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为了解我国煤中氮的含量水平及其分布特征,在全国主要产煤的26个省、市、区,根据各煤田的地质储量、成煤时期和煤变质程度,兼顾各矿区的煤炭产量,采集306个煤样,测定了全部样品的氮含量,并对各成煤时代、各聚煤区、各省市区的煤氮含量进行了统计分析。研究表明:煤中氮主要以有机形态赋存;氮含量与煤变质程度间有微弱的正相关关系;全国煤的氮含量近似服从正态分布,90%的样品含氮范围为0.52%～1.41%,宜用算术平均值0.98%作为全国平均煤氮含量。
In order to understand the level and distribution characteristics of nitrogen in coal in our country, in 26 provinces, cities and districts that produce coal in China, according to geological reserves, coal-forming period and degree of coal metamorphism in each coal field, A total of 306 coal samples were collected and the nitrogen contents of all the samples were measured. The coal-nitrogen contents in each coal-forming age, coal-gathering area and provinces were analyzed. The results show that: the nitrogen in coal is mainly in organic form; there is a weak positive correlation between nitrogen content and coal metamorphism; the nitrogen content in coal in China is approximately normal, and the nitrogen content in 90% of the samples is 0.52% -1.41 %, Should use the arithmetic average of 0.98% as the national average coal nitrogen content.