煤中汞,砷,硒赋存形态的研究  

THE STUDY ON THE MODE OF OCCURRENCE OF MERCURY, ARSENIC AND SELENIUM IN COAL

作　　者：郭欣[1] 郑楚光[1] 刘迎晖[1] 刘晶[1] 陆晓华[1] 

机构地区：[1]华中理工大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《工程热物理学报》2001年第6期763-766,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.59876013);国家重点基础研究专项基金资助项目(No.G199902212);华中科技

摘　　要：本文利用连续化学浸提法对三种典型煤进行连续浸提，根据不同形态的溶解度，将煤中的汞，砷，硒分为可交换态，硫化物形态，有机物结合态及残渣态四种形态。结果表明不同的煤有不同的形态分布特征。但总体来看，汞主要以硫化物形态和残渣态存在。砷主要以硫化物形态存在。硒赋存在硫化物，有机物及残渣态中。The mode of occurrence of trace mercury, arsenic and selenium in three typical coals were investigated using sequential chemical extraction procedure. The research shows that sequential chem- ical extract method is efficient in determining the occurrence of trace elements in coal quantitatively. It was also found that mercury in coal mainly occurs in bound-sulfide and residue, Arsenic mainly occurs in bound-sulfide. There are a variety of occurrence modes of trace selenium in different coals.

关 键 词：煤种 汞 砷 硒 连续化学提取 赋存形态 浸提法 原煤 燃烧过程 

分 类 号：TQ530[化学工程—煤化学工程] TQ533.1