Process for the recovery of olefinic nitriles

Details Process for the recovery of olefinic nitriles Process for the recovery of olefinic nitriles

C - Chemistry, Metallurgy

07

C

202/71, 260/562.

C07C 121/32 (1980.01)

Patent

CA 1164014

ABSTRACT OF THE DISCLOSURE A multi-stage evaporator is used to remove water from the extracted distillation or stripper tower bottoms recycled as quench liquid to the quench tower of an acrylo- nitrile purification and recovery system. This results in a significant decrease in the amount of waste quench tower bottoms produced by the system. Use of a multi-effect evap- orator represents a significant energy savings as compared with other techniques for decreasing the water content of the recycle stream.

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