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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.12
- 수록면
- 72 - 89 (18page)
이용수
초록· 키워드
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Ozone injection is an effective way to oxidate Hg<SUP>0</SUP> in flue gas. The reacting flow field for the oxidation of Hg<SUP>0</SUP> by O₃ is numerically studied in detail with a reduced chemical mechanism in this paper. Based on sensitivity analysis with detailed chemical mechanism, a 12-steps reduced chemical mechanism is obtained and used in the following three-dimensional simulations of the reacting flow field. Through the reacting flow field simulation, the influence of various factors on Hg0 oxidation efficiency is calculated and analyzed, such as O₃ /NO molar ratios, jet velocities, moisture, temperatures, NO concentrations and Hg<SUP>0</SUP> concentrations. Results show that temperature and O₃ /NO molar ratio are the key factors, jet velocity and NO concentration are the important factors, while water content has little effect. It is also found that the oxidation efficiency of Hg0 is shown to be highly correlated with the amount of NO₃ generated in the flue gas. Increasing the local generation of NO₃ may be the key to achieve efficient oxidation of Hg<SUP>0</SUP>. This study is good help of subsequent engineering applications.
목차
ABSTRACT
1. Introduction
2. Numerical Method
3. Results and Discussion
4. Conclusion
References
참고문헌 (32)
참고문헌 신청
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Zhan FM, Li CT, Zeng GM et al. Experimental study on oxidation of elemental mercury by UV/Fenton system. Chem. Eng. J. 2013;232:81-88 https://doi.org/10.1016/j.cej.2013.07.082.
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Ci ZJ, Zhang XS, Wang ZW. Enhancing atmospheric mercury research in China to improve the current understanding of the global mercury cycle: The need for urgent and closely coordinated efforts. Environ. Sci. Technol. 2011;46:5636-5642. https://doi.org/10.1
Zhan FM, Li CT, Zeng GM et al. Experimental study on oxidation of elemental mercury by UV/Fenton system. Chem. Eng. J. 2013;232:81-88 https://doi.org/10.1016/j.cej.2013.07.082.
Pavlish JH, Sondreal EA, Mann MD et al. Status review of mercury control options for coal-fired power plants. Fuel. Process. Technol. 2003;82:89-165. https://doi.org/10.1016/S0378-3820(03)00059-6.
Zheng YJ, Jensen AD, Windelin C, Jensen F. Review of technologies for mercury removal from flue gas from cement production processes. Prog. Energ. Combust. Sci. 2012;38:599-629. https://doi.org/10.1016/j.pecs.2012.05.001.
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