公开(公告)号：DE102005031314A1

公开(公告)日：2007-01-18

申请号：DE102005031314

申请日：2005-07-05

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  CARDONE BIANCA ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: C07D307/32 ,  B01D3/34 ,  C07C27/04 ,  C07C31/20 ,  C07C67/08 ,  C07C67/48 ,  C07D307/08 ,  C07D307/20

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：AT382409T

公开(公告)日：2008-01-15

申请号：AT06763994

申请日：2006-06-30

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  BENDER BIANCA ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: B01D3/34 ,  B01D53/14

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：DE502006000261D1

公开(公告)日：2008-02-14

申请号：DE502006000261

申请日：2006-06-30

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  BENDER BIANCA ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: B01D3/34 ,  B01D53/14

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：MX2007000963A

公开(公告)日：2007-04-16

申请号：MX2007000963

申请日：2006-06-30

Applicant: BASF AG

Inventor： WECK ALEXANDER ,  WINDECKER GUNTHER ,  STEINIGER MICHAEL ,  BREDEHOFT JAN PETER ,  BENDER BIANCA ,  KNAPPIK PETER ,  HAUTTE DANY VANDEN ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: B01D3/00 ,  B01D53/00

Abstract: La invencion se relaciona con un proceso para separar anhidrido maleico de una corriente de gas que comprende anhidrido maleico, en donde (a) la corriente de gas que comprende anhidrido maleico se lleva hacia contacto con una fase absorbente liquido que comprende cuando menos un medio de absorcion inerte de ebullicion elevada para anhidrido maleico y (b) el anhidrido maleico se separa de la fase de absorbato liquido resultante extrayendo con un gas que comprende hidrogeno como medio de extraccion en una columna, en donde el medio de extraccion se alimenta en dos puntos en la columna que estan cuando menos separados en una placa teorica.

公开(公告)号：BRPI0605895A

公开(公告)日：2007-12-18

申请号：BRPI0605895

申请日：2006-06-30

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  BENDER BIANCA ,  KNAPPIK PETER ,  HAUTTE DANY VANDEN ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: B01D3/34 ,  B01D53/14

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：CA2577714A1

公开(公告)日：2007-01-11

申请号：CA2577714

申请日：2006-06-30

Applicant: BASF AG

Inventor： HAFFNER BEATRIX ,  STEINIGER MICHAEL ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  BENDER BIANCA ,  BREDEHOEFT JAN PETER ,  WECK ALEXANDER ,  PIERRE BERNARD ,  WINDECKER GUNTHER

IPC: B01D3/34 ,  B01D53/14

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.