NO<sub>x</sub> emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe

XU Yanying; ZHAI Ming; DONG Peng; ZHU Qunyi

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NO_x emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe

更新时间：2025-09-28

- NO_x emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe
- Thermal Power Generation Vol. 44, Issue 2, Pages: 18-23(2015)
- 作者机构：
  
  1. 沈阳航空航天大学安全工程学院
  2. 哈尔滨工业大学能源科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2015
- 稿件说明：
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XU Yanying, ZHAI Ming, DONG Peng, et al. NO_x emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe[J]. Thermal power generation, 2015, 44(2): 18-23.
DOI：

XU Yanying, ZHAI Ming, DONG Peng, et al. NO_x emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe[J]. Thermal power generation, 2015, 44(2): 18-23. DOI：

摘要

对弯尾管Helmholtz型无阀自激脉动燃烧器的NOx排放特性进行了实验研究。结果表明:当燃烧器结构不变时

尾管出口烟气中NOx排放量在初始阶段随热负荷的增加而增大

当热负荷增加到某一值时NOx的排放量最大

而后NOx排放量随热负荷的增加而减少;NOx排放量随过量空气系数的增加而减少;燃烧温度及烟气在高温区的停留时间对Helmhotlz型脉动燃烧器NOx排放量影响较大

一般存在一个较合理的热负荷区间

在此区间内虽然热负荷和燃烧温度较高

但由于烟气在高温区停留时间变短

NOx排放量反而较低

这一特点对Helmhotlz型脉动燃烧器运行时如何降低NOx的排放量有指导意义。

Abstract

Experimental study on NOxemission characteristics of a valveless self-excited pulse combustor of Helmholtz type with bend tailpipes was carried out.The results show that

when the combustor's structure is fixed

the NOxemission at tailpipe exit increased first and then decreased with the increasing heat load

it decreased with an increase in excess air ratio.The combustion temperature and residence time of the flue gas in high temperature area has great influence on NOxemission of the Helmhotlz pulse combustor.Generally

there is a reasonable heat load window in which the NOxemission becomes low due to short residence time of the flue gas in high temperature zone

although heat load and combustion temperature are very high.

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NOx emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe

DOI：

摘要

Abstract

关键词

Keywords

references

NO_x emission characteristics of a Helmholtz valveless self-excited pulse combustor with bend tailpipe