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    METHODS FOR MAKING LIGHT OLEFINS FROM DIFFERENT FEED STREAMS
    22.
    发明申请
    METHODS FOR MAKING LIGHT OLEFINS FROM DIFFERENT FEED STREAMS 审中-公开

    公开(公告)号：US20200017427A1

    公开(公告)日：2020-01-16

    申请号：US16491318

    申请日：2018-03-09

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz

    IPC: C07C5/333 ,  C07C1/24 ,  C07C1/22 ,  C07C4/06 ,  B01J8/26 ,  B01J8/18 ,  B01J8/00

    Abstract: According to one or more embodiments of the present disclosure, chemical streams may be processed by a method which may comprise operating a first chemical process, stopping the first chemical process and removing the first catalyst from the reactor, and operating a second chemical process. The reaction of the first chemical process may be a dehydrogenation reaction, a cracking reaction, a dehydration reaction, or a methanol-to-olefin reaction. The reaction of the second chemical process may be a dehydrogenation reaction, a cracking reaction, a dehydration reaction, or a methanol-to-olefin reaction. The first reaction and the second reaction may be different types of reactions.

    FLUID CATALYTIC REACTORS WHICH INCLUDE FLOW DIRECTORS
    23.
    发明申请
    FLUID CATALYTIC REACTORS WHICH INCLUDE FLOW DIRECTORS 审中-公开

    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.

    Apparatus used in a fluidized reaction process
    24.
    发明授权
    Apparatus used in a fluidized reaction process 有权

    公开(公告)号：US10272407B2

    公开(公告)日：2019-04-30

    申请号：US15533508

    申请日：2015-12-14

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Don F. Shaw

    IPC: B01J19/18 ,  B01J8/26 ,  B01J8/18 ,  B01J8/00 ,  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.

    Integrated C3—C4 hydrocarbon dehydrogenation process
    25.
    发明授权
    Integrated C3—C4 hydrocarbon dehydrogenation process 有权

    公开(公告)号：US10227271B2

    公开(公告)日：2019-03-12

    申请号：US15561381

    申请日：2016-03-07

    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

    Abstract: An integrated process, suitable for use in a new or retrofitted plant, produces an olefin or di-olefin via the dehydrogenation of an appropriate C3-C4 hydrocarbon feed includes (1) contacting the feed and a dehydrogenation catalyst having a Geldart A or Geldart B classification in a fluidized bed at a temperature from 550° C. to 760° C. and a pressure from about 41.4 to about 308.2 kPa (about 6.0 to about 44.7 psia) and a catalyst to feed ratio, w/w, from 5 to 100 to form a dehydrogenate product; separating the dehydrogenate product and unreacted starting feed mixture from a portion of the catalyst by means of a cyclonic separation system; reactivating the catalyst in a fluidized regenerator by combustion at 660° C. to 850° C., followed by contact with an oxygen-containing fluid at 660° C. or greater, and returning the catalyst to the dehydrogenation reactor; (2) compressing the product mixture to form a compressed product mixture; and (3) fractionating the compressed product mixture to form a product stream including at least the target olefin or di-olefin. The integrated process offers increased plant capacity, improved economics, and reduced environmental impact in comparison with other known and conventional processes.

    Catalyst Regenerator and a Riser Terminator Used Therein
    30.
    发明申请
    Catalyst Regenerator and a Riser Terminator Used Therein 有权

    公开(公告)号：US20170087529A1

    公开(公告)日：2017-03-30

    申请号：US14870368

    申请日：2015-09-30

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Don F. Shaw ,  Richard E. Walter ,  Madhusudhan Kodam

    IPC: B01J8/24 ,  B01J38/30

    CPC classification number: B01J8/24 ,  B01J38/30 ,  B01J2208/00991 ,  C10G11/182

    Abstract: A catalyst regenerator for combusting carbonaceous deposits from a catalyst comprising a first chamber which comprises a catalyst inlet for feeding spent catalyst with carbonaceous deposits to said first chamber, a supplemental fuel gas distributor, and a distributor for an oxygen containing gas for distributing oxygen containing gas into said first chamber to contact said spent catalyst and combust carbonaceous deposits and supplemental fuel which further deactivates the spent catalyst and generates flue gas; a riser section extending from said first chamber for transporting the spent catalyst and the flue gas, the riser section comprising an outer wall, at least one slot in the outer wall, and a riser termination device which comprises a substantially internally flat cover plate, at least one arm extending from the cover plate, wherein the arm extends about the slot from the outer wall, the arm comprising an outer shell that encloses the arm and wherein no internal portion of the cover plate extends above an upper surface of the outer shell of the at least one arm is provided. Further provided is a riser termination device.

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