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公开(公告)号：US09687765B2
公开(公告)日：2017-06-27
申请号：US14434973
申请日：2013-10-14
Applicant: Dow Global Technologies LLC
Inventor： Matthew Pretz , Mark W. Stewart , Don F. Shaw , Brien A. Stears , Madhusudhan M. Kodam , Ben Freireich
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.
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22.发明申请公开(公告)号：US20150053079A1
公开(公告)日：2015-02-26
申请号：US14391014
申请日：2013-04-29
Inventor： William J. Koros , Liren Xu , Mark K. Brayden , Marcos V. Martinez , Brien A. Stears
CPC classification number: B01D53/228 , B01D67/0067 , B01D67/0088 , B01D67/0097 , B01D69/08 , B01D69/087 , B01D71/021 , B01D71/42 , B01D2323/08 , B01D2323/22 , B01D2325/20 , B29C47/0004 , B29D22/00 , B29K2023/00 , B29K2091/00
Abstract: A hollow fiber carbon molecular sieve membrane, a process for preparing the hollow fiber carbon molecular sieve membrane, and a process for effecting separation of an olefin from a gaseous mixture that comprises the olefin in admixture with its corresponding paraffin and optionally one or more gaseous components selected from hydrogen, an olefin other than the olefin and a paraffin other than the corresponding paraffin. The process and membrane may also be used to effect separation of the olefin(s) from remaining feedstream components subsequent to an olefin-paraffin separation.
Abstract translation: 中空纤维碳分子筛膜，中空纤维碳分子筛膜的制备方法以及将烯烃与其相应的链烷烃和任选的一种或多种气体组分混合的气态混合物分离的方法 选自氢气，除烯烃以外的烯烃和除相应石蜡以外的石蜡。 该方法和膜也可用于在烯烃 - 石蜡分离之后使烯烃与剩余的进料流组分分离。
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公开(公告)号：US11724974B2
公开(公告)日：2023-08-15
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
CPC classification number: C07C5/48 , B01J21/04 , B01J21/06 , B01J21/10 , B01J23/08 , B01J23/26 , B01J23/42 , C07C2521/04 , C07C2521/06 , C07C2521/10 , C07C2523/08 , C07C2523/26 , C07C2523/42
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US10392319B2
公开(公告)日：2019-08-27
申请号：US15037242
申请日：2014-12-03
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz , Lin Luo , Brien A. Stears , Mark W. Stewart
Abstract: Manage sulfur present as sulfur or a sulfur compound in a hydrocarbon feedstream while effecting dehydrogenation of hydrocarbon(s) (e.g. propane) contained in the hydrocarbon feedstream to its/their corresponding olefin (e.g. propylene where the hydrocarbon is propane) without subjecting the feedstream to desulfurization before it contacts a fluidizable dehydrogenation catalyst that is both a desulfurant and a dehydrogenation catalyst and comprises gallium and platinum on an alumina or alumina-silica catalyst support with optional alkali or alkaline earth metal such as potassium. Contact with such a catalyst yields a desulfurized crude olefin product that corresponds to the hydrocarbon and has a reduced amount of sulfur or sulfur compounds relative to the sulfur or sulfur compounds present in the hydrocarbon feedstream prior to contact with the catalyst.
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公开(公告)号：US20180057422A1
公开(公告)日：2018-03-01
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 , C07C11/08 , B01J23/62 , B01J23/96 , B01J38/02 , C07C11/06 , B01J38/14 , C07C11/10 , C07C5/32 , C07C11/04 , B01J38/12
CPC classification number: C07C5/3337 , B01J23/62 , B01J23/96 , B01J38/02 , B01J38/12 , B01J38/14 , B01J2523/00 , B01J2523/828 , C07C5/325 , C07C2521/12 , C07C2523/04 , C07C2523/08 , C07C2523/14 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2523/62 , C07C2527/224 , Y02P20/52 , Y02P20/584 , B01J2523/13 , B01J2523/31 , B01J2523/32 , B01J2523/41 , C07C11/04 , C07C11/06 , C07C11/08 , C07C11/10
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.
