燃料化学学报2017，Vol.45Issue(4)：418-426,9.
载Na胜利褐煤热解过程中氮的迁移转化
Transformation of nitrogen during pyrolysis of Na-loaded Shengli brown coal
摘要
Abstract
The impact of Na content on nitrogen transformation during the pyrolysis of Shengli raw coal and the Na-loaded coal in a fixed-bed/fluidized-bed quartz reactor was investigated. The quantification of NH3 and HCN in gas product was carried out using an ultraviolet-visible spectrophotometer while the occurrence modes of nitrogen in the solid chars were detected by X-ray photoelectron spectroscopy( XPS) . The results indicate that the transformation of coal-N to NH3 can be catalytically enhanced by certain amount of Na at low temperature. When the final pyrolysis temperature is relatively high, the presence of Na appears to inhibit the formation of NH3 . Meanwhile, for any given pyrolysis temperature, the production of HCN will be suppressed by Na. When the pyrolysis temperature is high, the increase of Na content in coal causes the reduction of nitrogen remaining in char and promotes quaternary nitrogen formation, whereas, the effect is negligible at low temperature.关键词
褐煤/热解/Na/氮Key words
brown coal/pyrolysis/Na/nitrogen分类
化学化工引用本文复制引用
郑盼盼,王永刚,武欣,刘宸,白艳萍,林雄超..载Na胜利褐煤热解过程中氮的迁移转化[J].燃料化学学报,2017,45(4):418-426,9.基金项目
The project was supported by the National Natural Science Foundation of China ( 21406261 ) and the Plan of National Science and Technology Support (2012BAA04B02) .国家自然科学基金(21406261)和国家科技支撑计划(2012BAA04B02)项目资助 （ 21406261 ）
