Hydrofining-reforming process
    5.
    发明授权
    Hydrofining-reforming process 失效
    加氢改造工艺

    公开(公告)号:US3884797A

    公开(公告)日:1975-05-20

    申请号:US39593173

    申请日:1973-09-10

    Applicant: UNION OIL CO

    CPC classification number: C10G45/08 C10G2400/02 C10G2400/18 C10G2400/30

    Abstract: Hydrocarbon feedstocks containing organic sulfur are subjected to a two-stage hydrofining treatment. In the first stage a sulfided hydrofining catalyst is utilized to effect hydrodecomposition of the bulk of the sulfur compounds and produce an effluent containing, e.g., about 0.5-10 ppm of residual sulfur. In the second stage, the first stage product is contacted with a molybdenum-Group VIII metal hydrofining catalyst maintained at least partially in a reduced state, so as to effect a substantial and more efficient hydrodecomposition of the remaining sulfur compounds. The two-stage process is particularly useful for the pretreatment of naphtha feedstocks to a subsequent reforming step employing highly sulfur-sensitive catalysts such as the bimetallic platinum-rhenium-alumina composites.

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