Carbon dioxide hydrocarbons separation process

Details Carbon dioxide hydrocarbons separation process Carbon dioxide hydrocarbons separation process

1984-08-20

1986-03-18

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 48, 55 51, 55 68, 55 73, B01D 5314

Patent

active

045766150

ABSTRACT:
Carbon dioxide is separated from light hydrocarbons such as methane and ethane by absorbing CO.sub.2 gas with water at a pressure of at least 500 psia thus avoiding the CO.sub.2 --C.sub.2 H.sub.6 azeotrope problem. The CO.sub.2 is recovered from the absorbing water by pressure reduction and flashing and/or by heating and flashing. The process is particularly applicable to the recovery of high pressure pure carbon dioxide from the wellhead products of carbon dioxide flooding used in enhanced oil recovery. The high pressure pure carbon dioxide is liquified and reinjected to the well at the desired pressure.

REFERENCES:
patent: 3453835 (1969-07-01), Hochgesand
patent: 3710546 (1973-01-01), Myumewald et al.
patent: 3910777 (1975-10-01), Jakob
patent: 3935188 (1976-01-01), Karwat
patent: 4332596 (1982-06-01), Ranke et al.
patent: 4372925 (1983-02-01), Cornelisse
patent: 4462814 (1984-07-01), Holmes et al.

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