公开(公告)号：BR0009000A

公开(公告)日：2002-01-02

申请号：BR0009000

申请日：2000-03-15

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08 ,  B01J8/00

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.

公开(公告)号：AU6994300A

公开(公告)日：2001-03-19

申请号：AU6994300

申请日：2000-08-10

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESSLING BERND ,  REUTER PETER ,  LORZ PETER MICHAEL ,  ULRICH BERNHARD ,  KNAB JEAN WERNER ,  KUMMER MATTHIAS ,  RUHL THOMAS

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  C07C51/573 ,  C07C63/16 ,  C07D307/89

Abstract: On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or in the vicinity of the top of the distillation column and the on-spec phthalic anhydride is removed from the column via a side take-off.

公开(公告)号：DE19939629A1

公开(公告)日：2001-02-22

申请号：DE19939629

申请日：1999-08-20

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESLING BERND ,  REUTER PETER ,  LORZ PETER MICHAEL ,  ULRICH BERNHARD

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  C07C51/573 ,  C07C63/16 ,  C07D307/89

Abstract: Production of phthalic anhydride involves the distillation of crude PA under reduced pressure. Production of phthalic anhydride (PA) which complies with specifications involves the distillation of crude PA under reduced pressure in a column from which the volatiles are taken off at or near the top of the column and the pure PA is taken off at a side arm.

公开(公告)号：AU4538700A

公开(公告)日：2000-10-04

申请号：AU4538700

申请日：2000-03-15

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08 ,  B01J8/00

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.

公开(公告)号：FI865079A

公开(公告)日：1987-06-13

申请号：FI865079

申请日：1986-12-12

Applicant: BASF AG

Inventor： EICHHORN HANS-DIETER ,  MENGER VOLKMAR ,  REUTER PETER ,  SCHMIDT JOHANNES E ,  SCHWARZMANN MATTHIAS

IPC: C07C51/265 ,  C07D

公开(公告)号：CA1168208A

公开(公告)日：1984-05-29

申请号：CA396272

申请日：1982-02-15

Applicant: BASF AG

Inventor： REUTER PETER ,  BLECHSCHMITT KURT ,  WIRTH FRIEDRICH

IPC: C07D307/89 ,  B01J23/92 ,  B01J27/28 ,  B01J27/32 ,  B01J37/20 ,  B01J37/28 ,  B01J38/12 ,  B01J38/20 ,  C07B61/00 ,  C07C51/265 ,  B01J23/22

Abstract: O.Z. 0050/34985 A process for reactivating a vanadium-containing oxidation catalyst, wherein the catalyst is treated first at from 100 to 600.degree.C, with a volatile phosphorus compound in the presence of an oxygen-containing gas, and then at from 50 to 600.degree.C with sulfur trioxide or a mixture of a volatile sulfur compound and an oxygen-containing gas.

公开(公告)号：CA1144913A

公开(公告)日：1983-04-19

申请号：CA349042

申请日：1980-04-02

Applicant: BASF AG

Inventor： REUTER PETER ,  BLECHSCHMITT KURT ,  WIRTH FRIEDRICH

IPC: C07D307/89 ,  B01J21/06 ,  B01J23/22 ,  B01J35/02 ,  B01J35/04 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/83

Abstract: of the disclosure: A supported catalyst, containing vanadium and titanium and/or zirconium, obtained by applying a mixture of finely divided titanium dioxide and/or zirconium dioxide, and a solution or suspension of a vanadium compound, to an inert, non-porous, ringshaped carrier having an external diameter of from 6 to 10 mm, a length of from 4 to 10 mm and a wall thickness of from 0.5 to 3 mm, the two end faces of the ringshaped carrier being outwardly beveled at an angle such that the length of the outer cylindrical wall is at least 20 % shorter than the length of the inner cylindrical wall.

公开(公告)号：CA1074287A

公开(公告)日：1980-03-25

申请号：CA246066

申请日：1976-02-18

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  REUTER PETER ,  WIRTH FRIEDRICH ,  BUERGER GERT ,  SEUBERT ROLF

IPC: C07D307/89 ,  B01J23/22 ,  B01J35/02 ,  B01J35/04 ,  B01J37/02 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  B01J21/06

Abstract: A supported catalyst containing vanadium and titanium and/or zirconium comprising a ring-shaped carrier having an external diameter of from 7.3 to 8.6 mm, a length of from 5.3 to 7 mm and a wall thickness of from 0.1 to 2 mm, and an active composition, applied thereto, of from 1 to 30 per cent by weight of vanadium pentoxide and from 70 to 99 per cent by weight of titanium dioxide and/or zirconium dioxide. This catalyst can be used for the manufacture of phthalic anhydride by catalytic oxidation of o-xylene or naphthalene with air.

公开(公告)号：CA1067884A

公开(公告)日：1979-12-11

申请号：CA230777

申请日：1975-07-04

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  WIRTH FRIEDRICH ,  HORNBERGER PAUL ,  REUTER PETER ,  BUERGER GERT

IPC: C07D307/89 ,  B01J23/22 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  B01J21/06 ,  B01J23/04

Abstract: Supported catalyst for the oxidation of o-xylene or naphthalene to phthalic anhydride, comprising an inert carrier and the active material applied thereto, which contains from 1 to 40 per cent by weight of vanadium pentoxide, from 60 to 98.84 per cent by weight of titanium dioxide and from 0.16 to 0.6 per cent by weight, based on titanium dioxide, of rubidium, the vanadium pentoxide content being from 0.05 to 4 per cent by weight, based on the (complete) catalyst.