METHOD FOR REJUVENATING A CATALYST OF A HYDROPROCESSING AND/OR HYDROCRACKING PROCESS

    公开(公告)号:US20220062874A1

    公开(公告)日:2022-03-03

    申请号:US17414209

    申请日:2019-12-10

    Inventor: Elodie DEVERS

    Abstract: The invention concerns a method for rejuvenating an at least partially used catalyst originating from a hydroprocessing and/or hydrocracking process, the at least partially used catalyst being derived from a fresh catalyst comprising at least one group VIII metal (in particular, Co), at least one group VIB metal (in particular, Mo), an oxide support, and optionally phosphorus, the method comprising the steps: a) regenerating the at least partially used catalyst in a gas stream containing oxygen at a temperature between 300° C. and 550° C. so as to obtain a regenerated catalyst, b) then placing the regenerated catalyst in contact with phosphoric acid and an organic acid, each having acidity constant pKa greater than 1.5, c) performing a drying step at a temperature less than 200° C. without subsequently calcining it, so as to obtain a rejuvenated catalyst.

    PROCESS FOR THE HYDRODESULFURIZATION OF SULFUR-CONTAINING OLEFINIC GASOLINE CUTS USING A REGENERATED CATALYST

    公开(公告)号:US20220081627A1

    公开(公告)日:2022-03-17

    申请号:US17414437

    申请日:2019-12-10

    Abstract: The invention relates to a process for the hydrodesulfurization of a sulfur-containing olefinic gasoline cut in which said gasoline cut, hydrogen and a regenerated catalyst are brought into contact, said process being carried out at a temperature of between 200° C. and 400° C., a total pressure of between 1 and 3 MPa, an hourly space velocity, defined as being the flow rate by volume of feedstock relative to the volume of catalyst, of between 1 and 10 h−1; and a hydrogen/gasoline feedstock ratio by volume of between 100 and 1200 Sl/l, said regenerated catalyst resulting from an at least partially spent catalyst resulting from a process for the hydrodesulfurization of a sulfur-containing olefinic gasoline cut and comprises at least one metal from group VIII, at least one metal from group VIb and an oxide support.

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