Recovery of styrene from pyrolysis gasoline by extractive distil

Details Recovery of styrene from pyrolysis gasoline by extractive distil Recovery of styrene from pyrolysis gasoline by extractive distil

1997-10-29

1998-12-15

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

585806, 585807, 585808, 585857, 585862, 585863, 585860, 585864, 585868, 585866, 585834, 203 53, 203 58, 203 60, 203 92, 203 90, C07C 708, C07C 717, C07C 710, B01D 340

Patent

active

058499822

ABSTRACT:
An extractive distillation process for separating at least one substituted unsaturated aromatic from a pyrolysis gasoline mixture, containing said aromatic and at least one close-boiling aromatic or non-aromatic hydrocarbon, employing a two part extractive solvent, the first part selected from propylene carbonate, sulfolane (tetramethylene sulfone), methyl carbitol, 1-methyl-2-pyrrolidinone, 2-pyrrolidinone and mixtures thereof, and the second portion consisting of water.

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