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公开(公告)号：US20210268464A1
公开(公告)日：2021-09-02
申请号：US17325489
申请日：2021-05-20
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz
Abstract: A method for processing a chemical stream includes contacting a feed stream with a catalyst in an upstream reactor section of a reactor having the upstream reactor section and a downstream reactor section, passing an intermediate product stream to the downstream reactor section, and introducing a riser quench fluid into the downstream reactor section, upstream reactor section, or transition section and into contact with the intermediate product stream and the catalyst to slow or stop the reaction. The method includes separating at least a portion of the catalyst from the product stream, passing the product stream to a product processing section, cooling the product stream, and separating a portion of the riser quench fluid from the product stream. The riser quench fluid separated from the product stream may be recycled back to the downstream reactor section, upstream reactor section, or transition section as the riser quench fluid.
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公开(公告)号：US10590048B2
公开(公告)日：2020-03-17
申请号：US16255364
申请日：2019-01-23
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz
IPC: C07C5/327 , C07C5/333 , B01J38/02 , B01J38/12 , B01J38/14 , B01J23/62 , B01J23/94 , B01J35/00 , B01J21/04 , B01J21/12 , B01J23/26 , B01J23/887 , B01J23/92 , B01J23/96 , B01J35/10 , B01J8/08 , B01J8/12 , B01J8/18 , B01J8/26 , B01J8/00
Abstract: An integrated process for producing C3-C4 olefins or di-olefins including: contacting a hydrocarbon feed and a catalyst feed in a fluidized dehydrogenation reactor under conditions such that a product mixture is formed and the catalyst is at least partially deactivated; transferring the product mixture and the catalyst from the reactor to a cyclonic separation system under conditions such that the product mixture is converted to form a new product mixture and is separated from the catalyst; transferring at least a portion of the catalyst to a regenerator vessel and heating it in order to combust the coke deposited thereon; subjecting the catalyst to a conditioning step to form an oxygen-containing, at least partially reactivated catalyst; and transferring the partially reactivated catalyst back to the fluidized dehydrogenation reactor.
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公开(公告)号：US20190314782A1
公开(公告)日：2019-10-17
申请号：US16309548
申请日：2017-05-31
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz , Donald F. Shaw , Fermin Alejandro Sandoval
Abstract: According to one or more embodiments disclosed herein, a system component of a fluid catalytic reactor system may include a catalyst separation section, a riser, and a reactor vessel. The catalyst separation section may include separation section walls defining an interior region of the catalyst separation section, a gas outlet port, a riser port, a separation device, and a catalyst outlet port. The riser may extend through the riser port of the catalyst separation section and include an external riser section and an internal riser section. The reactor vessel may include a reactor vessel inlet port, and a reactor vessel outlet port in fluid communication with the external riser section of the riser.
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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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45.发明授权公开(公告)号：US10047025B2
公开(公告)日：2018-08-14
申请号：US15525354
申请日：2015-11-10
Applicant: Dow Global Technologies LLC
Inventor： Barry B. Fish , Matthew T. Pretz , Max M. Tirtowidjojo
Abstract: A process is provided for the chlorination of ethane using chlorine as the chlorinating agent to produce ethylene, hydrogen chloride (HCl) and vinyl chloride monomer (VCM).
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Patent Agency Ranking
公开(公告)号：US10023511B2
公开(公告)日：2018-07-17
申请号：US15525352
申请日：2015-11-10
Applicant: Dow Global Technologies LLC
Inventor： Barry B. Fish , Matthew T. Pretz , Max M. Tirtowidjojo
Abstract: A process is provided for the chlorination of ethane using chlorine as the chlorinating agent to produce vinylidene (1,1-dichloroethylene), hydrogen chloride and ethylene.
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公开(公告)号：US20170361295A1
公开(公告)日：2017-12-21
申请号：US15533508
申请日：2015-12-14
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz , Don F. Shaw
CPC classification number: B01J8/1854 , B01J8/005 , B01J8/0055 , B01J8/1872 , B01J8/26 , B01J2208/00796 , C07C5/333
Abstract: An apparatus used in a fluidized reaction process comprising a vessel; a riser housed within the vessel; and a plurality of angled guide supports, wherein each guide support comprises an tubular section having a first end and a second end; a first hinge wherein a first end of the first hinge is connected to the first end of the tubular section, a second hinge wherein a first end of the second hinge is connected to the second end of the tubular section, wherein a second end of the first hinge is connected to an inside surface of the vessel and a second end of the second hinge is connected to the riser guide is provided.
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公开(公告)号：US09707533B2
公开(公告)日：2017-07-18
申请号：US14955344
申请日：2015-12-01
Applicant: Dow Global Technologies LLC
Inventor： Matthew T. Pretz
IPC: B01J8/34
CPC classification number: B01J8/34 , B01J8/0055 , B01J2208/00991 , C07C5/333 , C10G11/08 , C07C11/06
Abstract: A fluidized catalyst stripping unit for displacing entrained gas from catalyst particles comprising: a vessel housing a two stage cyclonic separation section which comprises one or more primary cyclonic separation devices and one or more secondary cyclones; a stripping section which comprises internals; and an inlet in fluid communication with a catalytic reactor to feed a particulate-fluid suspension to the two stage cyclonic separation section; wherein each primary cyclonic separation device comprises an internal cylindrical surface to separate a major fraction of the particulates from the suspension and form a vortex of reduced particulate content; a particulate discharge outlet from each secondary cyclone to the stripping section; wherein the particulate discharge outlet of the secondary cyclone is submerged in a catalyst bed located above the stripper internals, and wherein the stripping section comprises one or more bubble breaking grids within the catalyst bed and above the stripping internals is provided.
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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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公开(公告)号：US20240376026A1
公开(公告)日：2024-11-14
申请号：US18695957
申请日：2022-10-03
Applicant: Dow Global Technologies LLC
Inventor： Lin Luo , Hangyao Wang , Yu Liu , Matthew T. Pretz
Abstract: According to one or more embodiments of the present disclosure, a method for processing chemicals may include reacting a feed stream in the presence of a catalyst to form a product stream, passing the catalyst to a regenerator, removing olefins from a supplemental fuel stream to form an olefin depleted supplemental fuel stream, passing the olefin depleted supplemental fuel stream to the regenerator, combusting the olefin depleted supplemental fuel stream in the regenerator to heat the catalyst, and passing the heated catalyst to the reactor. The supplemental fuel stream may include at least 90 mol. % of the combination of hydrogen, methane, and nitrogen. The supplemental fuel stream may include from 0.1 mol. % to 10 mol. % olefins. The olefin depleted supplemental fuel stream may include less than or equal to 50% of the olefins present in the supplemental fuel stream prior to the olefin removal.
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