-
公开(公告)号：NO327827B1
公开(公告)日：2009-10-05
申请号：NO20023514
申请日：2002-07-23
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 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.
-
公开(公告)号：PL196671B1
公开(公告)日：2008-01-31
申请号：PL34675299
申请日：1999-09-21
Applicant: BASF AG
Inventor： ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS , THEIS GERHARD
-
公开(公告)号：PL195588B1
公开(公告)日：2007-10-31
申请号：PL34758099
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vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.
-
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
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：DE59907884D1
公开(公告)日：2004-01-08
申请号：DE59907884
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.
-
Patent Agency Ranking
公开(公告)号：AU2003233194A1
公开(公告)日：2003-11-17
申请号：AU2003233194
申请日：2003-04-29
Applicant: BASF AG
Inventor： ADRIAN TILL , HEIDA BERND , KINDLER KLAUS
Abstract: A continuous process for isolating butenes from a C 4 fraction comprising butanes, butenes and other C 3 -C 5 -hydrocarbons by extractive distillation using a selective solvent (LM), comprising a first process stage I in a scrubbing zone (E) and a second process stage II in a degassing zone (A), wherein the liquid or a substream of the liquid is taken off from the degassing zone (A) at a theoretical plate located one or more theoretical plates below the feed point for the bottom stream (LM/C 4 H 8 ) from the scrubbing zone (E), heated and/or vaporized by indirect heat exchange with the hot bottom stream (LM) from the degassing zone (A) and returned to the degassing zone (A) at the same theoretical plate or above this, with the theoretical plate from which the liquid or substream of liquid is taken off being selected so that the total energy requirement in the process stages I and II is minimized, is proposed.
-
公开(公告)号：HU0302011A2
公开(公告)日：2003-09-29
申请号：HU0302011
申请日：2001-05-09
Applicant: BASF AG
Inventor： ADRIAN TILL , BOHNER GERD , HILL THOMAS , KAIBEL GERD , KINDLER KLAUS , MEYER GERALD , PAHL MELANIE , PICKENAECKER KARIN
IPC: C07C7/08 , B01D3/14 , B01D3/40 , C07C5/09 , C07C7/00 , C07C11/167 , C10G7/08 , C10G70/00 , C10G70/02
Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.
-
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
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：CZ20023681A3
公开(公告)日：2003-04-16
申请号：CZ20023681
申请日：2001-05-09
Applicant: BASF AG
Inventor： MEYER GERALD , KAIBEL GERD , BOHNER GERD , KINDLER KLAUS , ADRIAN TILL , PICKENACKER KARIN , PAHL MELANIE , HILL THOMAS
IPC: C07C7/08 , B01D3/14 , B01D3/40 , C07C5/09 , C07C7/00 , C07C11/167 , C10G7/08 , C10G70/00 , C10G70/02 , C07C7/163
Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.
-
公开(公告)号：BR0107825A
公开(公告)日：2002-10-29
申请号：BR0107825
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 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.
-
-
-
-
-
-
-
-
-
Search Results
90
records
(took 0.026 seconds)
