摘要
应用热重分析法研究了市场上常售的三种活性炭从30℃～900℃的氧化热解过程.实验结果表明:样品的炭氧氧化过程中有一快速热解阶段,在此阶段样品的氧化动力学参数可以由一级反应方程和Coats-Redfern模型描述,据此求出活化能.活性炭自燃实验表明,活化能低的活性炭容易自燃,活化能高的活性炭不容易自燃.所以可以利用活化能指标来比较活性炭的自燃倾向性.
Thermogravity analysis technique was used to study the course of thermal oxi- dizing decomposition from 30 ℃ to 900 ℃ for the activated carbon. The result suggested that the fast pyroysis process including the oxidizing decomposition of activated carbon can be described as a first-order chemistry reaction and Coats-Redfern method, thus activation energy can be got. The spontaneous combustion experiment of proved the activated carbon which has lower activa- tion energy would be easy to spontaneous combustion. So spontaneous combustion tendency of activated carbon is divided by using activation energy index.
出处
《煤炭转化》
CAS
CSCD
北大核心
2013年第3期84-87,共4页
Coal Conversion
基金
国家"十一五"科技支撑项目(2009BADB1B03)
林业公益性行业专项项目(201004051)
关键词
活性炭
自燃倾向性
热重分析
活化能
activated carbon, spontaneous combustion tendency, thermogravity analysis,activation energy
