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Low NOx Combustion and SCR Flow Field Optimization in a Low Volatile Coal fired boiler (CROSBI ID 654084)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Liu, Xing ; Tan, Houzhang ; Wang, Yibin ; Mikulčić, Hrvoje ; Vujanović, Milan ; Duić, Neven Low NOx Combustion and SCR Flow Field Optimization in a Low Volatile Coal fired boiler // Digital Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES / Ban, Marko et al. (ur.). Zagreb: Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2017

Podaci o odgovornosti

Liu, Xing ; Tan, Houzhang ; Wang, Yibin ; Mikulčić, Hrvoje ; Vujanović, Milan ; Duić, Neven

engleski

Low NOx Combustion and SCR Flow Field Optimization in a Low Volatile Coal fired boiler

Low NOx burner redesign and deep air staging have been carried out to optimize the poor ignition and reduce the NOx emissions in a low volatile coal fired 330 MWe boiler. Residual swirling flow in the tangentially-fired furnace caused the flue gas velocity deviations at furnace exit, leading to flow field unevenness in the SCR system and poor denitrification efficiency. Numerical simulations on the velocity field in the SCR system were carried out to determine the optimal flow deflector arrangement. Full-scale experiment was performed to investigate the effect of low NOx combustion and SCR flow field optimization. Compared with the results before the optimization, the NOx emissions at furnace exit decreased from 550~650 mg/Nm³ to 330~430 mg/Nm³. The sample standard deviation of the NOx emissions at the outlet of SCR decreased from 34.8 mg/Nm³ to 7.8 mg/Nm³. The consumption of liquid ammonia reduced from 150~200 kg/h to 100~150 kg/h after optimization.

NOx ; burner ; coal combustion ; air staging ; low volatile coal ; flow field optimization

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Podaci o prilogu

2017.

objavljeno

Podaci o matičnoj publikaciji

Digital Proceedings of 12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES

Ban, Marko et al.

Zagreb: Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu

1847-7178

Podaci o skupu

12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES

predavanje

04.10.2017-08.10.2017

Dubrovnik, Hrvatska

Povezanost rada

Strojarstvo