Title: Liquefaction of gas

Abstract: A process for liquefying a natural gas, having a pressure above atmospheric pressure, in which a feed gas is cooled to sequentially lower temperatures, by passing the gas through a plurality of cooling stages, in indirect heat exchange with at least one refrigerant, until the gas is substantially completely condensed in the last of the cooling stages, a fuel gas fraction is withdrawn from the liquefied gas in an amount proportional to the amount of feed gas passing through the cooling stages and, thereafter, the pressure of the remaining liquefied gas is reduced to essentially atmospheric pressure. Apparatus for carrying out the process is also described.

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Inventors: Bailey, Dunn M. (Bartlesville, OK, US)

Application Number: 905504
Filing Date: 1978-05-12
Publication_date: 1979-10-30
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 62/619 62/657
Other Classes:
US Patent Ref:

2960837	Nov, 1960	Swenson et al.	62/40.
3020723	Feb, 1962	De Lury et al.	62/40.
3254495	Jun, 1966	Jackson et al.	62/40.
3290890	Dec, 1966	Bray et al.	62/23.
3292382	Dec, 1966	Bray et al.	62/23.
3413817	Dec, 1968	Kniel	62/26.
3874184	Apr, 1975	Harper et al.	62/23.

Other Refs:
Primary Examiner: Yudkoff, Norman
Assistant Examiner:
Attorney: