Method for removing hydroformylation catalyst

Details Method for removing hydroformylation catalyst Method for removing hydroformylation catalyst

1992-05-29

1993-08-17

Lone, Werren B.

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

Organic compounds

Oxygen containing

568492, C07C 4550, C07C 4578

Patent

active

052371050

ABSTRACT:
A method for removing cobalt values from the crude product of a cobalt-catalyzed hydroformylation reaction which utilizes the same equipment in two different operating sequences to accommodate olefinic feedstocks having a wide range of carbon numbers. Olefinic feedstocks having a carbon number in the range C.sub.4 -C.sub.14, more preferably C.sub.5 -C.sub.7, can be decobalted by the application of an acid-air cobalt demetalling step upstream of the stripping step of a Cobalt Flash hydroformylation catalyst recovery process; whereas C.sub.7 to C.sub.20 olefinic feedstocks, more preferably C.sub.8 -C.sub.14, can be decobalted by application of the acid-air cobalt demetalling step downstream of the stripping step.

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