Numerical study on combustion characteristics of natural gas mixed with carbon dioxide at high pressures

FU Zhongguang; LI Qiang; LI Xiaofei; WANG Xiaonan; LU Ke

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Numerical study on combustion characteristics of natural gas mixed with carbon dioxide at high pressures

Thermal Power Generation Issue 3, (2017)

更新时间：2025-09-28

- Numerical study on combustion characteristics of natural gas mixed with carbon dioxide at high pressures
- 作者机构：
  
  华北电力大学国家火力发电工程技术研究中心,北京,102206
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published Online：27 March 2017，
  
  Published：2017
- 稿件说明：
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FU Zhongguang, LI Qiang, LI Xiaofei, et al. Numerical study on combustion characteristics of natural gas mixed with carbon dioxide at high pressures[J]. Thermal Power Generation, 2017, (3).
DOI：

FU Zhongguang, LI Qiang, LI Xiaofei, et al. Numerical study on combustion characteristics of natural gas mixed with carbon dioxide at high pressures[J]. Thermal Power Generation, 2017, (3). DOI：

摘要

针对气体燃料掺混惰性气体燃烧研究的热点问题

本文采用流体力学 Fluent计算软件，对天然气掺混 CO2高压燃烧的特性进行了数值研究。分别在 0.1、1.0、2.0、4.0 MPa压力下，以 0.0、0.2、0.4、0.6共 4种掺混率的天然气与 CO2混合物进行高压燃烧，对燃烧后的温度场高温区域和污染物 NOx的排放规律进行数值模拟。结果表明：在相同压力下，天然气掺混 CO2燃烧 1 500 K高温区段长度随掺混率的增加逐渐减小；在相同 CO2掺混率下， 1 500 K高温区段长度和最大宽度随着压力的升高而增大；在相同掺混率下，燃烧产生的 NOx量随着压力的增大而增大；相同压力下，燃烧产生的 NOx量随着掺混率的增大先减小后增大，且压力越大产生 NOx量的变化幅度也越大。

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