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公开(公告)号：NO20023513A
公开(公告)日：2002-08-26
申请号：NO20023513
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
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公开(公告)号：NO20023514L
公开(公告)日：2002-08-22
申请号：NO20023514
申请日：2002-07-23
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 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：NO20023515D0
公开(公告)日：2002-07-23
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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公开(公告)号：NO20023481D0
公开(公告)日：2002-07-22
申请号：NO20023481
申请日：2002-07-22
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：AU4233301A
公开(公告)日：2001-07-31
申请号：AU4233301
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 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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Patent Agency Ranking
公开(公告)号：BR9913889A
公开(公告)日：2001-07-03
申请号：BR9913889
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：CA2233209A1
公开(公告)日：1997-05-29
申请号：CA2233209
申请日：1996-11-05
Applicant: BASF AG
Inventor： AUER HEINZ , TERJUNG WINFRIED , ZECK SEBASTIAN , HILPRECHT LUTZ , BRUDI GERHARD , GIESELBERG KLAUS , BALLENWEG RUBENS , SPIEGEL GUENTER , BESSLING BERND , L FFLER ULRICH , SCHOLL STEPHAN , MAYER THOMAS , POLT AXEL WERNER , PLUECKHAN JUERGEN
IPC: B01D3/00 , B01D3/16 , C07D301/32 , C07D303/02 , C07D303/04
Abstract: A process is proposed for distilling ethylene oxide from a mixture containing ethylene oxide in a column at an absolute pressure of 2-10 bar and a temperature of 20-180 ~C; pure ethylene oxide is removed at the top or through a side discharge in the column and distillation takes place in a column divided up internally into a number of successive zones with structured sheet metal packs or piles of fillers, one or more quenching systems located outside the column being allocated to said zones.
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公开(公告)号：NO327886B1
公开(公告)日：2009-10-12
申请号：NO20023480
申请日：2002-07-22
Applicant: BASF AG
Inventor： AUER HEINZ , HAMMER HANS , BESSLING BERND , HASSE HANS , SAUER FRIEDRICH , WAGNER GERHARD , ADRIAN TILL , VICARI MAXIMILIAN
Abstract: The invention relates to a process for the preparation of anhydrous or substantially anhydrous formic acid. The process has the special feature that a liquid of the general formula Iwhere the radicals R and R are alkyl, cycloalkyl, aryl or aralkyl groups, or R and R 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 is hydrogen or a C1-C4-alkyl group, employed as extractant is also employed as washing liquid for the offgases produced in the process.
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公开(公告)号：NO327831B1
公开(公告)日：2009-10-05
申请号：NO20023481
申请日：2002-07-22
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 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：AT255084T
公开(公告)日：2003-12-15
申请号：AT99969405
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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