公开(公告)号：US10787611B2

公开(公告)日：2020-09-29

申请号：US16471170

申请日：2017-12-21

Applicant: Dow Global Technologies LLC

Inventor： Davy L. S. Nieskens ,  Aysegul Ciftci Sandikci ,  Peter E. Groenendijk ,  Andrzej Malek

IPC: C10G2/00 ,  C07C1/04 ,  B01J23/06 ,  B01J23/26 ,  B01J29/85 ,  B01J37/18 ,  C01B39/54

Abstract: A process for preparing C2 to C3 olefins includes introducing a feed stream having a volumetric ratio of hydrogen to carbon monoxide from greater than 0.5:1 to less than 5:1 into a reactor, and contacting the feed stream with a bifunctional catalyst. The bifunctional catalyst includes a Cr/Zn oxide methanol synthesis component having a Cr to Zn molar ratio from greater than 1.0:1 to less than 2.15:1, and a SAPO-34 silicoaluminophosphate microporous crystalline material. The reactor operates at a temperature ranging from 350° C. to 450° C., and a pressure ranging from 10 bar (1.0 MPa) to 60 bar (6.0 MPa). The process has a cumulative productivity of C2 to C3 olefins greater than 15 kg C2 to C3 olefins/kg catalyst.

公开(公告)号：US20200055801A1

公开(公告)日：2020-02-20

申请号：US16607780

申请日：2018-04-25

Applicant: Dow Global Technologies LLC

Inventor： Barry Brent Fish ,  Peter E. Groenendijk ,  Andrzej Malek ,  Davy L.S. Nieskens ,  Brien A. Stears

IPC: C07C7/08 ,  B01D3/14 ,  B01D3/40 ,  B01D53/14

Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.

公开(公告)号：US10329209B2

公开(公告)日：2019-06-25

申请号：US15769871

申请日：2016-09-07

Applicant: Dow Global Technologies LLC

Inventor： Davy Nieskens ,  Aysegul Ciftci Sandikci ,  Peter E. Groenendijk ,  Andrzej Malek

IPC: C07C1/04 ,  C10G2/00 ,  C07C11/04 ,  C07C11/06

Abstract: A process for preparing C2 and C3 olefins comprises contacting a feedstream including hydrogen, carbon monoxide, and a bifunctional catalyst in a reaction under certain specified conditions. The catalyst includes as components (1) chromium oxide and zinc oxide mixed metal oxides, and (2) a SAPO-34 molecular sieve. The resulting product of the reaction is relatively high in the target lower olefins and relatively low in less desirable products, including C2 and C3 paraffins, C4+ hydrocarbons, oxygenates, and methane, thereby reducing or eliminating the need for certain previously common and costly separations. The bifunctional catalyst as used in the inventive process also offers improvements in catalyst life in comparison with some methanol-to-olefins catalysts. The process may be carried out as a single unit operation.

公开(公告)号：US09919981B2

公开(公告)日：2018-03-20

申请号：US15324869

申请日：2015-07-08

Applicant: Dow Global Technologies LLC

Inventor： Adam Chojecki ,  Davy Nieskens ,  Thomas Davidian ,  Peter E. Groenendijk ,  Matthijs Ruitenbeek ,  Barry B. Fish ,  Max M. Tirtowidjojo ,  Garmt R. Meima

IPC: C07C1/04 ,  C07C1/12 ,  B01J37/03 ,  B01J37/04 ,  B01J35/02 ,  B01J35/00 ,  B01J23/26 ,  B01J29/85 ,  B01J23/80

CPC classification number: C07C1/043 ,  B01J23/26 ,  B01J23/80 ,  B01J29/005 ,  B01J29/85 ,  B01J35/0006 ,  B01J35/026 ,  B01J37/031 ,  B01J37/04 ,  C07C1/12 ,  C07C2521/04 ,  C07C2523/06 ,  C07C2523/26 ,  C07C2523/72 ,  C07C2523/80 ,  C07C2529/70 ,  C07C2529/83 ,  C07C2529/85 ,  C07C9/06 ,  C07C9/08

Abstract: A feedstream comprising hydrogen and a gas selected from carbon monoxide, carbon dioxide, or a combination thereof is converted to a product mixture containing a combination of saturated and unsaturated two carbon atom and three carbon atom hydrocarbons via contact with a mixed catalyst comprising a mixed metal oxide catalyst selected from a copper oxide, copper oxide/zinc oxide, copper oxide/alumina, copper oxide/zinc oxide/alumina catalyst, a zinc oxide/chromium oxide catalyst, or a combination thereof, in admixture with a molecular sieve catalyst having a CHA, AEI, AEL, AFI, BEA, or DDR framework type, or a combination of such molecular sieves. Exemplary molecular sieve catalysts include SAPO-34, SAPO-18, SAPO-5, and Beta. Advantages include reduced production of C1 hydrocarbons, C4 and higher hydrocarbons, or both; long catalyst lifetimes; desirable conversions; and desirable proportions of C2 and C3 paraffins.

公开(公告)号：US20220289647A1

公开(公告)日：2022-09-15

申请号：US17830038

申请日：2022-06-01

Applicant: Dow Global Technologies LLC

Inventor： Barry Brent Fish ,  Peter E. Groenendijk ,  Andrzej Malek ,  Davy L.S. Nieskens ,  Brien A. Stears

IPC: C07C7/08 ,  B01D3/14 ,  B01D3/40 ,  B01D53/14

Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.

