Factors Affecting Slurry Oxidation in a Wet Flue Gas Desulfurization Process

被引:5
|
作者
Ma, Shuangchen [1 ]
Xu, Fang [1 ]
Xu, Dongsheng [2 ]
Li, Defeng [2 ]
Yu, Yanfei [1 ]
机构
[1] North China Elect Power Univ, Sch Environm Sci & Engn, MOE Key Lab Resources & Environm Syst Optimizat, 689 Yonghua North St, Baoding 071003, Peoples R China
[2] Huadian Qudong Elect Supply Co Ltd, 5 Wuyang St, Xinxiang 453000, Henan, Peoples R China
关键词
Flue gas desulfurization (FGD); Slurry oxidation; Oxidation reduction potential (ORP); Influencing factor; Orthogonal test; Wet FGD; SULFITE OXIDATION; ORP; SPECIATION; EFFICIENCY; KINETICS; REMOVAL; SYSTEMS;
D O I
10.1061/(ASCE)EE.1943-7870.0001563
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
At present, wet flue gas desulfurization (FGD) systems offer insufficient control of the oxidation process. This study proposes to optimize the oxidation process of desulfurization slurry by an oxidation reduction potential (ORP) control strategy. By designing a L16(45) orthogonal test, the effects of temperature, concentration, rotation speed, air flow rate, and pH on ORP were investigated at different oxidation stages of CaSO3. Based on the analysis of variance, the order of contribution of different influencing factors at the specific oxidation stage was obtained. The influence degree of specific influencing factors on ORP was different, and the trend is explained for each different oxidation stage as well. The results indicate that only the temperature plays a significant role in the change of ORP during the whole oxidation process, which clarifies that the temperature affects the oxidation process of CaSO3 by affecting the dissolution of O2 and CaCO3 and the transformation of S(IV) to S(VI). The results also provide theoretical guidance for precise oxidation control of the FGD slurry system.
引用
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页数:7
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