EN基于解耦方法探究N2、CO2对生物质气层流燃烧速度的影响
Investigation of N2 and CO2 Effects on Laminar Burning Velocity of Biomass Gas Based on Decoupling Method
- 动力工程学报 2025年45卷第11期 页码：1864-1871
- 作者机构：
1. 上海科技大学 物质科学与技术学院,上海,201210
2. 中国科学院上海高等研究院 先进能源系统与装备研究与发展中心,上海,201210
3. 中国科学院大学 化学工程学院,北京,101408
- 作者简介：
- 基金信息：中国科学院青年培育基金资助项目(E3241K1211)
DOI：10.19805/j.cnki.jcspe.2025.240579
中图分类号：-
网络出版：2025-11-17，
纸质出版：2025-11-17
- 稿件说明：
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刘政,高闯,黄伟光. 基于解耦方法探究N2、CO2对生物质气层流燃烧速度的影响动力工程学报, 2025, 45(11): 1864-1871 https://doi.
org/10.19805/j.cnki.jcspe.2025.240579
刘政,高闯,黄伟光. 基于解耦方法探究N2、CO2对生物质气层流燃烧速度的影响动力工程学报, 2025, 45(11): 1864-1871 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240579.
org/10.19805/j.cnki.jcspe.2025.240579 DOI：
摘要
稀释燃烧可以实现高效低污染燃烧
从化学反应动力学的角度探究N
2
和CO
2
稀释气体对生物质气层流燃烧速度的影响。通过调整反应机理
设定虚拟稀释气体N
2
、CO
2
向一定成分的CH
4
/CO/H
2
混合气分别添加体积分数为0%~60%的2种稀释气体或其虚拟气体
基于此
对影响其层流燃烧速度的各效应(稀释效应、热效应、直接反应效应、三体反应效应)进行解耦
分析了预热温度、压强、当量比对各效应占比变化的影响。同时
探究了活性自由基(H/OH)最大浓度与层流燃烧速度的关系
结果表明二者成正比关系
并且较高当量比时拟合效果最好
而温度和压力对其拟合效果的影响较小。
Abstract
Dilution combustion enables high efficiency combustion with low pollution. The effects of N
2
and CO
2
as diluents on the laminar burning velocity (LBV) of biomass-derived CH
4
/CO/H
2
syngas were explored from a chemical-kinetic perspective. The reaction mechanism of syngas combustion was modified to set up virtual N
2
and CO
2
diluents
allowing the individual effects on the LBV
namely
the dilution
thermal
direct reaction and three-body reaction effects
to be decoupled. The variation of contributions from the four effects with pre-heat temperature
pressure and equivalence ratio were analyzed from numerical simulations
with each real or virtual diluents added at 0%-60% (volume fraction) to the mixture. In addition
the relationship between the peak concentrations of active radicals (H/OH) and the LBV was examined. A linear correlation is observed with the best fit obtained at higher equivalence ratios
whereas temperature and pressure exert only minor influence on the fit quality.
关键词
Keywords
references
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