公开(公告)号：US10435381B2

公开(公告)日：2019-10-08

申请号：US16318221

申请日：2017-07-19

Applicant: BASF SE ,  Dow Global Technologies LLC

Inventor： Joaquim Henrique Teles ,  Marvin Kramp ,  Christian Mueller ,  Nicolai Tonio Woerz ,  Bernd Metzen ,  Tobias Keller ,  Dominic Riedel ,  Heiner Schelling ,  Markus Weber ,  Daniel Urbanczyk ,  Andrei-Nicolae Parvulescu ,  Ulrike Wegerle ,  Ulrich Mueller ,  Meinolf Weidenbach ,  Werner J. Witzl ,  Karsten Luecke

IPC: C07D301/32 ,  C07D301/12 ,  C07D303/04 ,  B01D3/00 ,  B01D3/14 ,  B01D5/00 ,  B01D3/40 ,  B01J29/08

Abstract: The present invention is related to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, water, organic solvent, and propene; (iv) separating propene from the effluent stream by distillation, comprising (iv.1) subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous top stream S0 enriched in propene compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream S01 enriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (iv.2) returning a condensed portion of the stream S0 to an upper part of the distillation unit.

公开(公告)号：US11180467B2

公开(公告)日：2021-11-23

申请号：US16500313

申请日：2018-04-13

Applicant: BASF SE

Inventor： Nicolai Tonio Woerz ,  Ulrich Mueller ,  Andrei-Nicolae Parvulescu ,  Dominic Riedel ,  Marvin Kramp ,  Daniel Urbanczyk ,  Ulrike Wegerle ,  Christian Mueller ,  Bernd Metzen ,  Markus Weber ,  Joaquim Henrique Teles

IPC: C07D301/32 ,  C07D301/19 ,  C07D301/12

Abstract: The invention relates to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, propane, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propane, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propene, propane, propylene oxide, water, and the organic solvent; (iv) separating propene and propane from the effluent stream by distillation, comprising subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous stream (S1) which is enriched in propene and propane compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream (S2) which is enriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (v) separating propane from the stream (S1) in a separation zone, comprising subjecting the stream (S1) to washing conditions in a scrubber, wherein a solvent mixture comprising organic solvent and water is added as entraining agent, obtaining a bottoms stream (S3), which comprises organic solvent, water and at least 70 weight-% of the propene comprised in (S1); and a gaseous top stream (S4), which comprises at least 5 weight-% of the propane comprised in stream (S1).

公开(公告)号：US10676451B2

公开(公告)日：2020-06-09

申请号：US16315345

申请日：2017-07-19

Applicant: BASF SE ,  Dow Global Technologies LLC

Inventor： Joaquim Henrique Teles ,  Marvin Kramp ,  Christian Mueller ,  Nicolai Tonio Woerz ,  Bernd Metzen ,  Tobias Keller ,  Dominic Riedel ,  Heiner Schelling ,  Markus Weber ,  Daniel Urbanczyk ,  Andrei-Nicolae Parvulescu ,  Ulrike Wegerle ,  Ulrich Mueller ,  Meinolf Weidenbach ,  Werner J. Witzl

IPC: C07D301/32 ,  B01D3/14 ,  C07D303/04

Abstract: Disclosed is a process for purifying propylene oxide. A stream S0 containing propylene oxide, acetonitrile, water, and an organic compound containing one or more of acetone and propionaldehyde is provided. Propylene oxide is separated from S0 by subjecting S0 to distillation in a first distillation unit, obtaining a gaseous top stream S1c enriched in propylene oxide, a liquid bottom stream S1a enriched in acetonitrile and water, and a side stream S1b containing propylene oxide and enriched in the carbonyl compound; reacting the carbonyl compound in S1b with an organic compound containing an amino group to obtain a reaction product; separating propylene oxide from the reaction product in a second distillation unit, obtaining a gaseous top stream S3a enriched in propylene oxide and a liquid bottoms stream S3b enriched in the reaction product; and introducing stream S3a into the first distillation unit.

公开(公告)号：US10053439B2

公开(公告)日：2018-08-21

申请号：US15636787

申请日：2017-06-29

Applicant: BASF SE ,  DOW Global Technologies LLC

Inventor： Dominic Riedel ,  Joaquim Henrique Teles ,  Ulrike Wegerle ,  Andrei-Nicolae Parvulescu ,  Alexander Schroeder ,  Luise Spiske ,  Daniel Urbanczyk ,  Ulrich Mueller ,  Werner Witzl ,  Meinolf Weidenbach

IPC: C07D301/12 ,  B01J29/04 ,  B01J29/89 ,  C07D301/36 ,  C07D303/04 ,  B01J35/00 ,  B01J35/02 ,  C01B39/02 ,  C01B39/08 ,  C01B39/12 ,  C01B39/48 ,  B01J27/18 ,  B01J27/188 ,  B01J27/232 ,  B01J29/70 ,  B01J31/04 ,  C07D301/00 ,  B01J37/00 ,  B01J29/86

Abstract: A catalytic system containing a titanium zeolite of structure type MWW optionally containing zinc and containing at least one of an inorganic potassium salt and an organic potassium salt is provided. The catalyst system is useful in the preparation of propylene oxide.

公开(公告)号：US09738616B2

公开(公告)日：2017-08-22

申请号：US14908042

申请日：2014-07-16

Applicant: BASF SE ,  DOW Global Technologies LLC

Inventor： Dominic Riedel ,  Joaquim Henrique Teles ,  Ulrike Wegerle ,  Andrei-Nicolae Parvulescu ,  Alexander Schroeder ,  Luise Spiske ,  Daniel Urbanczyk ,  Ulrich Mueller ,  Werner Witzl ,  Meinolf Weidenbach

IPC: C07D301/12 ,  C07D303/00 ,  B01J29/89 ,  B01J37/00 ,  C07D301/36 ,  C07D303/04 ,  B01J35/00 ,  B01J35/02 ,  C01B39/02 ,  C01B39/08 ,  C01B39/12 ,  C01B39/48 ,  B01J27/18 ,  B01J27/188 ,  B01J27/232 ,  B01J29/70 ,  B01J31/04 ,  C07D301/00 ,  B01J29/86

CPC classification number: C07D301/12 ,  B01J27/1806 ,  B01J27/188 ,  B01J27/232 ,  B01J29/7088 ,  B01J29/86 ,  B01J29/89 ,  B01J31/04 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0045 ,  B01J2229/183 ,  B01J2229/186 ,  B01J2229/37 ,  B01J2229/40 ,  B01J2229/42 ,  C01B39/026 ,  C01B39/08 ,  C01B39/085 ,  C01B39/12 ,  C01B39/48 ,  C07D301/00 ,  C07D301/36 ,  C07D303/04 ,  Y02P20/52

Abstract: A continuous process for the preparation of propylene oxide, comprising (i) providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, water, optionally propane, and at least one dissolved potassium salt; (ii) passing the feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW, and subjecting the feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one potassium salt, optionally propene, and optionally pane; (iii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the at least one potassium salt, optionally propene, and optionally propane.