In order to research the added plastic affected to the lignite hydrogenation under the condition of the non-liquefaction hydro- genation reaction, the hydrogenation experiments with lignite hydrogenation and lignite co-mixed polypropylene under the 8 MPa hydrogen pressure and different reaction temperature. The functional groups, thermolysis reactivity and caking index of the hydrogenation coal were analyzed and measured. The results showed that the hydrogenation reaction could cause the lignite structure with obvious changes, the ali- phatic hydrocarbon content in the coal structure was remarkably increased and the themolysis reactivity was obviously increased. After the 300℃ and 350℃ hydrogenation reaction, the caking index of the coal were improved from 0 to 9.47 and 14. 44 individually. Under the hydrogenation reaction condition, after the hydrogenation reaction with the lignite and polypropylene co-mixed, the themolysis reactivity and caking index of the coal was better than the raw coal, but in comparison with the hydrogenation coal with plastic added, the themolysis reactivity and caking index of the coal was reduced in different degrees. Under the condition of the non-liquefaction moderate hydrogena- tion reaction, the polypropylene added would bring unfavorable influence to the lignite to improve the caking index by hydrogenation reaction.%为研究在非液化加氢反应条件下添加聚丙烯（塑料）对褐煤加氢的影响，进行了8MPa氢压、不同反应温度条件下褐煤加氢及褐煤与聚丙烯共混加氢试验，分析和测定了加氢煤的官能团、热解反应性和黏结性。结果表明，加氢反应使得褐煤结构发生了明显改变，煤结构中脂肪烃含量明显增多，其热解反应性显著提高，300和350oC加氢反应后，煤的黏结指数从0分别提高到9．47和14．44；相同加氢反应条件下，褐煤与聚丙烯共混加氢反应后煤的热解反应性、黏结性虽然比原煤好，但与未添加塑料的加氢煤相比，均有不同程度的降低，在非液化中度加氢反应条件下，聚丙烯的添加对褐煤通过加氢反应改善其黏结性带来不利影响。
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