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    • 3. 发明授权
    • Preparation of alkyl sulfonates
    • 烷基磺酸盐的制备
    • US4382895A
    • 1983-05-10
    • US284710
    • 1981-07-20
    • Edward L. ColeRobert M. Suggitt
    • Edward L. ColeRobert M. Suggitt
    • C07C309/62C07C143/24
    • C07C309/62
    • A process for the production of petroleum sulfonates from lubricating oil extract fractions wherein a primary extract-solvent mixture, preferably substantially free from water, is cooled to a temperature at least 25.degree. C. below the extraction temperature to form two immiscible liquid phases comprising a secondary extract phase which is richer in aromatic hydrocarbons than the primary extract and a secondary raffinate phase which is poorer in aromatics than the primary extract. The secondary raffinate is sulfonated and the unsulfonated fraction returned to the separations process.The process results in improved yields of petroleum sulfonates with lowered SO.sub.3 consumption and less by-product sludge than conventional processes in which the entire extract fraction is sulfonated.
    • 从润滑油提取物馏分中生产石油磺酸盐的方法,其中将优选基本上不含水的初级萃取 - 溶剂混合物冷却至低于提取温度至少25℃的温度,以形成两个不混溶的液相,其包含 二级萃取相,其比一级提取物富含芳族烃,二级萃余相比芳族化合物比初级萃取物差。 二次萃余液被磺化,未磺化的馏分返回到分离过程。 与其中整个萃取馏分磺化的常规方法相比,该方法可以提高石油磺酸盐的产率,降低SO 3消耗量和较少的副产物污泥。