The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2022
Filed:
Dec. 27, 2018
Sung-il Encare Co., Ltd., Busan, KR;
Kogas-tech, Daejeon, KR;
Korea Institute of Industrial Technology, Cheonan-si, KR;
Jang-ik Park, Busan, KR;
Ta Kwan Woo, Busan, KR;
Taehee Kang, Busan, KR;
Heeseung Na, Daejeon, KR;
Hweeung Kwon, Sejong-si, KR;
Gaehyun Nam, Hwaseong-si, KR;
Young Cheol Lee, Busan, KR;
Dong-Ha Lim, Busan, KR;
SUNG-IL ENCARE Co., Ltd., Busan, KR;
KOGAS-TECH, Dajeon, KR;
Korea Institute of Industrial Technology, Cheonan-si, KR;
Abstract
Provided are an apparatus and method for liquefying natural gas. The apparatus for liquefying natural gas includes a gas compressor configured to receive and compress the natural gas from a natural gas feed stream, a heat exchanging unit configured to cool a high-pressure natural gas passing through the gas compressor through heat exchange, an expansion valve configured to expand the cooled natural gas passing through the heat exchanging unit, a hold-up drum configured to phase-separate a gas-liquid mixture produced by passing through the expansion valve and divide the gas-liquid mixture into a liquefied natural gas and a cryogenic recycle gas having nitrogen content greater than that of the liquefied natural gas so as to discharge the liquefied natural gas and the cryogenic recycle gas, and a bypass line configured to provide the recycle gas discharged from the hold-up drum to the heat exchanging unit.