Process to separate nitrogen from natural gas

Details Process to separate nitrogen from natural gas Process to separate nitrogen from natural gas

1982-03-26

1983-11-15

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 30, 62 31, 62 34, 62 39, F25J 302

Patent

active

044153457

ABSTRACT:
A process to separate by rectification low concentration nitrogen from natural gases having a gradually increasing nitrogen concentration which employs a nitrogen heat pump cycle to generate necessary liquid reflux for a fractionation column and is compatible with both single column and double column process arrangements.

REFERENCES:
patent: 2583090 (1952-01-01), Cost
patent: 2696088 (1954-12-01), Twomey
patent: 2716332 (1955-08-01), Haynes
patent: 3269131 (1966-08-01), Becker
patent: 3721099 (1973-03-01), Forg et al.
patent: 4230469 (1980-10-01), Grimm et al.
Jones, "Upgrade Low-Btu Gas," Hydrocarbon Processing, Sep. 1973, pp. 193-195.

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