灰色预测模型在煤焦气化过程中的应用及动力学分析  

Application of Grey Model in Research of Gasification of Char and the Kinetic Analysis

作　　者：高松[1] 陈鸿伟[1] 王鸿雁[2] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力科学与工程》2011年第10期57-60,共4页Electric Power Science and Engineering

摘　　要：运用等温热重技术,以二氧化碳为气化剂,考察不同气化温度(700℃,750℃,800℃,850℃,900℃,940℃)下,煤焦气化率随时间的变化。运用灰色理论及方法,建立煤焦气化率预测模型GM(1,1),预测结果与实验数据对比表明:该模型能够对不同气化温度下煤焦的气化率,进行较好的预测。此外,煤焦气化率为50%时,研究其800℃～850℃,850℃～900℃和900℃～940℃的动力学参数。结果表明,频率因子并不是常数,而是随活化能的增大而增大,表现出"补偿效应";lnA0(A0是频率因子)和Ea(活化能)之间有较好的线性关系。The isothermal thermo-gravimetric analysis was used to study the gasification reaction characteristics of char in CO2 atmosphere under different temperatures（700 ℃,750 ℃,800 ℃,850 ℃,900 ℃,940 ℃）.A grey forecasting model GM（1,1） was developed to predict the gasification rate of char,and the predicted results were good in agreement with experimental data.What＇s more,when the char gasification rate was 50%,this article analyzed the char gasification kinetics under different temperature span,which ranged from 800 ℃ to 940 ℃.The data showed： kinetic compensation relationship existed between the activation energy and frequency factor and the relation of lnA0（A0 is frequency factor） and E（the activation energy） is linearity.

关 键 词：煤焦气化 灰色模型 动力学分析 补偿效应 

分 类 号：TQ531.9[化学工程—煤化学工程]