Vapor recovery

Details Vapor recovery Vapor recovery

1979-10-19

1981-04-21

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 48, 55 49, 55 89, 208341, 585804, B01D 1104, B01D 5314

Patent

active

042630193

ABSTRACT:
Volatile liquid, such as benzene, isoprene, cyclopentadiene, butadiene present as a vapor in a blanket gas released from a storage zone for the liquid is absorbed from the gas by use of an absorption oil, followed by contacting of the rich absorption oil with an immiscible extraction solvent in an amount much less than the absorption oil to extract absorbed volatile liquid and provide a lean absorption oil. The volatile liquid is recovered from the extraction solvent, for example, by stripping. By recovering the volatile liquid from the small amount of extraction solvent, rather than the absorption oil, heating and cooling duties are decreased.

REFERENCES:
patent: 1463782 (1923-08-01), Armstrong
patent: 2180496 (1939-11-01), Balcar
patent: 2395362 (1946-02-01), Welling
patent: 2659453 (1953-11-01), Robinson
patent: 3466344 (1969-09-01), De Graff et al.
patent: 3499043 (1970-03-01), Kling
patent: 3828099 (1974-08-01), Sato et al.
patent: 4038332 (1977-07-01), Carter
patent: 4066423 (1978-01-01), McGill et al.

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