PROCESS FOR RECOVERING MERCAPTANS, WITH SPECIFIC NI/NIO RATIO AND TEMPERATURE SELECTION

    公开(公告)号:US20250043199A1

    公开(公告)日:2025-02-06

    申请号:US18720522

    申请日:2022-12-12

    Abstract: The present invention relates to a process for trapping mercaptans contained in a sulfur-containing hydrocarbon feedstock which is optionally partially desulfurized, resulting from a step of catalytic hydrodesulfurization, at a temperature of between 170° C. and 220° C., a pressure of between 0.2 MPa and 5 MPa, at an hourly space velocity, defined as the volume flow rate of feedstock at the inlet per volume of trapping mass, of between 0.1 h−1 and 50 h−1, in the presence of a trapping mass comprising a nickel-based active phase with an Ni°/NiO ratio of between 0.25 and 4, and an inorganic support selected from the group consisting of alumina, silica, silica-alumina, and clays.

    POLYAMINE SORBENTS ON HIGH PORE VOLUME SUPPORTS

    公开(公告)号:US20250033027A1

    公开(公告)日:2025-01-30

    申请号:US18784280

    申请日:2024-07-25

    Abstract: Crystalline support materials are provided that can serve as supports for polyamines. The support materials have a combination of properties that unexpectedly allows supported polyamines to retain an increased or maximized amount of CO2 sorption capacity after incorporation of substantial amounts of the polyamine on the support material. This combination of properties can include having a high pore volume, a high ratio of mesopore volume to micropore volume, and a sufficiently high acidity. The ability to allow supported amine sorbents to retain additional CO2 sorption capacity is unexpected. Conventionally, even when high pore volume support materials are used to support an amine sorbent, only a limited amount of the amine sorbent can be supported on the support material before substantial losses of sorbent capacity occur relative to the amount of amine sorbent.

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