中国煤中氮含量的分布研究

系统地研究了中国煤中氮含量的分布。结果表明不同地区、不同时代、不同煤类煤中的氮含量均有显著的差异,早、中侏罗世煤的氮含量最低,第三纪煤的氮含量最高。随着变质程度的增加,煤中氮含量降低,肥煤阶段以后,煤中氮含量随变质程度增高而明显降低。 The ditribution of nitrogen content in Chineae coal was studied systematically in this paper.The result indicated that there were obvious difference among different areas,periods of coal formation and coal ranks.Nitrogen content in early-middle Jurassic Period was the lowest,and Nitrogen content in the Tertiary Period was the highest.With the increase of coal rank,Nitrogen content in coal decreased;after fat coal rank,Nitrogen content in coal decreased obviously