Numerical analysis on denitration scheme in flue duct of a waste heat boiler

TIAN Mingquan; ZHANG Yong; LI Na; ZHOU Qulan; SHEN Jizhao

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Numerical analysis on denitration scheme in flue duct of a waste heat boiler

更新时间：2025-09-28

- Numerical analysis on denitration scheme in flue duct of a waste heat boiler
- Thermal Power Generation Vol. 42, Issue 10, Pages: 32-38(2013)
- 作者机构：
  
  1. 新疆泽普石油基地塔西南电力工程部
  2. 西安交通大学动力工程多相流国家重点实验室
  3. 江苏扬州晨光特种设备有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701
- Published：2013
- 稿件说明：
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TIAN Mingquan, ZHANG Yong, LI Na, et al. Numerical analysis on denitration scheme in flue duct of a waste heat boiler[J]. Thermal power generation, 2013, 42(10): 32-38.
DOI：

TIAN Mingquan, ZHANG Yong, LI Na, et al. Numerical analysis on denitration scheme in flue duct of a waste heat boiler[J]. Thermal power generation, 2013, 42(10): 32-38. DOI：

摘要

采用数值模拟法对塔西南电力工程部余热锅炉NOx排放超标问题进行研究

对比在其尾部烟道实施SCR和SNCR 2种脱硝方法的温度场和速度场以及最终脱硝效果。结果表明:由于余热锅炉补燃器的结构局限导致温度分布不均

SNCR反应仅局限于部分区域

故NOx整体脱除效果较差;采用SCR技术时

烟气经余热锅炉补燃后温度分布在适合SCR反应的温度区间内

NOx整体脱除效果较好

因此宜采用SCR技术脱硝方案。

Abstract

NOx emission in waste heat boiler of the Southeast Electric Power Engineering Department of Xinjiang Zepu Petroleum Base Tower exceeded the standard demand.The numerical simulation method was applied to compare the temperature field

velocity field and final effect of two denitrification methods(SCR method and SNCR method).The results showed that

due to the uneven temperature distribution resulted from the structural limitation of the waste heat boiler

the applicable temperature for SNCR reaction was limited in part areas

so the overall NOx removal was less effective.While the temperature distribution was suitable for the SCR reaction after the boiler additional combustion

and the overall NOx removal was more effective.

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