公开(公告)号：AT382409T

公开(公告)日：2008-01-15

申请号：AT06763994

申请日：2006-06-30

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  BENDER BIANCA ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: B01D3/34 ,  B01D53/14

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：ES2287496T3

公开(公告)日：2007-12-16

申请号：ES03743348

申请日：2003-02-28

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  ROSCH MARKUS ,  BOTTKE NILS ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HESSE MICHAEL

IPC: C07D207/26 ,  B01J23/72 ,  B01J23/80 ,  C07B61/00 ,  C07D207/267 ,  C07D307/08

Abstract: Procedimiento para la obtención simultánea de THF, en caso dado substituido por alquilo, y pirrolidonas mediante hidrogenación catalítica de ácidos dicarboxílicos con 4 átomos de carbono y/o sus derivados en fase gaseosa en presencia de catalizadores que contienen cobre y conversión de la GBL con amoníaco o con aminas primarias para dar pirrolidonas, caracterizado porque a) se hidrogenan ácidos dicarboxílicos con 4 átomos de carbono y/o sus derivados en fase gaseosa a 200 hasta 300ºC, a 0, 1 hasta 100 bares, con cargas del catalizador desde 0, 01 hasta 1 kg de educto/l de catalizador * hora y con proporciones en moles entre educto/hidrógeno de 20 hasta 800 en presencia de catalizadores soportados, que contienen 30 % en peso de material de soporte, elegido entre óxido de aluminio u óxido de aluminio y óxido de cinc, para dar mezclas constituidas por THF y GBL, b) la descarga de la hidrogenación obtenida se separa, mediante destilación, en una mezcla de THF/agua como producto de cabeza y un producto de cola que contiene la GBL, c) la mezcla de THF/agua, procedente de la etapa b), se separa en una instalación de destilación constituida por tres columnas, separándose agua de la cola de la primera columna, reciclándose THF acuoso desde la segunda columna hasta la primera columna, conduciéndose una corriente lateral desde la primera columna hasta la segunda columna, reciclándose el producto de cola desde la tercera columna hasta la primera columna, retirándose por la cabeza de la primera columna un destilado, conduciéndose una descarga lateral desde la segunda columna hasta la tercera columna y obteniéndose el THF puro como producto de cabeza en la tercera columna, d) el producto de cola procedente de la etapa b), que contiene la GBL, se hace reaccionar con amoníaco o con aminas para dar las pirrolidonas correspondientes.

公开(公告)号：DE102006024903A1

公开(公告)日：2007-11-29

申请号：DE102006024903

申请日：2006-05-24

Applicant: BASF AG

Inventor： PINKOS ROLF ,  KAIBEL GERD ,  DAHLHOFF ELLEN ,  WINDECKER GUNTHER ,  HEIMANN JENS

IPC: C07D307/60 ,  C07C55/10

Abstract: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps: a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent, b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent, the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).

公开(公告)号：DE50300824D1

公开(公告)日：2005-08-25

申请号：DE50300824

申请日：2003-02-28

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER

IPC: B01D3/14 ,  C07D307/08

Abstract: Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.

公开(公告)号：DE10357716A1

公开(公告)日：2005-07-14

申请号：DE10357716

申请日：2003-12-09

Applicant: BASF AG

Inventor： ROESCH MARKUS ,  PINKOS ROLF ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  SCHUBERT OLGA ,  WINDECKER GUNTHER ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J35/02 ,  B01J37/00 ,  B01J37/03 ,  C07D307/08 ,  C07D307/33 ,  B01J35/10

公开(公告)号：DE10351697A1

公开(公告)日：2005-06-09

申请号：DE10351697

申请日：2003-11-05

Applicant: BASF AG

Inventor： ROESCH MARKUS ,  PINKOS ROLF ,  JUNICKE HENRIK ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  WECK ALEXANDER ,  WINDECKER GUNTHER

IPC: C07C29/149 ,  C07C31/20 ,  B01J23/72

公开(公告)号：AU2003293663A1

公开(公告)日：2004-06-03

申请号：AU2003293663

申请日：2003-11-06

Applicant: BASF AG

Inventor： SCHUBERT MARKUS ,  HUBER-DIRR SYLVIA ,  HESSE MICHAEL ,  PFEIFER JOCHEN ,  FISCHER ROLF-HARTMUTH ,  ROSCH MARKUS ,  BOTTKE NILS ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

IPC: B01J23/656 ,  B01J37/02 ,  C07B41/02 ,  C07C29/149 ,  C07C29/17 ,  B01J23/42

Abstract: A supported catalyst (I) containing 0.1-20 wt.% rhenium and 0.05-10 wt.% platinum (with respect to the total weight of the catalyst) is prepared by: (a) treatment of the optionally pretreated support with a solution of a rhenium compound; (b) drying and heating in a reducing atmosphere at 80-600 degreesC and; (c) impregnation with a solution of a platinum compound and drying. An Independent claim is also included for a process for the production of alcohols by catalytic hydrogenation of carbonyl compounds using the catalyst (I).

公开(公告)号：DE10225929A1

公开(公告)日：2003-12-24

申请号：DE10225929

申请日：2002-06-11

Applicant: BASF AG

Inventor： ROESCH MARKUS ,  HESSE MICHAEL ,  SCHLITTER STEPHAN MARCEL ,  BOTTKE NILS ,  FISCHER ROLF HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  BORCHERT HOLGER ,  SCHUBERT MARKUS

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C29/132 ,  C07D307/20 ,  C07D307/32

Abstract: Optionally alkyl-substituted 1,4-butanediol is prepared from C 4 -dicarboxylic acids and/or of derivatives thereof by: a) introducing a gas stream of the C 4 -dicarboxylic acid or the derivative thereof in a first reactor in the gas phase to obtain a product which contains mainly optionally alkyl-substituted gamma-butyro-lactone; b) removing succinic anhydride from the product of step a); c) catalytically hydrogenating the product of step b) in a second reactor in the gas phase to obtain optionally alkyl-substituted 1,4-butanediol; d) removing the desired product from intermediates, by-products and any unconverted reactants; and e) optionally recycling unconverted intermediates into one or both hydrogenation stages. The catalysts employed in each of the hydrogenation stages comprise

公开(公告)号：AU2003274707A1

公开(公告)日：2003-12-22

申请号：AU2003274707

申请日：2003-06-10

Applicant: BASF AG

Inventor： BOTTIKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROSCH MARKUS

IPC: B01J23/80 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20

Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 2 to 60 bar into a first reactor and catalytically hydrogenating it to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) converting the product stream into the liquid phase; c) introducing the product stream obtained in this way into a second reactor at a temperature of from 100° C. to 240° C. and a pressure of from 20 to 250 bar and catalytically hydrogenating it in the liquid phase to optionally alkyl-substituted 1,4-butanediol; d) removing the desired product from by-products and any unconverted reactants; e) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages both using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of a support, said second reactor having a higher pressure than said first reactor, and the product mixture removed from said first reactor being introduced without further purification into said second reactor.

公开(公告)号：AU2003238491A1

公开(公告)日：2003-12-22

申请号：AU2003238491

申请日：2003-06-10

Applicant: BASF AG

Inventor： HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROSCH MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

IPC: C07C29/149 ,  C07D315/00 ,  C07D307/33 ,  C07C31/20

Abstract: The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.