Extractive distillation of conjugated diene

Details Extractive distillation of conjugated diene Extractive distillation of conjugated diene

2009-03-30

2011-12-13

Nguyen, Tam M (Department: 1772)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By plural serial diverse separations

C585S833000, C585S860000, C585S865000

Reexamination Certificate

active

08076526

ABSTRACT:
A process for isolating a conjugated diene from a hydrocarbon mixture is disclosed. The process comprises distilling the hydrocarbon mixture in the presence of an extraction solvent comprising an N,N-dialkyl aliphatic amide and from 12 to 50 weight percent furfural to separate a distillate and a conjugated diene-rich extract; and recovering the conjugated diene from the extract.

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