Re-entrainment in horizontal wave-plate demisters

Wave plate demisters are among the most effective devices to separate liquid from the gas. Liquid separation efficiency in these devices is largely dependent on the gas superficial velocity. However, the upper limit of gas throughput is restricted by the re-entrainment of the deposited liquid off the separator surfaces into the gas stream. There is some knowledge available of re-entrainment phenomenon in vertical wave plate separators, The present study aims to characterise the boundaries for air and liquid rates at which entrainment starts for horizontal wave-plate separators. Both experimental and theoretical work has been undertaken to highlight re-entrainment phenomenon at critical and beyond gas to liquid ratios.