System for steam cracking and PFO treatment integrating selective hydrogenation and selective hydrocracking

    公开(公告)号:US11459517B2

    公开(公告)日:2022-10-04

    申请号:US17226401

    申请日:2021-04-09

    发明人: Qi Xu Raed Abudawoud

    IPC分类号: C10G69/12 C10G65/12

    摘要: A process for treatment of PFO from a steam cracking zone includes selectively hydrogenating PFO or a portion thereof for conversion of polyaromatics compounds contained in the PFO into aromatic compounds with one benzene ring to produce a selectively hydrogenated stream. The selectively hydrogenated stream is selectively hydrocracked for selective ring opening and dealkylation to produce a selectively hydrocracked BTX+ stream. The selectively hydrocracked BTX+ stream is separated into BTX compounds. Optionally the PFO is separated into a first stream containing C9+ aromatics compounds with one benzene ring, and a second stream containing C10+ aromatic compounds, whereby the first stream containing C9+ aromatics compounds with one benzene ring is passed to the selective hydrocracking step, and the feed to the selective hydrogenation step comprises all or a portion of the second stream containing C10+ aromatic compounds.

    Steam-enhanced catalytic cracking of hydrocarbons to produce light olefins

    公开(公告)号:US11370975B2

    公开(公告)日:2022-06-28

    申请号:US17039998

    申请日:2020-09-30

    摘要: A steam-assisted catalytic cracking process for a hydrocarbon feed is provided. The process includes: introducing the hydrocarbon feed, a fluid catalytic cracking (FCC) catalyst, and steam to a FCC reactor with a mass ratio of steam to hydrocarbon feed between 0.05 and 1.0; cracking the hydrocarbon feed in the presence of the FCC catalyst and steam to produce a cracked hydrocarbon feed and spent FCC catalyst, the spent FCC catalyst comprising coke deposits and hydrocarbon deposits; stripping the hydrocarbon deposits from the spent FCC catalyst with steam in a stripper to obtain a hydrocarbon-stripped spent FCC catalyst; regenerating the hydrocarbon-stripped spent FCC catalyst in a regenerator by subjecting the stripped spent FCC catalyst to heat in the presence of oxygen to combust the coke deposits on the stripped spent FCC catalyst and produce a regenerated FCC catalyst; recycling the regenerated FCC catalyst.

    Continuous catalytic deasphalting process

    公开(公告)号:US11225617B1

    公开(公告)日:2022-01-18

    申请号:US16911800

    申请日:2020-06-25

    摘要: In accordance with one or more embodiments of the present disclosure, a continuous catalytic deasphalting process includes introducing a feed comprising crude oil and solvent to a first reactor to deasphalt the feed, producing polymerized asphaltene adsorbed to the catalyst and deasphalted oil; introducing solvent to a second reactor to regenerate catalyst in the second reactor while the deasphalting step is performed in the first reactor; introducing a wash solvent to the first reactor after deasphalting to remove the polymerized asphaltene, thereby regenerating the catalyst in the first reactor and producing a mixture comprising solvent and polymerized asphaltene; passing the mixture to a separator downstream of the reactor system to separate the wash solvent from the polymerized asphaltenes; and reintroducing at least a portion of the separated wash solvent to at least one of the first and second reactors.

    System and process for steam cracking and PFO treatment integrating selective hydrogenation, FCC and naphtha reforming

    公开(公告)号:US11220640B2

    公开(公告)日:2022-01-11

    申请号:US16668823

    申请日:2019-10-30

    发明人: Qi Xu Raed Abudawoud

    摘要: A process for treatment of PFO from a steam cracking zone includes selectively hydrogenating PFO or a portion thereof for conversion of polyaromatics compounds contained in the PFO into aromatic compounds with one benzene ring to produce a selectively hydrogenated stream. The selectively hydrogenated stream is reacted in a fluid catalytic cracking reactor for selective ring opening and dealkylation to produce fluid catalytic cracking including light cycle oil. In addition, a naphtha reformer is integrated, so that light cycle oil and a reformate stream are separated into BTX compounds. Optionally the PFO is separated into a first stream containing C9+ aromatics compounds with one benzene ring, and a second stream containing C10+ aromatic compounds, whereby the first stream containing C9+ aromatics compounds with one benzene ring is passed to the fluid catalytic cracking reactor, and the feed to the selective hydrogenation step comprises all or a portion of the second stream containing C10+ aromatic compounds.

    SYSTEM AND PROCESS FOR STEAM CRACKING AND PFO TREATMENT INTEGRATING SELECTIVE HYDROGENATION, SELECTIVE HYDROCRACKING AND NAPHTHA REFORMING

    公开(公告)号:US20210130717A1

    公开(公告)日:2021-05-06

    申请号:US16668424

    申请日:2019-10-30

    发明人: Qi Xu Raed Abudawoud

    IPC分类号: C10G69/14

    摘要: A process for treatment of PFO from a steam cracking zone includes selectively hydrogenating PFO or a portion thereof for conversion of polyaromatics compounds contained in the PFO into aromatic compounds with one benzene ring to produce a selectively hydrogenated stream. The selectively hydrogenated stream is selectively hydrocracked for selective ring opening and dealkylation to produce a selectively hydrocracked BTX+ stream. In addition, a naphtha reformer is integrated, so that the selectively hydrocracked BTX+ stream and a reformate stream are separated into BTX compounds. Optionally the PFO is separated into a first stream containing C9+ aromatics compounds with one benzene ring, and a second stream containing C10+ aromatic compounds, whereby the first stream containing C9+ aromatics compounds with one benzene ring is passed to the selective hydrocracking step, and the feed to the selective hydrogenation step comprises all or a portion of the second stream containing C10+ aromatic compounds.