Effects of CO2 addition on the evolution of particle size distribution functions in premixed ethylene flame

被引：48
|
作者：
Tang, Quanxi [1 ,2 ,3 ]
Mei, Junyu [1 ,2 ]
You, Xiaoqing [1 ,2 ]
机构：
[1] Tsinghua Univ, Ctr Combust Energy, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China
[3] China Univ Min & Technol Beijing, Sch Resources & Safety Engn, Beijing 100083, Peoples R China
来源：
COMBUSTION AND FLAME | 2016年 / 165卷
基金：
中国国家自然科学基金;
关键词：
Soot particle size distribution functions; Premixed ethylene flames; CO2; addition; EXHAUST-GAS RECIRCULATION; SOOT SURFACE-TEMPERATURE; DIFFUSION FLAMES; CARBON-DIOXIDE; INCIPIENT SOOT; DILUENTS; OXYGEN;
D O I：
10.1016/j.combustflame.2015.12.026
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The effect of CO2 addition on sooting behavior in premixed ethylene/oxygen/argon flat flames at atmospheric pressure was investigated both experimentally and computationally. The evolution of soot particle size distribution functions (PSDFs) was examined using Burner-Stabilized Stagnation (BSS) probe/Scanning Mobility Particle Sizer (SMPS) technique. To explain the experimental observations, numerical simulations of the flames were carried out to analyze the thermal and chemical effects of CO2 addition on the precursor chemistry. The evolution of PSDFs of nascent soot showed that the CO2 addition gave rise to a decline in soot nucleation rate and a slower mass growth rate, hence significantly lowering soot yield. The inhibition of soot formation by CO2 addition is found to be mainly through chemical effect, while the thermal effect only plays a minor role. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码：424 / 432
页数：9
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