文献类型：期刊文献

中文题名：Directed Valve Trays

英文题名：Directed valve trays

作者：Li, Yu'an[1]; Zhao, Pei[1]; Liu, Ji[1]; Zhang, Jiexu[1]; Lu, Xiulin[1]

机构：[1]E China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China

年份：1998

卷号：6

期号：1

起止页码：91

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：CSTPCD;;EI(收录号：1998264179926);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000072997500012)】；CSCD:【CSCD2011_2012】；

语种：英文

中文关键词：valve;tray;plate;efficiency;pressure;drop;entrainment;weeping

外文关键词：valve tray; plate efficiency; pressure drop; entrainment; weeping

摘要：1 INTRODUCTIONValve tray columns are one of the most important mass transfer equipment for vapor-liquidoperations and are widely used in the petroleum and chemical industries.They have good op-erating performances with floatable parts on the trays.There are various of valve trays,andType V1(F1-type)valve trays are used very common in industry.Though Type V1 valvetrays have a number of advantages,it has been found in recent years that there are also cer-tain drawbacks,for example,higher hydraulic gradient on the tray,more backmixing
The directed valve trays are a new invention with a novel structure and an excellent operating performance. It is the best of all valve-type trays known. In comparison with Type V1 valve trays, the capacity of the directed valve trays can increase by 20%-30%, the tray efficiency increases by 10%-20%, and the pressure drop is decreased by about 20%. A considerable economic result can be obtained if the Type V1 valve trays of a column are replaced by the directed valve trays.