REVERSE ISOMERIZATION PROCESS USING FEEDSTOCK CONTAINING DISSOLVED HYDROGEN

    公开(公告)号:US20240158704A1

    公开(公告)日:2024-05-16

    申请号:US18055531

    申请日:2022-11-15

    IPC分类号: C10G45/58 C10G55/06

    摘要: A process for reverse isomerization of a light naphtha feedstock containing branched C5-C7 paraffins. The process includes feeding a mixed feed stream including the light naphtha feedstock to a separation unit to generate an iso-paraffin stream and one or more normal paraffin streams. The process further includes mixing hydrogen gas and a hydrocarbon feed stream containing the iso-paraffin stream to form a hydrogen-enriched liquid feed stream which is provided to a reverse isomerization reactor. The hydrogen-enriched liquid feed stream is contacted with a solid reverse isomerization catalyst for reverse hydroisomerization in a substantially two-phase liquid-solid reverse isomerization fixed-bed reaction zone convert iso-paraffins to normal paraffins. The isomerization effluent stream is provided to a stabilization column to generate a stabilized isomerate stream which is combined with the light naphtha feedstock to generate the mixed feed stream. An associated system for performing the process is also provided.

    Two-stage hydrotreating of hydrocarbons

    公开(公告)号:US11866657B1

    公开(公告)日:2024-01-09

    申请号:US18051119

    申请日:2022-10-31

    IPC分类号: C10G65/04

    摘要: A method of processing a hydrocarbon feedstock may comprise hydrotreating the hydrocarbon feedstock in a low-severity hydrotreater to produce a first effluent and hydrotreating the first effluent, or a portion thereof, in a high-severity hydrotreater to produce a low contaminant product. The low-severity hydrotreater may operate at a catalyst volume of less than 60% of a catalyst volume of the high-severity hydrotreater. The low-severity hydrotreater may operate at a hydrogen partial pressure of at least 5 bar lower than the hydrogen partial pressure in the high-severity hydrotreater. The low-severity hydrotreater may operate at a weighted average bed temperature (WABT) of at least 5° C. less than the WABT of the high-severity hydrotreater.