摘要
分别采用热重法和差示扫描量热法对成型后褐煤的热解特性进行了分析,并采用Freeman-Carroll法计算出了型煤热解动力学参数。结果表明,300℃型煤开始发生激烈的热解反应,到431.8℃时,热解最为激烈。型煤热解反应为1级反应;反应温度为450℃左右时,活化能为241.94 kJ/mol;成型后褐煤的化学性质较成型前稳定。
Pyrolysis characteristics of briquetted lignite were analyzed by thermogravimetry and differential scanning calorimetry,the parameters of reaction dynamics were obtained based on Freeman-Carroll method.The violent pyrolysis of briquetted lignite started at 300 ℃,and reached the most at 431.8 ℃.The pyrolysis reaction of briquetted lignite was first order reaction;Activation energy was 241.94 kJ/mol when reaction temperature at the vicinity of 450 ℃;Chemical properties became more stable after briquetted.
出处
《化工生产与技术》
CAS
2012年第1期12-14,67-68,共3页
Chemical Production and Technology
基金
国家重点基础研究发展计划(2012CB214900)
关键词
褐煤
型煤
热重法
差示扫描量热法
lignite
briquetted coal
thermogravimetry
differential scanning calorimetry
