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    • 4. 发明授权
    • Hydrogen donor solvent coal liquefaction process
    • 氢供体溶剂煤液化过程
    • US4022680A
    • 1977-05-10
    • US641489
    • 1975-12-17
    • Peter S. Maa
    • Peter S. Maa
    • C10G1/04C10G1/06
    • C10G1/042C10G1/065
    • A process for liquefying a particulate coal feed to produce useful petroleum-like liquid products, particularly by steps which include: (a) contacting, in a liquefaction zone, said coal feed with a hydrogen donor solvent at temperature and pressure sufficient to hydroconvert and liquefy the coal (b) separating the product from the liquefaction zone by distillation into fractions inclusive of a liquid fraction which contains at least 30 weight percent, and preferably at least 50 weight percent hydrogen donor compounds, particularly those fractions boiling within about the 350.degree.-850.degree. F. range, and preferably within about the 400.degree.-700.degree. F. range, (c) hydrogenating said liquid fraction in a hydrogenation zone, (d) adding to said liquid fraction a solvent characterized as a low molecular weight heterocyclic oxygen or heterocyclic sulfur compound containing, within a molecule, from 2 to about 6 fused rings one or more of which is a five- or six-membered heterocyclic ring having 4 to 5 carbon atoms and from 1 to 2 atoms of oxygen or sulfur, and (e) recycling the hydrogenated liquid solvent mixture to said coal liquefaction zone.
    • 用于液化颗粒状煤进料以产生有用的石油样液体产物的方法,特别是通过以下步骤进行的方法,该方法包括:(a)在液化区使所述煤进料与氢供体溶剂在足以加氢转化和液化的温度和压力下接触 煤(b)通过蒸馏将产物与液化区分离成包括含有至少30重量%,优选至少50重量%氢供体化合物的液体馏分,特别是在约350℃沸腾的馏分, 850°F范围内,优选在约400°-700°F范围内,(c)在氢化区中氢化所述液体馏分,(d)向所述液体馏分中加入表征为低分子量杂环氧的溶剂 或在分子内含有2至约6个稠合环的杂环硫化合物,其中一个或多个是具有4个或5个的五元或六元杂环 至5个碳原子和1至2个原子的氧或硫,和(e)将氢化液体溶剂混合物再循环到所述煤液化区。
    • 6. 发明授权
    • Liquefaction process
    • 液化过程
    • US4485008A
    • 1984-11-27
    • US483076
    • 1983-04-07
    • Peter S. MaaLavanga R. VeluswamyLonnie W. Vernon
    • Peter S. MaaLavanga R. VeluswamyLonnie W. Vernon
    • C10G1/00C10G1/08C10G1/06
    • C10G1/006C10G1/083
    • An improved liquefaction process for solid carbonaceous materials wherein at least a portion of the liquefaction is accomplished in the presence of an added hydrogenation catalyst and a solvent containing at least 1.25 wt % donatable hydrogen and in the presence of partially liquefied, solid carbonaceous material at liquefaction conditions. In a preferred embodiment, the liquefaction is accomplished in a plurality of stages and a solvent containing at least 1.25 wt % donatable hydrogen is used in at least one stage, most preferably in the second stage. The partially liquefied solid carbonaceous material may be taken from the bottoms fraction of the effluent from any of the liquefaction stages.
    • 用于固体碳质材料的改进的液化方法,其中至少一部分液化在添加的氢化催化剂和含有至少1.25重量%可供氢的溶剂的存在下进行,并且在液化的部分液化的固体含碳材料存在下完成 条件。 在优选的实施方案中,液化在多个阶段中完成,并且在至少一个阶段,最优选在第二阶段中使用含有至少1.25wt%可供氢的溶剂。 部分液化的固体碳质材料可以从任何液化阶段的流出物的底部馏分中获取。