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    Processes for recovering LPG from a reforming-zone effluent
    1.
    发明授权
    Processes for recovering LPG from a reforming-zone effluent 有权

    公开(公告)号：US11441838B2

    公开(公告)日：2022-09-13

    申请号：US16278017

    申请日：2019-02-15

    Applicant: UOP LLC

    Inventor： Thuy T. Vu ,  Robert E. Tsai ,  Xin X. Zhu ,  Amit Goyal ,  William Yanez ,  Sudipta K. Ghosh

    IPC: F25J3/02 ,  C01B3/34 ,  C01B3/52 ,  C07C7/00

    Abstract: Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent into a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is separated for forming an H2-rich stream and a first liquid phase hydrocarbon stream. The H2-rich stream may be contacted with an adsorbent to form an H2-ultra rich stream and a gas stream. C3/C4 hydrocarbons are absorbed from the gas stream with the liquid phase hydrocarbon stream. The gas stream may be contacted with an H2/hydrocarbon separation membrane to separate the PSA tail gas stream and form an H2-rich permeate stream and an H2 depleted non-permeate residue stream.

    INTEGRATION OF NAPHTHA TO ETHANE AND PROPANE FRACTIONATION SECTION WITH ETHANE STEAM CRACKER
    3.
    发明公开
    INTEGRATION OF NAPHTHA TO ETHANE AND PROPANE FRACTIONATION SECTION WITH ETHANE STEAM CRACKER 审中-公开

    公开(公告)号：US20240190792A1

    公开(公告)日：2024-06-13

    申请号：US18508453

    申请日：2023-11-14

    Applicant: UOP LLC

    Inventor： Sudipta K. Ghosh ,  Xin X. Zhu ,  Kyle Cuellar

    IPC: C07C4/04

    CPC classification number: C07C4/04

    Abstract: A process of producing ethylene and propylene from naphtha, the process comprising: producing light paraffins—ethane, hydrogen/methane/residual ethane and propane rich streams—in a dividing wall fractionation column from a stream of hydrogen, methane, propane, and residual C4+ produced in the reactor section of a naphtha-to-ethane-and-propane processing unit by reacting naphtha with hydrogen, a naphtha reactor effluent stream produced by a naphtha reactor of the naphtha-to-ethane-and-propane processing unit is cooled to produce a feed stream. The feed stream is passed to a dividing wall fractionation column. An ethane stream from the dividing wall fractionation column is passed to an ethane steam cracker to produce a cracking heater effluent stream. The cracking heater effluent stream is passed to a coldbox of the ethane steam cracker after multiple steps such as quenching, compression, cooling, caustic scrubbing, drying. One or more fluids for cooling the naphtha (NEP) reactor effluent stream and for cooling the coldbox of the ethane steam cracker are provided by a common refrigeration system.

    PROCESSES FOR RECOVERING LPG FROM A REFORMING-ZONE EFFLUENT
    4.
    发明申请
    PROCESSES FOR RECOVERING LPG FROM A REFORMING-ZONE EFFLUENT 审中-公开

    公开(公告)号：US20200263922A1

    公开(公告)日：2020-08-20

    申请号：US16278017

    申请日：2019-02-15

    Applicant: UOP LLC

    Inventor： Thuy T. Vu ,  Robert E. Tsai ,  Xin X. Zhu ,  Amit Goyal ,  William Yanez ,  Sudipta K. Ghosh

    IPC: F25J3/02 ,  C01B3/34 ,  C01B3/52 ,  C07C7/00

    Abstract: Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent into a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is separated for forming an H2-rich stream and a first liquid phase hydrocarbon stream. The H2-rich stream may be contacted with an adsorbent to form an H2-ultra rich stream and a gas stream. C3/C4 hydrocarbons are absorbed from the gas stream with the liquid phase hydrocarbon stream. The gas stream may be contacted with an H2/hydrocarbon separation membrane to separate the PSA tail gas stream and form an H2-rich permeate stream and an H2 depleted non-permeate residue stream.

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