ORP as slurry oxidation index and model modification in wet desulfurization system |
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| Authors: | Shuang Chen Ma Fang Xu Defeng Li ShuaiJun Fan Dongsheng Xu Caini Ma |
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| Institution: | 1. Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University , Baoding, People’s Republic of China msc1225@163.com;3. Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University , Baoding, People’s Republic of China;4. Huadian Qudong Electricity Supply Co., Ltd ., Xinxiang, People’s Republic of China |
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| Abstract: | ABSTRACT Due to wet desulfurization system lacks effective control indicators for the oxidation process, so the sulfite oxidation in the slurry and the quality of gypsum become unstable. In this paper actual desulfurization system operation data are used to improve the ORP semi-empirical formula obtained in the laboratory. It was concluded that the ORP was mainly affected by the concentration of sulfite and pH during the operation of the actual desulfurization system, the dissolved oxygen was less affected by the small concentration change during operation. It is verified that the model can correct the ORP measurement value by using other conventional measurement data from the power plant. The results can provide theoretical support for adding ORP as a control index to optimize the oxidation process. |
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