基于活化能指标活性炭自燃倾向性研究  

STUDY ON THE SPONTANEOUS COMBUSTION TENDENCY OF ACTIVATED CARBON BASED ON ACTIVATION ENERGY INDEX

作　　者：徐凡[1] 蒋剑春[1] 孙康[1] 刘雪梅[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局林产化学工程重点开放性实验室,南京硕士生210042

出　　处：《煤炭转化》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)

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.

关 键 词：活性炭 自燃倾向性 热重分析 活化能 

分 类 号：TQ424.1[化学工程] TQ038