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Effect of addition of a catalystic layer on Denitrification System efficiency in a 500 MW Coal-fired Power Plant  

Lee, Sang Soo (Department of Power Engineering, Hanyang University)
Moon, Seung-Jae (Department of Mechanical Engineering, Hanyang University)
Publication Information
Plant Journal / v.17, no.1, 2021 , pp. 58-66 More about this Journal
Abstract
The government has recently come up with a policy to tighten regulations on air pollutant emissions due to public concerns over the emission of pollutants such as fine dust. The coal-fired power plant is speeding up the improvement of the performance of environmental facilities, and this paper deals with the cases of performance improvement by adding a catalyst to the 500 MW standard coal-fired power DeNox system, and examines the change in the performance factors according to the addition of catalysts and the efficiency of NOx removal. The DeNOx efficiency before and after improvement increased from 80% to 88%, and the conversion rate of SO2/SO3, ammonia slip which are performance factors satisfied the design assurance value, but exceeded the design assurance value for differential pressure. At the same time, the ammonia slip concentration and differential pressure items increased as the NOx removal efficiency increased, resulting in the need for management and improvement.
Keywords
Denitrification system; Denitrification system efficiency; Ammonia Slip concetration; Pressure drop; NH3 Consumption;
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1 Kwang Hee Park, Jun Yub Lee, Sung Ho Hong, Sang Hyun Choi, Sung Chang Hong, 2008, "A Study on the Deactivation of Commercial DeNox Catalyst in Fired Power Plant", Applied Chemistry for Engineering, Vol.19, No 4, pp 376-380
2 Senghee Youn, 2014, "Effect of preparation conditions of V2O5/TiO2 Catalysts for selective catalytic reduction of NOx with NH3", Master's degree thesis of Seoul National University, p 44.
3 Moon Hyeon Kim, 2016, "Performance Management of a DeNox System for Stationary Sources and Regeneration Strategies of DeNOx Catalyst", Clean technology, Vol.22, No 3, p152.
4 Min Su Park, 2014, "Reduction of Nitrogen Oxides Generation by Adjusting Combustion Conditions in a 350 MW Oil-Fired Power Plant", Master's degree thesis of Hanyang University, pp. 7, pp. 31
5 Da Doo Lim, 2015, "A Study on the NOx reduction technology of tangential corner firing boiler in 560 MW class coal fired power plant", Master's degree thesis of Yonsei University, p. 53.
6 Ju Kyung Park, 2014, "Correlation analysis of NOx concentration at the inlet of De-NOx system and influence factors in a natural gas fired thermal power plant", Master's degree thesis of Hanyang University, p. 10.
7 Korea Power Learning Institute, 2016, "Air Environment Facility Practice", pp. 122-128.
8 Korea Midland Power Company, 2017, "Standard for diagnosis of atmospheric environment facilies".
9 Ki-Ryoung Jung, 2013, "Prediction of Velocity distribution at inlet region of catalyst in a De-NOx system", Master's degree thesis of Hanyang University, pp. 4-7.
10 Dong Wook Kwon, Sung Chang Hong, 2016, "Selective Catalytic Reduction(SCR) Technology Trends for the Nitrogen Oxide Removal of Exhaust Gas", Korean Industrial Chemistry News, Vol.19, No 5, pp 17-18, p.21.
11 Jingjing Bao, Lin Mao, Yuhua Zhang, Hongmei Fang, Yajuan Shi, Linjun Yang, Hongmin Yang, 2016, "Effect of Selective Catalystic Reduction System on Fine Particle Emission Characteristics", Energy & Fuels, P.1325.
12 Joseph P. Dunn, Prashanth R. Koppula, Harvey G. Stenger, Israel E. Wachs, 1998, "Oxidation of sulfur dioxide to sulfur trioxide over supported vnandia catalyst", Applied catalyst B 19, p. 104.
13 Korea Midland Power Company, 2020, "Reports on Denitrification system of the distribution adjustment and performance test results for Units 4-6 in 2020.
14 Korea Midland Power Company, 2020, "Reports on test results to derive optimal operation plan for Denitrification system.
15 Korea Midland Power Company, 2019, "Reports on Denitrification system of the distribution adjustment and performance test results for Units 3-6 in 2019.