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IMPROVED PROCESS FOR COAL LIQUEFACTION FROM SELECTED COAL AS RAW MATERIAL

机译:精选煤炭作为原料的液化工艺改进

摘要

An improved coal liquefaction process is provided whereby coal conversion is improved and yields of pentane soluble liquefaction products are increased. In this process, selected feed coal is pulverized and slurried with a process derived solvent, passed through a preheater and one or more dissolvers in the presence of hydrogen-rich gases at elevated temperatures and pressures, following which solids, including mineral ash and unconverted coal macerals, are separated from the condensed reactor effluent. The selected feed coals comprise washed coals having a substantial amount of mineral matter, preferably from about 25-75%, by weight, based upon run-of-mine coal, removed with at least 1.0% by weight of pyritic sulfur remaining and exhibiting vitrinite reflectance of less than about 0.70%.
机译:提供了一种改进的煤液化方法,从而改善了煤的转化率并增加了戊烷可溶液化产物的产率。在此过程中,将选定的进料煤粉磨成粉,并与来自过程的溶剂制浆,使其在高温和高压下在富含氢的气体存在下通过预热器和一个或多个溶解器,然后进行固溶,包括矿物灰和未转化的煤从冷凝的反应器流出物中分离出一些金属。所选择的进料煤包括具有大量矿物质的洗过的煤,所述矿物质基于矿用煤,按重量计优选为约25-75%,被除去的煤中剩余有按重量计1.0%的黄铁矿硫并显示出镜质体反射率小于约0.70%。

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