公开(公告)号：DE502004003404D1

公开(公告)日：2007-05-16

申请号：DE502004003404

申请日：2004-04-05

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  SCHOENMAKERS HARTMUT ,  ALTHAUS KLAUS ,  KIRCHNER TANJA ,  STAATZ HARTMUT

IPC: C07C231/24 ,  C07C233/05

Abstract: The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed hereinbelow: (I) a main column (MC) with sidestream column (SC) or (II) a dividing wall column (DWC), which operating at least the main column (MC) in column configuration (I) and the dividing wall column (DWC) in column configuration (II) at a top pressure in the range from 0.5 to 1.8 bar absolute.

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：PL374274A1

公开(公告)日：2005-10-03

申请号：PL37427403

申请日：2003-02-28

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  ADRIAN TILL ,  RUST HARALD ,  BOETTCHER ARND ,  HILL THOMAS ,  MUELLER ULRICH ,  PAPP RAINER

IPC: C07B61/00 ,  C07C29/04 ,  C07C35/08 ,  C07C5/11 ,  C07C13/20

Abstract: A process for preparing cyclohexanol from benzene by: a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst, and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises: carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end, and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.

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：DK1161413T3

公开(公告)日：2003-12-08

申请号：DK00909259

申请日：2000-02-28

Applicant: BASF AG

Inventor： HEIMANN FRANK ,  PESCHEL WERNER ,  BARTENBACH BERND ,  HARTMANN HORST ,  KEIL MICHAEL ,  WAHL JOSEF

IPC: B01D3/14 ,  B01D3/20 ,  C07C239/20

Abstract: The present invention relates to a process for the continuous preparation of methoxyamine hydrochloride by cleavage of acetone oxime methyl ether by means of hydrogen chloride and water, wherein the cleavage is carried out in a reaction column having less than 20 theoretical plates and the amount taken off at the top is set to at least 30% of the amount of feed.

公开(公告)号：DE10209701A1

公开(公告)日：2003-09-18

申请号：DE10209701

申请日：2002-03-06

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  ADRIAN TILL ,  RUST HARALD ,  BOETTCHER ARND ,  HILL THOMAS ,  MUELLER ULRICH ,  PAPP RAINER

IPC: C07B61/00 ,  C07C29/04 ,  C07C35/08 ,  C07C5/11 ,  C07C29/74

Abstract: A process for preparing cyclohexanol from benzene by: a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst, and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises: carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end, and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.

公开(公告)号：BR0008998A

公开(公告)日：2002-01-08

申请号：BR0008998

申请日：2000-02-28

Applicant: BASF AG

Inventor： HEIMANN FRANK ,  PESCHEL WERNER ,  BARTENBACH BERND ,  HARTMANN HORST ,  KEIL MICHAEL ,  WAHL JOSEF

IPC: B01D3/14 ,  B01D3/20 ,  C07C239/20

Abstract: The present invention relates to a process for the continuous preparation of methoxyamine hydrochloride by cleavage of acetone oxime methyl ether by means of hydrogen chloride and water, wherein the cleavage is carried out in a reaction column having less than 20 theoretical plates and the amount taken off at the top is set to at least 30% of the amount of feed.

公开(公告)号：MX2007008175A

公开(公告)日：2007-08-06

申请号：MX2007008175

申请日：2005-12-31

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  KUMMER MATTHIAS ,  BECHTEL MARCUS

IPC: B01D3/42 ,  C07C51/573 ,  C07D307/89

Abstract: Proceso para la preparacion de anhidrido ftalico segun especificaciones, mediante purificacion por destilacion del anhidrido ftalico crudo a presion reducida, donde el anhidrido ftalico crudo se hace pasar a la columna de destilacion por arriba de un lado de separacion, los componentes de bajo punto de ebullicion se retiran por la parte superior de la columna o en la vecindad de la parte superior de la columna y el anhidrido ftalico segun especificaciones se retira del lado de separacion de la columna, en el que se utiliza una columna de destilacion cuyo numero de las platos teoricos localizados por arriba del suministro de anhidrido ftalico crudo en la columna de destilacion es de 10 a 20 y la columna es opera a una razon de reflujo de desde 0.1 a 0.5.

公开(公告)号：DE102005000957A1

公开(公告)日：2006-07-20

申请号：DE102005000957

申请日：2005-01-07

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  KUMMER MATTHIAS ,  BECHTEL MARCUS

IPC: C07D307/89 ,  B01D3/10

Abstract: Process for the preparation of on-spec phthalic anhydride by the distillative purification of crude phthalic anhydride at reduced pressure, where the crude phthalic anhydride is passed to the distillation column above a side take-off, the low-boiling components are removed at the top of the column or in the vicinity of the top of the column and the on-spec phthalic anhydride is removed from the side take-off of the column, in which a distillation column is used whose number of theoretical plates located above the supply of the crude phthalic anhydride into the distillation column is 10 to 20 and the column is operated at a reflux ratio of from 0.1 to 0.5.

公开(公告)号：ES2204526T3

公开(公告)日：2004-05-01

申请号：ES00909259

申请日：2000-02-28

Applicant: BASF AG

Inventor： HEIMANN FRANK ,  PESCHEL WERNER ,  BARTENBACH BERND ,  HARTMANN HORST ,  KEIL MICHAEL ,  WAHL JOSEF

IPC: B01D3/14 ,  B01D3/20 ,  C07C239/20

Abstract: The present invention relates to a process for the continuous preparation of methoxyamine hydrochloride by cleavage of acetone oxime methyl ether by means of hydrogen chloride and water, wherein the cleavage is carried out in a reaction column having less than 20 theoretical plates and the amount taken off at the top is set to at least 30% of the amount of feed.