郑州煤中汞的含量分布及赋存状态研究  

Research on distribution characteristics and occurrence state of mercury in Zhengzhou coal

作　　者：石勇丽 张凯 SHI Yongli;ZHANG Kai(Henan Provincial Coal Geological Survey and Research Institute,Zhengzhou 450000,China;School of Materials and Chemistry,China University of Geosciences,Wuhan 430000,China)

机构地区：[1]河南省煤炭地质勘察研究总院,河南郑州450000 [2]中国地质大学材料与化学学院,湖北武汉430000

出　　处：《煤质技术》2020年第6期29-33,共5页Coal Quality Technology

基　　金：河南省国土资源厅地质科研资助项目([2017]237)。

摘　　要：燃煤汞排放是造成全国产煤重点城市郑州的大气汞污染之重要来源,研究郑州地区煤中汞的含量及赋存状态对探究煤中脱汞技术与减少燃煤中汞的排放具有重要的意义。采集郑州周边地区106个煤样进行汞含量测试以研究其分布特征,并从中选取20个煤样,分别以高硫煤、中低硫煤为研究对象探究其煤中汞含量与灰分、硫含量的关系。研究发现:106个煤样中低汞煤样数量为87个,占总数的82%。郑州周边地区汞含量范围在0.07μg/g^0.485μg/g,算术平均值为0.185μg/g,与河南省煤中汞含量的平均值相近,小于全国煤中汞含量平均值0.20μg/g,高于世界煤中汞含量平均值0.10μg/g;高硫煤样品中汞与硫化物相关性R2=0.71186,相关性显著;而在中低硫煤中,煤中汞的含量与硫含量和灰分的相关性不明显。The mercury emitted from burning coal is an important source of atmospheric mercury pollution in Zhengzhou,a key city for coal production in China.Studying the content and occurrence state of mercury in coal in Zhengzhou is of great significance for exploring the technology of mercury removal in coal and reducing the emission of mercury in coal.106 coal samples in surrounding area of Zhengzhou were collected for mercury content test to study the distribution characteristics,and 20 coal samples were selected from them,taking high-sulfur coal and low-sulfur coal respectively as the research objects,the relationships between mercury content and ash,sulfur content were explored.The study found that there are 87 low-mercury coal samples among 106 coal samples,accounting for 82%of the total.The mercury content in surrounding areas of Zhengzhou ranges from 0.07μg/g to 0.485μg/g,the arithmetic average value is 0.185μg/g,which is similar to the average mercury content in coal in Henan province,less than the national average mercury content of coal(0.20μg/g),higher than the world average mercury content(0.1μg/g).The correlation between mercury and sulfide in high-sulfur coal samples is R2=0.71186,the correlation is significant;while in low-sulfur coal,the correlations between mercury content and sulfur content,ash content are not obvious.

关 键 词：煤中汞 含量分布 赋存状态 硫 灰分 相关性分析 

分 类 号：TQ533.1[化学工程—煤化学工程] P595[天文地球—地球化学]