Optimization adjustment research on SNCR based on combustion temperature distribution measurement

ZHANG Xiangyu; QIAO Haiyong; ZHOU Huaichun; XU Hongjie

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Optimization adjustment research on SNCR based on combustion temperature distribution measurement

更新时间：2025-09-28

- Optimization adjustment research on SNCR based on combustion temperature distribution measurement
- Thermal Power Generation Vol. 43, Issue 11, Pages: 92-96(2014)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能沁北发电有限责任公司
  3. 清华大学热能动力仿真与控制研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2014
- 稿件说明：
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ZHANG Xiangyu, QIAO Haiyong, ZHOU Huaichun, et al. Optimization adjustment research on SNCR based on combustion temperature distribution measurement[J]. Thermal power generation, 2014, 43(11): 92-96.
DOI：

ZHANG Xiangyu, QIAO Haiyong, ZHOU Huaichun, et al. Optimization adjustment research on SNCR based on combustion temperature distribution measurement[J]. Thermal power generation, 2014, 43(11): 92-96. DOI：

摘要

为解决煤质多变和频繁调峰运行引起的选择性非催化还原(SNCR)反应区温度窗口偏移的问题

结合燃烧温度场测量技术对SNCR脱硝工艺进行优化调整研究。以某台670t/h燃煤锅炉为试验对象

利用辐射图像处理方法在线监测全炉膛燃烧温度场分布

选择SNCR反应区温度窗口

指导调整喷口投运位置及尿素溶液流量分配

并采用CFD软件对优化调整后SNCR系统的脱硝效果进行了模拟计算。结果表明

结合温度场实时监测技术优化调整后的SNCR系统能够显著提高脱硝效率

并改善炉膛出口NOx分布的均匀性。

Abstract

In order to solve the temperature window migration problem of SNCR reaction region caused by coal type variation and frequent peak operation

the combustion temperature field measurement method was adopted to carry out optimization adjustment for the SNCR system.Taking a 670t/h coal-fired boiler as the research object

the furnace temperature field was monitored online by radiation image processing technology to select the temperature window of SNCR reaction zone and guide the optimization adjustment of spout location and flow rate allocation.At last

via CFD software

the denitrification efficiency of the SNCR system was simulated.The results show that

using the temperature filed online monitoring technology to optimize the SNCR system can enhance the denitration efficiency dramatically

which also can improve the NOxdistribution at the furnace outlet.

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