Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1984-10-19
1987-03-03
Bashore, S. Leon
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 50, 203 74, 203 78, 203DIG19, 203 99, 585810, 585865, B01D 340
Patent
active
046473440
ABSTRACT:
Isoprene is recovered from a C.sub.5 -hydrocarbon mixture containing isoprene, penta-1,3-diene and cyclopentadiene by separating the said mixture by liquid-liquid extraction or extractive distillation with the aid of a selective solvent, in combination with a distillation upstream or downstream from the liquid-liquid extraction or extractive distillation, by a method in which a stream containing penta-1,3-diene and cyclopentadiene is separated off in the upstream or downstream distillation and is catalytically hydrogenated, and the hydrogenated stream is fed to the upper part of the liquid-liquid extraction or extractive distillation.
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Lindner Alfred
Rebafka Walter
Volkamer Klaus
Wagner Ulrich
BASF - Aktiengesellschaft
Bashore S. Leon
Manoharan V.
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