METHOD OF OPERATING DISTILLATION COLUMN FOR PURIFYING 1,2-DICHLOROETHANE AND FOR COMBINED EVAPORATION OF SODIUM HYDROXIDE SOLUTION Russian patent published in 2012 - IPC C07C17/02 C07C19/45 C01D1/42 C07C17/383 F28D21/00

Abstract RU 2455274 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of using a distillation column to remove water and components with boiling point lower than that of 1,2-dichloroethane from 1,2-dichloroethane. The method is characterised by that at least a portion of condensation heat of water-containing secondary steam from the distillation column is used to evaporate sodium hydroxide solution.

EFFECT: use of the present method enables to optimise use of released heat and reduce consumption of cooling water.

3 cl, 1 dwg

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RU 2 455 274 C2

Authors

Petersen Sven

Ben'E Mikhel'

Kammerkhofer Peter

Dates

2012-07-10—Published

2006-09-07—Filed