Study on the Reaction Characteristics of Flue Gas Desulfurization by Magnesia

Desulfurization technics has been popularly applied to reduce the harmfulness of sulfur dioxide. The reaction characteristics of flue gas desulfurization by magnesia were studied using a lab-scale bubbling apparatus. The effects of concentration of the reagent, flux of the flue gas, concentration of sulfur dioxide, temperature of the absorbent, and bubbling depth on the desulfurization efficiency was investigated with the parameters close to the practice. The experimental results indicate that the desulfurization efficiency is greatly influenced by flue gas flux, sulfur dioxide concentration and bubbling depth. The desulfurization reaction is controlled by the mass transfer of sulfur dioxide from the gas to the reagent solution.