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Desulfurization efficiency of the power plant , considering the correlation between desulfurization operating parameters , according to the requirements of the energy consumption as well as FGD gypsum , the experiment showed that the 325 days of 95% through the limestone particles suitable for use in wet flue gas desulfurization best the conditions for the flue gas flow rate control of the desulfurization tower at 3.5m / s ~ 4.5m / s, pH value is maintained at between 5.25 ~ 5.35 , the liquid-gas ratio L / G design value of about 15 , Ca / S ratio control 1.02 to 1.05, and the flue gas contact time of 2.5s ~ 4.5s, the circulating slurry of solid matter containing a concentration of 10 % to 15% , the slurry residence time greater than 5 minutes , chlorine ion control within 100001ng / L , magnesium salt, not more than 5000 mg / L, the oxygen control more than 5.5% of the original flue gas temperature was controlled at about 130 ℃ , net flue gas temperature at 85 ℃ , the fly ash concentration control in 100mg/Nm3 , carbon dioxide concentration of control in the vicinity of 5.5% .
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