Combustion characteristics of Inner Mongolia lignite semi-cokeChinese Full Text
ZHANG Qingwei;SHEN Baohong;QU Sijian;XIE Qiang;School of Chemical and Environmental Engineering,China University of Mining and Technology (Beijing);Beijing Research Institute of Coal Chemistry,Coal Science and Technology Research Institute Co.,Ltd.;State Key Laboratory of Coal Mining and Clean Utilization (China Coal Research Institute);
Abstract: In order to use Wulagai lignite（Inner Mongolia） efficiently,taking-6 mm Wulagai lignite as raw material,the test prepared the Wulagai lignite semi-coke in muffle which was used to simulate the industrial carbonization furnace.Then the proximate analysis,calorific value,grindability index,combustion dynamics of semi-coke,relationship between pyrolysis condition and semi-coke combustion characteristics were researched.The results showed that,the final temperature of pyrolysis was the main influencing factor,the influence of heating rate and holding time ware not significant.The reaction activity of semi-coke improved with the rise of final temperature and heat preservation time,while the influence on combustion characteristics index was opposite.The semi-coke which was obtained at 600 ℃ pyrolysis had superior calorific value of 24.50 MJ / kg which was 77% higher than that of raw coal.The combustion characteristics index were1.4 × 10-7%2/（min2·℃3）,the suitable fuel ratio R ranged from 7 to 9,which was a fine fuel.
- DOI：
10.13226/j.issn.1006-6772.2014.06.011
- Series：
- Subject：
- Classification Code：
TD849.2;TQ530.2
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