公开(公告)号：AT450495T

公开(公告)日：2009-12-15

申请号：AT05819946

申请日：2005-12-21

Applicant: BASF SE

Inventor： HECHLER CLAUS ,  OLBERT GERHARD

IPC: C07C51/265 ,  C07D307/89

Abstract: Processes comprising: (a) providing a reactant comprising a component selected from the group consisting of o-xylene, naphthalene and mixtures thereof, and a gas comprising oxygen; (b) reacting the reactant and the gas in a reaction system, in the presence of a catalyst, to form phthalic anhydride; wherein the reaction system comprises: (i) at least two reaction zones, each reaction zone cooled with a coolant; and (ii) an intermediate cooling zone disposed between a first of the at least two reaction zones and a second of the at least two reaction zones; and wherein the coolant entering the first of the at least two reaction zones has a temperature which is more than 20° C. higher than a temperature of the coolant entering the second of the at leas two reaction zones.

公开(公告)号：SG149877A1

公开(公告)日：2009-02-27

申请号：SG2009004961

申请日：2004-12-21

Applicant: BASF SE

Inventor： OLBERT GERHARD ,  HECHLER CLAUS ,  LOEWEN DIETMAR

IPC: B01J8/00 ,  B01J8/02 ,  B01J19/00 ,  B01J19/24 ,  G05D23/00

Abstract: Method For Monitoring, Controlling And/Or Regulating The Reactions Of A Fluidic Reaction Mixture In A Reactor Using Thermal Sheet Metal Plates A process is proposed for monitoring, controlling and/or regulating reactions of a fluid reaction mixture in the presence of a heterogeneous particulate catalyst, in a reactor having two or more thermoplates (1) arranged vertically and parallel to each other while in each case leaving a gap (2), the heterogeneous particulate catalyst being installed in the gaps (2) and the fluid reaction mixture being passed through the gaps (2), which comprises selecting as a regulation signal the temperature which is determined in one or more gaps (2), at two or more measurement points which are distributed over the height of each gap (2).