陕西铜川矿区石炭纪煤中硫的赋存状态研究

The research of sulfur occurrence statusin of carboniferous coal in Tongchuan mining area

选取陕西铜川矿区王石凹、金华山、东坡、鸭口4个煤矿的原煤进行煤质分析及测定煤中全硫、形态硫,并借助红外光谱分析和X射线光电子能谱分析(XPS)对煤中硫的分布情况进行表征。结果表明:陕西铜川矿区煤中硫含量为中高硫或高硫,其煤中硫以有机硫为主,煤中无机硫主要为黄铁矿。有机硫主要以硫醇、硫醚、二硫醚和噻吩硫的形式存在,另外还以少量的亚砜和砜的形式存在。

Raw coal samples from four coal mines including Wang Shiao,Jin Huashan,Dongpo,Yakou coal in Tongchuan were selected.Total sulfur and forms of sulfur in the samples were determined,and occurrence status of sulfur were characterized using FT-IR and XPS.The results showed that sulfur content of raw coal in Tongchuan mining area was medium or high,mainly in the form of organic sulfur.The organic sulfur mainly existed in the form of sulfur wine,sulfide,disulfide and thiophene,and small amount in the form of sulfoxide and sulfone.