|Table of Contents|

The Effect of CO2 as an Additive in a Methane/Air Diffusion Flame on NO Formation(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2012年02期
Page:
50-52
Research Field:
Publishing date:

Info

Title:
The Effect of CO2 as an Additive in a Methane/Air Diffusion Flame on NO Formation
Author(s):
Zhang YueGu Zhongzhu
School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China
Keywords:
NOdiluents laminar diffusion flame
PACS:
TK16
DOI:
-
Abstract:
Taking the simple-structured coflow laminar diffusion flame as the object of study,the paper investigated the effect of CO2 as an additive in a CH4 /air flame on NO formation by experiment and numerical simulation. The result shows that CO2 addition to fuel side can reduce NO emission index effectively. The dilution,thermal and chemical effects of CO2 addition to fuel side can decrease the flame temperature,the maximum concentrations of O atom,H atom, OH radical and CH radical,which leads to the suppression of prompt NO.

References:

[1]Liu F,Guo H,Smallwood G J,et al. The chemical effects of carbon dioxide as an additive in an ethylene diffusion flame: implications for soot and NOx formation[J]. Combustion and Flame,2001,125: 778-787.
[2]Jeong Park,Seung-Gon Kim,Kee-Man Lee,et al. Chemical effect of diluents on flame structure and NO emission characteristic in methane /air counterflow diffusion flame[J]. Int J Energy Res,2002,26: 1141-1160.
[3]杨浩林,赵黛青,鲁冠军. CO2 稀释燃料对富氧扩散燃烧中NOx 生成的抑制作用[J]. 热能动力工程,2006,21( 1) : 43-47. Yang Haolin,Zhao Daiqing,Lu Guanjun. The role played by CO2 diluted fuel in suppressing NOx formation during an oxygenenriched diffusion combustion process[J]. Journal of Engineering for Thermal Energy and Power,2006,21( 1) : 43-47. ( in Chinese)
[4]Guo H,Liu F,Smallwood G J,et al. Numerical study on the influence of hydrogen addition on soot formation in a laminar ethylene /air diffusion flame[J]. Combustion and Flame,2006,145: 324-338.
[5]Liu Z,Liao C,Liu C,et al. Implicit multigrid method for modeling 3D turbulent diffusion flames with detailed chemistry [C]/ / Reno: 33rd Aerospace Science Meeting and Exhibit,1995.
[6]Smith G P,Golden G M,Frenklach M,et al. http: / /www. me. berkeley. edu /gri-mech,1995.
[7]Kee R J,Rupley F M,Miller J A. CHEMKIN-Ⅱ: a fortran chemical package for the analysis of gas-phase chemical kinetics [C]/ / Albuquerque: Sandia Report No SAND89-8009,Sandia National Laboratories,1989.
[8]Guo H,Neill S W,Smallwood G J. A numerical investigation of NOx formation in counterflow CH4 /H2 /Air diffusion flames [C]/ / Chicago: International Mechanical Engineering Congress and Exposition,2006.
[9]Guo H,Liu F,Smallwood G J,et al. Effects of radiation model on the modeling of a laminar coflow methane /air diffusion flame[J]. Combustion and Flame,2004,138: 136-154.

Memo

Memo:
-
Last Update: 2013-03-11