Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1989-09-08
1990-09-11
Manoharan, Virginia
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 14, 203 58, 203 70, 585865, 585867, B01D 340
Patent
active
049554689
ABSTRACT:
An extractive distillation process for separating at least one cycloalkane or aromatic hydrocarbon from at least one close-boiling alkane employs as solvent at least one N-mercaptoalkyl-2-pyrrolidone, preferably N-(.beta.-mercaptoethyl)-2-pyrrolidone, either alone or in admixture with about 0.1-10 weight-% water.
A liquid-liquid extraction process for separating at least one cycloalkane or aromatic hydrocarbon from at least one alkane employs as solvent at least one N-mercaptoalkyl-2-pyrrolidone, preferably N-(.beta.-mercaptoethyl)-2-pyrrolidone, either alone or in admixture with about 0.1-10 weight-% water.
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Brandes K. K.
Manoharan Virginia
Phillips Petroleum Company
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