公开(公告)号：US09422218B2

公开(公告)日：2016-08-23

申请号：US14737889

申请日：2015-06-12

Applicant: BASF SE

Inventor： Volker Schliephake ,  Klaus Bott ,  Rolf-Dieter Becher ,  Klaus Joachim Mueller-Engel ,  Jochen Petzoldt ,  Ulrich Cremer ,  Andreas Raichle

IPC: B01J8/06 ,  B08B9/043 ,  C07C51/25 ,  B01J8/00 ,  C07C45/35

CPC classification number: C07C51/252 ,  B01J8/0045 ,  B01J8/06 ,  B01J2208/00761 ,  B08B9/0436 ,  C07C45/35

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.