摘要
液体并流塔板,即相邻2层塔板上液体流动方向相同,能有效提高塔板效率。文中介绍了国内外并流塔板的板效率模型的发展状况,对国内外开发的各种并流塔板结构及性能进行了分析,并考察了立体传质塔板的性能及工业应用情况。为了开发适合大塔径的高效塔板,基于液体并流板型能提高板效率的机理,结合性能优良的立体传质塔板,采用特殊的降液结构,提出了一种新型液体并流复合塔板的结构型式。新型塔板具有气、液体处理量大、传质效率高、操作弹性大的特点,而且有效避免了普通逆流板型的液体滞留区的产生。
The parallel flow trays on which liquid flows in the same directions on successive trays can enhance plate efficiency availably.The development of national and international models of plate efficiency of parallel flow trays was introduced.The structure and performance of parallel flow trays exploited at home and abroad were analyzed,and the circumstances of performance and industrial applications of Combined Trapezoid Spray Tray（CTST） were investigated.A new structure of parallel flow composite trays was presented to exploit high mass transfer efficiency tray suited for big column diameters,based on the mechanism that parallel flow trays can improve plate efficiency.New trays used the characteristic configuration of down comer,and they were combined with CTST which has good performance.Their characteristic properties include large capacity of gas and liquid treatment,high mass transfer efficiency,a wide range of loading.And they can avoid the liquid stagnation zone which occurs in common countercurrent trays.
出处
《化学工程》
CAS
CSCD
北大核心
2010年第10期33-36,共4页
Chemical Engineering(China)
基金
石家庄科学技术研究与发展项目(10108481A)
关键词
液体并流
并流塔板
塔板效率
进展
parallel liquid flow
parallel flow trays
plate efficiency
progress
