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    INTELLIGENT SYSTEM FOR IDENTIFYING SENSOR DRIFT
    2.
    发明申请
    INTELLIGENT SYSTEM FOR IDENTIFYING SENSOR DRIFT 有权

    公开(公告)号：US20210018347A1

    公开(公告)日：2021-01-21

    申请号：US16930786

    申请日：2020-07-16

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： George A. Khoury ,  Erin S. Percell ,  Mohsen N. Harandi ,  Nicholas W. Silvestri

    IPC: G01D21/02 ,  G06N3/08 ,  G06N3/04

    Abstract: A method for identifying sensor drift can include: setting an autocorrelation threshold for a sensor in a long-short term memory (LSTM) model developed based on historical process measurements from an analogous sensor to a sensor; collecting measured data from the sensor; applying the LSTM model to the measured data from the sensor, wherein applying the LSTM model comprises: applying the LSTM model to the measured data from the sensor to yield LSTM predicted data; calculating key performance indicators (KPIs) of the LSTM data based on an accumulated slow drift error (ASDE) model, wherein the KPIs comprise an error, an accumulated prediction error, an accumulated slow-drift error, and an estimated autocorrelation; and identifying sensor drift when the estimated autocorrelation violates the autocorrelation threshold.

    Carbon capture, waste upgrade, and chemicals production using improved flexicoking
    7.
    发明授权
    Carbon capture, waste upgrade, and chemicals production using improved flexicoking 有权

    公开(公告)号：US11014810B1

    公开(公告)日：2021-05-25

    申请号：US16775610

    申请日：2020-01-29

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Martin De Wit ,  Mohsen N. Harandi

    IPC: C01B3/12 ,  C07C29/151 ,  C01B3/02 ,  C01B3/50 ,  C01C1/04

    Abstract: Systems and methods are provided for integrating a fluidized coking operation, a reverse osmosis operation, a coke gasification operation and/or processes for production of compounds from the synthesis gas generated during the coke gasification. Conventional FLEXICOKING™ processes may produce carbon dioxide emissions and low Joule Flexigas, as well as waste water containing metals and poor quality coke containing metals, which may be expensive to process, or may require sending to other facilities for further processing. The systems and methods described herein address these issues in an advantageous and economical manner, with improved carbon capture, waste upgrade and chemicals production, while providing high value ash (e.g., for recovery of metals such as vanadium, nickel, sodium, iron, and mixtures thereof) and upgraded coke streams.

    Fluidized coking with increased production of liquids
    10.
    发明授权
    Fluidized coking with increased production of liquids 有权

    公开(公告)号：US10400177B2

    公开(公告)日：2019-09-03

    申请号：US15812396

    申请日：2017-11-14

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Tien V. Le ,  Brenda A. Raich ,  Bing Du ,  Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan

    IPC: C07C2/06 ,  C07C4/04 ,  C10J3/84 ,  C10B49/22 ,  C10B55/10 ,  C07C29/151

    Abstract: Systems and methods are provided for integrating a fluidized coking process, optionally a coke gasification process, and processes for production of additional liquid products from the coking and/or gasification process. In some aspects, the integrated processes can allow for conversion of olefins generated during a fluidized coking process to form additional liquid products. Additionally or alternately, in some aspects the integrated processes can allow for separation of syngas from the flue gas/fuel gas generated by a gasifier integrated with a fluidized coking process. This syngas can then be used to form methanol, which can then be converted in a methanol conversion process to form heavier products. In such aspects, olefins generated during the fluidized coking process can be added to the methanol conversion process to improve the yield. Additionally, in various aspects, the off-gas from the integrated conversion process can be used as an additional paraffin feed that can be recycled to one of the heat integration conduits in the fluidized coker for additional generation of olefins. This can provide a further increase in liquid yields using a carbon source (C4− paraffins) that is conventionally viewed as a low value product from coking.

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