摘要
利用热重分析仪(TGA)和等温吸湿实验装置对一种印尼褐煤干燥和水分再吸收过程进行了试验研究。结果表明干燥过程的平均表观活化能为25.77kJ/mol,脱去吸附水的表观活化能为33.14kJ/mol。吸湿等温线的形状为S型等温线,ChungPfost数学模型更适合于拟合印尼褐煤的等温吸湿过程。
The drying kinetics of low rank coal and moisture adsorption of the dried coal using a thermobalance and a climatic chamber are investigated.Results show that the average apparent activation energy (E) of drying is 25.77 kJ/mol,the apparent activation energy of removing adsorbed water is 33.14 kJ/mol.The shape of sorption isotherm is S-style.Chung Pfost mathematical model is more suitable for the isothermal moisture adsorption process.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第S1期5-7,共3页
Modern Chemical Industry
关键词
褐煤
干燥动力学
等温吸湿
lignite
drying kinetic
isothermal moisture adsorption
