Title:
【発明の名称】塩化ビニルを精製する方法および装置
Document Type and Number:
Japanese Patent JPH09506362
Kind Code:
A
Abstract:
In the preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane, three distillation stages are used to distill off first hydrogen chloride, then vinyl chloride and finally entrained hydrogen chloride with vinyl chloride. If, in the last stage, entrained water is not drawn off via the bottom, it is recirculated with the top product to the first stage and causes corrosion. Removal of the water at the top of the third distillation stage, advantageously by drying, prevents the corrosion.
Inventors:
Schwarzmeier Peter
Kammerhofer Peter
Steger Manfred
Karlvoda Helmut
Mirke Inn Golf
Kammerhofer Peter
Steger Manfred
Karlvoda Helmut
Mirke Inn Golf
Application Number:
JP51596895A
Publication Date:
June 24, 1997
Filing Date:
December 06, 1994
Export Citation:
Assignee:
HOECHST AKTIENGESELLSCHAFT
International Classes:
B01J14/00; C07C17/25; C07C17/38; C07C17/383; C07C17/389; C07C21/06; (IPC1-7): C07C21/06; C07C17/25; C07C17/383; C07C17/389
Attorney, Agent or Firm:
Mitsuyoshi Esaki (3 outside)
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