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    MOVING BED LIGNOCELLULOSIC BIOMASS CONVERSION WITH FLUID BED CATALYST REGENERATION
    433.
    发明公开
    MOVING BED LIGNOCELLULOSIC BIOMASS CONVERSION WITH FLUID BED CATALYST REGENERATION 审中-公开

    公开(公告)号：US20240157347A1

    公开(公告)日：2024-05-16

    申请号：US18054281

    申请日：2022-11-10

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Sven Ivar HOMMELTOFT

    IPC: B01J23/92 ,  B01D15/18 ,  B01J21/04 ,  C08H8/00

    CPC classification number: B01J23/92 ,  B01D15/1828 ,  B01J21/04 ,  C08H8/00 ,  B01D2215/027 ,  B01J2523/23 ,  B01J2523/31

    Abstract: A process is provided for producing reduced acid lignocellulosic-derived bio-oil. treating a lignocellulosic biomass feedstock in a moving bed reactor with a metal oxide catalyst on an oxide support under treating conditions to produce a treated stream; directing spent metal oxide catalyst from the moving bed reactor to a fluidized bed regenerator, the spent metal oxide catalyst resulting from treating the lignocellulosic biomass feedstock with the metal oxide catalyst; regenerating the spent metal oxide catalyst in the fluidized bed regenerator by removing coke from the spent metal oxide catalyst in a combustion process that regenerates the spent metal oxide catalyst into the metal oxide catalyst; and returning to the moving bed reactor the metal oxide catalyst that has been regenerated in the fluidized bed regenerator. The obtained bio-oil is particularly suitable as a renewable feedstock for hydroprocessing in biofuel manufacture.

    HIGH NANOPORE VOLUME HYDROTREATING CATALYST AND PROCESS
    434.
    发明公开
    HIGH NANOPORE VOLUME HYDROTREATING CATALYST AND PROCESS 审中-公开

    公开(公告)号：US20240149250A1

    公开(公告)日：2024-05-09

    申请号：US18550116

    申请日：2022-03-10

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Yihua ZHANG ,  Guan-Dao LEI

    IPC: B01J23/44 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J35/63 ,  B01J35/64 ,  C10G45/52

    CPC classification number: B01J23/44 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J35/633 ,  B01J35/647 ,  C10G45/52 ,  C10G2300/1096 ,  C10G2300/70

    Abstract: An improved hydrotreating catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes a high nanopore volume amorphous silica alumina (ASA) and an alumina. The catalyst and process generally involve the use of a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.2 to 0.9 cc/g and an alumina having, a pore volume in the 11-20 nm pore diameter range of 0.01 to 1.0 cc/g, with the base extrudate formed from the amorphous silica alumina and the alumina having a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst further comprises at least one modifier element from Groups 6 to 10 and Group 14 of the Periodic Table. The catalyst and process provide improved aromatics saturation.

    SYNTHESIS OF ALUMINUM-CONTAINING MOLECULAR SIEVE SSZ-60
    436.
    发明公开
    SYNTHESIS OF ALUMINUM-CONTAINING MOLECULAR SIEVE SSZ-60 审中-公开

    公开(公告)号：US20240140811A1

    公开(公告)日：2024-05-02

    申请号：US17964981

    申请日：2022-10-13

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Christopher Michael LEW

    IPC: C01B39/24 ,  C01B39/04

    CPC classification number: C01B39/24 ,  C01B39/04

    Abstract: A method for preparing an aluminosilicate molecular sieve having the SSY framework structure is described. The method includes (1) a step of preparing a reaction mixture containing an aluminosilicate zeolite having an FAU framework type; N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium cations and/or N-ethyl-N-(2,4,4-trimethylcyclopentyl)pyrrolidinium cations; an alkali metal; hydroxide ions; seed crystals; and water; and (2) a step of subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the aluminosilicate molecular sieve. The resulting molecular sieves are useful as catalysts, particularly when used in combination with exchanged transition metal(s).

    SYSTEM AND METHOD FOR SEISMIC AMPLITUDE ANALYSIS
    437.
    发明公开
    SYSTEM AND METHOD FOR SEISMIC AMPLITUDE ANALYSIS 审中-公开

    公开(公告)号：US20240125956A1

    公开(公告)日：2024-04-18

    申请号：US18046236

    申请日：2022-10-13

    Applicant: Chevron U.S.A. Inc.

    Inventor： Yonghe J. Sun

    IPC: G01V1/28 ,  G01V1/30

    CPC classification number: G01V1/282 ,  G01V1/307

    Abstract: A method is described for seismic amplitude analysis that uses a set of artificial and individually separable reflectors consistent with dip fields in the subsurface volume of interest to define an AVA basis functions; the AVA basis functions are used in true-3D AVA modeling and true-3D AVA inversion. The inversion result and well logs representative of the subsurface volume of interest are used to train a model to create a rock property prediction model. The method may apply the rock property prediction model to a second seismic image to generate a rock property volume. The method is executed by a computer system.

    SYSTEM AND METHOD FOR SALT REMOVAL FROM SOLID MEDIA
    439.
    发明公开
    SYSTEM AND METHOD FOR SALT REMOVAL FROM SOLID MEDIA 审中-公开

    公开(公告)号：US20240109105A1

    公开(公告)日：2024-04-04

    申请号：US18481180

    申请日：2023-10-04

    Applicant: Chevron U.S.A. Inc.

    Inventor： Joonkyoung Han ,  John B. Trenery, JR.

    IPC: B08B3/04 ,  B08B13/00 ,  E21B21/06

    CPC classification number: B08B3/042 ,  B08B13/00 ,  E21B21/065

    Abstract: A process for reducing the salinity of salt containing material (SCM) includes introducing the SCM into a wash system configured to sequentially wash the SCM with water having decreasing salinity levels across a plurality of mixing tanks arranged in series; introducing feed water into the wash system in a countercurrent flow relative to the SCM; discharging washed SCM from the wash system, the washed SCM having a lower salinity compared to the SCM that is initially introduced into the wash system; and discharging brine from the wash system, the brine being generated in a mixing tank that initially receives the SCM into the wash system.

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