公开(公告)号：DE2626887A1

公开(公告)日：1977-12-22

申请号：DE2626887

申请日：1976-06-16

Applicant: BASF AG

Inventor： KRABETZ RICHARD DIPL CHEM DR ,  HERRMANN WALTER DIPL ING DR ,  SCHOLZ NORBERT ING GRAD ,  ENGELBACH HEINZ DIPL CHEM DR ,  ENGERT GERD-JUERGEN DIPL CHEM ,  WILLERSINN CARL-HEINZ DIPL CHE ,  DUEMBGEN GERD DIPL CHEM DR ,  THIESSEN FRITZ DIPL CHEM DR

IPC: B01J23/00 ,  B01J23/24 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/34 ,  B01J23/88 ,  B01J23/89 ,  B01J37/02 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

Abstract: Catalysts which consist of a molded carrier, the surface of which is coated with an active catalyst composition of the general formula Mo12AaBbCcDdOx, where A is V and/or W, B is Cu and/or Fe and/or Mn and/or Ni and/or Cr, C is Nb and/or Ta and/or Bi and/or Sb and/or Sn and/or Th and/or Ce and/or U, D is Li and/or Na and/or K and/or Rb and/or Cs and/or Tl and a is from 0.1 to 18, b is from 0 to 8, c is from 0 to 10, d is from 0 to 2 and x is from 36 to 135, which are particularly active and selective for the oxidation of acrolein and methacrolein with oxygen-containing gases to give acrylic acid and methacrylic acid, respectively, are obtained by first manufacturing the catalyst composition, before applying it to the carrier, from thermally easily decomposed salts of the components by mixing aqueous solutions, slurries or moist solid masses of the salts of the components, drying the mixture and calcining the dried composition at from 140 DEG to 600 DEG C., then milling it to a particle size of less than 150 mu m and thereafter applying it, as a mixture with water, as a layer from 10 to 1,500 mu m thick, to the premolded carrier, which has a rough surface.

公开(公告)号：DE2849664A1

公开(公告)日：1980-06-04

申请号：DE2849664

申请日：1978-11-16

Applicant: BASF AG

Inventor： ENGERT GERD-JUERGEN DIPL CHEM ,  DE HAAS KLAUS DIPL PHYS DR ,  MAGIN RUDOLF DIPL ING DR ,  NENNINGER FRANZ ING GRAD ,  SCHAUER HORST DIPL ING

IPC: B01J4/02 ,  B01J8/00 ,  B01J8/06

Abstract: A mechanical process for filling the tubes (3) of tubular reactors with granular solids, e.g. catalysts, wherein two or more streams of material, e.g. of different catalytic activity, can be introduced in a controlled manner into each tube (3) which is to be filled, from two or more stock vessels (1,2) via two or more dispensing devices (MI, MZ) mounted above the upper tube end plate (13). By this process, different thermal/catalytic reaction profiles can be achieved over the length of the tube, or in certain groups of tubes within the tubular reactor, with substantially less time being required for filling the tubes (3).

公开(公告)号：DE2513405A1

公开(公告)日：1976-10-14

申请号：DE2513405

申请日：1975-03-26

Applicant: BASF AG

Inventor： ENGELBACH HEINZ DIPL CHEM DR ,  KRABETZ RICHARD DIPL CHEM DR ,  DUEMBGEN GERD DIPL CHEM DR ,  LEBERT ULRICH DIPL CHEM DR ,  THIESSEN FRITZ DIPL CHEM DR ,  SCHAUER HORST DIPL ING ,  ENGERT GERD-JUERGEN DIPL CHEM

IPC: B01D5/00 ,  B01J8/06 ,  C07C45/35 ,  C07C51/25 ,  C07C57/04

Abstract: In the novel prepn of acrylic acid by the oxidation of propylene with O2-contg. gases in the presence of two different catalysts placed one behind the other in a tubular reactor, at 200-400 degrees C, cooling the reactor is effected in two separate zones such that (a) the temp. of the cooling medium, in the direction of reaction gas flow in the first zone, where propylene is oxidised to acrolein, is 20-150 degrees C higher than the temp. of the cooling medium in the second zone where the acrolein formed in the presence of the first catalyst, is oxidised in the presence of the other catalyst to acrylic acid, (b) the temp. of the cooling medium within both zones increases only by up to 50 degrees C and (c) the reaction gases before reaching the second catalyst are cooled to the temp. of the second cooling medium in an intermediate space filled with the second reactor. Post-combination of the reaction gases in the first catalyst stage is obviated. Plant requirements are reduced and the process affords good control at optimal acrylic acid yield.

公开(公告)号：DE3020845A1

公开(公告)日：1981-12-17

申请号：DE3020845

申请日：1980-06-02

Applicant: BASF AG

Inventor： MAGIN RUDOLF DIPL ING DR ,  NENNINGER FRANZ ING GRAD ,  ENGERT GERD-JUERGEN DIPL CHEM

IPC: B01J4/02 ,  B01J4/00 ,  B01J8/00 ,  B01J8/02 ,  B01J8/06

Abstract: A process and device for charging a plurality of tubes in a tube reactor with granular solids, preferably with catalysts, which, for this purpose, are fed from one or more stock vessels to a controllable metering device and from there, via guiding and directing devices and flexible hose connections, successively into the tubes to be filled, wherein, during the packing of the tubes, a stream of gas of constant amount is generated, which can, after an individual tube has been packed, be passed temporarily, via one or more controllable valves, through this packed tube, a pressure drop measurement being carried out at the same time and the differential between the measured value and the predetermined intended value being used to determine a small additional amount of packing material which is subsequently introduced into the tube which has been subjected to measurement, and wherein thereafter a program control triggers the mechanical packing of the next tube, metered in the same manner, with subsequent pressure drop measurement and metering of the additional amount.

公开(公告)号：DE2613244A1

公开(公告)日：1977-10-27

申请号：DE2613244

申请日：1976-03-27

Applicant: BASF AG

Inventor： DUEMBGEN GERD DIPL CHEM DR ,  ENGELBACH HEINZ DIPL CHEM DR ,  ENGERT GERD-JUERGEN DIPL CHEM ,  KRABETZ RICHARD DIPL CHEM DR ,  SCHAUER HORST DIPL ING ,  THIESSEN FRITZ DIPL CHEM DR ,  WILLERSINN CARL-HEINZ DIPL CHE

IPC: B01J27/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/05 ,  C07C67/00 ,  C07C57/04 ,  C07C51/32