Research on Non-Liquefaction Moderate Hydrogenation Modification Experiments with Lignite and Plastics Blended

In order to research the added plastic affected to the lignite hydrogenation under the condition of the non-liquefaction hydrogenation reaction, the hydrog enation experiments with lignite hydrogenation and lignite co-mixed polypropylene under the 8 MPa hydrogen pressure and different reaction temperature .The functiona I groups, thermolysis reactivity and caking index of the hydrogenation coal were analyzed and measured.The results showed that the hydrogenation reaction could caus e the lignite structure with obvious changes, the aliphatic hydrocarbon content in the coal structure was remarkably increased and the themolysis reactivity was obvious ly increased.After the 300 °C and 350 °C hydrogenation reaction, the caking index of the coal were improved from 0 to 9.47 and 14. 44 individually.Under the hydrogenati on reaction condition, after the hydrogenation reaction with the lignite and polypropylene co-mixed, the themolysis reactivity and caking index of the coal was better tha n 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 degree s.Under the condition of the non-liquefaction moderate hydrogenation reaction, the polypropylene added would bring unfavorable influence to the lignite to improve the caking index by hydrogenation reaction.