UN PROCEDIMIENTO MEJORADO PARA LA RECUPERACION DE ACRILONITRILO O METACRILONITRILO DEL EFLUENTE DE UN REACTOR DE AMOXI- DACION.

摘要

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.