Wave-Directed Floating Valve Tray Efficiency Research

In this paper, the influences of operating and tray structure parameters on mass transfer properties of wave-directed floating valve were studies in the rectifying tower. Among them, the operating parameters were Fo-factor and reflux temperature. Structural parameters included four tray positions, three outlet weir heights and four hole area percents. When the outlet weir height was50mm and the hole area percent is about8.47%, the efficiencies of second tray, the third tray and the whole column of F1floating valve and the cross-type valve trays was compared. The experimental results showed that:when the temperature of the reflux increased from61-66℃to73-76℃, the efficiency increased nearly10%; The efficiencies of the second and third tray were more stable than the first and fourth tray; The Murphree and whole tower efficiencies of the tray with50mm outlet weir height were higher and more stable than those of the30mm and70mm weir height; The larger hole area percent was more suitable for bigger F0-factor, and Murphree efficiency of tray was higher too, but it was not obvious to the whole tower efficiency. What’s more, based on the third tray, the experimental results compared with the AICHE, Chen-Fair and Chen-Chuang classic efficiency models, and the errors were within10%. Those proved that the experimental results were reliable and the wave-directed floating valve tray was a kind of high efficiency and stable mass transfer plate.