公开(公告)号：CA2501675C

公开(公告)日：2010-07-20

申请号：CA2501675

申请日：2003-12-11

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: B01D3/40 ,  C07C5/03 ,  C07C7/08

Abstract: The invention relates to a method for separating an initial mixture (A) consisting of at least two components by means of extractive distillation using a selective solvent (s) in a separation column (TKW) provided with a separation baffle. Said invention is characterised in that the inventive method is carried out in the separation column (TKW) provided with the separation baffle (TW) which is disposed in the direction of the length of the column, extends to the top end thereof and divides the inside of the column into a first partial area (1), a second partial area (2) and a common lower area (3), the initial mixture (A) is introduced into said first partial area (1), a first head flow (B) is extracted therefrom, the second head flow (c) is extracted from the second partial area (2), said flows exhibiting the predefined characteristics, the selective solvent (S) is distributed in the top section of the first partial area (1) and/or in the top section of the second partial (2), and than the quantity of the selective solvent (S1) distributed in the first partial area (1) and the quantity of the selective solvent (S2) distributed in the second partial area (2) are controlled in such a way that said predefined characteristics for each head (B, C) flow are respected, respectively.

公开(公告)号：DE50309037D1

公开(公告)日：2008-03-06

申请号：DE50309037

申请日：2003-07-23

Applicant: BASF AG

Inventor： HILL THOMAS ,  KINDLER KLAUS ,  HEIDA BERND

IPC: C07C7/08 ,  C07C11/167

Abstract: Sudstituted the abstract with a new abstract as follows: The invention relates to a continuous process for separation a mixture of hydrocarbons which has beenobtained by extractive distillation of C 4 fraction useing a selective solvent and the hydrocarbons from the fraction C 4 which are more readily soluble in the selective solvent than are the butanes and the butenes. The mixture is fed into a first distillation column in which it is separated into a steam which is taken off at the top and comprises 1,3-butadiene, propyne, possibly further low boilers and possibly water and a bottom stream comprising 1,3-butadiene, 1,2-butadiene, acetylenes and possibly further high boilers, with the proportion of 1,3-butadiene in the bottom stream from the distillatin column being regulated in such a way that it is at least sufficiently high to dilute the acetylenes to outside the range in which there is a risk of spontaneous decomposition. The stream taken off from the top of the first distillation column is fed to a second distillation column and is separated into a steam which is taken off at the top and comprises propyne, possibly further low boilers and possibly water and a bottom stream comprising pure 1,3-butadiene in the second distillation column.

公开(公告)号：MXPA05012924A

公开(公告)日：2006-02-28

申请号：MXPA05012924

申请日：2004-07-22

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C11/167 ,  C07C7/08

Abstract: Se propone un proceso para el fraccionamiento de una fraccion C4 cruda, este proceso comprende butanos, butenos, 1,3-butadieno y pequenas cantidades de otros hidrocarburos, que incluyen los acetilenos C4, por la destilacion extractiva, usando un solvente selectivo, en que la fraccion C4 cruda (1) se alimenta en la region media de una primera columna de destilacion extractiva (KI) y el solvente selectivo (2) se alimenta en la columna en un punto arriba del cual la fraccion C4 cruda (1) se introduce y una corriente lateral gaseosa (3), la cual comprende los acetilenos C4, junto con predominantemente el solvente selectivo y en el cual la concentracion de los acetilenos C4 esta debajo del limite de la descomposicion espontanea, se saca de la primera columna de destilacion extractiva (KI), en un punto debajo del punto de alimentacion de la fraccion C4 cruda (1), y una corriente superior (5), que comprende que los componentes, que son menos solubles que los acetilenos C4 en el solvente selectivo, se sacan de la parte superior de la primera columna de destilacion extractiva (KI).

公开(公告)号：PL375377A1

公开(公告)日：2005-11-28

申请号：PL37537703

申请日：2003-07-22

Applicant: BASF AG

Inventor： ADRIAN TILL ,  HILL THOMAS ,  KINDLER KLAUS ,  HEIDA BERND

IPC: B01D3/40 ,  C07C5/22 ,  C07C7/08

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).

公开(公告)号：BR0312830A

公开(公告)日：2005-04-26

申请号：BR0312830

申请日：2003-07-22

Applicant: BASF AG

Inventor： ADRIAN TILL ,  HILLMER THOMAS ,  KINDLER KLAUS ,  HEIDA BERND

IPC: B01D3/40 ,  C07C5/22 ,  C07C7/08

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).

