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Desirable pH of Slurry in the Desulfurization Absorber for a 200 MW Anthracite Power Plant  

Choi, Hyun-Ho (Korea Midland Power co., Ltd.)
Yoo, Hoseon (Department of Mechanical Engineering, Soongsil University)
Publication Information
Plant Journal / v.16, no.1, 2020 , pp. 38-43 More about this Journal
Abstract
In this study, Seochon Thermal Power Plant No.1 for anthracite coal was tested to find the proper operation range of limestone slurry pH in the absorber tower which can be operated continuously in compliance with the Air Quality Preservation Act and Seocheon Thermal Power Division's internal regulation, sulfur dioxide average emission regulation. When operating the sulfur dioxide concentration [ppm] in the combustion gas flowing into the desulfurization absorption tower at 370, 400, 460 and 550 ppm while the main operating elements such as the flow rate of the combustion gas were fixed, the proper slurry pH Were 4.4, 4.5, 4.8 and 5.1, respectively. Therefore, it is recommended to operate with the correlation equation, RpH=0.004×Cin+2.93 derived using sulfur dioxide and the appropriate slurry pH.
Keywords
Flue Gas Desulfurizer, FGD; Absorber; Limestone Slurry pH; SO2 Concentration;
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  • Reference
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