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    • 64. 发明申请
    • Enhanced solvent deasphalting process for heavy hydrocarbon feedstocks utilizing solid adsorbent
    • 使用固体吸附剂的重质烃原料的增强溶剂脱沥青方法
    • US20080093260A1
    • 2008-04-24
    • US11584771
    • 2006-10-20
    • Omer Refa Koseoglu
    • Omer Refa Koseoglu
    • C10G67/04
    • C10G21/003C10G25/00C10G25/003C10G25/05
    • A solvent deasphalting of crude oil or petroleum heavy fractions and residues is carried out in the presence of a solid adsorbent, such as clay, silica, alumina and activated carbon, which adsorbs the contaminants and permits the solvent and oil fraction to be removed as a separate stream from which the solvent is recovered for recycling; the adsorbent with contaminants and the asphalt bottoms is mixed with aromatic and/or polar solvents to desorb the contaminants and washed as necessary, e.g., with benzene, toluene, xylenes and tetrahydrofuran, to clean adsorbant which is recovered and recycled; the solvent-asphalt mixture is sent to a fractionator for recovery and recycling of the aromatic or polar solvent. The bottoms from the fractionator include the concentrated PNA and contaminants and are further processes as appropriate.
    • 原油或石油重馏分和残余物的溶剂脱沥青在固体吸附剂如粘土,二氧化硅,氧化铝和活性炭的存在下进行,其吸附污染物并允许将溶剂和油馏分作为 回收溶剂的回收分离物流; 具有污染物的吸附剂和沥青底部物质与芳族和/或极性溶剂混合以解吸污染物并根据需要例如用苯,甲苯,二甲苯和四氢呋喃洗涤以清洁回收和再循环的吸附剂; 将溶剂 - 沥青混合物送至分馏器以回收和再循环芳族或极性溶剂。 来自分馏器的塔底物包括浓缩的PNA和污染物,并且是适当的进一步的方法。