System for purifying styrene monomer feedstock using ethylbenzen

Details System for purifying styrene monomer feedstock using ethylbenzen System for purifying styrene monomer feedstock using ethylbenzen

1991-11-04

1992-10-20

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

585260, B01J 818, C07C 503

Patent

active

051568160

ABSTRACT:
Processes and apparatus are disclosed for the catalytic purification of styrene monomer by hydrogenating the phenylacetylene contaminant therein to styrene in a catalytic bed using multiple hydrogen injection; dilution of the hydrogen by a diluent such as nitrogen; mixing the hydrogen with a catalyst-selectivity improver such as carbon monoxide; using ethylbenzene dehydrogenation ventgas to supply hydrogen; and, using a multiple-catalyst-bed-reactor, or multiple reactors, each with a single catalyst bed. One preferred phenylacetylene reduction catalyst used is palladium on an alumina carrier.

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