中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.014 seconds)

    METHANE PYROLYSIS USING STACKED FLUIDIZED BEDS
    2.
    发明申请
    METHANE PYROLYSIS USING STACKED FLUIDIZED BEDS 有权

    公开(公告)号：US20210331918A1

    公开(公告)日：2021-10-28

    申请号：US17236418

    申请日：2021-04-21

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Ramesh Gupta ,  Hugo S. Caram ,  Anjaneya S. Kovvali ,  Sumathy Raman ,  David C. Dankworth

    IPC: C01B3/30 ,  B01J8/00 ,  B01J8/18 ,  B01J8/24

    Abstract: Systems and methods are provided for conversion of methane and/or other hydrocarbons to hydrogen by pyrolysis while reducing or minimizing production of carbon oxides. The conversion of hydrocarbons to hydrogen is performed in one or more pyrolysis or conversion reactors that contain a plurality of sequential fluidized beds. The fluidized beds are arranged so that the coke particles forming the fluidized bed move in a counter-current direction relative to the gas phase flow of feed (e.g., methane) and/or product (H2) in the fluidized beds. By using a plurality of sequential fluidized beds, the heat transfer and management benefits of fluidized beds can be realized while also at least partially achieving the improved reaction rates that are associated with a plug flow or moving bed reactor.

    REACTOR FOR CARBON NANOTUBE AND NANOFIBER PRODUCTION
    5.
    发明申请
    REACTOR FOR CARBON NANOTUBE AND NANOFIBER PRODUCTION 有权

    公开(公告)号：US20220185670A1

    公开(公告)日：2022-06-16

    申请号：US17124113

    申请日：2020-12-16

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Ramesh Gupta ,  Sumathy Raman ,  Amrit Jalan ,  Hugo S. Caram ,  David C. Dankworth

    IPC: C01B32/162 ,  B01J6/00

    Abstract: Systems and methods are provided for production of carbon nanotubes and H2 using a reaction system configuration that is suitable for large scale production. In the reaction system, a substantial portion of the heat for the reaction can be provided by using a heated gas stream. Optionally, the heated gas stream can correspond to a heated H2 gas stream. By using a heated gas stream, when the catalyst precursors for the floating catalyst—chemical vapor deposition (FC-CVD) type catalyst are added to the gas stream, the gas stream can be at a temperature of 1000° C. or more. This can reduce or minimize loss of catalyst precursor material and/or deposition of coke on sidewalls of the reactor. Additionally, a downstream portion of the reactor can include a plurality of flow channels of reduced size that are passed through a heat exchanger environment, such as a shell and tube heat exchanger. This can provide cooling of the gas flow after catalyst formation to allow for carbon nanotube formation, while also reducing the Reynolds number of the flow sufficiently to provide laminar flow within the region where carbon nanotubes are formed.

    POROUS WALL REACTOR FOR GENERATING HYDROGEN AND SOLID CARBON
    6.
    发明申请
    POROUS WALL REACTOR FOR GENERATING HYDROGEN AND SOLID CARBON 有权

    公开(公告)号：US20210147229A1

    公开(公告)日：2021-05-20

    申请号：US17088267

    申请日：2020-11-03

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Robert D. Kaminsky ,  David C. Dankworth

    IPC: C01B3/36

    Abstract: Apparatuses and methods are provided for generating elemental hydrogen and carbon from a hydrocarbon feed. In some examples, the apparatus can include a first tube and a second tube. The first tube can be configured to carry a hydrocarbon feed along a first flow path. The second tube can be configured to carry a fuel and an oxygen-containing gas along a second flow path, where the first flow path and second flow path are countercurrent. A porous wall can sperate the first tube from the second tube where the porous wall can be configured to allow heat and gas to pass from the second tube to the first tube.

Patent Agency Ranking