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.

    Processes for hydroprocessing and cracking crude oil

    公开(公告)号:US11814594B1

    公开(公告)日:2023-11-14

    申请号:US18064494

    申请日:2022-12-12

    IPC分类号: C10G69/04

    摘要: According to at least one aspect of the present disclosure, a process for processing a crude oil with an API between 25 and 29 degrees includes contacting the crude oil with one or more hydroprocessing catalysts to produce a hydroprocessed effluent. The hydroprocessed effluent is passed to an HS-FCC unit, where the hydroprocessed effluent is contacted with a cracking catalyst composition comprising nano-ZSM-5 zeolite and an ultrastable Y-type zeolite (USY zeolite) to form a cracked effluent comprising at least one product. The HS-FCC catalyst composition further comprises nano-ZSM-5 zeolite that has an average particle size of from 0.01 micrometers (μm) to 0.2 μm, USY zeolite impregnated with lanthanum, an alumina binder, colloidal silica, and a matrix material comprising Kaolin clay. The cracked effluent comprises at least olefins, aromatic compounds, or both.

    METHODS FOR PROCESSING CRUDE OILS TO FORM LIGHT OLEFINS

    公开(公告)号:US20220064555A1

    公开(公告)日:2022-03-03

    申请号:US17009039

    申请日:2020-09-01

    IPC分类号: C10G69/14

    摘要: A hydrocarbon material may be processed by a method that includes separating the hydrocarbon material into at least a lesser boiling point fraction, a medium boiling point fraction, and a greater boiling point fraction. The method may further include steam cracking at least a portion of the lesser boiling point fraction, catalytically cracking at least a portion of the medium boiling point fraction, and hydrocracking at least a portion of the greater boiling point fraction.