Process for sweeping methane from a physical solvent

Details Process for sweeping methane from a physical solvent Process for sweeping methane from a physical solvent

1980-11-13

1982-03-09

Adee, John

Gas separation

Means within gas stream for conducting concentrate to collector

55 53, 55 55, 55 73, B01D 4500

Patent

active

043187153

ABSTRACT:
The present invention provides a process for sweeping methane from a physical solvent used to remove carbon dioxide and hydrogen sulfide impurities from an impure methane stream. This process includes the steps of cocurrently mingling a mixture of physical solvent, methane, carbon dioxide and hydrogen sulfide with a flash gas to form a resulting gas and liquid mixture that has a higher concentration of carbon dioxide and a higher concentration of hydrogen sulfide than the liquid stream, and then flashing and separating the resulting stream at a pressure lower than the liquid feed pressure to yield a flash liquid that is further flashed at a pressure lower than the preceding flash pressure to provide the flash gas mingled with the feed liquid stream.

REFERENCES:
patent: 2662049 (1953-12-01), Magoa et al.
patent: 3188287 (1965-06-01), Hull
patent: 3518056 (1970-06-01), Klett
patent: 3594985 (1971-07-01), Ameen
patent: 4080424 (1978-03-01), Miller

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