Amy century resurgence here for more favorable recommendations from the "save operating costs and reduce tons of sinter desulfurization costs" perspective to make the right choice, here is a brief introduction to some wet FGD technology: wet FGD Technical lime - gypsum wet flue gas desulfurization process of lime - gypsum wet flue gas desulfurization process is mainly used as a cheap and easy to get the lime desulfurization absorber, crushed lime and ground into a powder made from mixing water absorption slurry. When using lime as the absorbent, lime powder after digestion treatment made from mixing with water absorption slurry. In the absorber, the flue gas in contact with the absorbent slurry is mixed with the slurry in the flue gas of sulfur dioxide and calcium oxide in the air blown into the removal of a chemical reaction is absorbed, the final product is gypsum. FGD turn after the droplet through the demister, heater warming removed from the booster fan through the chimney emissions and slag desulfurization gypsum can utilization. The reaction mechanism of the process are: the absorbent lime absorption: SO2 (g) → SO2 (l) + H2O → H + + HSO3 - → H + + SO3 2 - dissolved: Ca (OH) 2 (s) → Ca2 + +2 OH-CaSO3 (s) → Ca2 + + SO3 2 - neutralization: OH-+ H + → H2O OH-+ HSO3 - → SO3 2 - + H2O Oxidation: HSO3 - +1 / 2O2 → SO3 2 - + H + SO 3 2 - +1 / 2O2 → SO4 2 - Crystallization:? Ca2 + + SO3 2 - +1 / 2H2O → CaSO3 1/2H2O (s) Ca 2 + + SO4 2 - +2 H2O → CaSO4 2H2O (s) in our country? Chongqing Luohuang first introduced in Japan Mitsubishi lime - gypsum wet desulphurization process, desulfurization unit with two 360MW coal-fired units matched. Units was 4.02% sulfur coal, sulfur dioxide concentration of flue gas desulfurization apparatus of the inlet 3500ppm, more than 95% desulfurization efficiency design. Recent years, the operation of the plant, the desulfurization efficiency of the process is high, good environmental characteristics. However, there are more stringent equipment fouling, corrosion is more serious. Sintering machine because those features mentioned earlier, the flue gas composition is more complex, with more debris also, so from Baosteel to Shougang, a process which was generally considered unsuitable for sintering flue gas desulfurization field.