Numerical simulation and experimental research on new-style low NO<sub>x</sub> gas burner

JI Haimin; LI Hongzhi; ZHAO Zhiping; MENG Pengfei; YAO Mingyu; NIE Jianping

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Numerical simulation and experimental research on new-style low NO_x gas burner

Thermal Power Generation Vol. 44, Issue 12, Pages: 107-112(2015)

更新时间：2025-09-28

- Numerical simulation and experimental research on new-style low NO_x gas burner
- 作者机构：
  
  西安热工研究院有限公司电站锅炉煤清洁燃烧国家工程研究中心
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2015
- 稿件说明：
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JI Haimin, LI Hongzhi, ZHAO Zhiping, et al. Numerical simulation and experimental research on new-style low NO_x gas burner[J]. Thermal Power Generation, 2015, 44(12): 107-112.
DOI：

JI Haimin, LI Hongzhi, ZHAO Zhiping, et al. Numerical simulation and experimental research on new-style low NO_x gas burner[J]. Thermal Power Generation, 2015, 44(12): 107-112. DOI：

摘要

为了降低气体燃烧过程中产生的氮氧化物(NOx)含量

设计了适用于燃气燃烧过程的新型低NOx燃烧器。采用燃料与助燃空气特殊分级及亚音速超混合等技术

形成内外燃料旋流对冲效果

使燃料与助燃空气在炉内混合更均匀

以降低燃烧过程中产生的局部高温和NOx排放。借助CFD软件模拟了燃烧过程炉内温度及NOx生成量分布

并在120t/h燃气锅炉上进行了低NOx燃气燃烧器改造。分别通过模拟与试验对比了改造前、后炉内温度场和NOx排放质量浓度

验证了新型低NOx燃气燃烧器可以降低燃烧产生的局部高温和NOx排放质量浓度

可为燃气锅炉低氮改造提供借鉴。

Abstract

In order to reduce nitrogen oxides(NOx)produced from gas combustion

a new low-NOxburner for gas combustion process was designed.This burner applies the special staged combustion technology of fuel and combustion gas as well as the subsonic mixing technology and others to form an opposed firing effect by internal and external layer of fuel.Thus

the fuel and the combustion air can be mixed more evenly in the furnace so as to reduce the local high temperature and NOxformation.Moreover

by using the CFD software

this paper simulated the temperature field and NOxformation inside the furnace

and carried out low NOx gas burner retrofit on a 120t/h boiler.The temperature field and NOxemission concentration before and after the retrofitting were compared numerically and experimentally.The results verified this novel low NOx gas burner can reduce the local high temperature and NOxformation during combustion

which can provide references for low NOxcombustion retrofit for gas boilers.

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Related Author

LI Wenfeng

JI Haimin

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BAI Shaolin

XU Dangqi

LIU Hong-gang

BAI Shao-lin (Xi’an Thermal Power Research Institute Co Ltd

Related Institution

Xi'an Thermal Power Research Institute Co., Ltd

Zhejiang Electric Power Test and Research Institute

Key Laboratory of Thermal Science and Power Engineering, Ministry of Education, Tsinghua University

Department of Power Engineering, North China Electric Power University

Power Department of Baoding Electric Power Vocational and Technical College

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Numerical simulation and experimental research on new-style low NOx gas burner

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摘要

Abstract

关键词

Keywords

references

Numerical simulation and experimental research on new-style low NO_x gas burner