Title:
独立な二元エクスパンダー冷凍サイクルを使用するＬＮＧの製造
Document Type and Number:
Japanese Patent JP5960945
Kind Code:
B2
Abstract:
A process for producing a liquefied natural gas stream from an inlet gas feed stream, the process comprising the steps of:
cooling at least a portion of the inlet gas feed stream by heat exchange contact with a first gas-phase refrigerant in a methane refrigeration cycle operated independently of a second gas-phase refrigerant in a nitrogen refrigeration cycle;
the methane refrigeration cycle comprising the steps of:
expanding a first gas-phase refrigerant comprising methane to form a cold methane vapour steam;
cooling at least a portion of the inlet feed gas stream by heat exchange contact with the cold refrigerant vapour stream;
compressing the cold methane vapour stream to form a compressed methane vapour stream; and
cooling at least a portion of the compressed methane vapour stream by heat exchange contact with the cold methane vapour stream; and
the nitrogen refrigeration cycle comprising the steps of:
expanding a second gas-phase refrigerant comprising nitrogen to a cold nitrogen vapour stream;
cooling at least a portion of the inlet feed gas stream by heat exchange contact with the cold nitrogen vapour stream simultaneously as cooling at least a portion of the inlet feed gas stream by heat exchange contact with the cold methane vapour stream;
compressing the cold nitrogen vapour stream to form a compressed nitrogen vapour stream; and
cooling at least a portion of the compressed nitrogen vapour stream by heat exchange contact with the cold nitrogen vapour stream;
whereby a liquefied natural gas stream is produced.
Inventors:
Foglietta, jorge, h
Application Number:
JP2010171738A
Publication Date:
August 02, 2016
Filing Date:
July 30, 2010
Export Citation:
Assignee:
Lamas Technology, Inc.
International Classes:
F25B1/00; F25J1/00; C10L3/06; F25J1/02
Domestic Patent References:
| JP2001165562A |
Foreign References:
| DE2440215A |
Other References:
FINN A J,”Developments in Natural Gas Liquefaction”,HYDROCARBON PROCESSING,米国,GULF PUBLISHING CO.,1999年 4月,Vol.78,No.4,P.47-50,53-56,58-59,XP000825425,ISSN:0018-8190
Attorney, Agent or Firm:
Asamura patent office
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