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 56, 203 58, 203 64, 203 70, 585865, 585867, B01D 340
Patent
active
049484729
ABSTRACT:
A mixture of (a) at least one N-alkyl-2-pyrrolidone (preferably N-methyl-2-pyrrolidone) and (b) at least one glycol compound (preferably ethylene glycol or tetraethylene glycol) is used as solvent in the extractive distillation of a feed mixture of cycloalkane(s) (in particular cyclohexane) and close-boiling alkane(s).
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Brown Ronald E.
Lee Fu Ming
Brandes K. K.
Manoharan Virginia
Phillips Petroleum Company
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