Cobalt catalyst recovery using heavy olefin absorbent

Patent · Tue Aug 17 04:00:00 EDT 1993

OSTI ID:6299442

Summerlin, W H

A method is described for removing cobalt values from the crude product of a cobalt-catalyzed hydroformylation reaction formed from an olefinic feedstock, said crude product containing cobalt compounds in addition to an organic hydroformylation reaction product, which comprises: (a) contacting said crude product with water and an organic acid selected from the group consisting of: formic acid, acetic acid, propionic acid, and acids having a boiling point approximately the same as water; (b) contacting the product of step (a) with a stream of stripping gas to entrain volatile cobalt compounds and light hydrocarbons in said stripping gas, whereby said entrained volatile cobalt compounds are taken out overhead and organic hydroformylation reaction products and water containing water soluble cobaltous salts dissolved therein are taken out as bottoms; (c) separating said water containing water soluble cobaltous salt of step (b) from said organic hydroformylation reaction products; (d) diverting said organic hydroformylation reaction product of step (c) for further downstream treatment by at least one method selected from the group consisting of: hydrogenation and distillation; and (e) contacting said volatile cobalt compounds from step (b) with an olefinic absorbent having a molecular weight greater than said olefinic feedstock, whereby said volatile cobalt compounds are absorbed into said olefinic absorbent, and said stripping gas and said light hydrocarbons are taken overhead as a gaseous product.

• Assignee: Exxon Chemical Patents Inc., Linden, NJ (United States)
• Patent Number(s): A; US 5237104
• Application Number: PPN: US 7-891317
• OSTI ID: 6299442
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACYLATION
ADSORBENTS
ADSORPTION
ALKENES
CATALYSTS
CHEMICAL REACTIONS
COBALT COMPOUNDS
DISTILLATION
FLUIDS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGENATION
MANAGEMENT
MATERIALS RECOVERY
MATTER
MOLECULAR WEIGHT
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
SEPARATION PROCESSES
SORPTION
TRANSITION ELEMENT COMPOUNDS
VOLATILE MATTER
WASTE MANAGEMENT
WASTE PROCESSING
WATER