Numerical simulation on NO<sub>x</sub> formation characteristics during coalbed methane combustion and the influencing factors

Zhang Qingye; LI Jianxiong

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Numerical simulation on NO_x formation characteristics during coalbed methane combustion and the influencing factors

更新时间：2025-09-28

- Numerical simulation on NO_x formation characteristics during coalbed methane combustion and the influencing factors
- Thermal Power Generation Vol. 42, Issue 9, Pages: 59-62(2013)
- 作者机构：
  
  河南机电高等专科学校
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2013
- 稿件说明：
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Zhang Qingye, LI Jianxiong. Numerical simulation on NO_x formation characteristics during coalbed methane combustion and the influencing factors[J]. Thermal power generation, 2013, 42(9): 59-62.
DOI：

Zhang Qingye, LI Jianxiong. Numerical simulation on NO_x formation characteristics during coalbed methane combustion and the influencing factors[J]. Thermal power generation, 2013, 42(9): 59-62. DOI：

摘要

采用非预混燃烧模型对煤层气燃烧及NOx生成进行了数值模拟

研究了煤层气中甲烷浓度、过量空气系数及射流角度等因素对NO生成的影响。结果表明:随着甲烷浓度的增大

NOx生成量增大

CH4浓度从25%增大到45%时

燃烧室出口面上NO质量分数提高8倍左右;过量空气系数为1.00时

出口面上平均NO质量分数最大

过量空气系数在1.00以上增大时

生成NOx量降低;射流角度变化对燃烧温度及NOx生成的影响较小。

Abstract

On the basis of non-premixed combustion model

the combustion process and NOx formation characteristics of coalbed methane were numerically simulated

to investigate the effect of factors like the methane concentration

the excess air ratio and the jetting angle on NOxformation.The results showed that

when the methane concentration increased from 25%to 45%

the mass fraction of NO at outlet surface of the combustion chamber increased by above 8times

it showed a peak when the excess air ratio was 1.00and decreased when the excess air ratio was larger than 1.00.The change of jetting angle had little influence on the combustion temperature and NOx formation.

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Numerical simulation on NOx formation characteristics during coalbed methane combustion and the influencing factors

DOI：

摘要

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Keywords

references

Numerical simulation on NO_x formation characteristics during coalbed methane combustion and the influencing factors