计算梅花扁环压降和泛点气速的新方法

随着装置大型化和节能减排要求的不断提高,有必要对QH-2型扁环填料用于气液传质过程的设计计算方法作进一步研究,为推广应用提供更为可靠的依据。文中在Φ600mm的实验塔内用水-空气体系,在很宽的喷淋密度范围内0—200m3/(m2·h)],系统研究了QH-2型扁环填料的流体力学性能。在大量实验数据和对多种数学模型进行比较的基础上,提出了采用改进的Billet模型计算压降和基于流动参数计算液泛气速的新方法。

New models for pressure drop and flooding velocity of plum flower mini ring

In order to meet higher demands of energy saving and environmental protection,it is necessary to improve the scale-up procedure of plum flower mini ring (PFMR,QH-2),thus providing a reliable basis for its application. Over a wide range of liquid loading 0-200 m3/(m2·h)],the hydrodynamics models of PFMR were systematically studied in a 600 mm diameter column with air-water system. Based on the large number of experimental data and the comparison of many kinds of mathematic models,a modified Billet equation for pressure drop calculation and a new equation for flooding velocities estimation based on flow parameter were proposed.