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    Coal liquefaction process
    1.
    发明授权
    Coal liquefaction process 失效
    煤浆液化工艺

    公开(公告)号：US3867275A

    公开(公告)日：1975-02-18

    申请号：US34934473

    申请日：1973-04-09

    申请人： UNIVERSAL OIL PROD CO

    发明人： GLEIM WILLIAM K T ,  O'HARA MARK J

    IPC分类号： C10G1/00 ,  C10G1/04

    CPC分类号： C10G1/00 ,  C10G1/006 ,  C10G1/04

    摘要： A process for producing liquid hydrocarbonaceous products from coal utilizing two steps of solvent extraction with different solvents. In the first stage, coal is contacted, at relatively high temperature and pressure, with a heavy hydrocarbon solvent containing a mixture of hydroaromatic hydrocarbons and saturated aliphatic hydrocarbons in a hydroaromatics/aliphatics weight ratio between about 1:2 and about 2:1. The solid materials remaining after the first liquefaction step are subsequently separated from the liquefied coal and the heavy solvent and the liquefied coal from the first extraction step is recovered as a product. The solid materials recovered from the first extraction step are solvent extracted, at relatively low temperature and pressure, with a monocyclic aromatic hydrocarbon solvent, and the resulting liquids are also recovered as a product.

    摘要翻译： 一种利用两步溶剂萃取不同溶剂从煤中生产液体含烃产品的方法。 在第一阶段，煤在相对较高的温度和压力下与大约1:2至大约2:1之间的水蒸气/脂肪族重量比的含烃油和饱和脂族烃的混合物的重烃溶剂接触。 在第一液化步骤后残留的固体物质随后从液化煤和重溶剂中分离出来，第一提取步骤中的液化煤作为产物回收。 从第一提取步骤回收的固体物质在相对较低的温度和压力下用单环芳烃溶剂进行溶剂萃取，并且所得液体也作为产物回收。