OPTIMIZATION OF DEFLECTOR AND SPRAY AMMONIA IN SCR SYSTEM

LIANG Yuchao; HU Manyin; LI Yuan; SUN Yu; WANG Shan; TIAN Yingqing School of Environmental Science and Engineering

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OPTIMIZATION OF DEFLECTOR AND SPRAY AMMONIA IN SCR SYSTEM

Thermal Power Generation Vol. 41, Issue 9, Pages: 103-105(2012)

更新时间：2025-09-28

- OPTIMIZATION OF DEFLECTOR AND SPRAY AMMONIA IN SCR SYSTEM
- 作者机构：
  
  华北电力大学环境科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701
- Published：2012
- 稿件说明：
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LIANG Yuchao, HU Manyin, LI Yuan, et al. OPTIMIZATION OF DEFLECTOR AND SPRAY AMMONIA IN SCR SYSTEM[J]. Thermal Power Generation, 2012, 41(9): 103-105.
DOI：

LIANG Yuchao, HU Manyin, LI Yuan, et al. OPTIMIZATION OF DEFLECTOR AND SPRAY AMMONIA IN SCR SYSTEM[J]. Thermal Power Generation, 2012, 41(9): 103-105. DOI：

摘要

根据某发电机组的选择性催化还原(SCR)技术烟气脱硝系统的运行参数

对设置不同直型导流板和喷氨面的反应器流场进行模拟

得到SCR烟气脱硝系统的最佳布置方案。使用Gambit软件构造模型

利用Fluent软件进行数值计算得到流场烟气速度分布和NO质量分数分布。分析表明

设置直型导流板可使催化剂层的烟气流场速度分布更均匀;直型导流板数量一定时

增大其倾斜角度有利于改善烟气流场速度分布;角度不变增加直型导流板数量不利于烟气流场速度分布;设置6块倾斜角度为80°的直行导流板

喷氨面位于烟道中部为最佳布置。

Abstract

In order to obtain the optimum layout scheme for SCR system

flow fields of the reactor with different deflector settings and sprayed ammonia surface settings were simulated

based on the operation parameters of the flue gas denitrification system with SCR system in a generator set.The Gambit software was used to build the model

and the flow gas velocity distribution and the NO mass fraction distribution was simulated by the Fluent software.Results show that

setting straight deflector can make the flue gas velocity be well-distributed.Increasing the inclination angle of the deflector is favorable to improve the velocity distribution when the number of straight deflector is constant.However

keeping a certain angle and adding more straight deflectors goes against the flow field distribution.The best arrangement is setting six straight deflectors with the 80°inclination angle

and locating the sprayed ammonia surface at central of the flue duct.

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Related Author

CHAI Ziyi2 1.Xi’an Thermal Power Research Institute Co Ltd

SU Yan1

WANG Zhengjiang1

ZHANG Jiangtao1

WANG Jing1

MAO Jin1

ZENG Shaoliang21.College of Energy and Power Engineering

FENG Yanlin2

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