活性颗粒固定架床层压降的实验测定

Experimental Determination of the Bed Pressure Drop of Structured Frameworks for Activated Particles

设计制作了多种型号活性颗粒规整固定架 ,对是否装填活性颗粒固定架的压降性能进行了测试。结果表明干塔床层压降较小 ,湿床层压降较大。对活性颗粒不同装填方式的流体力学性能测试表明 :活性颗粒散堆在床层中压降最大 ,装填在固定架中床层压降降低比较明显。床层压降也受固定架空隙率。

Various models of structured frameworks for fixing activated particles (such as catalyst, absorbent, drier) have been designed and tested in a column with a diameter of 120mm and a bed height of 1000mm to compare the bed pressure drop with different fitting measures. The hydrodynamic characteristics of these frameworks with or without particles are studied respectively. The effect of the flow rate of air and water on the bed pressure is measured over a wide range of flow rate. It is demonstrated that the bed resistance is low in a dry bed, while very high in a wet bed. Conclusions can be drawn over various fixing method that the bed resistance is the highest when the particles are dumped in the bed, and lower for other fixing cases, whatever the bed is wet or dry.