Patent ID: 6264800
Filing Date: 2001-07-24
Classification: B01D,C07C,Y10S

Abstract:
A process for separating a glycol di-alkyl ether from a glycol mono-alkyl ether which comprises introducing a mixture of glycol di-alkyl either and glycol mono-alkyl ether to be separated into the upper section of a fractional distillation column and introducing a stream of liquid water or steam stripping component into said column, providing necessary vaporization by means of a bottoms reboiler, removing an overhead vapor stream comprised of the introduced stripping component together with at least a predominance of the glycol di-alkyl ether removing a liquid bottoms stream comprised of the glycol mono-alkyl ether reduced in the glycol di-alkyl ether, heating part of the bottoms to vaporize at least a portion thereof, and returning the heated bottoms to the column.