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    • 7. 发明授权
    • Algae aggregation and harvesting
    • 藻类聚集和收获
    • US08980618B2
    • 2015-03-17
    • US14055123
    • 2013-10-16
    • Ramesh Varadaraj
    • Ramesh Varadaraj
    • C12N1/12
    • C12N1/12
    • Methods are provided for separating algae from an aqueous environment. An aqueous feed containing algae can be aged for a period of at least about 90 hours without purging or other aeration. The aging of the aqueous feed can result in formation of aggregated algae, which can then be filtered under pressure. Due to the larger size of the algae aggregates, the pressurized filtration can reduce/minimize the tendency to clog the filter, as the algae aggregates can generally be too large to fit within the pores of the filter. The filter can preferably be located at the bottom of the vessel holding the aqueous feed. This can assist in allowing the algae to remain in a cake above the filter, as opposed to having the algae dissolve back into the aqueous feed.
    • 提供了从水性环境中分离藻类的方法。 包含藻类的含水饲料可以老化至少约90小时,而不需要吹扫或其他通气。 水性饲料的老化可导致聚集的藻类的形成,然后可以在压力下过滤。 由于藻类聚集体的尺寸较大,加压过滤可以减少/最小化堵塞过滤器的趋势,因为藻类聚集体通常可能太大而不适合于过滤器的孔内。 过滤器可以优选地位于容纳含水进料的容器的底部。 这可以帮助允许藻类保留在过滤器上方的蛋糕中,而不是使藻类溶解回到水性饲料中。
    • 9. 发明申请
    • UPGRADING DEASPHALTING RESIDUE TO HIGH PERFORMANCE ASPHALT
    • 升级去除残留物到高性能沥青
    • US20130143778A1
    • 2013-06-06
    • US13309940
    • 2011-12-02
    • Ramesh VaradarajLyle E. MoranJohn BrownieMary J. Gale
    • Ramesh VaradarajLyle E. MoranJohn BrownieMary J. Gale
    • C10M169/04C10C3/00C10L3/10
    • C08K5/42C08L91/00C08L95/00C10G21/003
    • A novel composition is provided that incorporates the residual solids from solvent deasphalting to make a high value asphalt product. A process for making the asphalt composition is also provided. A first portion of heavy oil or another feedstock can be deasphalted using propane deasphalting or another suitable deasphalting process. This generates a solvated fraction and an insoluble deasphalting residue. The deasphalting residue is then added to a second portion of heavy oil, such as a second portion of the same type of heavy oil that was used as feedstock in the solvent deasphalting. The mixture of deasphalting residue and heavy oil results in a novel dispersion that is suitable for use as an asphalt. Optionally, an additive such as an alkyl substituted aromatic sulfonic acid can be added to the composition to further improve the asphalt properties.
    • 提供了一种新的组合物,其包含来自溶剂脱沥青的残留固体以制备高价值沥青产品。 还提供了制备沥青组合物的方法。 重油或其他原料的第一部分可以使用丙烷脱沥青或其它合适的脱沥青方法脱沥青。 这产生溶剂化馏分和不溶性脱沥青残渣。 然后将脱沥青残渣加入重油的第二部分,例如在溶剂脱沥青中用作原料的相同类型重油的第二部分。 脱沥青残渣和重油的混合物产生适合用作沥青的新型分散体。 任选地,可将添加剂如烷基取代的芳族磺酸加入到组合物中以进一步改善沥青性能。
    • 10. 发明申请
    • Composition and Methods for Protecting Metal Surfaces from Corrosion
    • 保护金属表面免受腐蚀的成分和方法
    • US20130112418A1
    • 2013-05-09
    • US13701799
    • 2011-05-09
    • Ramesh VaradarajSabine C. ZeilingerCatalin Dragos Ivan
    • Ramesh VaradarajSabine C. ZeilingerCatalin Dragos Ivan
    • C09K8/54E21B41/02
    • C09K8/54E21B41/02
    • Guard bed compositions for protecting metal surfaces in a wellbore from corrosion may comprise a variety of constituent components. Exemplary guard bed compositions may include: one or more surfactants selected from the group comprising amine surfactants; one or more co-surfactants selected from the group comprising C3 to C15 alcohols; and one or more non-surfactant amines. Other exemplary guard bed compositions may comprise: a hydrocarbon fluid and an overbased detergent. Still other exemplary guard bed compositions may comprise: a hydrocarbon fluid; one or more surfactants; one or more co-surfactants; and one or more non-surfactant amines. The one or more surfactants may be selected from the group comprising alkyl alkoxylated surfactants. Still further, exemplary guard bed compositions may comprise: a hydrocarbon fluid and one or more associating surface active polymers selected from the group comprising amphiphilic polymers.
    • 用于保护井眼中的金属表面免受腐蚀的保护床组合物可以包含各种组成成分。 示例性的保护床组合物可以包括:一种或多种选自包括胺表面活性剂的表面活性剂; 选自包含C 3至C 15醇的一种或多种辅助表面活性剂; 和一种或多种非表面活性剂胺。 其它示例性的保护床组合物可以包括:烃流体和高碱性洗涤剂。 其它示例性的保护床组合物可以包括:烃流体; 一种或多种表面活性剂; 一种或多种辅助表面活性剂; 和一种或多种非表面活性剂胺。 一种或多种表面活性剂可以选自烷基烷氧基化表面活性剂。 另外,示例性保护床组合物可以包括:烃流体和一种或多种选自包括两亲性聚合物的缔合表面活性聚合物。