计算多孔催化剂有效因子的区域分割法  

DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS

作　　者：陈尚伟[1] 

机构地区：[1]四川轻化工学院轻工系,自贡643033

出　　处：《化工学报》1997年第5期600-607,共8页CIESC Journal

基　　金：四川省教委自然科学科研基金资助项目[川教科(1995)36号]

摘　　要：提出了计算多孔催化剂颗粒有效因子的区域分割法,将整个一维区间划分为几个子区间,然后在每个子区间内用一点配置法求解非线性扩散-反应问题.采用区域分割法,针对三种不同形状的催化剂颗粒,对幂函数型动力学方程和双曲型动力学方程进行了大量的计算.所得的计算结果与正交配置解吻合.区域分割法的优点是使用简便、计算快速.采用区域分割法还可以计算催化剂颗粒死区半径,所得计算结果合理.The domain division method for determining effectiveness factors of porous catalyst pellet is presented. By applying this method, the entire one - dimensional domain is divided into several equidistant subdomains and the nonlinear diffusion - reaction problems in a porous catalyst pellet are solved by using the one - point collocation method within each subdomain. In using the domain division method to determine the effectiveness factors of porous catalysts, a lot of calculations are made with power law type kinetic expressions and Langmuir - Hinshelwood kinetic expressions for three catalyst pellets. The agreement of the calculated results of this method with orthogonal collocation solution is satisfactory. The domain division method is simple for use and is not time consuming. The radius of dead zone can also be determined by using the domain division method, and the calculated results are reasonable.

关 键 词：有效因子 区域分割法 催化剂 计算 多孔催化剂 

分 类 号：O643.36[理学—物理化学]