公开(公告)号：ZA200605102B

公开(公告)日：2007-12-27

申请号：ZA200605102

申请日：2006-06-21

Applicant: BASF AG

Inventor： CLAUS HECHLER ,  GERHARD OLBERT ,  DIETMAR LOWEN

IPC: C07C20090101 ,  C07C51/21

Abstract: Method for preparing (meth)acrolein and/or (meth)acrylic acid by partial gas-phase oxidation of 3-4C precursors in presence of a heterogeneous, particulate catalyst (A). Method for preparing (meth)acrolein and/or (meth)acrylic acid by partial gas-phase oxidation of 3-4C precursors in presence of a heterogeneous, particulate catalyst (A). Oxidation is done in a reactor having 2 or more vertical thermal plates (1), arranged in parallel and with gaps (2) between them, where (2) contain the catalyst and the gaseous reaction mixture is supplied to (2). The new feature is that the method is monitored, controlled and/or regulated through one or more temperature measurements, taken in one or more (2), at one or more measuring sites, distributed over the height of each (2). An independent claim is also included for a method of incorporating temperature-measuring devices into a reactor, on the same side of the reactor as the feed line for supplying gaseous reaction mixture.