業株式会社
Inventors: YAMAZOE, Naotaka
山添 直隆
SAKAMOTO, Tomohiro
阪本 智浩
MIYAZAKI, Hidetaka
宮崎 英隆
KARIYA, Daisuke
仮屋 大祐
MIWA, Yasuo
三輪 靖雄
SAITOU, Yuichi
齋藤 雄一
KIMURA, Yosuke
木村 洋介
Title: RAW MATERIAL GAS LIQUEFACTION DEVICE AND CONTROL METHOD FOR SAME
Abstract:
A raw material gas liquefaction device comprises: a feed line that supplies a raw material gas; a refrigerant circulation line that circulates refrigerant and that has a turbine expander to generate cold heat by expanding the refrigerant in order to cool the raw material gas and an expander inlet valve provided on the inlet side of the expander; a heat exchanger by which heat exchange is performed between the raw material gas and the refrigerant; a cooler that performs the initial cooling of the raw material gas and refrigerant by way of heat exchange with liquid nitrogen; and a control device that performs feedback control so that the rotational speed of the expander matches a prescribed target value by manipulating the expander inlet valve opening while starting and stopping the expander.