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多孔固体催化剂的计算是反应器设计及催化剂评价中的一个重要问题。本文提出了一种球形催化剂n 级等温反应下的有效系数的新的求算方法——线族交点轨迹法。利用这一方法可以获得物料衡算微分方程的近似解析解,Y=(sh(AY~B·X)/(X·sh(AY~B))催化剂内部浓度剖面的计算结果与数值解十分吻合。催化剂有效系数由下式获得:η=3/φ~1(T_0)(A/(th(A))-1)其计算结果令人满意,相对偏差小于0.5%。
The calculation of porous solid catalysts is an important issue in reactor design and catalyst evaluation. In this paper, we propose a new calculation method for the effective coefficient of n-type isothermal catalyst reaction of spherical catalyst-line family intersection trajectory method. By this method, an approximate analytic solution of the equilibrium equation can be obtained. The calculation results of the internal concentration profile of Y = (sh (AY ~ B · X) / (X · sh (AY ~ B)) are in good agreement with the numerical solution The effective coefficient of the catalyst is obtained from the following formula: η = 3 / φ ~ 1 (T_0) (A / (th (A)) - 1) The calculated results are satisfactory and the relative deviation is less than 0.5%.