公开(公告)号：ES2152557T3

公开(公告)日：2001-02-01

申请号：ES96929290

申请日：1996-08-21

Applicant: BASF AG

Inventor： BORGEL FRANZ ,  MULLER ROLF ,  KROKOSZINSKI ROLAND

IPC: B01J31/24 ,  C07B61/00 ,  C07C45/50 ,  C07C47/02

Abstract: PCT No. PCT/EP96/03665 Sec. 371 Date May 29, 1998 Sec. 102(e) Date May 29, 1998 PCT Filed Aug. 21, 1996 PCT Pub. No. WO97/07086 PCT Pub. Date Feb. 27, 1997A process for the purification of a substantially liquid effluent containing aldehydes and unconverted olefins coming from a hydroformylation reactor following low-pressure hydroformylation of C2-C20 olefins or olefin mixtures containing different isomers of the respective olefins, said hydroformylation being catalyzed by means of a phosphorous rhodium catalyst homogeneously dissolved in the reaction medium and carried out at a temperature of from 50 DEG to 150 DEG C. and a pressure of from 2 to 30 bar.

公开(公告)号：DE102004054047A1

公开(公告)日：2006-05-11

申请号：DE102004054047

申请日：2004-11-05

Applicant: BASF AG

Inventor： SIRCH TILMAN ,  TEBBEN GERD-DIETER ,  HECK LUDWIG E ,  DIEFENBACHER ARMIN ,  KRAUSE ALFRED ,  BORGEL FRANZ

IPC: C07C31/20 ,  C07C27/04

Abstract: The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-containing gases and by water extraction of the reaction mixture, by esterification of the acids and hydrogenation, in which a) the mono- and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) a separation of the bottom product is carried out in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, d) the ester fraction substantially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) 1,6-hexanediol is obtained in a purifying distillation stage from the hydrogenation effluent while removing an alcohol-low boiler mixture in a manner known per se, wherein alcohol is removed by a membrane system from the mixtures, obtained after the esterification in stage b) and/or after the hydrogenation in stage e), of alcohols and low boilers and recycled into the esterification.

公开(公告)号：CA2547261A1

公开(公告)日：2006-05-11

申请号：CA2547261

申请日：2005-10-27

Applicant: BASF AG

Inventor： TEBBEN GERD-DIETER ,  DIEFENBACHER ARMIN ,  KRAUSE ALFRED ,  HECK LUDWIG E ,  BORGEL FRANZ ,  SIRCH TILMAN

IPC: C07C29/149 ,  C07C31/20

Abstract: The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-containing gases and by water extraction of the reaction mixture, by esterification of the acids and hydrogenation, in which a) the mono- and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) a separation of the bottom product is carried out in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, d) the ester fraction substantially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) 1,6-hexanediol is obtained in a purifying distillation stage from the hydrogenation effluent while removing an alcohol-low boiler mixture in a manner known per se, wherein alcohol is removed by a membrane system from the mixtures, obtained after the esterification in stage b) and/or after the hydrogenation in stage e), of alcohols and low boilers and recycled into the esterification.

公开(公告)号：MY137827A

公开(公告)日：2009-03-31

申请号：MYPI20054914

申请日：2005-10-19

Applicant: BASF AG

Inventor： SIRCH TILMAN ,  TEBBEN GERD-DIETER DR ,  HECK LUDWIG E ,  DIEFENBACHER ARMIN DR ,  KRAUSE ALFRED DR ,  BORGEL FRANZ