公开(公告)号：MXPA05000772A

公开(公告)日：2005-04-19

申请号：MXPA05000772

申请日：2003-07-23

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C7/08 ,  C07C11/167

Abstract: La invencion se refiere a un metodo continuo para la separacion de una mezcla de hidrocarburos, obtenida por destilacion extractiva de una fraccion de 04 (04) con un disolvente selectivo (LM) y que contiene los hidrocarburos de la fraccion de 04 (04), los cuales son mas solubles en el disolvente selectivo (LM) en comparacion con butano o buteno. La mezcla se alimenta a una primera columna de destilacion (K I), en la cual la mezcla se separa en una corriente superior (K 1-K), que contiene 1,3-butadieno, propino, como una opcion otras sustancias con punto de ebullicion bajo, y como una opcion agua, y una corriente inferior (K I-S) que contiene 1,3-butadieno, 1,2-butadieno, acetileno, y como una opcion, otras sustancias con punto de ebullicion alto, con lo cual la proporcion de 1,3-butadieno en la corriente inferior (1( I-S) de la columna de destilacion (K 1) se regula, por ejemplo para que sea al menos bastante alta para diluir el acetileno de esta region con riesgo de descomposicion espontanea. La corriente superior (KI-I) de la primera columna de. destilacion (K 1) se alimenta a la segunda columna de destilacion (K II) y se separa en la segunda columna de destilacion (K II) en una corriente superior (K 11-K) que contiene propino, como una opcion otras sustancias de punto de ebullicion bajo, y como una opcion agua, y una corriente inferior (K II-S) que contiene 1,3-butadieno puro.

公开(公告)号：DE10322655A1

公开(公告)日：2004-12-09

申请号：DE10322655

申请日：2003-05-20

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C7/08 ,  C07C7/11 ,  C07C11/167

Abstract: A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K), wherein the operation of the dividing wall column (TK) is set by regulation of the energy input into the dividing wall column (TK) via a bottom vaporizer (V) and setting of the number of the theoretical plates in the lower common column region (C) so that a bottom stream (17) consisting of purified solvent is obtained from the dividing wall column (TK), is proposed.

公开(公告)号：CA2501675A1

公开(公告)日：2004-06-24

申请号：CA2501675

申请日：2003-12-11

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: B01D3/40 ,  C07C7/08 ,  C07C5/03

Abstract: The invention relates to a method for separating an initial mixture (A) consisting of at least two components by means of extractive distillation using a selective solvent (s) in a separation column (TKW) provided with a separation baffle. Said invention is characterised in that the inventive method is carried out in the separation column (TKW) provided with the separation baffle (TW) which is disposed in the direction of the length of t he column, extends to the top end thereof and divides the inside of the column into a first partial area (1), a second partial area (2) and a common lower area (3), the initial mixture (A) is introduced into said first partial area (1), a first head flow (B) is extracted therefrom, the second head flow (c) is extracted from the second partial area (2), said flows exhibiting the predefined characteristics, the selective solvent (S) is distributed in the top section of the first partial area (1) and/or in the top section of the second partial (2), and than the quantity of the selective solvent (S1) distributed in the first partial area (1) and the quantity of the selective solvent (S2) distributed in the second partial area (2) are controlled in su ch a way that said predefined characteristics for each head (B, C) flow are respected, respectively.

公开(公告)号：ID17004A

公开(公告)日：1997-11-27

申请号：ID972711

申请日：1997-08-05

Applicant: BASF AG

Inventor： HEIDA BERND ,  THIESSEN FRITZ ,  HAMMON ULRICH

IPC: B01D17/025 ,  B01D17/02 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055 ,  C07C57/07

Abstract: In a separator (11), designed to separate mixtures composed of liquids of various densities, the inflow (12) of the liquid mixture is so arranged and so designed that the inflowing liquid mixture hits an inner wall(16), located opposite the separator outflows, at an angle alpha of 0 DEG - 45 DEG relative to the normal to the container wall. Such a separator can be used in the manufacturing process for acrylic acid through catalytic vapour-phase oxidation of propene.

公开(公告)号：FR2552426B1

公开(公告)日：1986-11-28

申请号：FR8414519

申请日：1984-09-21

Applicant: BASF AG

Inventor： WICKENHAEUSER GERHARD ,  HEIDA BERND ,  GRAF FRITZ ,  HUPFER LEOPOLD

IPC: C07C59/153 ,  C07C51/00 ,  C07C51/48 ,  C07C67/00

Abstract: Aqueous glyoxylic acid solutions, essentially free of other acids, are recovered from aqueous solutions which still contain other acids, by a method in which the aqueous solution is mixed with an organic nitrogen compound at as high as 50 DEG C., the phases are separated, and the glyoxylic acid is extracted from the organic phase with water, at a higher temperature.