公开(公告)号：US20220135494A1

公开(公告)日：2022-05-05

申请号：US17532472

申请日：2021-11-22

Applicant: Dow Global Technologies LLC

Inventor： Davy L.S. Nieskens ,  Glenn Pollefeyt ,  Andrzej Malek ,  Edward M. Calverley ,  Peter E. Groenendijk ,  Aysegul Ciftci Sandikci

IPC: C07C1/04 ,  B01J21/02 ,  B01J23/26 ,  B01J23/80 ,  C07C1/12

Abstract: A process for preparing C2 to C5 paraffins includes introducing a feed stream comprising hydrogen gas and a carbon-containing gas into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C5 paraffins in the reaction zone in the presence of a hybrid catalyst. The hybrid catalyst includes a metal oxide catalyst component and a microporous catalyst component. The metal oxide catalyst component satisfies: an atomic ratio of Cu/Zn from 0.01 to 3.00; an atomic ratio of Cr/Zn from 0.01 to 1.50; and percentage of (Al+Cr) from greater than 0.0 at % to 50.0 at % based on a total amount of metal in the metal oxide catalyst component.

公开(公告)号：US20210371355A1

公开(公告)日：2021-12-02

申请号：US16757694

申请日：2018-10-11

Applicant: Dow Global Technologies LLC

Inventor： Alexey Kirilin ,  Adam Chojecki ,  Kyle C. Andrews ,  Vera P. Santos Castro ,  Aysegul Ciftci Sandikci ,  Davy L.S. Nieskens ,  Peter E. Groenendijk ,  Andrzej Malek

IPC: C07C1/04 ,  B01J21/06 ,  B01J23/06 ,  B01J29/85 ,  B01J35/10

Abstract: A process for preparing C2 to C5 olefins includes introducing a feed stream comprising hydrogen and at least one carbon-containing component selected from the group consisting of CO, CO2, and mixtures thereof into a reaction zone. The feed stream is contacted with a hybrid catalyst in the reaction zone, and a product stream is formed that exits the reaction zone and includes C2 to C5 olefins. The hybrid catalyst includes a methanol synthesis component and a solid microporous acid component that is selected from molecular sieves having 8-MR access and having a framework type selected from the group consisting of CHA, AEI, AFX, ERI, LTA, UFI, RTH, and combinations thereof. The methanol synthesis component comprises a metal oxide support and a metal catalyst. The metal oxide support includes titania, zirconia, hafnia or mixtures thereof, and the metal catalyst includes zinc.

公开(公告)号：US10703689B2

公开(公告)日：2020-07-07

申请号：US16483653

申请日：2018-02-02

Applicant: Dow Global Technologies LLC

Inventor： Davy L. S. Nieskens ,  Aysegul Ciftci Sandikci ,  Peter E. Groenendijk ,  Andrzej Malek

IPC: C07C1/04 ,  B01J29/85 ,  B01J23/80 ,  C10G2/00

Abstract: A process for converting a feed stream to C2 to C5 hydrocarbons includes introducing a feed stream of hydrogen and at least one carbon-containing component selected from CO, CO2, and mixtures thereof into a reaction zone at an initial reactor pressure and an initial reactor temperature. The feed stream is contacted to a hybrid catalyst positioned in the reaction zone, and the hybrid catalyst includes a methanol synthesis component and a solid microporous acid material. The pressure within the reaction zone is increased during the contacting of the feed stream to the hybrid catalyst from the initial reactor pressure to a final reactor pressure. A temperature within the reaction zone at any time during the contacting of the feed stream to the hybrid catalyst is within ±20° C. of the initial reactor temperature.

公开(公告)号：US20200024213A1

公开(公告)日：2020-01-23

申请号：US16471194

申请日：2017-12-14

Applicant: Dow Global Technologies LLC

Inventor： Davy L.S. Nieskens ,  Aysegul Ciftci Sandikci ,  Peter E. Groenendijk ,  Andrzej Malek

IPC: C07C1/22 ,  C07C11/04 ,  C07C11/06 ,  C07C9/06 ,  C07C9/08

Abstract: A process for converting oxygenates to hydrocarbons includes introducing a feed stream having at least one oxygenate into a reaction zone, and introducing a hydrogen gas stream into the reaction zone. In the reaction zone the feed stream and the hydrogen gas stream are simultaneously contacted with a catalyst, and the catalyst includes a solid microporous acid component having 8-MR to 10-MR access. The hydrogen gas stream in the reaction zone has a partial pressure from 1 bar (100 kPa) to 48 bar (4800 kPa), and the reaction zone is at a temperature from 350° C. to 500° C.

公开(公告)号：US11845721B2

公开(公告)日：2023-12-19

申请号：US17830038

申请日：2022-06-01

Applicant: Dow Global Technologies LLC

Inventor： Barry Brent Fish ,  Peter E. Groenendijk ,  Andrzej Malek ,  Davy L. S. Nieskens ,  Brien A. Stears

IPC: B01D3/14 ,  C07C7/08 ,  B01D3/40 ,  B01D53/14

CPC classification number: C07C7/08 ,  B01D3/143 ,  B01D3/40 ,  B01D53/1418 ,  B01D53/1425 ,  B01D53/1475 ,  B01D2252/204

Abstract: A method for separating CO2 from C2 to C5 alkanes includes introducing a first stream including C2 to C5 alkanes and CO2 into a first separation zone, the first separation zone including a hydrocarbon solvent, and separating the first stream into a recycle stream and a second stream in the first separation zone. The recycle stream including CO2 and one or more of CO, H2, and CH4, and the second stream including C2 to C5 alkanes. The method further includes introducing the second stream into a second separation zone, and separating the second stream into a third stream and a fourth stream, wherein the third stream includes C2 alkanes and the fourth stream includes C3 to C5 alkanes.