公开(公告)号：JP2000065608A

公开(公告)日：2000-03-03

申请号：JP22323099

申请日：1999-08-06

Applicant: BASF AG

Inventor： HILDEBRANDT VOLKER ,  BREEDE KNUT ,  HLAWITSCHKA WERNER

IPC: G01F1/00 ,  B01J3/00 ,  B01J4/00 ,  B01J19/18

Abstract: PROBLEM TO BE SOLVED: To obtain a method for protecting a pressure reactor from failures caused by contamination while carrying out a reaction with a medium in a gas state or supercritical state. SOLUTION: In this method for metering, introducing a medium in a gas state or supercritical state to a pressure reactor 1, the pressure rector 1 has a reaction chamber 13 connected to a stirrer dome 5 via a feeder. A preliminarily determined volume flow or mass flow of the medium is introduced to the pressure reactor 1 so that a pressure in the stirrer dome 5 becomes larger than a pressure in the reaction chamber 13. The apparatus meters, introduces the medium in a gas state or supercritical state.

公开(公告)号：CA2279627A1

公开(公告)日：2000-02-07

申请号：CA2279627

申请日：1999-08-04

Applicant: BASF AG

Inventor： HILDEBRANDT VOLKER ,  HLAWITSCHKA WERNER ,  BREEDE KNUT

IPC: G01F1/00 ,  B01J3/00 ,  B01J4/00 ,  B01J19/18 ,  B01J3/02

Abstract: The invention relates to a method for metering a medium which is gaseous or in the supercritical state, into a pressure reactor (1). The pressure reactor has a reaction chamber (13) which is connected to a stirrer dome into which the medium is metered at a predetermined volume flow or mass flow in such a way that the pressure in the stirrer dome becomes greater than the pressure in the reaction chamber. This prevents reactive mixtures from diffusing from the reaction chamber into the cavity. The invention also relates to uses of the method. For example, it can be used for purging the pressure reactor, for protecting the stirrer drive, for cooling or heating the contents of the reaction chamber, for regulating the reaction rate, for metering a reactant into the reaction chamber and for controlled charging or pressure release of the pressure reactor. The invention also relates to an apparatus for metering a medium which is gaseous or in the supercritical state.

公开(公告)号：DE19835914A1

公开(公告)日：2000-02-17

申请号：DE19835914

申请日：1998-08-07

Applicant: BASF AG

Inventor： HILDEBRANDT VOLKER ,  BREEDE KNUT ,  HLAWITSCHKA WERNER

IPC: G01F1/00 ,  B01J3/00 ,  B01J4/00 ,  B01J19/18 ,  B01J3/02 ,  B01J3/03 ,  C07C31/00 ,  C07C35/02

公开(公告)号：DE3625006A1

公开(公告)日：1987-04-30

申请号：DE3625006

申请日：1986-07-24

Applicant: BASF AG

Inventor： TRAUTMANN WALTER DR ,  HLAWITSCHKA WERNER ,  HENNE ANDREAS DR ,  WEBER WILHELM DR

IPC: B01J19/12 ,  B01J19/08

Abstract: Photoreactor for photochemical syntheses, comprising, concentrically arranged from the inside to the outside, a lamp (4) with the electrical connections, an annular lamp cooler (5) made of glass with connections for a cooling medium flowing in and out and a reaction space (6) delimited by the outer casing of the lamp cooler and by the inner casing of the reactor (1) having a metal-coated interior wall, an apparatus (7) equipped with brushes or wipers (8) rotating in the reaction space, which apparatus is arranged so that on operation of the photoreactor, the outer casing of the lamp cooler is kept free from a light-absorbing deposit.