COREX系统用煤燃烧过程中含氧官能团的转变研究

COREX是现有熔融还原方法中的主要工艺流程，该系统对煤质量有严格的要求。我们对系统运行中所涉及的主要煤种大同煤和兴隆庄煤燃烧行为进行深入研究。利用同步热分析仪（TG．DSC）研究高温条件下煤的热分解行为；通过电子扫描显微镜（SEM）观察了煤的微观结构，进行了岩相分析；通过傅里叶红外光谱仪（Frm）和湿式化学分析法，定性及定量的研究了煤中含氧官能团，尤其是热解过程中有机含氧官能基团的组分、数量、化学结构和转化机理。全面评价煤炭的质量，为系统稳定运行选用煤种，提高块煤利用率提供了理论基础。

Evolution of organic oxygen functional groups during combustion of COREX coal

Datong coal and Xinglongzhuang coal are using in COREX melting reduction process. Combus- tion behaviors of Datong coal and Xinglongzhuang coal were studied by synchronous thermal analyzer （TG-DSC）. The microcosmic structure and macerals were observed by SEM. The qualitative and quantita- tive determinations of oxygen functional groups were researched by FTIR and chemical analysis methods. The evolution of the chemical structure and transformation mechanism of organic oxygen functional groups during combustion of COREX coal will be figured out, which can expand the range of coal selection and decrease the coal consumption.