Brien A Stears

US Patent:

20100069515, Mar 18, 2010

Filed:

Mar 21, 2007

Appl. No.:

12/296961

Inventors:

Max M. Tirtowidjojo - Lake Jackson TX, US
Barry B. Fish - Lake Jackson TX, US
Hendrik L. Pelt - Terneuzen, NL
Dennis W. Jewell - Angleton TX, US
Mark D. Bearden - Richland WA, US
Jon H. Siddall - Midland MI, US
Brien A. Stears - League City TX, US
Haivan D. Tran - Pearland TX, US
Jan W. Verwijs - Hoek, NL
Richard M. Wehmeyer - Lake Jackson TX, US

International Classification:

C07C 27/06

US Classification:

518705

Abstract:

The present invention provides a method for simplifying manufacture of a mixed alcohol or mixed oxygenate product from synthesis gas. The mixed alcohol or mixed oxygenate product contains ethanol and other oxygenates with two or more carbon atoms per molecule. The method includes stripping a portion of carbon dioxide and inert gases contained in a mixed alcohol synthesis reaction product using a methanol-containing stream, such as one produced as part of the method, as a medium to absorb said carbon dioxide and inert gases and recycling light products and heavy products to one or more of synthesis gas generation, mixed alcohol synthesis and separation of desired mixed alcohol or mixed oxygenate products from other components of a mixed alcohol synthesis stream. The present invention also provides downstream processing of the mixed alcohol or mixed oxygenate product by subjecting the product to a dehydration step in order to convert at least ethanol, preferably at least ethanol and propanol, to their corresponding olefins (e.g. ethylene and propylene).

US Patent:

20110201841, Aug 18, 2011

Filed:

Aug 19, 2009

Appl. No.:

13/123908

Inventors:

Robert G. Bowman - Woodbury MN, US
Eric E. Stangland - Midland MI, US
Mark E. Jones - Midland MI, US
Dean M. Millar - Midland MI, US
Simon G. Podkolzin - Midland MI, US
Brien A. Stears - League City TX, US
Richard M. Wehmeyer - Lake Jackson TX, US

International Classification:

C07C 51/14
C07C 17/013

US Classification:

562520, 570243

Abstract:

Oxidatively halogenate methane by placing a feedstream that comprises methane, a source of halogen, a source of oxygen and, optionally, a source of diluent gas in contact with a first catalyst (e.g. a solid super acid or a solid super base) that has greater selectivity to methyl halide and carbon monoxide than to methylene halide, trihalomethane or carbon tetrahalide. Improve overall selectivity to methyl halide by using a second catalyst that converts at least part of the feedstream to a mixture of methyl halide, methylene halide, trihalomethane, carbon tetrahalide and unreacted oxygen, and placing that mixture in contact with the first catalyst which converts at least a portion of the methylene halide, trihalomethane and carbon tetrahalide to carbon monoxide, hydrogen halide and water.

US Patent:

20220289647, Sep 15, 2022

Filed:

Jun 1, 2022

Appl. No.:

17/830038

Inventors:

- Midland MI, US
Peter E. Groenendijk - Terneuzen, NL
Andrzej Malek - Midland MI, US
Davy L.S. Nieskens - Terneuzen, NL
Brien A. Stears - Friendswood TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 7/08
B01D 3/14
B01D 3/40
B01D 53/14

Abstract:

A method for separating COfrom Cto Calkanes includes introducing a first stream including Cto Calkanes and COinto 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 COand one or more of CO, H, and CH, and the second stream including Cto Calkanes. 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 Calkanes and the fourth stream includes Cto Calkanes.

