Effects of CO 2 /H 2 O Addition on Soot Reactions in n-Butanol Flames

被引：0
|
作者：
Qiu L. [1 ]
Li Z. [1 ]
Liu Y. [1 ]
Qin L. [1 ]
Cheng X. [1 ]
机构：
[1] School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Cheng, Xiaobei (xbcheng@hust.edu.cn) | 2018年 / Chinese Society for Internal Combustion Engines卷 / 36期
关键词：
Coflow diffusion flame; N-butanol; Soot mass fraction; Soot number density;
D O I：
10.16236/j.cnki.nrjxb.201805058
中图分类号：
学科分类号：
摘要：
The effects of CO 2 or water vapor addition to the air stream on the soot mass fractions(SMF)and soot number densities were numerically investigated in a laminar coflow n-butanol/air diffusion flame based on a reduced nbutanol mechanism and a fixed sectional soot model. Results show that both the SMF and number densities are reduced as CO 2 or H 2 O vapor is added. Besides, the reactions and concentration distributions of species move downstream with the addition of CO 2 . The decrease of soot number density is caused by the drop of temperature and mole fraction of pyrene(A4)that leads to a decrease of inception rate. While the decrease of soot mass fraction is caused by the drop of temperature, mole fraction of H and total surface area of particles that leads to a decrease of hydrogenabstraction- carbon-addition(HACA)rate. Finally, all the particles are completely oxidized, with the major oxidizing component being OH. © 2018, Editorial Office of the Transaction of CSICE. All right reserved.
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页码：447 / 454
页数：7
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