煤直接液化残渣的性质及利用现状

Properties and utilization of coal direct liquefaction residue

为了高效地利用煤直接液化残渣,从液化残渣的组成、结构特性、热解特性、溶解特性4个方面论述了液化残渣的物理化学性质的研究现状。研究发现:残渣在组成和结构特性上都保留了原煤的部分特性。在对直接液化残渣热解特性的研究中,论述了各种不同研究手段,例如热重分析仪、实验室移动床、小型焦炉、高压釜等对液化残渣的热解过程的研究进展及热解机理的解析现状。在对液化残渣的溶解性进行研究时,讨论了残渣溶解性研究的意义及其在各种溶剂中表现出的不同特征。最后论述了煤直接液化残渣的利用研究现状、分析了其潜在的高附加值利用方式、发展前景和存在的问题。

In order to improve the utilization of coal direct liquefaction residue, introduce its current research status from four aspects, which are composition of residue, structural, pyrolysis and dissolution characteristics. The results show that the residue reserves partical raw coal properties in composition and structure. According to analysis of in- vestigation methods such as thermogravimetric analysis （TGA） , laboratory moving-bed, small-sized coke oven or au- toclave, study the pyrolysis characteristics of residue. When it comes to dissolubility, the residue displays different characteristics in different solutions. At last, discuss the utilization status of coal direct liquefaction residue and existing problems.