Title:
LIQUEFACTION METHOD COMPRISING AT LEAST A COOLANT MIXTURE USING BOTH ETHANE AND ETHYLENE
Document Type and Number:
WIPO Patent Application WO2003023303
Kind Code:
B1
Abstract:
The invention concerns a method comprising: (a) a first step whereby natural gas (1) is subjected to a first refrigerating cycle to obtain cooled natural gas (4), and brought to a temperature less than 20 DEG C by a first coolant (201); a second step whereby the cooled natural gas (4) is subjected to a second refrigerating cycle wherein the cooled natural gas (4) is cooled and condensed by a second coolant (103) comprising methane, ethane, propane, and nitrogen. The second coolant (103) further contains ethylene, the total ethane and ethylene content being close to 50 mole %.
Inventors:
PARADOWSKI HENRI (FR)
Application Number:
PCT/FR2002/002951
Publication Date:
October 02, 2003
Filing Date:
August 28, 2002
Export Citation:
Assignee:
TECHNIP COFLEXIP (FR)
PARADOWSKI HENRI (FR)
PARADOWSKI HENRI (FR)
International Classes:
F25J1/02; (IPC1-7): F25J1/02
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