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公开(公告)号：AT473953T
公开(公告)日：2010-07-15
申请号：AT03727390
申请日：2003-04-29
Applicant: BASF SE
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.
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公开(公告)号：AT439339T
公开(公告)日：2009-08-15
申请号：AT01907445
申请日：2001-01-12
Applicant: BASF SE
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：DE50115031D1
公开(公告)日：2009-09-24
申请号：DE50115031
申请日：2001-01-12
Applicant: BASF SE
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：DE50113988D1
公开(公告)日：2008-07-03
申请号：DE50113988
申请日：2001-01-24
Applicant: BASF SE
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 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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Patent Agency Ranking
公开(公告)号：DE50309478D1
公开(公告)日：2008-05-08
申请号：DE50309478
申请日：2003-07-22
Applicant: BASF SE
Inventor： ADRIAN TILL , HILL THOMAS , KINDLER KLAUS , HEIDA BERND
Abstract: In a continuous process for fractionating a C4 fraction (C4) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).
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公开(公告)号：ES2300621T3
公开(公告)日：2008-06-16
申请号：ES03771068
申请日：2003-07-22
Applicant: BASF SE
Inventor： ADRIAN TILL , HILL THOMAS , KINDLER KLAUS , HEIDA BERND
Abstract: Procedimiento continuo para la separación de un corte (C4) a través de la destilación extractiva, con un solvente selectivo (LM) en una columna de destilación extractiva (EDK), caracterizado porque en la columna de destilación extractiva (EDK), y en dirección longitudinal de la misma, se halla dispuesta una pared divisoria (TW) que conforma una primera área parcial (A), una segunda área parcial (B) y un área de la columna inferior común (C), y porque de la primera área parcial (A) se separa una corriente de cabeza (C4H10) que contiene butanos, de la segunda área parcial (B) se separa una corriente de cabeza (C4H8) que contiene butenos, y del área de columna inferior común (C) se separa una corriente C4 que contiene hidrocarburos del corte (C4H6) que en el solvente selectivo (LM) son más fácilmente solubles que los butanos y los butenos.
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公开(公告)号：AT396167T
公开(公告)日：2008-06-15
申请号：AT01946840
申请日：2001-01-24
Applicant: BASF SE
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 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：DE50312887D1
公开(公告)日：2010-08-26
申请号：DE50312887
申请日：2003-04-29
Applicant: BASF SE
Inventor： ADRIAN TILL , HEIDA BERND , KINDLER KLAUS
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公开(公告)号：AT390396T
公开(公告)日：2008-04-15
申请号：AT03771068
申请日：2003-07-22
Applicant: BASF SE
Inventor： ADRIAN TILL , HILL THOMAS , KINDLER KLAUS , HEIDA BERND
Abstract: In a continuous process for fractionating a C4 fraction (C4) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).
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