Numerical study on combustion characteristics of a tangentially fired pulverized-coal boiler in O2/CO2 atmosphere

JI Haimin; XU Dangqi; LI Hongzhi; ZHAO Zhiping; XUE Ning; ZHOU Fei; NIE Jianping

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Numerical study on combustion characteristics of a tangentially fired pulverized-coal boiler in O2/CO2 atmosphere

Thermal Power Generation Issue 9, (2016)

更新时间：2025-09-28

- Numerical study on combustion characteristics of a tangentially fired pulverized-coal boiler in O2/CO2 atmosphere
- 作者机构：
  
  西安热工研究院有限公司,陕西,西安,710032
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published Online：25 September 2016，
  
  Published：2016
- 稿件说明：
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JI Haimin, XU Dangqi, LI Hongzhi, et al. Numerical study on combustion characteristics of a tangentially fired pulverized-coal boiler in O2/CO2 atmosphere[J]. Thermal Power Generation, 2016, (9).
DOI：

JI Haimin, XU Dangqi, LI Hongzhi, et al. Numerical study on combustion characteristics of a tangentially fired pulverized-coal boiler in O2/CO2 atmosphere[J]. Thermal Power Generation, 2016, (9). DOI：

摘要

利用Fluent软件对330 MW机组四角切圆煤粉锅炉常规燃烧和富氧燃烧进行了数值模拟研究

对比分析了不同工况下炉膛中心温度、辐射力、O2分布、CO浓度、NOx浓度之间的差异。结果表明:在富氧燃烧时

当O2体积分数为21％时

炉内的燃烧温度总体要低于常规空气气氛下的燃烧温度

即辐射力低于常规空气气氛

燃烧排放的CO2浓度远远高于常规燃烧

NOx生成量较常规燃烧也有一定程度降低；在富氧条件下

随着φ(O2)/φ(CO2)增加

炉内煤粉燃烧得到强化

燃烧速度加快

中心温度提高

辐射强度增大

NOx生成量增多

烟气中CO2浓度就越大

越易于收集利用。

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