Process and apparatus for separating hydrocarbon gas into a resi

Details Process and apparatus for separating hydrocarbon gas into a resi Process and apparatus for separating hydrocarbon gas into a resi

1984-05-14

1986-09-02

Bashore, S. Leon

Refrigeration

Processes

Circulating external gas

62 23, 62 37, 62 39, 62 43, F25J 306

Patent

active

046093907

ABSTRACT:
A process and apparatus for separating a hydrocarbon feed gas into residue gas and a less volatile product fraction utilizing phase separation resulting from cooling. The present invention utilizes a portion of the liquid product fraction as internal refrigerant by expansion-cooling of the fraction which is then recycled after heat exchange to the inlet feed gas. No external refrigeration system is required. Flow of the portion of the liquid product fraction used as internal refrigerant is controlled with a Joule-Thompson valve responsive to the temperature of the residue gas and product fraction as they are separated so as to regulate expansion-cooling to provide a desired composition of the residue gas and the product fraction.

REFERENCES:
patent: 2315424 (1941-07-01), Hill et al.
patent: 4128409 (1978-12-01), Bennett
patent: 4141707 (1979-02-01), Springmann
patent: 4410342 (1983-10-01), Horton

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