高温燃烧条件下煤自身的固硫特性  

The influences of high-temperature phase on coal self-desulphurization

作　　者：杨天华[1] 李润东[1] 周俊虎[2] 魏立宏[1] 岑可法[2] 

机构地区：[1]沈阳航空工业学院清洁能源与环境工程研究所,辽宁沈阳110034 [2]浙江大学热能工程研究所,浙江杭州310027

出　　处：《煤炭学报》2006年第3期360-364,共5页Journal of China Coal Society

基　　金：辽宁省教育厅青年基金计划资助项目(2004f016)

摘　　要：利用自行设计的高温实验装置和XRD射线衍射仪及SEM扫描电镜研究了硫铝酸钙等高温固硫产物对煤自身固硫特性的影响．结果表明：在1250-1300℃的高温下，自身含有Ca／S比与Al／S比相对较高的煤固硫效果较好，微观分析发现有相当数量的硫铝酸钙等固硫物相生成．温度继续升高固硫率显著下降，反应样品在炉中停留800s左右反应基本完成，反应时间继续延长对反应无影响．The influences of high-temperature phase sulphoaluminate to coal self-desulphurization were studied by laboratory-scale batch experiments, X - ray diffraction and SEM visualization. Experimental results indicate that the desulphurization effect of coal containing high Ca/S and A1/S have the advantage at 1 250 - 1 300 ℃ , at the same time the sulphoaluminate were found by microscopic view. The desulfurization rate decreases dramatically when temperature increases. The desulpurization reaction will finish at 800 s and there are no change with the increasing of reaction time.

关 键 词：高温燃烧 自身固硫 硫铝酸钙 

分 类 号：TQ534[化学工程—煤化学工程]