异形催化剂颗粒的性能预测与对比

研究了环形、车轮形及蜂窝形等异形催化剂颗粒的有效因子、固定床传热性能及其压降。在此基础上 ,从基本的传热、传质方程出发 ,对三种异形颗粒达到相同转化率所需的床高、催化剂用量以及在固定床中的传热、总床层压降等性能进行了对比与预测。

Comparative Predictions of Characteristics of Abnormal Shape Catalyst Particles

The technology of making abnormal shape catalyst particles is recently developed mainly for the enhancement of their effectiveness factors with low pressure drops in fixed-bed reactors．This paper presents the values of effectiveness factors of ring，wheel-shape and honeycomb shape catalyst particles，and of heat transfer parameters and pressure drop coefficients for fixed-bed packed with these particles．These results constitute the basis of further studies on the performance characteristics of fixed-bed reactors packed with particles of the above shapes．From the basic heat and mass transfer equations，the performance characteristics of these beds are comparatively predicted，including the reactor’s lengths and catalyst quantities，temperature-related characteristics and overall pressure drops，all at constant temperature with the same final conversion．