中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

90 records (took 0.026 seconds)

    PLATE GRID DISTRIBUTORS AND METHODS OF USING THE SAME
    51.
    发明公开
    PLATE GRID DISTRIBUTORS AND METHODS OF USING THE SAME 审中-公开

    公开(公告)号：US20240316522A1

    公开(公告)日：2024-09-26

    申请号：US18573165

    申请日：2022-06-24

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard E. Walter ,  Albert Meza ,  Fermin Sandoval ,  Liwei Li

    IPC: B01J8/44

    CPC classification number: B01J8/44 ,  B01J2208/00884 ,  B01J2208/0092 ,  B01J2208/00938

    Abstract: According to one or more embodiments, a plate grid distributor for distributing a fluid in a vessel may include a plate and an internal support system. The internal support system may include a plurality of pillar supports extending vertically from at or near a bottom surface of the plate towards a floor of the vessel. One or more of the pillar supports may include a flexible upper member connecting a rigid top support bracket to a rigid intermediate beam and a flexible lower member connecting the rigid intermediate beam to the rigid base support. According to one or more other embodiments, a method of distributing a fluid through a plate grid distributor in a vessel may include passing the fluid into the vessel below the plate grid distributor and directing the fluid through the plate gird distributor.

    METHODS FOR CONTROLLING CATALYST FLOW IN FLUIDIZED CATALYTIC PROCESSING SYSTEMS
    52.
    发明公开
    METHODS FOR CONTROLLING CATALYST FLOW IN FLUIDIZED CATALYTIC PROCESSING SYSTEMS 审中-公开

    公开(公告)号：US20240307839A1

    公开(公告)日：2024-09-19

    申请号：US18547031

    申请日：2022-03-21

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Adam M. McNeeley ,  Yang Yang

    IPC: B01J8/18 ,  B01J8/00 ,  B01J8/28

    CPC classification number: B01J8/1809 ,  B01J8/0055 ,  B01J8/28 ,  B01J2208/00548 ,  B01J2208/027

    Abstract: According to one or more embodiments, the flow of catalyst in a fluidized catalytic processing system may be controlled by a method including determining the amount of catalyst present in a first catalyst bed of the fluidized catalytic processing system. The fluidized catalytic processing system may include a first catalyst bed, a second catalyst bed, a third catalyst bed, and a fourth catalyst bed. The method may include comparing the amount of catalyst present in the first catalyst bed with a threshold catalyst amount. When the amount of catalyst present in the first catalyst bed is less than the threshold catalyst amount, the method may include regulating flow of catalyst from the second catalyst bed to the third catalyst bed such that an increased target amount of catalyst is maintained in the second catalyst bed.

    SYSTEMS AND METHODS FOR PRODUCING OLEFINS
    54.
    发明公开
    SYSTEMS AND METHODS FOR PRODUCING OLEFINS 审中-公开

    公开(公告)号：US20240034700A1

    公开(公告)日：2024-02-01

    申请号：US18257329

    申请日：2021-12-14

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard Edwards Walter ,  Fermin Alejandro Sandoval

    IPC: C07C5/32 ,  B01D45/16 ,  B01J8/00 ,  B01J8/18 ,  B01J8/26

    CPC classification number: C07C5/325 ,  B01D45/16 ,  B01J8/0055 ,  B01J8/1827 ,  B01J8/26 ,  B01J2208/00769

    Abstract: According to one or more embodiments, olefins may be produced by contacting a hydrocarbon feed stream with a particulate solid in a reaction vessel. The reaction vessel may be connected to a riser. The riser may extend through a riser port of an outer shell of a particulate solid separation section such that the riser may comprise an interior riser segment and an exterior riser segment. The particulate solid separation section may include a gas outlet port, a riser port, and a particulate solid outlet port. The particulate solid separation section may house a gas/solids separation device and a solid particulate collection area. The riser port may be positioned on a sidewall of the outer shell such that it is not located on a central vertical axis of the particulate solid separation section. The particulate solid may be separated from an olefin-containing product stream in the gas/solids separation device.

    FLUIDIZATION ENHANCERS FOR THE OXIDATIVE DEHYDROGENATION OF HYDROCARBONS
    57.
    发明申请
    FLUIDIZATION ENHANCERS FOR THE OXIDATIVE DEHYDROGENATION OF HYDROCARBONS 有权

    公开(公告)号：US20230089190A1

    公开(公告)日：2023-03-23

    申请号：US17800756

    申请日：2021-02-19

    Applicant: Dow Global Technologies LLC ,  EcoCatalytic Inc.

    Inventor： Elena Y. Chung ,  John A. Sofranko ,  William K. Wang ,  Soumen Kundu ,  Hangyao Wang ,  Barry B. Fish ,  Matthew T. Pretz

    IPC: C07C5/48 ,  C10G27/04

    Abstract: A process for oxidative dehydrogenation of a hydrocarbon to produce an olefin and water may include contacting, in a fluidized bed, the hydrocarbon with a particulate material, which may include at least one oxygen transfer agent (OTA) and at least one fluidization enhancing additive. During at least a portion of contacting the hydrocarbon with the particulate material, the fluidized bed may be at a temperature at or above a melting point of one or more materials of the oxygen transfer agent. Further, during at least a portion of contacting the hydrocarbon with the particulate material, a surface of at least a portion of the OTA may comprise a molten layer. The fluidization enhancing additive may not undergo reduction in the fluidized bed during contacting the hydrocarbon with the particulate material and may be present in an amount that maintains sufficient fluidization of the particulate material.

    Processes for commencing operations of fluidized catalytic reactor systems
    58.
    发明授权
    Processes for commencing operations of fluidized catalytic reactor systems 有权

    公开(公告)号：US11596914B2

    公开(公告)日：2023-03-07

    申请号：US17256690

    申请日：2019-06-26

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz

    IPC: B01J8/26 ,  C10G11/18 ,  B01J8/00 ,  B01J8/12 ,  C10G2/00 ,  C10G9/32 ,  C10G11/22

    Abstract: A process for commencing a continuous reaction in a reactor system includes introducing a catalyst to a catalyst processing portion of the reactor system, the catalyst initially having a first temperature of 500 C or less, and contacting the catalyst at the first temperature with a commencement fuel gas stream, which includes at least 80 mol % commencement fuel gas, in the catalyst processing portion. Contacting of the catalyst with the commencement fuel gas stream causes combustion of the commencement fuel gas. The process includes maintaining the contacting of the catalyst with the commencement fuel gas stream until the temperature of the catalyst increases from the first temperature to a second temperature at which combustion of a regenerator fuel source maintains an operating temperature range in the catalyst processing portion.

Patent Agency Ranking