公开(公告)号：FI853437L

公开(公告)日：1986-03-13

申请号：FI853437

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02 ,  C07D

公开(公告)号：FI853436L

公开(公告)日：1986-03-13

申请号：FI853436

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH

IPC: C07D307/89 ,  C07C51/573 ,  C07D307/60 ,  F28C3/02 ,  C07D

Abstract: The temperature of the exit gas from the gas washer in the preparation of phthalic anhydride by catalytic oxidation of naphthalene or o-xylene with air is increased by a method in which flue gas from the combustion furnace for residues is mixed with the exit gas before the latter emerges into the atmosphere.

公开(公告)号：NO801034L

公开(公告)日：1980-10-13

申请号：NO801034

申请日：1980-04-10

Applicant: BASF AG

Inventor： WOLF DIETER ,  SCHMIDT RUDOLF ,  BLOCK ULRICH ,  SCHOENMAKERS HARTMUT ,  BOTT KASPAR ,  KAIBEL GERD

IPC: C07C27/02 ,  C07C53/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00 ,  C07C

Abstract: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein (a) methyl formate is hydrolyzed, (b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, (c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, (d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, (e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), (f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and (g) the extractant leaving stage (f) is recycled to the process.

公开(公告)号：DE50009219D1

公开(公告)日：2005-02-17

申请号：DE50009219

申请日：2000-01-29

Applicant: BASF AG

Inventor： DITRICH KLAUS ,  BLOCK ULRICH

IPC: C07B61/00 ,  C07C51/48 ,  C07C59/125 ,  C07C67/08 ,  C07C67/54 ,  C07C69/708

Abstract: The present invention relates to a novel process for the preparation of esters of the general formula Ifrom compounds of the general formula II contained in aqueous solutionswhich comprisesa) extracting the compounds of the general formula II directly or after liberation from their salts in the presence of a C1-C8-alcohol and a water-immiscible solvent andb) then esterifying with the C1-C8-alcohol in the presence of a catalyst and of an entraining agent under the conditions of an azeotropic distillation,where the process steps (a) and (b) can be carried out separately in terms of time and space or else in a successive continuous or batchwise sequence and where the variables and substituents in the formulae I and II have the following meanings:R =F, Cl, -OH, -OC1-C10-alkyl,R =H, C1-C10-alkyl;R =C1-C8-alkyl,Q=-OH, -O K , where K is an alkali metal cation or alkaline earth metal cation,n=0, 1 or 2.

公开(公告)号：CA1235131A

公开(公告)日：1988-04-12

申请号：CA490421

申请日：1985-09-11

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

Abstract: In apparatuses for the preparation of phthalic anhydride and/or maleic anhydride by catalytic oxidation of naphthalene or o-xylene with air, reduced pressure is generated using liquid-jet pumps, and wash liquid is removed from the exit gas washer as a pump fluid for the liquid-jet pumps and is subsequently recycled to the exit gas washer.

公开(公告)号：NO152371C

公开(公告)日：1985-09-18

申请号：NO801034

申请日：1980-04-10

Applicant: BASF AG

Inventor： WOLF DIETER ,  SCHMIDT RUDOLF ,  BLOCK ULRICH ,  SCHOENMAKERS HARTMUT ,  BOTT KASPAR ,  KAIBEL GERD

IPC: C07C27/02 ,  C07C51/00 ,  C07C53/02 ,  C07C51/09 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00

Abstract: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein (a) methyl formate is hydrolyzed, (b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, (c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, (d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, (e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), (f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and (g) the extractant leaving stage (f) is recycled to the process.

公开(公告)号：CA1135282A

公开(公告)日：1982-11-09

申请号：CA348294

申请日：1980-03-24

Applicant: BASF AG

Inventor： WOLF DIETER ,  SCHMIDT RUDOLF ,  BLOCK ULRICH ,  SCHOENMAKERS HARTMUT ,  BOTT KASPAR ,  KAIBEL GERD

IPC: C07C53/02 ,  C07C27/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00

Abstract: of the disclosure: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein a) methyl formate is hydrolyzed, b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and e) the extractant leaving stage (f) is recycled to the process.

公开(公告)号：AU5729680A

公开(公告)日：1980-10-16

申请号：AU5729680

申请日：1980-04-10

Applicant: BASF AG

Inventor： WOLF DIETER ,  SCHOENMAKERS HARTMUT ,  BOTT KASPAR ,  KAIBEL GERD ,  SCHMIDT RUDOLF ,  BLOCK ULRICH

IPC: C07C53/02 ,  C07C27/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00

Abstract: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein (a) methyl formate is hydrolyzed, (b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, (c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, (d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, (e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), (f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and (g) the extractant leaving stage (f) is recycled to the process.

公开(公告)号：AT286870T

公开(公告)日：2005-01-15

申请号：AT00904982

申请日：2000-01-29

Applicant: BASF AG

Inventor： DITRICH KLAUS ,  BLOCK ULRICH

IPC: C07B61/00 ,  C07C51/48 ,  C07C59/125 ,  C07C67/08 ,  C07C67/54 ,  C07C69/708

Abstract: The present invention relates to a novel process for the preparation of esters of the general formula Ifrom compounds of the general formula II contained in aqueous solutionswhich comprisesa) extracting the compounds of the general formula II directly or after liberation from their salts in the presence of a C1-C8-alcohol and a water-immiscible solvent andb) then esterifying with the C1-C8-alcohol in the presence of a catalyst and of an entraining agent under the conditions of an azeotropic distillation,where the process steps (a) and (b) can be carried out separately in terms of time and space or else in a successive continuous or batchwise sequence and where the variables and substituents in the formulae I and II have the following meanings:R =F, Cl, -OH, -OC1-C10-alkyl,R =H, C1-C10-alkyl;R =C1-C8-alkyl,Q=-OH, -O K , where K is an alkali metal cation or alkaline earth metal cation,n=0, 1 or 2.

公开(公告)号：MXPA02005852A

公开(公告)日：2002-10-23

申请号：MXPA02005852

申请日：2000-12-22

Applicant: BASF AG

Inventor： BLOCK ULRICH

IPC: B01F23/10

Abstract: Se proporcionan un proceso y un aparato para producir una mezcla homogenea de hidrocarburo aromatico gaseoso y un gas que contiene oxigeno para reacciones en fase gaseosa cataliticas, en particular una mezcla homogenea de o-xileno gaseoso y/o naftaleno y aire para preparar anhidrido ftalico. El hidrocarburo aromatico liquido se atomiza para formar gotas que tienen un diametro menor de 1 mm y que se inyectan dentro de una corriente de gas (12) que contiene oxigeno, precalentada por arriba del punto de ebullicion del hidrocarburo aromatico. De acuerdo con la invencion, el hidrocarburo aromatico se- atomiza por medio de boquillas (15) que forman un cono hueco (16), preferiblemente por medio de boquillas de turbulencia. La mezcla de o~xileno/aire se produce ventajosamente en una camara que se une por paredes laterales (18) calentadas por arriba del punto de ebullicion del hidrocarburo.