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新结构95型塔板的流体力学性能

FLUID DYNAMICS CHARACTERISTICS OF TYPE-95 TRAY WITH A NEW STRUCTURE

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【作者】 郭敏强李鹏吴有庭肖剑张志炳

【Author】 Guo Minqiang, Li Peng, Wu Youting, Xiao Jian  and Zhang Zhibing (Department of Chemical Engineering, Nanjing University, Nanjing?210093)

【机构】 南京大学化工系!南京210093

【Abstract】 A new type of tray called Type-95 tray with a bigger effective mass transfer area and higher tray efficiency is developed and tested, whose downcomer structure is specially designed with a new concept. The fluid dynamics characteristics of the tray, i.e., pressure drop, weeping, liquid height in the downcomer and flow pattern on the tray, are determined on a test rig with a diameter of 1000 mm by air-water system at atmospheric pressure. The experimental results are compared with those of the traditional sieve tray. It indicates that the Type-95 tray has the advantage of lower pressure drop and bigger flux. The related mathematical equations for designing Type-95 tray are derived from the experimental data, which can be basically applied to the design of an industrial tray within allowable engineering deviation. In addition, the eddy and backmixing of liquid on the tray can be eliminated effectively by installing appropriate deflectors. As a result, the liquid flow pattern on the tray is almost changed into plug flow, which might cause an increase of mass transfer efficiency of the tray.

【关键词】 95型塔板流体力学测定塔板设计
【Key words】 Type-95 trayfluid dynamicsmeasurementtray design
【基金】 江苏省自然科学基金
  • 【文献出处】 化工学报 ,JOURNAL OF CHEMICAL INDUSTRY AND ENGINEERING(CHINA) , 编辑部邮箱 ,2000年03期
  • 【分类号】TQ053.5
  • 【被引频次】34
  • 【下载频次】129
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