Abstract: Based on a proposed model that the growth of mean bubble diameter along the height of bed is proportional to average degree of bubble separation in the level, and a lot of existent experimental data, it has derived that the following calculation equation for bubble growth along the height of bed In addition, based on a simplified model of initial bubble diameter that is proportional to vertical centric distance of two adjacent bubbles, and the existent experimental data, the calculation equation of initial bubble diameter DBO was obtained- According to the obtained equation and the assumption that the bed expansion in a bubbling fluidised bed caused by existence of bubble only, the calculation equation of expansive height of bubbling fluidised bed was presented.

摘要： 根据文中提出的沿单位床层高度气泡平均直径的长大与气泡在水平面内的平均分开程度成比例的简化模型和已有的大量实验数据,获得了气泡沿床高长大的计算方程 本文还根据两相邻生成的初始气泡的垂直中心距与初始气泡直径成正比的简化模型及已有的实验数据,提出了初始气泡直径D_B_0的计算方程 基于上述获得的方程式以及假定鼓泡流化床的床层膨胀纯因气泡存在所造成,本文还导得了自由鼓泡流化床膨胀高度的计算式