US Patent:

20210292259, Sep 23, 2021

Filed:

Aug 27, 2019

Appl. No.:

17/271139

Inventors:

- Midland MI, US
Alexey Kirilin - Hoek, NL
Andrzej Malek - Midland MI, US
Victor Sussman - Midland MI, US
Matthew T. Pretz - Freeport TX, US
Brien A. Stears - League City TX, US
Barry B. Fish - Lake Jackson TX, US
Eric E. Stangland - Midland MI, US
Brian W. Goodfellow - Sugarland TX, US
Manish Sharma - Missouri City TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 5/48
B01J 23/08
B01J 21/06
B01J 23/42
B01J 21/10
B01J 23/26
B01J 21/04

Abstract:

According to one or more embodiments described herein, a method for dehydrogenating hydrocarbons may include passing a hydrocarbon feed comprising one or more alkanes or alkyl aromatics into a fluidized bed reactor, contacting the hydrocarbon feed with a dehydrogenation catalyst in the fluidized bed reactor to produce a dehydrogenated product and hydrogen, and contacting the hydrogen with an oxygen-rich oxygen carrier material in the fluidized bed reactor to combust the hydrogen and form an oxygen-diminished oxygen carrier material. In additional embodiments, a dual-purpose material may be utilized which has dehydrogenation catalyst and oxygen carrying functionality.

US Patent:

20200055801, Feb 20, 2020

Filed:

Apr 25, 2018

Appl. No.:

16/607780

Inventors:

- Midland MI, US
Peter E. Groenendijk - Terneuzen, NL
Andrzej Malek - Midland MI, US
Davy L.S. Nieskens - Terneuzen, NL
Brien A. Stears - Friendswood TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 7/08
B01D 3/14
B01D 3/40
B01D 53/14

Abstract:

A method for separating COfrom Cto Calkanes includes introducing a first stream including Cto Calkanes and COinto 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 COand one or more of CO, H, and CH, and the second stream including Cto Calkanes. 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 Calkanes and the fourth stream includes Cto Calkanes.

US Patent:

20190282987, Sep 19, 2019

Filed:

Oct 30, 2017

Appl. No.:

16/346626

Inventors:

- Midland MI, US
Ben J. Freireich - Midland MI, US
Madhusudhan Kodam - Midland MI, US
Brien A. Stears - Galveston TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

B01J 8/26

Abstract:

According to one or more embodiments of the present disclosure, a fluid catalytic reactor may be scaled-up by a method that includes one or more of constructing, operating, observing, or obtaining data related to a template fluid catalytic reactor comprising a template riser, a template lower reactor portion, and a template transition portion connecting the template riser and the template lower reactor portion. The method may further include one or more of constructing or operating a scaled-up fluid catalytic reactor based on the template fluid catalytic reactor.

US Patent:

20190255498, Aug 22, 2019

Filed:

Oct 25, 2017

Appl. No.:

16/346586

Inventors:

- Midland MI, US
Mark W. Stewart - Houston TX, US
Ben J. Freireich - Midland MI, US
Madhusudhan Kodam - Midland MI, US
Brien A. Stears - Freeport TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

B01J 8/00
B01J 8/26
B01J 8/34
C10G 11/18

Abstract:

According to one or more embodiments, a fluid catalytic reactor may include a riser, a lower reactor portion, a transition portion, and a flow director. The riser may include a cross-sectional area, and the lower reactor portion may include a cross-sectional area. The transition portion may attach the riser to the lower reactor portion. The cross-sectional area of the riser may be less than the cross-sectional area of the lower reactor portion such that the transition portion is tapered inward from the lower reactor portion to the riser. The flow director may be positioned at least within an interior region of the transition portion. The flow director may include a body which affects the velocity profile of fluids moving from the lower reactor portion to the riser.

US Patent:

20180057422, Mar 1, 2018

Filed:

Oct 31, 2017

Appl. No.:

15/799398

Inventors:

- Midland MI, US
Lin Luo - Sugar Land TX, US
Susan Domke - Midlothian VA, US
Howard W. Clark - College Station TX, US
Richard A. Pierce - Lake Jackson TX, US
Andrzej M. Malek - Midland MI, US
Mark W. Stewart - Pearland TX, US
Brien A. Stears - Friendswood TX, US
Guido Capone - San Giuliano Milanese, IT
Duncan P. Coffey - Hockessin, DE
Isa K. Mbaraka - Prospect KY, US

International Classification:

C07C 5/333
C07C 11/08
B01J 23/62
B01J 23/96
B01J 38/02
C07C 11/06
B01J 38/14
C07C 11/10
C07C 5/32
C07C 11/04
B01J 38/12

Abstract:

Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660 C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.