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29 November 2021 Numerical study of hybrid SNCR-SCR process in a 65 MW gas-fired boiler
Cong Yu, Ling Shi, Jiaying Hu, Hongjiao Liu
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Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 1208030 (2021) https://doi.org/10.1117/12.2620398
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China
Abstract
To investigate the effects of boiler designs on the performance of the hybrid SNCR-SCR process, a 65 MW gas-fired boiler was studied, which uses the blast furnace gas generated from a steel refinery as the fuel. A full-size 3-dimensional model of the boiler was established, and the EDC model was employed to consider the turbulent interaction and the detailed SNCR and SCR reactions. The relative errors between the modeling results and the design data are less than 10% and are in an acceptable range. The results show that, compared to the boiler arranged with a fuel preheater, the boiler equipped with a low-pressure economizer has a slightly higher SNCR DeNOx efficiency, an obvious lower SCR DeNOx efficiency, and a lower concentration of the escaped ammonia.
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Cong Yu, Ling Shi, Jiaying Hu, and Hongjiao Liu "Numerical study of hybrid SNCR-SCR process in a 65 MW gas-fired boiler", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 1208030 (29 November 2021); https://doi.org/10.1117/12.2620398
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KEYWORDS
Mathematical modeling
Numerical modeling
Pollution control
Systems modeling
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