Process for separating ethylbenzene and styrene by distillation

US5386075A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Thomas Keil · Marl, DE
• Wilhelm Huwels · Essen, DE
• Georg DOLL · Essen, DE

Key dates

• Filing date: Oct 7, 1993
• Grant date: Jan 31, 1995
• Expiry date: Oct 7, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for separating ethylbenzene and styrene by distillation is described. The process provides the advantages of a vapor compression/heat pump system, and is designed in such a manner that the energy applied is optimally utilized. The head pressure of the distillation column (1) is controlled in a simple manner, whereby a surprisingly stable column is achieved.