Airless cobalt demetalling in the cobalt flash combination catal

Details Airless cobalt demetalling in the cobalt flash combination catal Airless cobalt demetalling in the cobalt flash combination catal

1994-04-08

1995-04-25

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568438, 568452, 568492, C07C 4550, C07C 4578

Patent

active

054100909

ABSTRACT:
A method for removing cobalt values from the crude product of a cobalt-catalyzed hydroformylation reaction by the application of an airless cobalt demetalling step upstream of the stripping step of a Cobalt Flash hydroformylation catalyst recovery process for C.sub.4 to C.sub.14 olefins, whereby no oxygen is required to oxidize cobalt carbonyls to their cobaltous form. This airless demetalling step may also be used downstream of the stripping step in the case of C.sub.7 to C.sub.20 olefins to remove carbonyls from a water soluble cobaltous salt and carbon carbonyl stream which is taken as bottoms from the stripper reactor.

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