Abstract: The mass transfer specific area of gas liquid of microporous membrane gas distributor was investigated. While the different effect factors of specific surface area were reviewed，mainly including gas flux，liquid height，surface tension，etc. Experimental results represent mass transfer specific area of gas liquid was increased with increased gas flux while gently decreasing at the high point，decreased with increased surface tension and decreased by inches with rised liquid height. They indicated mass transfer specific area of gas liquid was higher than that in conventional tower and microporous gas distributor extremely strengthened the gas liquid mass transfer. A correlation was nonlinearly regressed with experimental data by the way of the dimensional analysis. The expression correlates well the experimental data.

摘要： 研究了以微孔膜作为气体分布器的反应器的气液传质比表面积，主要考察了气体流量、液面高度、表面张力等操作因素对气液传质比表面积的影响。结果表明，气液传质比表面积随着气体流量的增大先呈增大的趋势，到一定值时，开始呈减小趋势；随着表面张力的增大而减小；随着液面高度的增大缓慢减小。与传统塔设备比较，微孔膜气体分布器的气液传质比表面积要高，分布器强化了气液传质过程。最后，运用量纲分析方法对试验数据进行非线性回归得到关于气液传质比表面积的关联式，此式较好地吻合了试验数据。