影响煤焦比表面和孔隙特性因素的灰色关联分析

Grey Correlation Analysis of the Factors having an Effect on Coal Char Specific Surface Area and Pore Properties

煤焦比表面积和孔隙特性直接决定着煤焦的反应性和煤焦的燃尽时间。影响煤焦比表面积和孔隙特性的因素很多．其关系也相当复杂．本文对实验测得的不同煤种煤焦的比表面积和平均孔径与各影响因素之间的关系进行了灰色关联分析，结果发现．水分、挥发分和矿物质对煤焦的比表面积影响较大，而镜质组含量、固定碳和灰分对煤焦的孔隙特性有较大影响．

The coal char reactivity and burn-out time are directly determined by the specific surface area and pore properties of the coal char. A multitude of factors exercise an influence on the specific surface area and pore properties. and the interrelationship between these factors has been found to be rather complicated. In this Paper a grey correlation analysis method is applied to ascertain the relationship beween these influencing factors and the measured coal char specific surface area and pore properties of various kinds of coals. It is found that moisture, volatile matter and minerals have a greater effect on coal char specific surface area while vitrinite. fixed carbon and ash a greater effect on coal char pore properties.