Process for recovery of olefinic nitriles

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

1980-12-31

1982-06-15

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

And recovering heat by indirect heat exchange

Utilizing recovered heat for heating the distillation zone

203 14, 203 42, 203 84, 203 85, 203DIG3, 203DIG19, 159 17P, 2604659, B01D 340, C07C12132

Patent

active

043349650

ABSTRACT:
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 acrylonitrile 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 evaporator represents a significant energy savings as compared with other techniques for decreasing the water content of the recycle stream.

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patent: 4166008 (1979-08-01), Wu et al.

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