气液向上或向下并流固定床动持液量测定

In this work,at a pressure of 2.0 MPa and room temperature,the effects of gas and liquid flowrates, liquid viscosity and operation pressure on the dynamic liquid holdup were investigated in a downward flow and upward flow fixed-bed reactor. With an air-water-solid packing system, experimental results show that the dynamic liquid holdup increased with an increases of liquid mass flowrates.It decreased with an increasing of gas volume flowrates and porosity of packed bed. It was also shown that there was no large effect on dynamic liquid holdup with an increase of liquid dynamic viscosity. The correlations of dynamic liquid holdup was also given under these two kinds of operation.

高压下滴流床反应器动持液量的测定

在常压～２．０ＭＰａ 的系统压力下测定了滴流床中气－液两相并流往下流动的动持液量，讨论了气－液流率、液相粘度、填料大小、压力以及床层高度对动持液量的影响。实验结果表明增加液体流率动持液量增加，气体流率增加时，结果相反；粘度的增加对动持液量的影响不大；动持液量随填料空隙率的增大而变小。