Hydrodynamic and Mass Transfer Performance Study of HEFV Tray

New HEFV(half-ellipse fixed valve) tray which has some improvements on traditional fixed valve trays was presented.The hydrodynamic and mass transfer performance of HEFV tray,sieve tray and F1 valve tray were experimentally studied with air-water-oxygen system in a 1 200 mm stainless steel column.The results show that HEFV tray possesses a little higher pressure drop,less entrainment,lower weeping and higher efficiency than sieve tray as well as lower pressure drop,less entrainment,higher weeping and higher efficiency than F1 valve tray,which demonstrates that HEFV tray owns super performance.