New types of vibrating-va lve trays with textile valves were investigated to determine their optimal construction. Hydrodynamic and mass transfer measurements were carried out in a pilot plant with different vibrating-valve and conventional valve trays under identical experimental conditions. The total tray pressure drop (Dp), column efŽ ciency (g), volumetric mass transfer coefŽ cient (KGa) and pressure drop per theoretical tray (Dp/Nth) were measured and compared.
The high mass transfer rate, the low investment and operating costs, the corrosion and heat
resistance make the vibrating-va lve trays attractive for gas absorption and air cleaning in
environmental protection.