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Desirable pH of Slurry in Desulfurization Absorber for a 1000 MW Coal Fired Power Plant  

Park, Jeong-kee (Korea East-West Power Co., Ltd.)
Yoo, Hoseon (Department of Mechanical Engineering, Soongsil University)
Publication Information
Plant Journal / v.15, no.1, 2019 , pp. 38-44 More about this Journal
Abstract
This research is an experimental investigation to find the desirable pH of slurry in the desulfurization absorber for a 1000 ㎿ coal fired power plant, operating in compliance with the Air Environmental Conservation Act and the plant's internal regulations. In case the average sulfur dioxide concentration in inflow flue gas, ${\bar{C\;in}}$ [ppm] changed to 500 ppm, 550 ppm, 600 ppm and 635 ppm after fixing inflow flue gas flow rate, generator output, pressure drop in the absorber, and oxidation air flow rate, the desirable pH of the slurry in the absorber, was 5.0, 5.2, 5.3 and 5.4. Thus, it is recommended that the desirable pH of slurry is calculated using the correlation equation, $RpH=0.0018{\times}{\bar{C\;in}}+4,2031$ when the average sulfur dioxide concentration in the inflow flue gas is in the range of 500 ppm to 635 ppm.
Keywords
flue gas desulfurization, FGD; absorber; sulfur oxides, SOx; limestone slurry pH;
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  • Reference
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