板波纹规整填料液相分布模型  

Liquid Distribution Model for Sheet Corrugated Structured Packing

作　　者：谷芳 刘春江[1] 袁希钢[1] 余国琮[1] 

机构地区：[1]天津大学化工学院化学工程联合国家重点实验室,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2005年第7期586-591,共6页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(20206021);天津市自然科学基金资助项目(023606711)

摘　　要：为研究板波纹规整填料内的液体流动状况,建立了相应的液相分布数学模型,并对4种板波纹规整填料的持液量和有效润湿面积进行了模拟计算及实验验证.结果表明,在无气相影响下,无论是均匀进料还是点源进料,液体在填料内的分布最终将达到稳定的自然流状态,而有效润湿面积的模拟结果显示,无气相影响时,即使在很大液相负荷下填料片的有效润湿面积比也不会超过1.另外,降低液体表面张力有利于在填料片上形成较大的润湿面积,而液体黏度对润湿面积的影响不大.A mathematic model for liquid distribution in sheet corrugated structured packing was proposed in order to provide much accurate and reliable liquid distribution. The liquid holdups and effective wetted areas of 4 types of structured packing were simulated by the model and validated by relevant experiments. It shows that, under the condition of no gas flow, liquid distribution in structured packing will become a steady natural flow pattern ultimately, whether uniform feeding or point feeding is given. It also shows from the simulative effective wetted area that the ratio of the effective wetted area will not be larger than 1 even when there is no gas flow. In addition, decreasing liquid surface tension will be beneficial to form larger wetted area on the packing surface. However, liquid viscosity only has a little effect on the wetted area.

关 键 词：板波纹规整填料 液相分布模型 持液量 有效润湿面积 

分 类 号：TQ053.5[化学工程]