摘要
采用氮吸附法测定了六种不同煤阶的劣质煤及其在燃烧前（热重分析着火温度点前）和燃烧后（热重分析燃烬温度点后）的比表面、体积和孔径大小。发现煤样在燃前比表面、体积数据皆增大，微孔和大孔数目皆增多。燃烧过程中同时存在互相竞争的“开孔”和“闭孔”作用，导致燃后煤样的微孔和大孔数目有增有减。并应用模糊孔模型，结合热重测试结果，分析了不同煤样的着火和燃烬特性。
The surface areas,volumes and apertures of six coals,coal sam-ples before ignition and chars after burnout were measured.“Fuzzy Pore Mode”was adopted to explain the data and the results were reasonably related with that of thermogravimetric analysis,The combustion characteristics of coals were also stud-ied.
出处
《煤炭转化》
CAS
CSCD
北大核心
1995年第2期56-63,共8页
Coal Conversion
关键词
比表面分析法
劣质煤
燃烧
煤
surface analysis,inferior coal,combustion characteristics
