Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1989-07-12
1990-08-14
Manoharan, Virginia
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 52, 203 53, 203 58, 203 69, 203 70, 585865, 585867, B01D 340
Patent
active
049484702
ABSTRACT:
A mixture of (a) at least one N-alkyl-2-pyrrolidone (preferably N-methyl-2-pyrrolidone) and (b) at least one sulfolane (preferably unsubstituted sulfolane) is used as solvent in the extractive distillation of feed mixture of cycloalkane(s) (in particular cyclohexane) and close-boiling alkane(s).
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Brandes K. K.
Manoharan Virginia
Phillips Petroleum Company
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