公开(公告)号：AU9177901A

公开(公告)日：2002-03-04

申请号：AU9177901

申请日：2001-08-20

Applicant: BASF AG

Inventor： REUTER PETER ,  ULRICH BERNHARD ,  HEIDEMANN THOMAS

IPC: C07D307/89 ,  C07B61/00 ,  C07C51/265 ,  C07C63/06 ,  C07C63/16

Abstract: Aromatic hydrocarbons are partially oxidized in the gas phase over a catalyst at elevated temperature to form carboxylic acids or carboxylic anhydrides in a process in which a gas stream laden with the starting materials is passed through a shell-and-tube reactor whose temperature is controlled by means of one or more separate thermostatting baths conveyed in countercurrent to the starting gas stream, wherein the difference between the temperature of the thermostatting bath in the region of the reactor outlet and the temperature of the product gas stream leaving the reactor is employed to control the selectivity of the gas-phase oxidation.

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：MY129170A

公开(公告)日：2007-03-30

申请号：MYPI9800842

申请日：1998-02-26

Applicant: BASF AG

Inventor： ULRICH BERNHARD ,  CIMNIAK THOMAS ,  HEIDEMANN THOMAS

IPC: B01J37/02 ,  B01J21/06 ,  B01J23/22 ,  C07C51/255 ,  C07C51/265 ,  C07C51/31 ,  C07C63/16

Abstract: IN A PROCESS FOR PRODUCING COATED CATALYSTS FOR THE CATALYTIC GAS-PHASE OXIDATION OF AROMATIC HYDROCARBONS TO GIVE CARBOXYLIC ACIDS AND/OR CARBOXYLIC ANHYDRIDES, ON THE SUPPORT MATERIAL OF WHICH A LAYER COMPRISING CATALYTICALLY ACTIVE METAL OXIDES IS APPLIED IN THE FORM OF A SHELL, A POWDER IS FIRST PRODUCED FROM A SOLUTION OR A SUSPENSION OF THE CATALYTICALLY ACTIVE METAL OXIDES AND THEIR PRECURSOR COMPOUNDS OR THESE PRECURSOR COMPOUNDS ALONE IN THE PRESENCE OR ABSENCE OF AUXILIARIES FOR CATALYST PRODUCTION, THE POWDER IS SUBSEQUENTLY APPLIED IN THE FORM OF A SHELL IN THE PRESENCE OR ABSENCE OF AUXILIARIES FOR CATALYST PRODUCTION TO THE SUPPORT AFTER OR WITHOUT PRIOR CONDITIONING, WITHOUT PRIOR HEAT TREATMENT TO GENERATE THE CATALYTICALLY ACTIVE METAL OXIDES AND THE SUPPORT COATED IN THIS WAY IS SUBJECTED TO A HEAT TREATMENT TO GENERATE THE CATALYTICALLY ACTIVE METAL OXIDES.

公开(公告)号：ES2246249T3

公开(公告)日：2006-02-16

申请号：ES00958412

申请日：2000-08-10

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESSLING BERND ,  REUTER PETER ,  LORZ PETER MICHAEL ,  ULRICH BERNHARD ,  KNAB JEAN WERNER

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

Abstract: Procedimiento para la obtención de anhídrido de ácido ftálico correspondiente a especificación mediante purificación por destilación de anhídrido de ácido ftálico crudo, caracterizado porque se alimenta anhídrido de ácido ftálico crudo a una columna de destilación, que se acciona a presión reducida, se extrae los productos de bajo punto de ebullición en la cabeza o en la proximidad de la cabeza de la columna de destilación, y se extrae el anhídrido de ácido ftálico correspondiente a especificación a través de una descarga lateral de la columna.

公开(公告)号：DE50010982D1

公开(公告)日：2005-09-22

申请号：DE50010982

申请日：2000-08-10

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESSLING BERND ,  REUTER PETER ,  LORZ MICHAEL ,  ULRICH BERNHARD ,  KNAB WERNER ,  KUMMER MATTHIAS ,  RUEHL 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：DE50005821D1

公开(公告)日：2004-04-29

申请号：DE50005821

申请日：2000-12-22

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  SEUBERT ROLF ,  ULRICH BERNHARD ,  WUNSCHMANN HELMUT

IPC: B01F23/10 ,  B01F3/04 ,  B01F5/04

Abstract: A process and an apparatus for producing a homogeneous mixture of a gaseous aromatic hydrocarbon and an oxygen-containing gas for catalytic gas-phase reactions, in particular a homogeneous mixture of gaseous o-xylene and/or naphthalene and air for preparing phthalic anhydride, are provided. The liquid aromatic hydrocarbon is atomized to form droplets having a diameter of less than 1 mm and injected into an oxygen-containing gas stream (12) preheated to above the boiling point of the aromatic hydrocarbon. According to the invention, the liquid aromatic hydrocarbon is atomized by means of nozzles (15) which form a hollow cone (16), preferably by means of swirl nozzles. The o-xylene/air mixture is advantageously produced in a chamber which is bounded by side walls (18) heated to above the boiling point of the hydrocarbon.

公开(公告)号：DE59808069D1

公开(公告)日：2003-05-28

申请号：DE59808069

申请日：1998-02-12

Applicant: BASF AG

Inventor： HEIDEMANN THOMAS ,  CIMNIAK THOMAS ,  ULRICH BERNHARD

IPC: B01J21/06 ,  B01J23/22 ,  B01J37/02 ,  C07C51/255 ,  C07C51/265 ,  C07C51/31 ,  C07C63/16

Abstract: The invention relates to a method for producing gas-phase catalysts gas-phase oxidation of aromatic hydrocarbons into carboxylic acids and/or carboxylic acid anhydrides upon whose carrier material a coating containing catalytically active metal oxide is applied in the form of a shell, wherein a powder is initially produced from a solution and/or suspension of catalytically active metal oxides and the precursor compounds thereof or simply the precursor compounds in the presence or absence of auxiliary agents in order to produce the catalyst. Said powder is then applied, in the form of a shell, to the carrier in the presence or absence of auxiliary agents after or without previous conditioning and without previous thermal treatment to produce the catalyst. The carrier which is thus coated undergoes thermal treatment in order to produce catalytically active metal oxides.

公开(公告)号：AT238099T

公开(公告)日：2003-05-15

申请号：AT98912298

申请日：1998-02-12

Applicant: BASF AG

Inventor： HEFELE GERHARD ,  KRATZER OTTO ,  SCHEIDMEIR WALTER ,  ULRICH BERNHARD

IPC: B01J23/04 ,  B01J23/22 ,  B01J37/02 ,  C07C51/255 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89

Abstract: In a process for preparing phthalic anhydride by catalytic gas-phase oxidation of o-xylene or naphthalene or o-xylene/naphthalene mixtures with a gas comprising molecular oxygen over a coated catalyst comprising an inert, nonporous support material on which a catalytically active composition comprising titanium dioxide and vanadium pentoxide is applied in layer form, a catalyst whose catalytically active composition comprises from 3 to 6% by weight of vanadium pentoxide, calculated as V2O5, from 0.3 to 0.5% by weight of a cesium compound, calculated as Cs, and the remainder to 100% by weight of titanium dioxide in the anatase modification is used in the presence or absence of a coated catalyst, differing therefrom, for the catalytic gas-phase oxidation of o-xylene or naphthalene or o-xylene/naphthalene mixtures and, in the presence of such a second catalyst, the latter is used in a combined bed with the catalyst of the above composition in the reactor.