Patent ID: 6117404
Filing Date: 2000-09-12
Classification: B01D,Y02A,Y02C

Abstract:
A process for recovering a basic amine compound which comprises the steps of:(a) supplying a CO.sub.2 -containing gas to a carbon dioxide absorbing unit in which an absorbing solution which contains a basic amine compound absorbs carbon dioxide;(b) bringing the gas, from which carbon dioxide has been removed, into vapor-liquid contact with washing water at a temperature from 20 to 60.degree. C. in an amine recovering unit of a carbon dioxide removal tower, recovering part of the basic amine compound accompanying the gas into a water phase and discharging the gas as an exhaust gas from the carbon dioxide removal tower and;(c) collecting the basic amine compound which remains in the exhaust gas of the carbon dioxide removal tower by passing the exhaust gas through an exteriorly located demister at a temperature from 20 to 60.degree. C., wherein the temperature of the gas in the demister is lower than the temperature of the gas which enters the amine recovering unit, and wherein the demister is capable of being cooled and is in a wire mesh form having fine glass wool fibrous layers.