Nitrogen rejection from natural gas integrated with NGL recovery

Details Nitrogen rejection from natural gas integrated with NGL recovery Nitrogen rejection from natural gas integrated with NGL recovery

1983-06-01

1985-03-12

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 31, 62 33, 62 34, 62 39, 62 40, F25J 302

Patent

active

045042950

ABSTRACT:
A process is set forth for the recovery of methane, nitrogen and natural gas liquids (C.sub.2+) from a natural gas feed stream wherein the recovery can be made at high pressure by the integration of a nitrogen rejection stage including a heat pump driven distillation column and a natural gas liquids stage. Nitrogen can be rejected over a wide range of nitrogen concentration (approximately 1 to about 80%) of the feed stream.

REFERENCES:
patent: 3656312 (1972-04-01), Streich
patent: 3797261 (1974-03-01), Juncker et al.
patent: 4158556 (1979-06-01), Yearout
patent: 4323380 (1982-04-01), Muller et al.
patent: 4411677 (1983-10-01), Pervier et al.
Linde Reports on Science and Technology, 15, 1970.

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