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公开(公告)号：US20170248364A1
公开(公告)日：2017-08-31
申请号：US15514272
申请日：2015-09-22
Applicant: Dow Global Technologies LLC
Inventor： Isa K. Mbaraka , William L. Jackson, JR. , Martin A. Cogswell , Mark Siddoway , Brien A. Stears
IPC: F25J3/02
Abstract: The disclosure provides a process for recovery of C2 and C3 components in an on-purpose propylene production system utilizing a packed rectifier with a countercurrent stream to strip C2 and C3 components from a combined de-ethanizer overhead lights vapor and cracked gas vapor stream.
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公开(公告)号：US20160289144A1
公开(公告)日：2016-10-06
申请号：US15037242
申请日：2014-12-03
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Matthew T. Pretz , Lin Luo , Brien A. Stears , Mark W. Stewart
CPC classification number: C07C5/3337 , C07C7/12 , C07C2521/12 , C07C2523/04 , C07C2523/08 , C07C2523/42 , C07C2523/62 , C07C2527/224 , C10G9/00 , C10G25/00 , C10G35/09 , C10G2400/20 , C07C11/06
Abstract: Manage sulfur present as sulfur or a sulfur compound in a hydrocarbon feedstream while effecting dehydrogenation of hydrocarbon(s) (e.g. propane) contained in the hydrocarbon feedstream to its/their corresponding olefin (e.g. propylene where the hydrocarbon is propane) without subjecting the feedstream to desulfurization before it contacts a fluidizable dehydrogenation catalyst that is both a desulfurant and a dehydrogenation catalyst and comprises gallium and platinum on an alumina or alumina-silica catalyst support with optional alkaline or alkaline earth metal such as potassium. Contact with such a catalyst yields a desulfurized crude olefin product that corresponds to the hydrocarbon and has a reduced amount of sulfur or sulfur compounds relative to the sulfur or sulfur compounds present in the hydrocarbon feedstream prior to contact with the catalyst.
Abstract translation: 在碳氢化合物原料流中管理作为硫或硫化合物存在的硫，同时将烃原料流中所含的烃（例如丙烷）脱氢至其相应的烯烃（例如丙烯，其中烃是丙烷），而不使进料流 在脱硫和脱氢催化剂接触可流化的脱氢催化剂之前脱硫，并且在含有碱金属或碱土金属如钾的氧化铝或氧化铝 - 二氧化硅催化剂载体上包含镓和铂。 与这种催化剂接触产生对应于烃的脱硫粗烯烃产物，并且在与催化剂接触之前相对于存在于烃进料流中的硫或硫化合物具有减少量的硫或硫化合物。
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29.发明申请CATALYST COMPOSITION AND REACTIVATION PROCESS USEFUL FOR ALKANE DEHYDROGENATIONS 有权用于碱脱氢酶的催化剂组合物和反应过程公开(公告)号：US20150202601A1
公开(公告)日：2015-07-23
申请号：US14420677
申请日：2013-07-31
Applicant: Dow Global Technologies LLC
Inventor： Lin Luo , Brien A. Stears
CPC classification number: B01J23/96 , B01J23/648 , B01J23/6482 , B01J23/652 , B01J23/6522 , B01J23/8906 , B01J23/8993 , B01J38/02 , B01J38/12 , B01J38/18 , B01J38/38 , C07C5/3337 , C07C2521/04 , C07C2521/08 , C07C2521/12 , C07C2523/02 , C07C2523/04 , C07C2523/08 , C07C2523/10 , C07C2523/22 , C07C2523/26 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2523/652 , C07C2523/745 , C07C2523/89 , Y02P20/52 , Y02P20/584 , C07C11/04 , C07C11/06 , C07C11/08
Abstract: A catalyst comprising a Group IIIA metal, a Group VIII noble metal, and an optional promoter metal, on a support selected from silica, alumina, silica-alumina compositions, rare earth modified alumina, and combinations thereof, doped with iron, a Group VIB metal, a Group VB metal, or a combination thereof, offers decreased reactivation time under air soak in comparison with otherwise identical catalysts. Reducing reactivation time may, in turn, reduce costs, both in inventory and capital.
Abstract translation: 在选自二氧化硅，氧化铝，二氧化硅 - 氧化铝组合物，稀土改性氧化铝及其组合的载体上，掺杂有铁的催化剂，包含IIIA族金属，VIII族贵金属和任选的助催化剂金属，VIB族 金属，VB族金属或其组合，与其他相同的催化剂相比，在空气浸泡下提供降低的再活化时间。 反过来，减少重新启动时间可能会降低库存和资本成本。
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