中国煤中硫的分布特征及成因

DISTRIBUTION AND FORMING CAUSE OF SULPHUR IN CHINESE COALS

通过对全国26个省、市、自治区采集的290个煤样中全硫含量进行分析测试,从不同地质时期、不同变质程度、不同地区以及四大聚煤区等方面,系统分析和考查了中国煤中硫的分布状况.结果表明,我国煤主要以中、低硫煤为主,煤中硫分储量加权平均值为0.94%.高硫煤及特高硫煤来自石炭和二叠纪,其他各时期煤均属于中、低硫煤.随着煤炭变质程度的增高,硫分有增高趋势,主要是由不同的成煤时期沉积环境影响造成.各大聚煤区煤中硫分含量差别很大,自北向南有逐渐增高趋势.

In this paper,we determined the total sulphur contents ot two hundred and ninety coal samples which were taken from twenty six provinces, municipalities and autonomous regions in China. Then we analysed the distribution of total sulphur in coals with different geological ages, different coal ranks, different regions, different coal-cumulating areas. The results show that the coals with moderate to low sulphur contents are primary in our country. The mean of total sulphur content with weight by reserves is 0.94%. The coals with high and very high sulphur content are mostly from Carboniferous and Permian, and in the other geological ages coals are almost moderate and low sulphur content coal. The contents of sulphur are increasing by coal ranks, which is caused by sedimentary environment of different coal-cumulating ages. The contents of sulphur in four coal-cumulating areas coal have much difference, which is increasing gradually from north to south.