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    Processing Pyrolysis Tar Particulates
    21.
    发明申请
    Processing Pyrolysis Tar Particulates 有权

    公开(公告)号：US20210179954A1

    公开(公告)日：2021-06-17

    申请号：US17045416

    申请日：2019-03-20

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： John S. Coleman ,  Kendele S. Galvan ,  John J. Monson ,  Denise M. Burcham ,  Kapil Kandel

    IPC: C10G69/06 ,  C10G49/00 ,  C10G49/16 ,  C10G49/22

    Abstract: Systems and methods are provided for increasing the portion of a pyrolysis tar fraction that can be hydroprocessed by using a physical particle size reduction process on at least a portion of the pyrolysis tar fraction. The physical particle size reduction process can reduce the percentage of particles in the pyrolysis tar fraction that have a particle size of 75 μm or greater, or 50 μm or greater. It has been unexpectedly discovered that at least a portion of the particles having a size of 75 μm or less, or 50 μm or less, can be effectively hydroprocessed to form products of greater value while still reducing or minimizing the amount of fouling or plugging in a hydroprocessing catalyst bed. By increasing the number of particles having a size of 75 μm or less, or 50 μm or less, while selectively removing larger particles from the SCT fraction, a higher yield of hydrocarbon products can be achieved for a feed containing an SCT fraction. This can reduce or minimize the amount of particulates that are disposed of by incineration or another disposal method for fractions that have a lesser value.

    Self-Sulfiding of Guard Reactor Catalyst for Solvent Assisted Tar Conversion Processes
    24.
    发明申请
    Self-Sulfiding of Guard Reactor Catalyst for Solvent Assisted Tar Conversion Processes 审中-公开

    公开(公告)号：US20200063047A1

    公开(公告)日：2020-02-27

    申请号：US16544551

    申请日：2019-08-19

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Krystle J. Emanuele ,  Glenn A. Heeter ,  Kapil Kandel ,  Teng Xu

    IPC: C10G69/06 ,  B01J23/755 ,  B01J23/28 ,  B01J37/20 ,  C10G67/14 ,  C10G67/02

    Abstract: The present disclosure provides methods for hydroprocessing of heavy oils, such as pyrolysis tars. For example, a process for preparing a liquid hydrocarbon product includes providing a first process stream comprising a reduced reactivity tar, and blending the first process stream with a utility fluid to produce a second process stream comprising solids and a reduced reactivity, lower viscosity tar. The method can includes introducing the second process stream into a guard reactor without sulfiding the guard reactor catalyst(s) prior to introducing the second process stream into the guard reactor. The method includes hydroprocessing the second process stream in the guard reactor under mild hydroprocessing conditions to produce a third process stream. The method includes hydroprocessing the third process stream to produce a fourth process stream having a bromine number (BN) lower than 12 and comprising the liquid hydrocarbon product and the utility fluid.

    Pyrolysis Processes for Upgrading a Hydrocarbon Feed
    29.
    发明申请
    Pyrolysis Processes for Upgrading a Hydrocarbon Feed 有权

    公开(公告)号：US20240425768A1

    公开(公告)日：2024-12-26

    申请号：US18692245

    申请日：2022-10-03

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Mark A. Nierode ,  Rodney S. Smith ,  Michael A. Radzicki ,  Donald J. Norris ,  Kapil Kandel ,  Tania M. Almazan

    IPC: C10G55/04 ,  C10G25/00

    Abstract: Processes for upgrading a hydrocarbon for a predetermined period of time. The process can include determining an amount of one or more contaminant-containing compositions that will be present in a pyrolysis effluent based, at least in part, on a composition of a hydrocarbon feed to be steam cracked, a temperature the hydrocarbon feed will be heated at during steam cracking, a residence time the hydrocarbon feed will be heated at the temperature during steam cracking, or a combination thereof. In some examples, the process can also include taking one or more steps to allow the hydrocarbon feed to be steam cracked for at least as long as a predetermined period of time, controlling process conditions within one or more separation stages to favor certain product compositions, introducing a predetermined amount of one or more agents into various locations of the process, or any combination thereof.

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