公开(公告)号：PL208017B1

公开(公告)日：2011-03-31

申请号：PL37537703

申请日：2003-07-22

Applicant: BASF AG

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

IPC: C07C7/08 ,  B01D3/40 ,  C07C5/22

公开(公告)号：AT370925T

公开(公告)日：2007-09-15

申请号：AT04763397

申请日：2004-07-22

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C7/08

Abstract: A process for fractionating a crude C4 fraction comprising butanes, butenes, 1,3-butadiene and small amounts of other hydrocarbons including C4-acetylenes, by extractive distillation using a selective solvent, wherein the crude C4 fraction (1) is fed into the middle region of a first extractive distillation column (K I) and the selective solvent (2) is fed into the column at a point above that at which the crude C4 fraction (1) is introduced and a gaseous side stream (3) which comprises the C4-acetylenes together with predominantly the selective solvent and in which the concentration of the C4-acetylenes is below the spontaneous decomposition limit is taken off from the first extractive distillation column (K I) at a point below the feed point for the crude C4 fraction (1) and an overhead stream (5) comprising the components which are less soluble than the C4-acetylenes in the selective solvent is taken off from the top of the first extractive distillation column, is proposed.

公开(公告)号：PL373663A1

公开(公告)日：2005-09-05

申请号：PL37366303

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：CA2549063A1

公开(公告)日：2005-08-18

申请号：CA2549063

申请日：2005-02-04

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C7/08 ,  C07C11/167

Abstract: The invention relates to a method for obtaining raw-1,3-butadiene by extractive distillation with a selective solvent from a C4-fraction, containing C4-acetylenes as secondary components, in a partition column (TK) with a bottom evaporator (V1) inside of which a partition (T) is arranged in longitudinal direction of the column while forming a first partial area (A), a second partial area (B) and a lower shared column area (C), and to which an extractive wash column (K) is connected upstream therefrom. The invention is characterized in that the supply of energy into the partition column (TK) vi a the bottom evaporator (V1) is controlled in such a manner that a bottom flow (17) is drawn out from the partition column (TK), this bottom flow containin g solvent loaded with C4-acetylenes whose proportion of 1,3-butadiene is limit ed in order to render the loss of 1,3-butadiene economically acceptable. The invention is also characterized in that the bottom flow (17) is fed to an acetylene degassing device (AG) and, inside this acetylene degassing device (AG), the C4-acetylenes are stripped out via the top and purified solvent is obtained in the form of a bottom flow (27).

公开(公告)号：CA2526011A1

公开(公告)日：2004-12-02

申请号：CA2526011

申请日：2004-05-19

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: C07C7/08 ,  C07C11/167

Abstract: The invention relates to a method for obtaining crude 1,3-butadiene from a C 4 fraction, by means of extractive distillation, using a selective solvent in a partition column (TK) in which a partition (T) is arranged in the longitudin al direction of the column, forming a first partial region (A), a second partia l region (B) and a lower common column region (C), an extractive wash column ( K) being arranged upstream of said partition column. The operation of the partition column (TK) is adjusted by regulating the energy input thereinto (TK) using a bottom evaporator (V) and by means of the arrangement of the number of theoretical separating stages in the lower common column region (C ), in such a way that a bottom flow (17) consisting of a purified solvent can b e obtained from the partition column (TK).

公开(公告)号：DE10258160A1

公开(公告)日：2004-06-24

申请号：DE10258160

申请日：2002-12-12

Applicant: BASF AG

Inventor： HEIDA BERND

IPC: B01D3/40 ,  C07C7/08

Abstract: A process for the separation of a reaction mixture of two or more components by extractive distillation with a selective solvent in a partition wall column comprises carrying out the process in a partition wall column having a partition wall that extends to the upper end of the column and separates the inside of the column into a first region and a second region with a lower common region. A process for the separation of a reaction mixture of two or more components by extractive distillation with a selective solvent in a partition wall column (I) comprises: (a) carrying out the process in a partition wall column having a partition wall that extends to the upper end of the column and separates the inside of the column into a first region (A1) and a second region (A2) with a lower common region; (b) feeding the reaction mixture to the first region (A1) and withdrawal of a first head stream (B1) from (A1) and withdrawal of a second head stream (B2) from the second region (A2) having predefined specifications; (c) addition of the selective solvent to the upper part of the second region (A1) and/or the upper part of second region (A2) whereby the amount of solvent fed to regions (A) and (A2) is adjusted such that the pre-defined specifications for the head streams (B1) and (B2) are maintained. An Independent claim is included for the partition wall column (I).

公开(公告)号：CA2493079A1

公开(公告)日：2004-02-05

申请号：CA2493079

申请日：2003-07-22

Applicant: BASF AG

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

IPC: B01D3/40 ,  C07C5/22 ,  C07C7/08

Abstract: The invention relates to a continuous method for separating a C4 cut (C4) by means of extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK). A separating wall (TW), forming a firs t partial region (A), a second partial region (B) and a lower common column region (C), is arranged in the longitudinal direction of the extractive distillation column (EDK). According to said method, a head flow (C4H10) comprising butane is separated from the first partial region (A), a head flo w (C4H8) comprising butene is separated from the second partial region (B), an d a flow (C4H6) comprising the hydrocarbons from the C4 cut is separated from the lower common column region (C), said hydrocarbons dissolving more easily in the selective solvent (LM) than the butane and the butene.

公开(公告)号：DE10219375A1

公开(公告)日：2003-11-13

申请号：DE10219375

申请日：2002-04-30

Applicant: BASF AG

Inventor： TILL ADRIAN ,  HEIDA BERND ,  KINDLER KLAUS

IPC: B01D3/14 ,  B01D3/40 ,  C07C7/08 ,  C07C9/10 ,  C07C11/08

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：DE59706891D1

公开(公告)日：2002-05-08

申请号：DE59706891

申请日：1997-08-01

Applicant: BASF AG

Inventor： HEIDA BERND ,  THIESSEN FRITZ ,  HAMMON ULRICH ,  DAMS ALBRECHT

IPC: C07C51/25 ,  C07C51/48 ,  C07C57/04 ,  C07C57/05 ,  C07C57/07

Abstract: PCT No. PCT/EP97/04214 Sec. 371 Date Feb. 4, 1999 Sec. 102(e) Date Feb. 4, 1999 PCT Filed Aug. 1, 1997 PCT Pub. No. WO98/05622 PCT Pub. Date Feb. 12, 1998A process for isolating acrylic acid forward during catalytic gas phase oxidation of propene, which entails separating acrylic acid from the gas phase oxidation reaction using an absorbent containing biphenyl, diphenyl ether or dimethyl phthalate; and extracting acrylic acid from acid water of the gas phase reaction with a solvent containing biphenyl, diphenyl ether or dimethyl phthalate.

公开(公告)号：BR9711183A

公开(公告)日：1999-08-17

申请号：BR9711183

申请日：1997-08-04

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.