Numerical simulation on single channel catalyst in selective catalytic reduction system

ZHAO Dazhou; HE Sheng; SI Fengqi; XU Zhigao

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Numerical simulation on single channel catalyst in selective catalytic reduction system

Thermal Power Generation Issue 3, (2016)

更新时间：2025-09-28

- Numerical simulation on single channel catalyst in selective catalytic reduction system
- 作者机构：
  
  1. 华电电力科学研究院,浙江,杭州,310000
  2. 东南大学能源与环境学院,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published Online：15 April 2016，
  
  Published：2016
- 稿件说明：
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ZHAO Dazhou, HE Sheng, SI Fengqi, et al. Numerical simulation on single channel catalyst in selective catalytic reduction system[J]. Thermal Power Generation, 2016, (3).
DOI：

ZHAO Dazhou, HE Sheng, SI Fengqi, et al. Numerical simulation on single channel catalyst in selective catalytic reduction system[J]. Thermal Power Generation, 2016, (3). DOI：

摘要

考虑内外扩散以及副反应的影响

采用Fluent软件

建立了选择性催化还原(SCR)脱硝反应单孔催化剂三维模型，并以E-R反应动力学为基础

研究了运行参数和催化剂壁厚对脱硝效率和SO2转化率的影响。结果表明:SCR脱硝反应工作温度区间较宽，为553~653 K；当温度超过653 K

由于副反应的加剧

脱硝效率显著下降；在催化剂中沿烟气流向温度略有升高

但放热现象不明显；随着氨氮摩尔比的升高

脱硝效率逐渐升高

SO2的转化率降低

氨逃逸增加；随着空速的增加

脱硝效率和SO2的转化率均降低；SO2转化率随催化剂壁厚的增加而线性增加

但由于内扩散的限制

脱硝效率随催化剂壁厚的增大而显著降低。

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Related Author

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