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公开(公告)号：NO20023480D0
公开(公告)日：2002-07-22
申请号：NO20023480
申请日：2002-07-22
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 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：AR020655A1
公开(公告)日：2002-05-22
申请号：ARP990104764
申请日：1999-09-22
Applicant: BASF AG
Inventor： BESSLING BERND , HASSE HANS , THEIS GERHARD , ADRIAN TILL , VANSANT FRANS
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公开(公告)号：AU6741901A
公开(公告)日：2001-11-20
申请号：AU6741901
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.
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公开(公告)号：DE10002790A1
公开(公告)日：2001-07-26
申请号：DE10002790
申请日：2000-01-24
Applicant: BASF AG
Inventor： AUER HEINZ , BESLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
Abstract: In the production of anhydrous formic acid (FA) by hydrolysis of methyl formate (MF) followed by distillation, extraction of the bottom product with an amide extractant (I) and further distillation stages, the off-gas streams containing MF and/or methanol and/or FA are washed with (I) which is then returned to the process along with these products in solution. The production of (essentially) anhydrous formic acid (FA) involves: (i) hydrolysis of methyl formate (MF), (ii) removal of methanol and excess MF by distillation, (iii) liquid-liquid extraction of the bottom product with an amide of formula R (R )NC(O)R (I), (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) by distillation into anhydrous FA and extractant (I) and (vii) recycling (I) into the process. In this process, the off-gas streams containing MF and/or methanol and/or FA are washed with extractant (I), which is then returned to the process along with dissolved MF and/or methanol and/or FA. R , R = alkyl, cycloalkyl, aryl or aralkyl, or R plus R plus the linking nitrogen may form a 5- or 6-membered heterocycle, with the proviso that only one of these groups is aryl; R = H or 1-4C alkyl An Independent claim is also included for the apparatus used for this process, comprising a synthesis reactor (6), a hydrolysis reactor (1), a distillation system (2) for stage (ii), a distillation system (4) for stage (iv), an extraction unit (3), a distillation system (5) for stage (vi) and an off-gas scrubber (9).
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公开(公告)号：AU6466399A
公开(公告)日：2000-04-10
申请号：AU6466399
申请日：1999-09-21
Applicant: BASF AG
Inventor： ADRIAN TILL , BESSLING BERND , HASSE HANS , VANSANT FRANS , THEIS GERHARD
Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis product of ethylene oxide by pressure dewatering, vacuum dewatering and subsequent purifying distillation, which includes the pressure dewatering columns or at least the first pressure dewatering column of the battery (2, 3, 4) having a stripping section with at least one separating stage, preferably with from 2 to 10 separating stages, particularly preferably with from 3 to 6 stages, and a portion of the overhead stream of the pressure dewatering column(s) (2, 3, 4) having a stripping section being removed from the system.
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Patent Agency Ranking
公开(公告)号：DE19843697A1
公开(公告)日：2000-03-30
申请号：DE19843697
申请日：1998-09-23
Applicant: BASF AG
Inventor： ADRIAN TILL , BESLING BERND , HASSE HANS , VANSANT FRANS , THEIS GERHARD
Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. During the vacuum dehydration, an aqueous stream containing monoethylene glycol in a concentration of less than 1 wt. %, preferably less than 0.1 wt. %, medium boilers and light boilers is drawn off and then sluiced out, optionally after reprocessing.
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公开(公告)号：DE19843652A1
公开(公告)日：2000-03-30
申请号：DE19843652
申请日：1998-09-23
Applicant: BASF AG
Inventor： THEIS GERHARD , ADRIAN TILL , BESLING BERND , HASSE HANS , VANSANT FRANS
Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. According to the inventive method, the pressure dehydration column or at least the first pressure dehydration column of the cascade (2, 3, 4) has a stripping section with at least one separation stage, preferably 2-10 separation stages, especially 3-6 stages, and in that part of the top flow of the dehydration column(s) (2, 3, 4) is sluiced out with the stripping section.
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公开(公告)号：NO327829B1
公开(公告)日：2009-10-05
申请号：NO20023513
申请日：2002-07-23
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 obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula Iwhere the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 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 R3 is hydrogen or a C1-C4-alkyl group,is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.
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公开(公告)号：CA2408325C
公开(公告)日：2009-08-11
申请号：CA2408325
申请日：2001-05-09
Applicant: BASF AG
Inventor： PICKENACKER KARIN , ADRIAN TILL , PAHL MELANIE , HILL THOMAS , KINDLER KLAUS , BOHNER GERD , MEYER GERALD , KAIBEL GERD
IPC: C07C7/08 , C07C11/167 , B01D3/14 , B01D3/40 , C07C5/09 , C07C7/00 , C07C7/163 , C10G7/08 , C10G70/00 , C10G70/02
Abstract: The invention relates to a method for treating a C4 fraction, comprising the following steps: extractive distillation (I), selective hydrogenation on a heterogeneous catalyst (II), a stream of crude 1,3-butadiene resulting from steps (I) and (II); and distillation of said stream of crude 1,3-butadiene i n order to obtain pure 1,3-butadiene (III). Steps I and II take place in a single column or in thermally coupled columns and step III is carried out in a second column.
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公开(公告)号：CA2345140C
公开(公告)日：2009-06-16
申请号：CA2345140
申请日：1999-09-21
Applicant: BASF AG
Inventor： VANSANT FRANS , HASSE HANS , ADRIAN TILL , THEIS GERHARD , BESSLING BERND
Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. According to the inventive method, the pressure dehydration column or at lea st the first pressure dehydration column of the cascade (2, 3, 4) has a stripping section with at least one separation stage, preferably 2- 10 separation stages, especially 3-6 stages, and in that part of the top flow of the dehydration column(s) (2, 3, 4) is sluiced out with the stripping section.
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