Abstract
Mass transfer in the absorption of lean NH3 with water spray is examined under various experimental condition, using a small spray column. The absorption rates of NH3 are affected by both gas- and liquid-phase mass transfer resistances in the vicinity of the nozzle exit. The observed gas phase diffusion fluxes of NH3 show good agreement with the empirical correlation by Ranz-Marshall.Taking the effect of gas- and liquid phase mass transfer resistances on the absorption rates into consideration, a new simulation technique is proposed for the absorption of lean gas using a small spray column. The present model can accurately predict the amount of absorbed NH3 by water spray.
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