煤炭微波脱硫前后硫形态的变化规律  

CHANGES OF SULFUR FORMS IN COAL BEFORE AND AFTER MICROWAVE DESULFURIZATION

作　　者：谢茂华[1] 陶秀祥[1,2] 许宁[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州硕士生221116 [2]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《煤炭转化》2015年第2期79-82,共4页Coal Conversion

基　　金：国家重点基础研究发展计划(973)项目(2012CB214903);国家自然科学基金资助项目(51274199);高等学校博士学科点专项科研基金资助项目(20130095110008)

摘　　要：结合XPS和FTIR分析微波联合不同浸提剂脱硫前后,煤中硫的赋存形态和变化规律.结果表明,新峪精煤中硫主要以噻吩、R—O—S—S—R′和无机硫的形式存在;微波联合HAc+H2O2的脱硫率明显高于微波联合NaOH的脱硫率.经微波联合HAc+H2O2处理后,煤中噻吩和R—O—S—S—R′显著降低,并新生成了二苯氧硫和硫酸铁.经微波联合NaOH处理后,噻吩和R—O—S—S—R′含量有所降低,而硫酸铁和无机硫含量有所升高.同时对脱硫机理进行了探讨.In this paper, the changes of sulfur chemical forms in coal before and after microwave desulfurization combined with different leaching agent were analysed by XPS and FTIR. The results show that the sulphur exists in Xinyu clean coal in the forms of thiophene, R-O- S-S-R＇ and inorganic sulfur; the desulfurization rate of microwave combined with HAc＋ H2O2 was significantly higher than that of NaOH. After microwave desulfurization combined with HAc ＋H2O2, the content of thiophene and R-O-S-S-R＇ reduced significantly, and diphenyl oxide sulfur and ferric sulfate were generated. After microwave desulfurization combined with NaOH, the content of thiophene and R-O-S-S-R＇ reduced, while ferric sulfate and inorganic sulfur were increased. Meanwhile, the mechanism was discussed.

关 键 词：微波脱硫 硫形态 XPS FTIR 

分 类 号：X701.3[环境科学与工程—环境工程]