公开(公告)号：US20240157320A1

公开(公告)日：2024-05-16

申请号：US18054293

申请日：2022-11-10

Applicant: Chevron U.S.A. Inc.

Inventor： Steven Xuqi Song ,  Sven Ivar Hommeltoft

IPC: B01J8/26 ,  B01J8/00 ,  B01J29/90

CPC classification number: B01J8/26 ,  B01J8/0055 ,  B01J29/90

Abstract: A reactor system includes a moving bed reactor that treats a lipid feedstock using a metal oxide catalyst to produce a treated stream comprising a bio-oil. The reactor system further includes a fluidized bed regenerator that regenerates spent metal oxide catalyst from the treating process in the moving bed reactor. Once the spent metal oxide catalyst is regenerated into metal oxide catalyst, it is returned to the moving bed reactor. The metal oxide catalyst returned to the moving bed reactor can contribute heat to the lipid feedstock to raise the lipid feedstock to a reaction temperature.

公开(公告)号：US20240157274A1

公开(公告)日：2024-05-16

申请号：US18511835

申请日：2023-11-16

Applicant: CHEVRON U.S.A. INC.

Inventor： Steven Xuqi SONG ,  Blaine HOLMES ,  Wayne MUNSTERMAN ,  Tom BERRY ,  Xiaohui ZHANG ,  Deanne KELLY ,  Ali VAKIL ,  Ehsan ZAMAN ,  Marvin WEISS ,  Matthew D. POLAND ,  Brian HANSON

IPC: B01D19/00 ,  B01L5/02

CPC classification number: B01D19/0057 ,  B01L5/02 ,  B01L2300/0681 ,  B01L2400/0463

Abstract: A gas-liquid separator, adapted for separating liquid and gas in an ebullated bed reactor under operating conditions, is disclosed. The device may be used in the petroleum and chemical processing industries in catalytic reactions of hydrocarbonaceous feedstocks in the presence of hydrogen, at an elevated temperature and pressure, to separate gas and liquid from gas and liquid mixtures within the reactor. The device is generally vertically oriented and may be installed in the flow through pan of an ebullated bed reactor. The device comprises a transfer conduit for transferring a gas-liquid mixture stream from a lower section of an ebullated bed reactor to an upper section of the reactor, a vortex separation section having gas-rich and liquid-rich stream outlets, and a gas-rich stream outlet conduit located on top of and adjacent to the vortex separation section. The transfer conduit includes internal means to produce a spiral flow in the gas-liquid mixture, such as a helical or spiral insert. The vortex separation section is located at the top of the transfer conduit and includes separation means to separate the gas-liquid mixture stream into a liquid-rich stream and a gas-rich stream. A separator conduit extending from the top of the vortex separation section to the transfer conduit upper opening, aligned with and having substantially the same cross-sectional dimensions as the gas-rich stream outlet, may be used as the separation means. Among the benefits provided are improved efficiency of gas and liquid separation and reduced gas holdup within the reactor.

公开(公告)号：US20240151867A1

公开(公告)日：2024-05-09

申请号：US17982089

申请日：2022-11-07

Applicant: Chevron U.S.A. Inc.

Inventor： Lewis Li ,  Tao Sun

IPC: G01V1/30

CPC classification number: G01V1/306 ,  G01V1/308

Abstract: A subsurface representation of a subsurface region includes cells that define subsurface propert(ies) at different locations within the subsurface region. Initial classification of rock types within portions of the subsurface representation is obtained and used to determine probability distributions of the subsurface propert(ies) for the rock types. The probability distributions of the subsurface propert(ies) for the rock types and a spatial distribution of rock types within the subsurface representation are used in an iterative process to determine classification of rock types within the subsurface representation.

公开(公告)号：US11976521B2

公开(公告)日：2024-05-07

申请号：US17631816

申请日：2020-07-30

Applicant: Chevron U.S.A. Inc.

Inventor： James Daniel Montoya

IPC: E21B17/10

CPC classification number: E21B17/1021 ,  E21B17/1028 ,  E21B17/1057

Abstract: A centralizer for use in high speed rotor dynamics applications includes a housing having a first end portion and a second end portion. The centralizer further includes a rotatable shaft positioned within a cavity of the housing. The centralizer also includes flexure springs that are each attached to and extend between the first end portion and the second end portion. The flexure springs are compressible toward a middle portion of the housing that is between the first end portion and the second end portion. The centralizer further includes roller wheels attached to the flexure springs.

公开(公告)号：US20240141238A1

公开(公告)日：2024-05-02

申请号：US18498612

申请日：2023-10-31

Applicant: CHEVRON U.S.A. INC.

