Effect of Two-level Over-fire Air on the Combustion and NOx Emission Characteristics in a 600 MW Wall Fired Boiler
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Effect of Two-level Over-fire Air on the Combustion and NOx Emission Characteristics in a 600 MW Wall Fired Boiler
- 发表刊物：
- Numerical Heat Transfer, Part A: Applications
- 摘要：
- This paper accomplishes a numerical investigation on the effect of two-level over-fire air
(OFA) on the combustion and NOx emission in a supercritical 600MW wall-fired boiler.
Different arrangements of two-level OFA nozzles and different airflow ratios between the
two layers are set to examine NOx emission and the carbon content in fly ash. According
to the simulation results, the two-level OFA case releases the NOx between the single upper
layer and the single lower layer of the two-level OFA nozzles in operation. Moreover, the
two-level OFA arrangement gives a lower carbon content in fly ash than the single-level
OFA cases. In addition, both low NOx emissions and low carbon content in fly ash can be
obtained simultaneously when the two levels of OFAs are injected from Layers 1 and 4 with
rlower at 0.5.
- 合写作者：
- Hu Liu, Lei Zhang, Hua Zhu, Li Nie, Defu Che
- 是否译文：
- 否
- 发表时间：
- 2014-12-26
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