Emission standards for SO2 are gradually becoming tighter all
over the world. Research and development of the FGD technology
has been focusing on improving the removal efficiency, minimizing
water and energy consumptions [4]. One key way to achieve
a high degree of SO2 removal while at the same time minimizing
the operation costs is to control the optimum operating parameters.
In this paper, the SO2 removal for wet FGD technology with
limestone slurry was tested under different operating conditions
including the pH value, the droplet size, the limestone concentration,
the gas and liquid phase flow rates. The one-dimensional
model of the external mass-transfer on both the gas and liquid
sides with the effects of a chemical enhancement factor and sulfite
concentration in the liquid phase to estimate the SO2 removal
efficiency, has been developed.