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    CHEMICAL FEED DISTRIBUTORS AND METHODS OF USING THE SAME
    31.
    发明公开
    CHEMICAL FEED DISTRIBUTORS AND METHODS OF USING THE SAME 审中-公开

    公开(公告)号：US20230364575A1

    公开(公告)日：2023-11-16

    申请号：US18246949

    申请日：2021-09-30

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Quan Yuan ,  Pritish M. Kamat ,  Liwei Li ,  Lin Luo

    IPC: B01J8/18 ,  B01J8/00 ,  B01J8/44

    CPC classification number: B01J8/1827 ,  B01J8/0085 ,  B01J8/44 ,  B01J2208/00902 ,  B01J2208/00911

    Abstract: According to one or more embodiments, a chemical feed distributor may include a chemical feed inlet, a body, a plurality of primary chemical feed outlets, and a secondary chemical feed outlet. The chemical feed inlet may pass a chemical feed stream into the chemical feed distributor. One or more walls of the body may define an elongated chemical feed stream flow path. The plurality of primary chemical feed outlets may be spaced along at least a portion of the length of the elongated chemical feed stream flow path and may be operable to pass a first portion of the chemical feed stream out of the feed distributor and into a vessel. The secondary chemical feed outlet may be downstream of the plurality of primary chemical feed outlets and may be operable to pass a second portion of the chemical feed stream out of the chemical feed distributor.

    Chemical processes and systems that include the combustion of supplemental fuels
    33.
    发明授权
    Chemical processes and systems that include the combustion of supplemental fuels 有权

    公开(公告)号：US11613506B2

    公开(公告)日：2023-03-28

    申请号：US17496308

    申请日：2021-10-07

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Hangyao Wang ,  Lin Luo

    IPC: C07C5/333

    Abstract: According to one or more embodiments presently disclosed, a method for processing a chemical stream may include contacting a feed stream with a catalyst in a reactor portion of a reactor system that includes a reactor portion and a catalyst processing portion. Contacting the feed stream with the catalyst may cause a reaction forming an effluent. The method may include separating the effluent stream from the catalyst, passing the catalyst to the catalyst processing portion, and processing the catalyst in the catalyst processing portion. Processing the catalyst may include passing the catalyst to a combustor, combusting a supplemental fuel stream in the combustor to heat the catalyst, and treating the heated catalyst with an oxygen-containing gas. The supplemental fuel stream may include at least 1 mol % of one or more hydrocarbons, and a weight ratio of catalyst to hydrocarbons in the combustor may be at least 300:1.

    METHODS FOR OPERATING ACETYLENE HYDROGENATION UNITS IN INTEGRATED STEAM CRACKING AND FLUIDIZED CATALYTIC DEHYDROGENATION SYSTEMS
    34.
    发明申请
    METHODS FOR OPERATING ACETYLENE HYDROGENATION UNITS IN INTEGRATED STEAM CRACKING AND FLUIDIZED CATALYTIC DEHYDROGENATION SYSTEMS 有权

    公开(公告)号：US20220227687A1

    公开(公告)日：2022-07-21

    申请号：US17621919

    申请日：2020-06-08

    Applicant: Dow Global Technologies LLC

    Inventor： Lin Luo ,  Hangyao Wang ,  Yu Liu ,  Matthew T. Pretz ,  Andrzej Malek

    IPC: C07C5/333 ,  C07C4/04 ,  C07C7/167 ,  B01J23/62

    Abstract: A method for operating an acetylene hydrogenation unit in an integrated steam cracking-fluidized catalytic dehydrogenation (FCDh) system may include separating a cracked gas from a steam cracking system and an FCDh effluent from an FCDh system into a hydrogenation feed and an acetylene-depleted stream, the hydrogenation feed comprising at least hydrogen, CO, and acetylene. During normal operating conditions, at least 20% of the CO in the hydrogenation feed is from the cracked gas. The method may include contacting the hydrogenation feed with an acetylene hydrogenation catalyst to hydrogenate at least a portion of the acetylene in the hydrogenation feed to produce a hydrogenated effluent. The steam cracking is operated under conditions that increase CO production such that a concentration of CO in the cracked gas is great enough that when a flowrate of the FCDh effluent is zero, a CO concentration in the hydrogenation feed is at least 100 ppmv.

    RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST
    35.
    发明申请
    RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST 有权

    公开(公告)号：US20220168709A1

    公开(公告)日：2022-06-02

    申请号：US17671779

    申请日：2022-02-15

    Applicant: Dow Global Technologies LLC

    Inventor： Lin Luo ,  Devon C. Rosenfeld ,  Andrzej M. Malek

    IPC: B01J23/62 ,  B01J38/48 ,  B01J23/96 ,  C07C5/333 ,  C07C5/32

    Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.

    RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST
    36.
    发明申请
    RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST 有权

    公开(公告)号：US20210129117A1

    公开(公告)日：2021-05-06

    申请号：US17137978

    申请日：2020-12-30

    Applicant: Dow Global Technologies LLC

    Inventor： Lin Luo ,  Devon C. Rosenfeld ,  Andrzej M. Malek

    IPC: B01J23/62 ,  B01J38/48 ,  B01J23/96 ,  C07C5/333 ,  C07C5/32

    Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.

    Propane dehydrogenation sulfur management
    37.
    发明授权
    Propane dehydrogenation sulfur management 有权

    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

    IPC: C07C5/333 ,  C07C7/12 ,  C10G25/00 ,  C10G35/09 ,  C10G9/00

    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.

    PROPANE DEHYDROGENATION SULFUR MANAGEMENT
    39.
    发明申请
    PROPANE DEHYDROGENATION SULFUR MANAGEMENT 审中-公开
    丙烷脱氢硫化物管理

    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

    IPC: C07C5/333 ,  C07C7/12

    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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