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    Enhanced light olefin yield via steam catalytic downer pyrolysis of hydrocarbon feedstock
    80.
    发明授权
    Enhanced light olefin yield via steam catalytic downer pyrolysis of hydrocarbon feedstock 有权

    公开(公告)号：US11306258B2

    公开(公告)日：2022-04-19

    申请号：US16942350

    申请日：2020-07-29

    申请人： SAUDI ARABIAN OIL COMPANY

    发明人： Musaed Salem Al-Ghrami ,  Wei Xu ,  Aaron Chi Akah

    IPC分类号： C10G11/00 ,  C10G11/20 ,  C10G11/18 ,  C10G51/06 ,  C10G11/16 ,  C10G9/28

    摘要： Systems and methods for steam and catalytic cracking of a hydrocarbon inlet stream comprising hydrocarbons. Systems and methods can include a catalyst feed stream, where the catalyst feed stream comprises a fluid and a heterogeneous catalyst, the heterogeneous catalyst operable to catalyze cracking of the hydrocarbons on surfaces of the heterogeneous catalyst a steam feed stream, where the steam feed stream is operable to effect steam cracking of the hydrocarbons, and where the steam feed stream decreases coking of the heterogeneous catalyst; and a downflow reactor, where the downflow reactor is operable to accept and mix the hydrocarbon inlet stream, the catalyst feed stream, and the steam feed stream, where the downflow reactor is operable to produce light olefins by steam cracking and catalytic cracking, and where the downflow reactor is operable to allow the heterogeneous catalyst to flow downwardly by gravity.