关键词: 传质, 鼓泡塔, 流体力学, 工业应用

Abstract: Float valve tower is a widely used vapor-liquid mass transfer equipment. The new valve trays developed from F1 valve tray in China are introduced. These new value trays have lower pressure drop，lower entrainment rate，lower weeping rate，and higher processing capacity. The structure，hydrodynamics，mass transfer efficiency，advantages and disadvantages are summarized，focusing on time of development and type of tray. Valve tray design and development concepts of each series are summarized. The successful example of directed valve trays applications in Qilu Petrochemical butadiene unit is described. The quality of product and tray loading rate are greatly improved. Some common trays used in industrial production are introduced. The development ideas of these new valve trays are described. The float valve is mainly bar shape and a directed hole is opened in most valve trays. Future research and development of tray technology are prospected.

Key words: mass transfer, bubble column, fluid mechanics, industrial applications