Pollutant emission characteristics of an ultra-low NO<sub>x</sub> gas burner coupling with staging and swirling technology

LI Wenfeng; JI Haimin; SHEN Jikang; ZHANG Zhixiang; BAI Shaolin; XU Dangqi

doi:10.19666/j.rlfd.201901008

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Pollutant emission characteristics of an ultra-low NO_x gas burner coupling with staging and swirling technology

更新时间：2025-09-28

- Pollutant emission characteristics of an ultra-low NO_x gas burner coupling with staging and swirling technology
- Thermal Power Generation Vol. 48, Issue 6, Pages: 65-70(2019)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201901008
  CLC： TK223.2
- Published Online：10 June 2019，
  
  Published：2019
- 稿件说明：
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LI Wenfeng, JI Haimin, SHEN Jikang, et al. Pollutant emission characteristics of an ultra-low NO_x gas burner coupling with staging and swirling technology[J]. Thermal power generation, 2019, 48(6): 65-70.
DOI：

LI Wenfeng, JI Haimin, SHEN Jikang, et al. Pollutant emission characteristics of an ultra-low NO_x gas burner coupling with staging and swirling technology[J]. Thermal power generation, 2019, 48(6): 65-70. DOI： 10.19666/j.rlfd.201901008.

摘要

为了推进全国各地区燃气锅炉低氮改造进程

使现有燃气锅炉氮氧化物(NO_x)排放质量浓度满足小于30 mg/m3的最新标准

本文采用分级燃烧技术耦合旋流射流混合原理设计开发了一种超低氮燃气燃烧器

并对旋流风角度、旋流板进深和烟气再循环率对NO_x排放特性的影响进行了数值模拟。同时

结合烟气再循环技术

在某燃气锅炉上进行了实炉试验

进一步分析了燃气内外层分布、过量空气系数和烟气再循环率等因素对NO_x排放特性的影响

最终确定了燃烧器的结构参数和运行参数

试验证实该燃烧器达到超低氮排放标准。

Abstract

In order to accelerate the low nitrogen oxide(NO_x) retrofitting process of gas-fired boilers

which aims to control the NO_x emission concentration of existing gas-fired boilers to meet the latest standard(below 30 mg/m3)nationwide

a new type of ultra-low NO_x gas burner was designed and developed using the principle of staged combustion technology coupled with swirling jet mixing principle. The influence of swirling air angle

swirl plate depth and flue gas recirculation ratio on NO_x emission was studied by numerical simulation. Moreover

the burner was tested on a 5 t/h gas boiler combined with flue gas recirculation technology to study the effects of fuel distribution

excess air ratio and flue gas recirculation ratio on NO_x emission concentration. The structural parameters and operating parameters of the burner were finally determined. The burner test confirmed that the ultra-low NO_x emission standard was satisfied.

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Related Institution

National Engineering Research Center for Clean Combustion of Power Plant Boiler Coal of Xi'an Thermal Engineering Research Institute Co., Ltd

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Pollutant emission characteristics of an ultra-low NOx gas burner coupling with staging and swirling technology

DOI：10.19666/j.rlfd.201901008

摘要

Abstract

关键词

Keywords

references

Pollutant emission characteristics of an ultra-low NO_x gas burner coupling with staging and swirling technology