摘要
对中国煤中汞含量的分布与赋存特征进行分析研究,通过对全国范围内不同矿区1 100余个煤样中汞含量的数据统计分析可知:我国大多数煤中汞含量分布范围为(0~6.2)μg/g,加权平均含量为0.154μg/g;煤中汞在各大聚煤区的分布不均衡,华南、华北地区煤中汞含量总体水平较高,而东北、西北地区煤中汞含量普遍较低。浮沉实验结果表明汞主要赋存于粘土矿物及硫铁矿中。基于煤中汞分布水平、相关标准中汞排放的规定及燃煤汞排放控制技术现状,我国动力煤汞含量应用上限值控制在0.600μg/g较为符合实际。
The distribution and occurrence characteristics of mercury in China steam coal were analyzed in this article.Statistical analysis results from different mining areas（more than 1 100 coal samples）showed that,the mercury content in China coal are mostly ranged from zero to 6.2μg/g.The weighted average content is 0.154μg/g.The content varies in different coalaccumulated areas in China：high in South China and North China,relatively low in Northeast China and Northwest China.The float and sink analysis result showed that mercury mainly distributed in clay minerals and pyrite.Considering the mercury content level,emission regulation in related standards and the present situation of mercury emission control technology in coal combustion,the prohibitive value of mercury in China steam coal should be 0.600μg/g.
作者
丁华
DING Hua(Beijing Research Institute of Coal Chemistry, China Coal Research Institute Corporation Ltd. , Beijing 100013, China;State Key Laboratory of Coal Mining and Clean Utilization, Beijing 100013, China)
出处
《煤质技术》
2018年第1期1-6,共6页
Coal Quality Technology
基金
国家重点研发计划项目(2016YFB0600301)
关键词
动力煤
汞
含量特征
应用限值
分布范围
加权平均
赋存特征
steam coal
mercury
content distribution
prohibitive value
distribution range
weighted average
occurrence characteristics
