Nitric oxide emissions and combustion performance of nontraditional ring-fired boilers with furnace geometries

Sung, Youl-Moon; Choi, Cheolyong; Moon, Cheoreon; Eom, Seongyong; Lee, Jong-Jae; Kim, Byung Doo; Choi, Gyung‐Min; Kim, Duckjool

doi:10.1007/s12206-015-0747-0

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…The aim of most of the research thus far has been to investigate the influence of altering the actual operating conditions of a furnace on its performance. Even though Sung et al (2015) simulated the effect of furnace geometry on NO x emissions, this research was predominantly carried out for ring-fired furnaces. Moreover, the authors did not focus on the effect of plan area on furnace performance for a square and rectangular furnace.…”

Section: Novelty and Implications Of The Research Outcomesmentioning

confidence: 99%

Numerical simulation of the influence of furnace geometry on its performance in a tangentially fired pulverised-coal supercritical boiler

Sankar¹,

Balasubramanian²,

Dhannina³

et al. 2022

PCFD

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The influence of furnace geometry on furnace performance was numerically investigated for a tangentially fired pulverised coal boiler. Six simulation cases were performed using commercial CFD software ANSYS FLUENT by varying the furnace plan area and geometry. The simulations revealed that, with a 20% increase in plan area, a decrease in FEGT was observed, which corresponded to a drop of approximately 30°C for the rectangular furnace and around 25°C for the square furnace over the actual values. The FEGT of the square furnace was greater by around 10°C compared to the rectangular furnace of same plan area. For a 20% increase in plan area, the total NOx generated fell by around 13% for the rectangular furnace and around 9% for the square furnace. The NOx generated was marginally greater for the rectangular furnace compared to the square furnace. It is prudent to select a rectangular furnace to reduce emissions.

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Section: Novelty and Implications Of The Research Outcomesmentioning

confidence: 99%

Numerical simulation of the influence of furnace geometry on its performance in a tangentially fired pulverised-coal supercritical boiler

Sankar¹,

Balasubramanian²,

Dhannina³

et al. 2022

PCFD

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“…On this basis, the factors that influence the NO X generation and the flow field during multi-scale fractional combustion were studied. Sung et al [13] investigated the combustion performance and NO X emissions of nontraditional ring-fired furnaces, including models with an additional inner water wall, based on a traditional 500 MW tangentially fired furnace, using commercial CFD code.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Combustion in 35 t/h Industrial Pulverized Coal Furnace with Burners Arranged on Front Wall

Han

Zhu

et al. 2020

Processes

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Coal-fired industrial boilers should operate across a wide range of loads and with a higher reduction of pollutant emission in China. In order to achieve these tasks, a physical model including two swirling burners on the front wall and boiler furnace was established for a 35 t/h pulverized coal-fired boiler. Based on Computational Fluid Dynamics (CFD) theory and the commercial software ANSYS Fluent, mathematical modeling was used to simulate the flow and combustion processes under 75% and 60% load operating conditions. The combustion characteristics in the furnace were obtained. The flue gas temperature simulation results were in good agreement with experimental data. The simulation results showed that there was a critical distance L along the direction of the furnace depth (x) and Hc along the direction of the furnace height (y) on the burner axis. When x < L, the concentration of NO decreased sharply as the height increased. When y < Hc, the NO concentration decreased sharply with an increase in the y coordinate, while increasing dramatically with an area-weighted average gas temperature increase in the swirl combustion zone. This study provides a basis for optimizing the operation of nitrogen-reducing combustion and the improvement of burner structures.

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Numerical study of an 870MW wall-fired boiler using De-NOx burners and an air staging system for low rank coal

et al. 2016

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Nitric oxide emissions and combustion performance of nontraditional ring-fired boilers with furnace geometries

Cited by 4 publications

References 39 publications

Numerical simulation of the influence of furnace geometry on its performance in a tangentially fired pulverised-coal supercritical boiler

Numerical simulation of the influence of furnace geometry on its performance in a tangentially fired pulverised-coal supercritical boiler

Numerical Simulation of Combustion in 35 t/h Industrial Pulverized Coal Furnace with Burners Arranged on Front Wall

Numerical study of an 870MW wall-fired boiler using De-NOx burners and an air staging system for low rank coal

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