Processes for removing organic components from gases containing hydrogen chloride

US7837767B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Ole Brettschneider · Berlin, DE
• Knud Werner · Krefeld, DE

Key dates

• Filing date: Apr 28, 2008
• Grant date: Nov 23, 2010
• Expiry date: Jan 27, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Processes comprising: providing a crude gas stream having a temperature not exceeding 40° C., the crude gas stream comprising hydrogen chloride and at least one organic impurity; condensing at least a portion of the at least one organic impurity from the crude gas stream at a temperature not exceeding 0° C. to form a prepurified gas stream and a condensate comprising condensed organic impurity; subjecting at least a portion of the prepurified gas stream to adsorption on an adsorption medium to provide a purified gas stream; and separating the condensate into at least a head gas stream comprising residual hydrogen chloride and a sump stream comprising at least a portion of the condensed organic impurity.