Duo-sol process with split feed of polar solvent
    27.
    发明授权
    Duo-sol process with split feed of polar solvent 失效
    具有极性溶剂分离进料的DUO-SOL方法

    公开(公告)号:US3682815A

    公开(公告)日:1972-08-08

    申请号:US3682815D

    申请日:1970-07-27

    Applicant: UNION OIL CO

    CPC classification number: C10G21/003 C10G21/04

    Abstract: A DUO-SOL PROCESS WHEREIN A RESIDUUM IS SUBJECTED TO A COUNTERCURRENT LIQUID-LIQUID EXTRACTION PROCESS UTILIZING A PARAFFINIC SOLVENT TO EXTRACT PARAFFINS AND A POLAR SOLVENT TO EXTRACT AROMATICS, NAPHTHENES AND ASPHALTENES IS IMPROVED BY INTRODUCING 5-50 PERCENT OF THE POLAR SOLVENT INTO THE RESIDUM FEED STAGE. IN ANOTHER EMOBDIMENT, 1-5 PERCENT OF THE POLAR SOLVENT IS INTRODUCED INTO THE PARAFFINIC SOLVENT FEED STAGE. THE INVENTION IS PARTICULARLY USEFUL WHEREIN THE RESIDUUM CONTAINS A RELATIVELY HIGH AMOUNT OF ASPHALTENES.

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