Raw material gas liquefying device and method of controlling this raw material gas liquefying device

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United States of America Patent

PATENT NO 11808502
SERIAL NO

16465430

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Abstract

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A raw material gas liquefying device includes a feed line which feeds a raw material gas, a refrigerant circulation line which circulates a refrigerant, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit, a heat exchanger which exchanges heat between the raw material gas and the refrigerant, a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen, and a controller which manipulates the opening rate of the expansion unit entrance value and performs a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, at start-up and stop of the expansion unit.

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Patent Owner(s)

Patent OwnerAddress
KAWASAKI JUKOGYO KABUSHIKI KAISHA1-1 HIGASHIKAWASAKI-CHO 3-CHOME CHUO-KU KOBE-SHI HYOGO 650-8670

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kariya, Daisuke Kobe, JP 7 20
Kimura, Yosuke Kakogawa, JP 76 2849
Miwa, Yasuo Kobe, JP 6 44
Miyazaki, Hidetaka Kobe, JP 10 92
Saito, Yuichi Akashi, JP 162 1943
Sakamoto, Tomohiro Akashi, JP 17 82
Yamazoe, Naotaka Akashi, JP 2 3

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