摘要
在直径500 mm的有机玻璃塔内,以空气为物系,对普通筛孔塔板和锥形筛孔塔板的干板压降进行测定,根据Hughmark-O'Connell关联式计算得到孔流系数。同时采用计算流体力学软件Fluent 6.0对塔内气体穿过筛孔时的压力和速率分布进行数值模拟,模拟结果与实验结果基本吻合,发现孔流系数逐渐增大到一定值后又逐渐减小,其间存在最优值,并对此进行了理论分析和解释。
Dry plate pressure drop of conventional sieve tray and tapered sieve tray were measured with air in a φ500 mm transparent tower made of polymethacrylate. Their discharge coefficients were obtained by Hughmark -O'Connell's correlation. Dry plate pressure drop of tapered sieve tray was lower than conventional sieve tray under same experimental conditions. Discharge coefficients of tapered sieve tray changed with the angle of tapered sieve hole and a maximum existed. Computational fluid dynamics (CFD) software Fluent 6.0 was used to simulate the pressure and velocity distribution of tapered sieve tray. The calculated results were basically in accordance with experiment data.
出处
《石油化工》
CAS
CSCD
北大核心
2004年第5期428-431,共4页
Petrochemical Technology
