Process for liquefying methane

Details Process for liquefying methane Process for liquefying methane

1982-08-30

1984-05-01

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 38, 62 40, F25J 302

Patent

active

044459165

ABSTRACT:
A process for liquefying natural gas in which heavier hydrocarbons are separated in a scrub column from the natural gas prior to liquefaction. The feed to the scrub column is intercooled against the methane-rich overhead from said column and isentropically expanded before being introduced to the column and separated from the heavier hydrocarbons. The methane-rich overhead stream is compressed utilizing the mechanical energy of expansion and liquefied in a refrigerated heat exchanger.

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patent: 4004430 (1977-01-01), Solomon et al.
patent: 4061481 (1977-12-01), Campbell et al.
patent: 4065278 (1977-12-01), Newton et al.
patent: 4203741 (1980-05-01), Bellinger et al.
R. D. Parker, "Cryogenic Processing . . . Mobil", Mar. 1972, Technology, Natural Gas Processors Assn.
J. G. Gulsby, Mar. 1979, "Options for Ethane Rejection in the Cryogenic Expander Plant," 58 Annual GPA Convention.

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