煤焦的晶格结构、本征反应活性和密度初探

CRYSTALLINITY, TRUE DENSITY AND INTRINSIC REACTIVITY OF INTERMEDIATE TEMPERATURE COAL CHAR

通过对低变质程度烟煤的镜质组分分别在空气和高纯氮中所得中温焦炭的密度和晶格化程度的初步研究；并作了链条锅炉飞灰残炭的本征反应活性和密度关系比较。认为煤在不同气氛中加热其晶格化结构增强的决定性作用是温度，其次是煤在加热中的停留时间。煤焦的密度大小可作为煤焦晶格化程度的一种表征，煤焦的本征反应活性与煤焦密度和晶格化程度具有相关性。

The true density and crystallinity of char samples of a kind of bituminous vitrinite were measured and studied These char samples were obtained at various temperature and residence time The true density and crystallinity of the residual carbon in the fly ash from a stoker boiler were also investigated The results showed that the crystallinity of coal char samples generated at intermediate temperature increases with an increase in temperature and residence time It also showed that there is a certain relationship between crystallinity, true density and the intrinsic reactivity of coal chars