Study on the comparison of the pyrolysis gas release of lignite and its briquette

作     者：ZHU Shi-feng CHU Mo ZHAO Fei-xiang 

作者机构：College of Chemical and Environmental EngineeringChina University of Mining and Technology(Beijing)Beijing 100083China 

出 版 物：《Journal of Coal Science & Engineering(China)》 (煤炭学报（英文版）)

年 卷 期：2012年第18卷第2期

页      面：177-181页

学科分类：081702[工学-化学工艺] 080704[工学-流体机械及工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 

主　　题：pyrolysis gas lignite briquette 

摘      要：In this experiment, lignite was refined and processed through binderless briquette preparation process from low-rank coal and became briquette. Then, lignite and its briquette were pyrolysed as materials to compare the nature of their pyrolysis. In this study, the experiment was carried out through a lab tube furnace, at a heating rate of 10 ~C/min, and the gas was analyzed and compared, which was collected at different temperatures. The results show that： in the pyrolysis temperature of 550-850 ℃, the semi-coke yield of briquette is 2%-6% higher than lignite, the tar yield of briquette is 2%-3% higher than lignite and the gas yield of briquette is 4%-9% less than lignite. The time required for complete release of the briquette is about 20 min less than lignite. The components in the pyrolysis gas of lignite and its briquette are the same, and their variation with the pyrolysis temperature is similar.