公开(公告)号：BRPI0418215A

公开(公告)日：2007-04-27

申请号：BRPI0418215

申请日：2004-12-30

Applicant: BASF AG

Inventor： JOHANN THORSTEN ,  SCHINDLER GOETZ-PETER ,  BRODHAGEN ANDREAS ,  CRONE SVEN ,  BENFER REGINA ,  HILL THOMAS ,  DUDA MARK

IPC: C07C5/333 ,  C07C5/48 ,  C07C11/167

Abstract: The disclosure relates to a process for preparing butadiene. The process involves nonoxidatively catalytically dehydrogenating butane to obtain a product gas stream containing butane, 1-butene, 2-butene, butadiene, hydrogen and secondary constituents. The 1-butene and 2-butene of the product gas stream is then oxidatively dehydrogenated to give a second gas stream containing butane,2-butene, butadiene, hydrogen, steam and secondary constituents. Next, the butane,2-butene and butadiene are separated from the second gas stream and the butane and 2-butene are then separated from the butadiene product. The butane and 2-butene are then recycled into the nonoxidative catalytic dehydrogenating zone.

公开(公告)号：DE50305512D1

公开(公告)日：2006-12-07

申请号：DE50305512

申请日：2003-08-08

Applicant: BASF AG

Inventor： FUNKE FRANK ,  HILL THOMAS ,  VON WATZDORF RUEDIGER ,  MATTMANN WOLFGANG ,  HARDER WOLFGANG ,  HENKES ERHARD ,  LITTMANN GERD ,  JULIUS MANFRED

IPC: C07C209/86 ,  B01D3/14 ,  C07C209/84 ,  C07C211/36

Abstract: Recovery of isophoronediamine (IPDA) comprises preparation of IPDA having a cis/trans isomer ratio of less than 73/27 and separation into at least 5 fractions by distillation including an IPDA fraction having a cis/trans ratio of greater than 73/27 and a fraction having a cis/trans ratio of less than 66/34. A process for the recovery of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) comprises; (a) preparation of IPDA having a cis/trans isomer ratio of less than 73/27; (b) introduction of IPDA to the middle region of a distillation column having inserts and distillation of IPDA at 5-300 degreesC and 10-2000 mbar; (c) optionally further purification of the IPDA from (b) by distillation in at least one further column whereby the IPDA from step (b) and (c) are separated into at least 5 fractions comprising an organic fraction (1a) containing impurities having a lower b. pt. than trans-IPDA, an aqueous fraction (1b) containing impurities having a lower b. pt. than trans-IPDA, a fraction (2) containing impurities having a higher b. pt. than cis-IPDA, an IPDA fraction (3) having a cis/trans ratio of greater than 73/27 and an IPDA fraction (4) having a cis/trans ratio of less than 66/34.

公开(公告)号：CA2584235A1

公开(公告)日：2006-04-20

申请号：CA2584235

申请日：2005-10-13

Applicant: BASF AG

Inventor： SCHUBERT MARKUS ,  HILL THOMAS ,  BRODHAGEN ANDREAS ,  STEPHAN JUERGEN ,  POPLOW FRANK ,  ROEPER MICHAEL

IPC: C07C5/05 ,  C07C6/04 ,  C07C11/08 ,  C07C11/10 ,  C07C11/107

Abstract: A C4-olefin mixture having a 1,3-butadiene content of from 100 to 500 ppm and a content of 1,2-dienes of less than 10 ppm is described. The present invention further provides a process for preparing this C4-olefin mixture and provides for its use in a metathesis reaction for preparing 2-pentene and/or 3-hexene.

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：DE10361824A1

公开(公告)日：2005-07-28

申请号：DE10361824

申请日：2003-12-30

Applicant: BASF AG

Inventor： JOHANN THORSTEN ,  SCHINDLER GOETZ-PETER ,  BRODHAGEN ANDREAS ,  CRONE SVEN ,  BENFER REGINA ,  HILL THOMAS ,  DUDA MARK

IPC: C07C5/333 ,  C07C5/48 ,  C07C11/167 ,  C07C7/10 ,  C07C5/05 ,  C07C11/08 ,  C07C11/16

Abstract: The disclosure relates to a process for preparing butadiene. The process involves nonoxidatively catalytically dehydrogenating butane to obtain a product gas stream containing butane, 1-butene, 2-butene, butadiene, hydrogen and secondary constituents. The 1-butene and 2-butene of the product gas stream is then oxidatively dehydrogenated to give a second gas stream containing butane,2-butene, butadiene, hydrogen, steam and secondary constituents. Next, the butane,2-butene and butadiene are separated from the second gas stream and the butane and 2-butene are then separated from the butadiene product. The butane and 2-butene are then recycled into the nonoxidative catalytic dehydrogenating zone.

公开(公告)号：DE10259858A1

公开(公告)日：2004-07-08

申请号：DE10259858

申请日：2002-12-20

Applicant: BASF AG

Inventor： HILL THOMAS ,  DIALER HARALD ,  ALBA PEREZ ANA ,  ZEHNER PETER ,  UNGER JOERG ,  MARTINEZ LUIS ,  LAIB HEINRICH

IPC: C07C5/05 ,  C07C5/09 ,  C07C7/163 ,  C07C7/167 ,  C07C5/03

公开(公告)号：AU2003258591A8

公开(公告)日：2004-04-30

申请号：AU2003258591

申请日：2003-08-08

Applicant: BASF AG

Inventor： HARDER WOLFGANG ,  WATZDORF JOBST RUDIGER VON ,  LITTMANN GERD ,  MATTMANN WOLFGANG ,  HILL THOMAS ,  HENKES ERHARD ,  JULIUS MANFRED ,  FUNKE FRANK

IPC: C07C209/86 ,  B01D3/14 ,  C07C209/84 ,  C07C211/36

Abstract: Recovery of isophoronediamine (IPDA) comprises preparation of IPDA having a cis/trans isomer ratio of less than 73/27 and separation into at least 5 fractions by distillation including an IPDA fraction having a cis/trans ratio of greater than 73/27 and a fraction having a cis/trans ratio of less than 66/34. A process for the recovery of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) comprises; (a) preparation of IPDA having a cis/trans isomer ratio of less than 73/27; (b) introduction of IPDA to the middle region of a distillation column having inserts and distillation of IPDA at 5-300 degreesC and 10-2000 mbar; (c) optionally further purification of the IPDA from (b) by distillation in at least one further column whereby the IPDA from step (b) and (c) are separated into at least 5 fractions comprising an organic fraction (1a) containing impurities having a lower b. pt. than trans-IPDA, an aqueous fraction (1b) containing impurities having a lower b. pt. than trans-IPDA, a fraction (2) containing impurities having a higher b. pt. than cis-IPDA, an IPDA fraction (3) having a cis/trans ratio of greater than 73/27 and an IPDA fraction (4) having a cis/trans ratio of less than 66/34.

公开(公告)号：BR0110721A

公开(公告)日：2004-02-10

申请号：BR0110721

申请日：2001-05-09

Applicant: BASF AG

Inventor： MEYER GERALD ,  KAIBEL GERD ,  BOHNER GERD ,  KINDLER KLAUS ,  ADRIAN TILL ,  PICKENOCKER 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.

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：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.