摘要
采用三种升温速率，ＴＰＲ方法研究了不同碳化条件下得到的八个煤焦样品的ＣＯ２气化动力学规律。用Ｆｒｅｅｍａｎ－Ｃａｒｒｏｌ、Ｏｚａｗａ和Ｋｉｓｓｉｎｇｅｒ方法计算分别得到了动力学参数。结果表明：尽管由不同方法求得的活化能有较大差异，但都能较好地验证碳化条件对煤焦气化反应性的影响。研究还发现，对所有煤焦样品。用Ｆｒｅｅｍａｎ－Ｃａｒｒｏｌ方法计算得到的活化能Ｅ和指前因子Ａ之间，都存在着动力学补偿效应。
CO 2 gasification kinetics of eight char samples were investigated at heating rates of 10, 20 and 40℃/min. We calculated the kinetic parameters using Freeman Carroll,Ozawa and Kissinger methods respectively.The results showed that,although there were differences among the kinetic parameters obtained by different methods,these parameters could reasonably interpret the effect of carbonization conditions on char gasification reactivity.The values of E and A for these reactions exhibited a compensation effect.
出处
《煤化工》
CAS
1996年第4期42-46,共5页
Coal Chemical Industry
基金
国家自然科学基金
关键词
煤焦气化
补偿效应
程序升温反应
动力学
煤气化
heating rate,char gasification,Freeman Carroll method, compensation effect
