DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS

陈尚伟

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DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS

更新时间：2025-12-16

- DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS
- CIESC Journal Issue 5, (1997)
- 作者机构：
  
  四川轻化工学院轻工系,自贡,643033
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q032
- Online First：25 October 1997，
  
  Published：25 October 1997
- 稿件说明：
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陈尚伟. DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS[J]. CIESC Journal, 1997, (5).
DOI：

陈尚伟. DOMAIN DIVISION METHOD FOR DETERMINING EFFECTIVENESS FACTORS OF POROUS CATALYSTS[J]. CIESC Journal, 1997, (5). DOI：

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.

Abstract

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.

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