Process for the separation of mixtures of substances

US3969196A · kind A · utility

Assignee

• Studiengesellschaft Kohle gGmbH · DE

Inventor

• Kurt Zosel · Oberhausen, DE

Key dates

• Filing date: Dec 9, 1969
• Grant date: Jul 13, 1976
• Expiry date: Dec 9, 1989

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/54
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The process of separating a mixture which is in liquid state or solid state or liquid and solid state and contains at least one compound containing an organic group, which comprises PA1 A. contacting said mixture with a gas maintained under supercritical conditions of temperature and pressure such that the gas will take up at least a portion of said mixture in a quantity varying inversely with said temperature, and effecting said contacting in a manner so that this occurs, and so that there is a substantial gas component that is identifiable as gas phase, PA1 B. separating the gas in the form of said identifiable gas phase loaded with the compound taken up during said contacting from any of the mixture not taken up by the gas while still maintaining supercritical conditions as aforesaid, PA1 C. thereafter separating the compound from the gas.