NO<sub>x</sub> emissions of coal combustion in O<sub>2</sub>/CO<sub>2</sub>

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NO_x emissions of coal combustion in O₂/CO₂

更新时间：2025-12-10

- NO_x emissions of coal combustion in O₂/CO₂
- CIESC Journal Issue 12, Pages: 2410-2414(2005)
- 作者机构：
  
  浙江大学热能工程研究所，能源洁净利用与环境工程教育部重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 2005，
  
  Published：25 December 2005
- 稿件说明：
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MENG Derun, ZHAO Xiang, ZHOU Junhu, et al. NO_x emissions of coal combustion in O₂/CO₂[J]. CIESC Journal, 2005, (12): 2410-2414.
DOI：

MENG Derun, ZHAO Xiang, ZHOU Junhu, et al. NO_x emissions of coal combustion in O₂/CO₂[J]. CIESC Journal, 2005, (12): 2410-2414. DOI：

摘要

利用一维沉降炉，对3种煤在O2/CO2和空气两种气氛下燃烧NOx析出特性进行了比较，分析了炉膛温度、过量空气系数对NOx生成量的影响，并对O2/CO2气氛下NOx的生成和破坏机理进行了分析.研究发现两种气氛下NOx都有一个峰值出现，挥发分含量高的煤种峰值靠前

挥发分含量低的煤种峰值靠后，O2/CO2条件下，峰值出现较空气条件下提前且有所下降;空气条件下NOx的生成量随温度提高较快地增加，而O2/CO2气氛中NOx的生成量随温度变化比较缓慢;在两种气氛下NOx的峰值均随过量空气系数的增加而增加，高挥发分煤在O2/CO2气氛下NOx峰值低于空气条件下峰值，而低挥发分煤则受影响较小.

Abstract

The emission of NOx when coal was burning in O2/CO2 was compared with the case of burning in air

and the effects of temperature and excess air ratio on NOx formation were analyzed by using a one-dimensional drop-tube furnace. The formation and reduction mechanisms of NOx in O2/CO2 were studied.There was a NOx peak in both two atmospheres

and the peak of high volatile matter coal appeared much earlier than the peak of low volatile matter coal.The peak in O2/CO2 atmosphere appeared earlier than the peak in air and the peak value was lower than that in air.The amount of NOx increased quickly with temperature in air

but the amount of NOx changed slowly with temperature in O2/CO2 atmosphere.In both atmospheres the NOx peak value increased with excess air ratio.The peak value of high volatile matter coal in O2/CO2 was lower than that in air but the low volatile matter coal was less affected.

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