DAEM在模拟蒸馏体系中的推广应用研究

THE APPLICATION OF DAEM TO SIMULATION DISTILLATION OF COAL TAR

对分布活化能模型 ( DAEM)进行了新的理论阐述 ,不仅给出了分布活化能模型中活化能项的解析表达式 ,得到了 Miura积分法的理论证明 ,还系统研究了这一新的 DAEM表述对焦油馏分模拟蒸馏二级反应体系的适用性 .动力学分析表明 ,新的 DAEM表述能够给出同常规二级反应动力学极为一致的活化能值 ,证明了建立在一级反应假设基础上的 DAEM模型 ,在确立了新的活化能表述方式后 ,完全适用于非一级反应体系 ,从而能够反映非一级反应体系在反应过程中的活化能变化 .另外 ,通过对二级反应动力学方程进行理论分析 ,也得出了同 DAEM模型相同的活化能解析表达式 ,从而在理论上完成了

The new elucidation of distributed activation energy(DAEM) was given in which not only an analytic expression of activation energy was obtained for the first time,but also the theoretical proof of Miura′s integration method in DAEM model was realized.The application of this new elucidation to simulation distillation of coal tar showed very identical activation energy values with those obtained by second order reaction kinetics.Together with the same analytic expression of activation energy obtained from the theoretical analysis of second order reaction kinetics,the applicability of of DAEM model to second order reaction systems is proved theoretically and experimentally. 