Process for the preparation and fractionation of a mixture of di

Details Process for the preparation and fractionation of a mixture of di Process for the preparation and fractionation of a mixture of di

1997-06-23

1998-12-01

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 78, 203 79, 203 80, 203DIG23, 570262, 568699, B01D 338, C07C 17386, C07C 4142

Patent

active

058432868

ABSTRACT:
A process for the preparation and fractionation of a mixture of dimethyl ether and chloromethane by extractive distillation with water as extractant. The mixture is prepared by reacting methanol with hydrogen chloride. It is then subjected to an extractive distillation with water as extractant, resulting in chloromethane as top product. In the next step, the dimethyl ether is removed by distillation and, in another step, the extraction water is separated from the methanol which is still present.

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