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公开(公告)号:ES2153291A1
公开(公告)日:2001-02-16
申请号:ES9801411
申请日:1998-07-03
Applicant: BASF AG
Inventor: BESSLING BERND , KNAB JEAN WERNER , WELKER RUDIGER , DISTELDORF WALTER
IPC: B01J31/08 , B01D3/00 , B01D3/14 , B01J8/04 , B01J19/24 , B01J19/32 , C07B61/00 , C07C67/08 , C07C67/54 , C07C69/14 , C07C69/16
Abstract: Procedimiento para la obtención de ésteres a partir de alcohol y de ácido carboxílico mediante a) la alimentación de una mezcla, que comprende al menos alcohol y/o ácido carboxílico en forma de educto, en una columna de destilación que presenta secciones separadas, que comprenden inserciones reactivas y convencionales, estando dispuestas las inserciones reactivas por debajo de la entrada de la mezcla y las inserciones convencionales por encima de la entrada de la mezcla, b) la reacción del alcohol y del ácido carboxílico en las inserciones reactivas en presencia de un catalizador, c) la separación por destilación de las mezcla de la reacción en éster de elevado punto de ebullición y azeótropo de bajo punto de ebullición, que contiene alcohol, agua y éster, acumulándose el éster en la cola y el azeótropo es separado por la cabeza, d) la separación del azeótropo en un separador de fases en una fase acuosa y en una fase orgánica y la fase orgánica se envía de nuevo hasta la cabeza de la columna, utilizándose en la etapa b) un catalizador heterogéneo y en la etapa c) el éster es retirado por encima de la cola en forma de producto puro entre otras inserciones convencionales que difieren en su disposición de la de la etapa a) y que están dispuestas por encima de la entrada de un evaporador con circulación.
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公开(公告)号:NO327827B1
公开(公告)日:2009-10-05
申请号:NO20023514
申请日:2002-07-23
Applicant: BASF AG
Inventor: AUER HEINZ , HAMMER HANS , BESSLING BERND , HASSE HANS , SAUER FRIEDRICH , ADRIAN TILL , VICARI MAXIMILIAN
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that-before the hydrolysis of the methyl formate-the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.
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公开(公告)号:PL196671B1
公开(公告)日:2008-01-31
申请号:PL34675299
申请日:1999-09-21
Applicant: BASF AG
Inventor: ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS , THEIS GERHARD
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公开(公告)号:PL195588B1
公开(公告)日:2007-10-31
申请号:PL34758099
申请日:1999-09-21
Applicant: BASF AG
Inventor: THEIS GERHARD , ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS
Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.
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15.
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.
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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.
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公开(公告)号:DE59907884D1
公开(公告)日:2004-01-08
申请号:DE59907884
申请日:1999-09-21
Applicant: BASF AG
Inventor: THEIS GERHARD , ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS
Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.
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公开(公告)号:BE1014031A3
公开(公告)日:2003-03-04
申请号:BE9800494
申请日:1998-06-30
Applicant: BASF AG
Inventor: BESSLING BERND , LOHE BERND , WELKER RUEDIGER , DISTELDORF WALTER , KNAB JEAN WERNER
IPC: B01J31/08 , B01D3/00 , B01D3/14 , B01J8/04 , B01J19/24 , B01J19/32 , C07B61/00 , C07C67/08 , C07C67/54 , C07C69/14 , C07C69/16
Abstract: Procédé de préparation d'esters à partir d'alcool et d'acide carboxylique par a) l'introduction d'un mélange comprenant au moins de l'alcool et/ou de l'acide carboxilique à titre de matières de départ dans une colonne de distillation comportant des sections séparées contenant des composants réactifs et des composants classiques, où les composants réactifs sont agencés en dessous de l'entrée du mélange et les composants classiques sont agencés au-dessous de l'entrée du mélange, b) la réaction de l'alcool et de l'acide carboxylique dans les composants réactifs en présence d'un catalyseur, c) la séparation distillative en l'ester à point d'ébullition supérieur et en un azéoptrope à point d'ébullition inférieur contenant alcool, eau et ester, où l'ester s'accumule au fond et l'azétrope est évacué en tête, d) la séparation de l'azétrope dans un séparateur de phases en une phase aqueuse et une phase organique et le renvoi de la phase organique au sommet de la colonne, où, au cours de l'étape b) on utilise un catalyseur hétérogène et, au cours de l'étape c)
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公开(公告)号:BR0107825A
公开(公告)日:2002-10-29
申请号:BR0107825
申请日:2001-01-12
Applicant: BASF AG
Inventor: AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , ADRIAN TILL
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.
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公开(公告)号:NO20023515L
公开(公告)日:2002-08-26
申请号:NO20023515
申请日:2002-07-23
Applicant: BASF AG
Inventor: AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
Abstract: The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially zirconium-free materials. The extractant employed is a liquid of the general formula I where the radicals R 1 and R 2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R 1 and R 2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R 3 is hydrogen or a C 1 -C 4 -alkyl group. The apparatus has a synthesis reactor ( 6 ), a hydrolysis reactor ( 1 ), three distillation devices ( 2,4,5 ) and an extraction device ( 3 ).
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