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：US20190255498A1

公开(公告)日：2019-08-22

申请号：US16346586

申请日：2017-10-25

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Mark W. Stewart ,  Ben J. Freireich ,  Madhusudhan Kodam ,  Brien A. Stears

IPC: B01J8/00 ,  B01J8/26 ,  B01J8/34 ,  C10G11/18

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.

公开(公告)号：US09758454B2

公开(公告)日：2017-09-12

申请号：US15326523

申请日：2015-09-09

Applicant: Dow Global Technologies LLC

Inventor： Daniela Ferrari ,  Brien A. Stears ,  Yu Liu

IPC: C07C17/361 ,  B01J23/46 ,  C07C19/01 ,  C07C29/10 ,  C07C31/34 ,  B01J21/18 ,  B01J23/889 ,  B01J35/00 ,  B01J21/08 ,  B01J23/80 ,  B01J23/745 ,  B01J23/78

CPC classification number: C07C17/361 ,  B01J21/08 ,  B01J21/18 ,  B01J23/462 ,  B01J23/745 ,  B01J23/78 ,  B01J23/80 ,  B01J23/8892 ,  B01J35/0006 ,  C07C19/01 ,  C07C29/10 ,  C07C29/48 ,  C07C31/34 ,  C07C31/36 ,  C07C31/42

Abstract: Convert dichloroisopropyl ether into a halogenated derivative by contacting the dichloroisopropyl ether with a source of hydrogen and a select heterogeneous hydrogenation catalyst under process conditions selected from a combination of a temperature within a range of from 50 degrees centigrade (° C.) to 350° C., a pressure within a range of from atmospheric pressure (0.1 megapascals) to 1000 pounds per square inch (6.9 MPa), a liquid feed volume flow to catalyst mass ratio between 0.5 and 10 L/Kg*h and a volume hydrogen/volume liquid ratio between 100 and 5000 ml gas/ml liquid. The halogenated derivative is at least one of 1-chloro-2-propanol and 1,2-dichloropropane 1, and glycerin monochlorohydrin.

公开(公告)号：US09512049B2

公开(公告)日：2016-12-06

申请号：US14367542

申请日：2012-12-21

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Max Markus Tirtowidjojo ,  Brien A. Stears ,  William J. Kruper, Jr. ,  Kurt F. Hirsekorn ,  Debashis Chakraborty

IPC: C07C2/86

CPC classification number: C07C2/861 ,  C07C2531/02 ,  C07C11/06 ,  C07C11/173

Abstract: Processes for the production of alkenes are provided. The processes make use of methane as a low cost starting material.

Abstract translation: 提供了生产烯烃的方法。 这些方法使用甲烷作为低成本起始材料。

公开(公告)号：US20150298037A1

公开(公告)日：2015-10-22

申请号：US14434973

申请日：2013-10-14

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  CARMAGEN ENGINEERING INC.

Inventor： Matthew Pretz ,  Mark W. Stewart ,  Don F. Shaw ,  Brien A. Stears ,  Madhusudhan M. Kodam ,  Ben Freireich

IPC: B01D45/16 ,  B04C3/00 ,  B01J8/00

CPC classification number: B01D45/16 ,  B01D45/08 ,  B01D45/12 ,  B01J8/0055 ,  B01J8/1809 ,  B01J8/1827 ,  B01J8/1872 ,  B01J8/34 ,  B01J2208/00991 ,  B04C3/00

Abstract: An improved process and an improved apparatus for minimizing attrition of catalyst particles, especially propane dehydrogenation catalyst particles, entrained in a combined flow of such particles and an entraining gas in a catalyst recovery means during separation of such particles from the entraining gas, by use of a pre-treatment step in which the combined flow is at a rate between 7.6 and 15.2 meters per second are provided.

Abstract translation: 一种改进的方法和一种改进的装置，用于在将这种颗粒与夹带气分离期间将催化剂颗粒，特别是丙烷脱氢催化剂颗粒的磨损最小化，这些丙烷脱氢催化剂颗粒被夹带在这种颗粒的组合流和催化剂回收装置中的夹带气体中， 提供了组合流量在7.6至15.2米/秒之间的速率的预处理步骤。

公开(公告)号：US11377403B2

公开(公告)日：2022-07-05

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：US20210292259A1

公开(公告)日：2021-09-23

申请号：US17271139

申请日：2019-08-27

Applicant: Dow Global Technologies LLC

Inventor： Kevin Blann ,  Alexey Kirilin ,  Andrzej Malek ,  Victor Sussman ,  Matthew T. Pretz ,  Brien A. Stears ,  Barry B. Fish ,  Eric E. Stangland ,  Brian W. Goodfellow ,  Manish Sharma

IPC: C07C5/48 ,  B01J23/08 ,  B01J21/06 ,  B01J23/42 ,  B01J21/10 ,  B01J23/26 ,  B01J21/04

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.

公开(公告)号：US10589242B2

公开(公告)日：2020-03-17

申请号：US16346586

申请日：2017-10-25

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Mark W. Stewart ,  Ben J. Freireich ,  Madhusudhan Kodam ,  Brien A. Stears

IPC: B01J8/34 ,  B01J8/26 ,  B01J8/00 ,  C10G11/18

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.

公开(公告)号：US10065905B2

公开(公告)日：2018-09-04

申请号：US15799398

申请日：2017-10-31

Applicant: Dow Global Technologies LLC

Inventor： Matthew Pretz ,  Lin Luo ,  Susan Domke ,  Howard W. Clark ,  Richard A. Pierce ,  Andrzej M. Malek ,  Mark W. Stewart ,  Brien A. Stears ,  Albert E. Schweizer, Jr. ,  Guido Capone ,  Duncan P. Coffey ,  Isa K. Mbaraka

IPC: C07C5/333 ,  B01J23/96 ,  B01J38/02 ,  B01J38/12 ,  B01J38/14 ,  C07C5/32 ,  B01J23/62

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.

公开(公告)号：US20170204028A1

公开(公告)日：2017-07-20

申请号：US15326523

申请日：2015-09-09

Applicant: Dow Global Technologies LLC

Inventor： Daniela Ferrari ,  Brien A. Stears ,  Yu Liu

IPC: C07C17/361 ,  B01J21/18 ,  B01J23/889 ,  B01J35/00 ,  B01J21/08 ,  B01J23/80 ,  B01J23/745 ,  B01J23/46 ,  B01J23/78

CPC classification number: C07C17/361 ,  B01J21/08 ,  B01J21/18 ,  B01J23/462 ,  B01J23/745 ,  B01J23/78 ,  B01J23/80 ,  B01J23/8892 ,  B01J35/0006 ,  C07C19/01 ,  C07C29/10 ,  C07C29/48 ,  C07C31/34 ,  C07C31/36 ,  C07C31/42

Abstract: Convert dichloroisopropyl ether into a halogenated derivative by contacting the dichloroisopropyl ether with a source of hydrogen and a select heterogeneous hydrogenation catalyst under process conditions selected from a combination of a temperature within a range of from 50 degrees centigrade (° C.) to 350° C., a pressure within a range of from atmospheric pressure (0.1 mega-pascals) to 1000 pounds per square inch (6.9 MPa), a liquid feed volume flow to catalyst mass ratio between 0.5 and 10 L/Kg*h and a volume hydrogen/volume liquid ratio between 100 and 5000 ml gas/ml liquid. The halogenated derivative is at least one of 1-chloro-2-propanol and 1,2-dichloropropane 1, and glycerin monochlorohydrin.