Vapor recovery

Details Vapor recovery Vapor recovery

B - Operations, Transporting

01

D

23/360

B01D 47/00 (2006.01) B01D 53/14 (2006.01) C07C 7/11 (2006.01)

Patent

CA 1134121

3635 VAPOR RECOVERY Abstract of the Disclosure Volatile liquid, such as benzene, isoprene, cyclopenta- diene, 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 absorp- tion oil, heating and cooling duties are decreased.

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