Abstract: 1 7 PREPARATION OF 1,6-HEXANEDIOL ABSTRACT 5 THE PRESENT INVENTION PROVIDES A PROCESS FOR PREPARING 1,6-HEXANEDIOL FROM A CARBOXYLIC ACID MIXTURE WHICH COMPRISES ADIPIC ACID, 6-HVBROXYCAPROIC ACID AND SMALL AMOUNTS OF 11,4-CYCLOHEXANCCLIOLS AND IS OBTAINED AS A BY-PRODUCT IN THE OXIDATION OF CYCLOHEXANE TO CVCLOHEXANONELCYCLOHEXANOL WITH OXYGEN OR OXVGCN-CONTAININO CASES AND BY %,ALEI EXTRACTION OL THE REACTION MIXTURE, BY ESIERILICATION OF ZHE ACIDS AND 10 HYDROGENATION, IN WHICH A) THE MONO- AND DICARBOXYLIC ACIDS PRESENT IN THE AQUEOUS DICARBOXYLIC ACID MIXTURE ARE REACTED WITH A LOW MOLECULAR WEIGHT ALCOHOL TO GIVE THE CORRESPONDING C@RBOXYLIC ESTERS, 1 5 B) THE RESULTING ESTERIFICATION MIXTURE IS FREED OF EXCESS ALCOHOL AND LOW BOILERS IN A FIRST DISTILLATION STAGE, C) A SEPARATION OF THE BOTTOM PRODUCT IS CARRIED OUT IN A SECOND DISTILLATION STAGE INTO 20 AN ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANECLIOLS AND A FRACTION COMPRISING AT LEAST THE MAJORITY OF THE 1,4-CYCLOHEXANEDIOLS, D) THE ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS IS CATAL ICALLY YT HYDROGENATED AND 25 E) 1,6-HEXANEDIAL IS OBTAINED IN A PURIFYING DISTILLATION STAGE FROM THE HYDROGENATION EFFLUENT WHILE REMOVING AN ALCOHOL-LOW BOILER MIXTURE IN A MANNER KNOWN PER SE, WHEREIN ALCOHOL IS REMOVED BY A MEMBRANE SYSTEM FROM THE MIXTURES, OBTAINED AFTER THE ESTERIFICATION IN STAGE B) AND/OR AFTER THE HYDROGENATION IN STAGE E), OF 30 ALCOHOLS AND LOW BOILERS AND RECYCLED INTO THE ESTERIFICATION. Z)OAM4 I Q /I O/O@-

公开(公告)号：DE59606052D1

公开(公告)日：2000-11-30

申请号：DE59606052

申请日：1996-08-21

Applicant: BASF AG

Inventor： BORGEL FRANZ ,  MUELLER ROLF ,  KROKOSZINSKI ROLAND

IPC: B01J31/24 ,  C07B61/00 ,  C07C45/50 ,  C07C47/02

Abstract: PCT No. PCT/EP96/03665 Sec. 371 Date May 29, 1998 Sec. 102(e) Date May 29, 1998 PCT Filed Aug. 21, 1996 PCT Pub. No. WO97/07086 PCT Pub. Date Feb. 27, 1997A process for the purification of a substantially liquid effluent containing aldehydes and unconverted olefins coming from a hydroformylation reactor following low-pressure hydroformylation of C2-C20 olefins or olefin mixtures containing different isomers of the respective olefins, said hydroformylation being catalyzed by means of a phosphorous rhodium catalyst homogeneously dissolved in the reaction medium and carried out at a temperature of from 50 DEG to 150 DEG C. and a pressure of from 2 to 30 bar.

公开(公告)号：DE19530698A1

公开(公告)日：1997-02-27

申请号：DE19530698

申请日：1995-08-21

Applicant: BASF AG

Inventor： BORGEL FRANZ ,  MUELLER ROLF ,  KROKOSZINSKI ROLAND DR

IPC: B01J31/24 ,  C07B61/00 ,  C07C45/50 ,  C07C47/02 ,  C07C45/78 ,  C07C45/81

Abstract: A process is disclosed for recycling a substantially liquid discharge that contains aldehydes and non-reacted olefins from a hydroformylation reactor in which C2-C20 olefins or olefin mixtures of various isomers of said olefins are hydroformylated at 50 to 150 DEG C and 2 to 30 bars with a phosphorated rhodium-catalyst homogeneously dissolved in the reaction medium. The process has the following steps: (a) the liquid and gaseous component-containing hydroformylation discharge, that besides the catalyst substantially contains the hydroformylation product, by-products with a higher boiling temperature than the hydroformylation product, non-reacted olefin, saturated hydrocarbons and non-reacted synthesis gas, is expanded in a flash vessel; (b) pressure and temperature drop during expansion until a liquid phase is produced that substantially contains the catalyst, by-products with a higher boiling point than the hydroformylation product and residual amounts of hydroformylation product and non-reacted olefin, as well as a gaseous phase that contains non-reacted olefin, saturated hydrocarbons and non-reacted synthesis gas; (c) a liquid stream is withdrawn from the thus obtained liquid phase and a gaseous stream is withdrawn from the thus obtained gaseous phase; (d) the liquid stream is heated up to a temperature higher than the temperature in the flash vessel; (e) the heated liquid stream flows as a liquid into the head of a column; (f) the gaseous stream withdrawn from the flash vessel flows into the lower part of said column, in the opposite direction to the liquid stream that flows into the head of said column; (g) a gaseous stream enriched with olefin and hydroformylation product is withdrawn from the column head and further processed; (h) a liquid stream that contains less hydroformylation product and olefin than the liquid stream produced at the column head is withdrawn from the column bottom; and (i) this liquid stream is totally or partially returned to the hydroformylation reactor.