十字旋阀塔板的板效率研究  

Research on tray efficiency of cross-type valve tray

作　　者：赵培[1] 岳立平[1] 熊丹柳[1] 张秋香[1] 祁建伟[1] 张艳[1] 

机构地区：[1]华东理工大学化工学院,上海200237

出　　处：《化学工程》2011年第6期32-35,共4页Chemical Engineering(China)

摘　　要：在直径750 mm的热模塔内,以环己烷-正庚烷为物系,在常压全回流条件下研究了出口堰高对十字旋阀塔板各板效率及全塔效率的影响,并将十字旋阀和F1型浮阀塔板的全塔效率进行了比较。实验结果表明:在正常操作状态下,堰高由30 mm增加到50 mm,板效率可提高5%—12%。堰高为30 mm时,十字旋阀塔板的全塔效率比F1型浮阀塔板要高10%左右;堰高为50 mm时,二者的全塔效率相差不大;还通过AIChE模型和CCM模型(Chen,Chuang点效率模型结合Molnar涡流扩散模型)的计算来预测板效率,并将其结果与实验值进行比较,发现CCM模型值与实验值比较接近。The effects of different outlet weir heights on the tray efficiency and the overall column efficiency of cross-type valve trays were studied in a column with diameter of 750 mm in cyclohexane-heptane system under the conditions of full reflux and atmospheric pressure.Its overall column efficiency was also compared with that of F1 valve trays.The experimental results show that the tray efficiency can be enhanced by 5%-12% with the increase of outlet weir height from 30 mm to 50 mm in the normal operation.At the outlet weir height of 30 mm,the overall column efficiency of cross-type valve tray is 10% higher than that of F1 valve tray.However,there is no significant difference between the overall column efficiency of two types of valve trays when outlet weir height is 50 mm.The AIChE and CCM（Chen,Chuang point efficiency together with Molnar eddy diffusion correlation） models were involved to calculate the tray efficiency,and the comparison between experimental value and calculated value shows that the CCM model is closer to the experimetal tray efficiency.

关 键 词：十字旋阀塔板 堰高 Murphree板效率 阀孔动能因子 全塔效率 

分 类 号：TQ053.5[化学工程]