Acrylonitrile recovery process
AssigneeThe Standard Oil Company
InventorsJames S. Gibson, Jeffrey E. Rinker, Paul T. Wachtendorf, Sanjay P. Godbole
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Abstract
A process for the recovery of acrylonitrile or methacrylonitrile obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene comprising passing the reactor effluent through an absorber column, a first decanter, recovery column, a second decanter and stripper column wherein the improvement comprises maintaining inside temperature of the first and second decanter at between about 32.degree. F. to 75.degree. F.
Claims7
A process for the manufacture of acrylonitrile or methacrylonitrile comprising transporting the reactor effluent obtained during the ammoxidation of propylene or isobutylene to a quench column wherein the hot effluent gases are cooled by contact with an aqueous spray, passing the cooled reactor effluent overhead to an absorber column wherein the crude acrylonitrile or methacrylonitrile is absorbed in water, passing the aqueous solution containing the crude acrylonitrile or methacrylonitrile to a first decanter where a first aqueous layer and a first organic layer containing acrylonitrile and methacrylonitrile are formed, transferring the first organic layer to a second decanter where a second water layer and second organic layer are formed, and recovering the acrylonitrile or methacrylonitrile from the second organic layer wherein the improvement comprises maintaining the first and second decanter at an inside temperature of about 32.degree. F. to about 75.degree. F.
Dependencies are inferred from the claim text.