Drying of gases with multi-layer adsorption beds

US4636225A · kind A · utility

Assignee

• Linde GmbH · DE

Inventors

• Guenter Klein · Munster, DE
• Hans J. Wernicke · Wolfratshausen, DE

Key dates

• Filing date: Mar 22, 1985
• Grant date: Jan 13, 1987
• Expiry date: Mar 22, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/402
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

For drying a gaseous stream in thermally regenerable cyclically connected adsorbers wherein the gaseous stream contains components polymerizable under regeneration conditions, the bed is subdivided into several layers having different adsorbents. The first layer consists essentially of an adsorbent, e.g., zeolite type 4A, having a higher adsorption capacity for polymerizable compounds than the second layer, e.g., zeolite type 3A but with the second layer adsorbent being mechanically more stable than the first layer adsorbent.