Process for cryogenically separating natural gas streams

Details Process for cryogenically separating natural gas streams Process for cryogenically separating natural gas streams

1988-03-10

1989-02-21

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 31, 62 39, 62 42, F25J 302

Patent

active

048054135

ABSTRACT:
The present invention relates to an improved process for the recovery, individually, of natural gas liquids methane and nitrogen from a gaseous feed stream such as natural gas without the need for auxiliary refrigeration and without or with only minimal need for supplemental compressor or pumping equipment. The gaseous feed stream is separated in multiple steps utilizing process-derived streams and minimal pressure reductions to achieve and provide the refrigeration requirements necessary to effect the separation.

REFERENCES:
patent: 4203741 (1980-05-01), Bellinger et al.
patent: 4256476 (1981-03-01), Van Baush
patent: 4504295 (1985-03-01), Davis et al.
patent: 4711651 (1987-12-01), Sharma
"Integrated Nitrogen Rejection Facility Produces Fuel and Recovers NGL's", Energy Progress, vol. 4, No. 4, Dec. 1984, pp. 214-221, by S. K. Looney, B. C. Price and C. A. Wilson, Arco Oil.
Chemical Engineers' Handbook, John H. Perry, Section 12, pp. 29-30, 4th Ed. (1963).

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