中国煤中硫的地球化学研究

燃烧过程中，煤中硫会以硫氧化物等形式释放出来，污染大气以至形成酸雨，对环境造成极大的影响。本文在对中国煤中硫全面分析的基础上．总结并分析了中国煤中硫在不同地区、不同煤层和不同形成环境中的含量与分布规律，阐述煤中硫形成的地质成因和影响因素．以及育机硫、无机硫和元素硫的赋存状态．概述了煤利用过程中硫的转化机理及其对环境的影响．提出了对煤中硫的研究趋势和今后研究方向与热点问题。

The Study of Sulfur Geochemistry in Chinese Coals

China is the largest eoal producer and consumer in the world and coal is the most important energy source in China. Coals were formed in various geological times and sedimentary environments in China. Sulfur dioxide, produced by the combustion of the sulfur-bearing coals, will be released into the atmosphere to cause acid ram and to deeply impact the environment. This paper has systematically reviewed the data in literature on the contents and distributions of sulfur in eoal seams from various coalfields deposited in various kinds of depositional environments. The forms of sulfur occurred in Chinese coals include pyritic, organic, sulfate, and elemental sulfur. The abundance of sulfur in coals is related to the depositional environments of coal seams. In general, sulfur contents of the coal seams influenced by marine water during the deposition and formation are higher than those of the coal deposited in non - marine environments. The geological genesis and impact factors on the formation of sulfur in coals were elaborated. The mechanism of sulfur transformation during the coal combustion and its impact on the environment are summarized and discussed. It is proposed that the detailed geochemical study on sulfur in coals from various coalfields should be carried out urgently in order to understand and to reduce the impact of sulfur dioxide produced by the eoal combustion onto the environment and the human health.