Experimental study on SNCR process of the effect of CO additive on denitration performance

WANG Linwei; DUAN Yufeng; YAO Ting; ZHOU Qiang; ZHAO Shilin; CHEN Mingming; YANG Zhizhong; LI Yuan

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Experimental study on SNCR process of the effect of CO additive on denitration performance

Thermal Power Generation Issue 4, (2016)

更新时间：2025-09-28

- Experimental study on SNCR process of the effect of CO additive on denitration performance
- 作者机构：
  
  1. 东南大学能源热转换及其过程测控教育部重点实验室,江苏,南京,210096
  2. 东方电气集团东方锅炉股份有限公司,四川,成都,611731
- 作者简介：
- 基金信息：
- DOI：
  CLC： X51
- Published Online：15 May 2016，
  
  Published：2016
- 稿件说明：
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WANG Linwei, DUAN Yufeng, YAO Ting, et al. Experimental study on SNCR process of the effect of CO additive on denitration performance[J]. Thermal Power Generation, 2016, (4).
DOI：

WANG Linwei, DUAN Yufeng, YAO Ting, et al. Experimental study on SNCR process of the effect of CO additive on denitration performance[J]. Thermal Power Generation, 2016, (4). DOI：

摘要

在管式炉上模拟烟气气氛下实验研究了650～950 ℃范围内选择性非催化还原(SNCR)技术的脱硝特性及添加CO对其脱硝特性的影响

分析了相关反应机理。结果表明:不添加CO时

SNCR最佳脱硝温度为900 ℃；反应器尾部N2O和NO2排放质量浓度均随反应温度的增加

先增大后减小

在850 ℃时N2O和NO2排放质量浓度达到峰值

高温可降低氨逃逸量；反应温度低于700 ℃

增大氨氮摩尔比对脱硝效率、N2O与NO2排放质量浓度没有影响

而氨逃逸显著增大；反应温度高于800 ℃

增大氨氮摩尔比

脱硝效率与N2O排放质量浓度均增大

而NO2排放质量浓度减小。添加微量CO时

最佳脱硝效率略有增大

最佳脱硝温度、脱硝温度窗口及氨逃逸曲线向低温移动

脱硝温度窗口的下限降低至750 ℃；N2O排放温度范围变宽且峰值增大

NO2排放质量浓度接近于零。增加CO添加量易引起低温下反应器尾部CO逃逸量的增大

应尽量减少CO的添加量。实际应用中

可通过加入微量的CO降低SNCR脱硝温度

减少NO2排放质量浓度及低温时的氨逃逸量等。

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