Inventor： Stephen J. HARLEY ,  Rachel MOHLER ,  Peter Hillman ,  Samin Sharifiasl

IPC: C10G27/04 ,  G01N30/06 ,  G01N30/02 ,  G01N30/88

CPC classification number: C10G27/04 ,  G01N30/06 ,  C10G2300/202 ,  G01N2030/025 ,  G01N2030/067 ,  G01N2030/8854

Abstract: The present invention is directed to a method of selectively reacting and removing disulfides and reducing corrosivity in petroleum matrixes with an acid wash composition.

公开(公告)号：US20240103510A1

公开(公告)日：2024-03-28

申请号：US18271986

申请日：2022-01-13

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY ,  CHEVRON U.S.A. Inc.

Inventor： Virisha Timmaraju ,  Eric Junkins ,  Valentinos Constantinou ,  Asitang Mishra ,  Sakthivel Kandasamy

IPC: G05B23/02

CPC classification number: G05B23/027 ,  G05B23/0275

Abstract: Relationships between alarms are modeled using a graph to identify root cause of a sequence of alarms (an alarm flood). The nodes of the graph represent different alarms, and the edges between the nodes are scored using pairwise analysis of when the alarms occurred. The graph is divided into multiple subgraphs representing alarm clusters. Root cause analysis of the sequence of alarms is performed by generating and simplifying directed graphs for events within the alarm clusters.

公开(公告)号：US20240101913A1

公开(公告)日：2024-03-28

申请号：US18270202

申请日：2021-12-29

Applicant: CHEVRON U.S.A. INC.

Inventor： Ling JIAO ,  Bi-Zheng ZHAN ,  Don BUSHEE ,  Theodorus Ludovicus Michael MAESEN ,  Hye-Kyung TIMKEN ,  Richard DUTTA ,  Jay PAREKH

IPC: C10G65/12 ,  C10G7/00 ,  C10G47/14

CPC classification number: C10G65/12 ,  C10G7/00 ,  C10G47/14 ,  C10G2300/107 ,  C10G2300/1074 ,  C10G2300/4006 ,  C10G2300/4081

Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.

公开(公告)号：US20240100513A1

公开(公告)日：2024-03-28

申请号：US18269915

申请日：2021-12-20

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Adeola OJO ,  Guan-Dao LEI

IPC: B01J37/04 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J23/83 ,  B01J23/89 ,  C10G45/64

CPC classification number: B01J37/04 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J23/83 ,  B01J23/894 ,  C10G45/64 ,  B01J35/026

Abstract: A method for making a hydroisomerization catalyst having improved thermal stability and metal dispersion characteristics, the catalyst prepared therefrom, and a process for making a base oil product using the catalyst are disclosed. The catalyst is prepared from a composition comprising an SSZ-91 molecular sieve and a rare earth modified alumina, with the composition being modified to contain a Group 8-10 metal, typically through impregnation of a Group 8-10 metal composition. The catalyst may be used to produce dewaxed base oil products by contacting the catalyst under hydroisomerization conditions with a hydrocarbon feedstock.

公开(公告)号：US11928565B2

公开(公告)日：2024-03-12

申请号：US18049149

申请日：2022-10-24

Applicant: Chevron U.S.A. Inc. ,  University of Southern California

Inventor： Yining Dong ,  Alisha Deshpande ,  Yingying Zheng ,  Lisa Ann Brenskelle ,  Si-Zhao Qin

IPC: G06N20/00 ,  G05B19/406 ,  G05B19/408 ,  G05B19/418 ,  G06F9/445 ,  G06F9/455 ,  G06F9/54 ,  G06F18/2135 ,  G06F18/23 ,  G06N7/00

CPC classification number: G06N20/00 ,  G05B19/406 ,  G05B19/408 ,  G05B19/41885 ,  G06F9/542 ,  G06F18/2135 ,  G06F18/23

Abstract: Methods and systems for building and maintaining model(s) of a physical process are disclosed. One method includes receiving training data associated with a plurality of different data sources, and performing a clustering process to form one or more clusters. For each of the one or more clusters, the method includes building a data model based on the training data associated with the data sources in the cluster, automatically performing a data cleansing process on operational data based on the data model, and automatically updating the data model based on updated training data that is received as operational data. For data sources excluded from the clusters, automatic building, data cleansing, and updating of models can also be applied.

公开(公告)号：US11906505B2

公开(公告)日：2024-02-20

申请号：US17668463

申请日：2022-02-10

Applicant: CHEVRON U.S.A. INC.

Inventor： Meir R. Hasbani ,  Michelle K. Young

IPC: C10L1/04 ,  G01T1/20 ,  G01N33/28

CPC classification number: G01N33/2882 ,  C10L1/04 ,  G01T1/20 ,  C10G2300/4037 ,  C10L2200/0407 ,  C10L2200/0476 ,  C10L2290/60

Abstract: A method of monitoring renewable carbon in fuel streams in a refinery or blend facility while co-processing a bio-feedstock with a fossil feedstock or blending a renewable product with a fossil product wherein the method provides for quantification of renewable C14 carbon content to adjust the total renewable content to a targeted renewable content in situ while lowering the limit of detection.