Process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed

US9126171B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Volker Schliephake · Schifferstadt, DE
• Klaus Bott · Ludwigshafen, DE
• Rolf-Dieter Becher · Mannheim, DE
• Klaus Joachim Mueller-Engel · Blankenloch, DE
• Jochen Petzoldt · Mannheim, DE
• Ulrich Cremer · Mannheim, DE
• Andreas Raichle · Ludwigshafen, DE

Key dates

• Filing date: May 30, 2008
• Grant date: Sep 8, 2015
• Expiry date: Dec 20, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2208/00761
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed, in which a heterogeneously catalyzed partial gas phase oxidation of an organic compound had been performed beforehand in a preceding fixed catalyst bed comprising Mo-comprising multielement oxide active compositions to form a steam-comprising product gas mixture, in which, before the recharge, solid deposit which had been deposited on the tube inner walls and comprises molybdenum oxide and/or molybdenum oxide hydrate is brushed away with the aid of a brush.