球形和圆柱形催化剂载体颗粒尺寸的优化研究  

Size Optimization of the Spherical and Cylindrical Catalyst Carriers

作　　者：朱神平 陈志[1] 黄昆明 麻强 唐超[1] 李建明[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]中国化学工程第六建设有限公司,湖北襄阳441024

出　　处：《四川化工》2016年第6期14-20,25,共8页Sichuan Chemical Industry

摘　　要：催化剂载体颗粒床层是烟气催化脱硫的重要组成部分。选择适当的催化剂载体颗粒对提高脱硫效率和降低能耗有重大意义。通过对不同尺寸的球形和圆柱形催化剂载体的理论和实验研究．探明催化剂载体形状和尺寸对床层空隙率和床层比表面积的影响，研究催化剂载体形状和尺寸对床层阻力的影响。提出床层阻力计算公式。优选出载体最佳的形状和尺寸。研究表明球形颗粒直径在6～8mm之间较合适．圆柱形载体当量直径在5．5mm左右较合适，且相同当量直径情况下．空心圆柱体载体比实心圆柱体载体压降要小。Catalyst bed packed by solid particles or catalyst carriers is an important part of the catalytic des- ulfurization technology. It is of great significance to choose appropriate particles as the catalyst carriers in order to improve the desulfurization efficiency and reduce energy consumption. To ascertain how the shape and size of the particles affect the bed voidage, specific surface area and pressure drop, theoretical analysis and experiments were completed using catalyst carriers with different shapes and different sizes. The equa- tions were then proposed to predict the pressure drop of the packed bed and optimize particles＇ shape and size. It is shown that the appropriate equivalent diameter of the cylindrical carrier is about 5.5mm, and the hollow cylindrical carriers are of spherical particles range from 6 mm to 8 mm, the appropriate better than solid cylinder ones with the same equivalent diameter to reduce pressure drop.

关 键 词：床层压降 催化剂载体 床层空隙率 床层比表面积 

分 类 号：O643.36[理学—物理化学]