Recycling process for adsorber regeneration

US10137400B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hans-Guenter Wagner · Havelsee, DE
• Christoph Bayer · Nuremberg, DE
• Lothar Karrer · Ludwigshafen, DE
• Heinz Ruetter · Kapellen, BE
• Patrik Pietz · Shanghai, CN
• Sven Crone · Schifferstadt, DE
• Markus Eggersmann · Speyer, DE
• Kam Wing Wong · Tsuen Wan, CN

Key dates

• Filing date: Oct 9, 2014
• Grant date: Nov 27, 2018
• Expiry date: Oct 9, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/40067
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the regeneration of an adsorber. For the regeneration a liquid stream (S2) comprising at least one alkane is converted from liquid phase into gaseous phase. Then the adsorber is regenerated and heated by contact with gaseous stream (S2) up to 230 to 270° C. Subsequently, the adsorber is cooled first by contact with gaseous stream (S2) to a temperature of 90 to 150° C. followed by cooling with liquid stream (S2) to a temperature below 80° C. The outflow of the adsorber (S2*) during the cooling with gaseous stream (S2) and optionally the outflow of the adsorber (S2*) during cooling with liquid stream (S2) is recycled in at least one of these steps.