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公开(公告)号：NO20023515L
公开(公告)日：2002-08-26
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：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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Patent Agency Ranking
公开(公告)号：DE10002795A1
公开(公告)日：2001-08-02
申请号：DE10002795
申请日：2000-01-24
Applicant: BASF AG
Inventor： AUER HEINZ , BESLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , TILL ADRIAN
IPC: C07C51/09 , C07C51/44 , C07C51/48 , C22C14/00 , C22C38/00 , C22C38/42 , C22C38/44 , C07C53/02 , C07C233/01 , B01J19/02
Abstract: The invention concerns a device and a method for obtaining anhydrous or substantially anhydrous formic acid. Said device is partly or totally made of a zirconium-free material. A liquid material of general formula (I) is used as extracting agent, wherein radicals R and R represent alkyl, cycloalkyl, aryl or aralkyl groups or R and R together form with the N atom a heterocyclic five or six-membered ring and in which only one of the radicals is an aryl group and in which R stands for hydrogen or a C1-C4-alkyl group. The device comprises the following: (i) a synthesis reactor (6); (ii) a hydrolysis reactor (1); (iii) a first distillation device (2); (iv) a second distillation device (4); (v) an extraction device (3) and (vi) a third distillation device (5).
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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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公开(公告)号：DE10002794A1
公开(公告)日：2001-07-26
申请号：DE10002794
申请日：2000-01-24
Applicant: BASF AG
Inventor： ADRIAN TILL , AUER HEINZ , BESLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN
IPC: B01J14/00 , C07C27/02 , C07C51/09 , C07C51/44 , C07C51/48 , C07C53/02 , C07C51/42 , C07C27/26 , C02F1/16
Abstract: In the production of anhydrous formic acid by hydrolysis of methyl formate followed by steam distillation, extraction of the bottom product and further distillation stages, the steam used for steam distillation is used before this for stripping the aqueous phase which is discharged from the extraction stage. A process for the production of (essentially) anhydrous formic acid (FA) involves: (i) hydrolysis of methyl formate (MF), (ii) distillation of methanol and excess MF from the hydrolysis mixture with injection of steam into the bottom of the distillation column, (iii) liquid-liquid extraction of the bottom product with an extractant (I) for formic acid, some of the resulting aqueous phase being discharged as effluent, (iv) distillation of the extract, (v) recycling the top product from (iv) (containing water and some FA) to the lower part of the distillation column used in stage (ii), (vi) separation of the bottom product from (iv) into anhydrous FA and extractant (I) by distillation, and (vii) recycling (I) into the process from stage (vi). In this process, the steam injected in stage (ii) is used before this as waste water stripping steam to treat the aqueous phase discharged from stage (iii). An Independent claim is also included for the apparatus used for this process, comprising a synthesis reactor (6), a hydrolysis reactor (1), a distillation column (2) for stage (ii), a distillation column (4) for stage (iv), an extractor (3), a distillation column (5) for stage (vi) and a waste water stripper (10).
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公开(公告)号：DE10002791A1
公开(公告)日：2001-07-26
申请号：DE10002791
申请日：2000-01-24
Applicant: BASF AG
Inventor： ADRIAN TILL , AUER HEINZ , BESLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN
Abstract: Production of anhydrous formic acid, by hydrolyzing methyl formate and distilling off methanol and unreacted methyl formate, before extracting formic acid with a selective solvent, comprises introducing methanol-containing methyl formate into the distillation column at a point between the methanol and methyl formate withdrawal points, and recycling the resulting methanol-depleted methyl formate to the hydrolysis step. Production of anhydrous formic acid comprises: (a) hydrolyzing methyl formate; (b) distilling the hydrolysis mixture to remove methanol and unreacted methyl formate; (c) introducing methanol-containing methyl formate into the distillation column at a point above the methanol withdrawal point and below the methyl formate withdrawal point; (d) recycling the methyl formate to step (a); (e) extracting formic acid from the distillation bottoms stream with a selective solvent; (f) distilling the extract to obtain a water-rich overhead stream and a bottoms stream comprising formic acid and solvent; (g) recycling the overhead stream to the bottom of the distillation column in step (b); (h) distilling the bottoms stream from step (f) to obtain an anhydrous formic acid stream and a solvent stream; and (i) recycling the solvent stream to step (e). An Independent claim is also included for apparatus for carrying out the process, comprising a synthesis reactor, a hydrolysis reactor, an extractor, and distillation columns for performing steps (b), (f) and (h).
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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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