Chemical Effects of CO2 Concentration on Flame Structure and Soot Precursors in Rich Ethylene Oxidation

被引：5

作者：

Zhang, Yindi ^{[1
,2
]}

Lou, Chun ^{[2
]}

Li, Yong ^{[3
]}

机构：

[1] Yangtze Univ Res, Key Lab Oil Gas Prod, China Natl Petr Corp, Wuhan 430100, Hubei Province, Peoples R China

[2] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Hubei Province, Peoples R China

[3] China Natl Petr Corp, Gas Lift Technol Ctr Tuha Oilfield, Hami 838202, Xinjiang Provin, Peoples R China

来源：

ASIAN JOURNAL OF CHEMISTRY | 2013年 / 25卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Fuel enrichment; Carbon dioxide; Kinetics modeling; Flame structure; Soot precursors; COMBUSTION; KINETICS; PRESSURE; METHANE;

D O I：

10.14233/ajchem.2013.15777

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Flame structure and soot precursors were investigated numerically with CO2 addition in fuel enrichment laminar premixed C2H4/O-2/Ar flames (C/O ratio of Phi = 2.5) at low pressure (0.05 atm). An updated mechanism emphasizes the effect of presence of an O-2/CO2 atmosphere instead of an O-2/Ar one in premixed flame. The addition of CO2 in the fresh gas inlet causes a shift downstream of the flame front and thus flame inhibition. The partial replacement of Ar by CO2 leads to an increase of burnt gas quantities of H2O, CO and CO2 and leads to a decrease of the maximum mole fractions of some C-2 to C-10 hydrocarbon intermediates (C2H2, C3H3, C6H6, C6H6O, C8H8 and C10H8). The sensitivity analysis and reaction-path analysis show that C2H4 reaction path and products are altered due to the CO2 addition.

引用

页码：8810 / 8816

页数：7

共 26 条

[1] High pressure studies of moist carbon monoxide nitrous oxide kinetics
Allen, MT
Yetter, RA
Dryer, FL
[J]. COMBUSTION AND FLAME, 1997, 109 (03) : 449 - 470
[2] Evaluated kinetic data for combustion modeling: Supplement II
Baulch, DL
Bowman, CT
Cobos, CJ
Cox, RA
Just, T
Kerr, JA
Pilling, MJ
Stocker, D
Troe, J
Tsang, W
Walker, RW
Warnatz, J
[J]. JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 2005, 34 (03) : 757 - 1397
[3] CO2 addition and pressure effects on laminar and turbulent lean premixed CH4 air flames
Cohe, Cecile
Chauveau, Christian
Goekalp, Iskender
Kurtulus, Dilek Funda
[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2009, 32 : 1803 - 1810
[4] Frenklach M., 1994, Detailed mechanism and modeling of soot particle formation, P165
[5] KINETIC MODELING AND SENSITIVITY ANALYSIS OF NITROGEN-OXIDE FORMATION IN WELL-STIRRED REACTORS
GLARBORG, P
MILLER, JA
KEE, RJ
[J]. COMBUSTION AND FLAME, 1986, 65 (02) : 177 - 202
[6] DETAILED MODELING OF SOOT FORMATION IN LAMINAR PREMIXED ETHYLENE FLAMES AT A PRESSURE OF 10 BAR
KAZAKOV, A
WANG, H
FRENKLACH, M
[J]. COMBUSTION AND FLAME, 1995, 100 (1-2) : 111 - 120
[7] Kee R.J., 1986, COMPUTER CODE PACKAG
[8] KINETICS OF THE REACTIONS OF CH2(A1A1) WITH CH3C2H, HCN, CO2, N2O AND COS
KOCH, M
TEMPS, F
WAGENER, R
WAGNER, HG
[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1990, 94 (06): : 645 - 650
[9] RATE CONSTANTS OF COMBINATION OF METHYL RADICALS WITH NITRIC-OXIDE AND OXYGEN
LAUFER, AH
BASS, AM
[J]. INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1975, 7 (05) : 639 - 648
[10] The chemical effects of carbon dioxide as an additive in an ethylene diffusion flame:: Implications for soot and NOx formation
Liu, FS
Guo, HS
Smallwood, GJ
Gülder, ÖL
[J]. COMBUSTION AND FLAME, 2001, 125 (1-2) : 778 - 787

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