Extractive distillation of conjugated diene
AssigneeLyondell Chemical Technology, L.P.
InventorRobert W. Mason
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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.
Claims12
A process for isolating a conjugated diene from a hydrocarbon mixture, comprising (a) 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;
- (b) recovering the conjugated diene from the extract.
Dependencies are inferred from the claim text.