Full Text:   <2199>

CLC number: TK124; O614.3

On-line Access: 

Received: 2008-04-21

Revision Accepted: 2008-06-20

Crosschecked: 0000-00-00

Cited: 9

Clicked: 3707

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.11 P.1582~1589


Emission characteristics and combustion instabilities in an oxy-fuel swirl-stabilized combustor

Author(s):  Guo-neng LI, Hao ZHOU, Ke-fa CEN

Affiliation(s):  State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zhouhao@cmee.zju.edu.cn

Key Words:  Swirl, Oxy-fuel, Combustion instability, Pollutant emissions

Guo-neng LI, Hao ZHOU, Ke-fa CEN. Emission characteristics and combustion instabilities in an oxy-fuel swirl-stabilized combustor[J]. Journal of Zhejiang University Science A, 2008, 9(11): 1582~1589.

@article{title="Emission characteristics and combustion instabilities in an oxy-fuel swirl-stabilized combustor",
author="Guo-neng LI, Hao ZHOU, Ke-fa CEN",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Emission characteristics and combustion instabilities in an oxy-fuel swirl-stabilized combustor
%A Guo-neng LI
%A Ke-fa CEN
%J Journal of Zhejiang University SCIENCE A
%V 9
%N 11
%P 1582~1589
%@ 1673-565X
%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820303

T1 - Emission characteristics and combustion instabilities in an oxy-fuel swirl-stabilized combustor
A1 - Guo-neng LI
A1 - Hao ZHOU
A1 - Ke-fa CEN
J0 - Journal of Zhejiang University Science A
VL - 9
IS - 11
SP - 1582
EP - 1589
%@ 1673-565X
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820303

This paper presents an experimental study on the emission characteristics and combustion instabilities of oxy-fuel combustions in a swirl-stabilized combustor. Different oxygen concentrations (Xoxy=25%~45%, where Xoxy is oxygen concentration by volume), equivalence ratios (φ=0.75~1.15) and combustion powers (CP=1.08~2.02 kW) were investigated in the oxy-fuel (CH4/CO2/O2) combustions, and reference cases (Xoxy=25%~35%, CH4/N2/O2 flames) were covered. The results show that the oxygen concentration in the oxidant stream significantly affects the combustion delay in the oxy-fuel flames, and the equivalence ratio has a slight effect, whereas the combustion power shows no impact. The temperature levels of the oxy-fuel flames inside the combustion chamber are much higher (up to 38.7%) than those of the reference cases. Carbon monoxide was vastly produced when Xoxy>35% or φ>0.95 in the oxy-fuel flames, while no nitric oxide was found in the exhaust gases because no N2 participates in the combustion process. The combustion instability of the oxy-fuel combustion is very different from those of the reference cases with similar oxygen content. oxy-fuel combustions excite strong oscillations in all cases studied Xoxy=25%~45%. However, no pressure fluctuations were detected in the reference cases when Xoxy>28.6% accomplished by heavily sooting flames which were not found in the oxy-fuel combustions. Spectrum analysis shows that the frequency of dynamic pressure oscillations exhibits randomness in the range of 50~250 Hz, therefore resulting in a very small resultant amplitude. Temporal oscillations are very strong with amplitudes larger than 200 Pa, even short time fast Fourier transform (FFT) analysis (0.08 s) shows that the pressure amplitude can be larger than 40 Pa.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1] Andersson, K., Johnsson, F., 2007. Flame and radiation characteristics of gas-fired O2/CO2 combustion. Fuel, 86(5-6):656-668.

[2] Bolland, O., Mathieu, P., 1998. Comparison of two CO2 removal options in combined cycle power plants. Energy Conversion and Management, 39(16-18):1653-1663.

[3] Boushaki, T., Sautet, J.C., Salentey, L., Labegorre, B., 2007. The behavior of lifted oxy-fuel flames in burners with separated jets. International Communications in Heat and Mass Transfer, 34(1):8-18.

[4] Brookes, S.J., Moss, J.B., 1999. Measurements of soot production and thermal radiation from confined turbulent jet diffusion flames of methane. Combustion and Flame, 116(1-2):49-61.

[5] Ditaranto, M., Hals, J., 2006. Combustion instabilities in sudden expansion oxy-fuel flames. Combustion and Flame, 146(3):493-512.

[6] Dowling, A.P., 2000. The Challenges of Lean Premixed Combustion. Proceeding of the International Gas Turbine Congress, Tokyo.

[7] Giezendanner, R., Weigand, P., Duan, X.R., Meier, W., Meier, U., Aigner, M., Lehmann, B., 2005. Laser-based investigations of periodic combustion instabilities in a gas turbine model combustor. Journal of Engineering for Gas Turbines and Power, 127(3):492-496.

[8] Hobson, D.E., Fackrell, J.E., Hewitt, G., 2000. Combustion instabilities in industrial gas turbines-measurements on operating plant and thermoacoustic modeling. Journal of Engineering for Gas Turbines and Power, 122(3):420-428.

[9] Johnson, M.R., Littlejohn, D., Nazeer, W.A., Smith, K.O., Cheng, R.K., 2005. A comparison of the flowfields and emissions of high-swirl injectors and low-swirl injectors for lean premixed gas turbines. Proceedings of the Combustion Institute, 30(2):2867-2874.

[10] Keller, J.J., 1995. Thermoacoustic oscillations in combustion chambers of gas turbines. AIAA Journal, 33(12):2280-2287.

[11] Kim, H.K., Kim, Y., Lee, S.M., Ahn, K.Y., 2006. Emission characteristics of the 0.03 MW oxy-fuel combustor. Energy & Fuel, 20(5):2125-2130.

[12] Kim, H.K., Kim, Y., Lee, S.M., Ahn, K.Y., 2007a. Studies on combustion characteristics and flame length of turbulent oxy-fuel flames. Energy & Fuel, 21(3):1459-1467.

[13] Kim, H.K., Kim, Y., Lee, S.M., Ahn, K.Y., 2007b. NO reduction in 0.03-0.2 MW oxy-fuel combustor using flue gas recirculation technology. Proceedings of the Combustion Institute, 31(2):3377-3384.

[14] Li, G.N., Zhou, H., Cen, K.F., 2007. Experimental Study of Thermoacoustic Instability under Different Swirl Intensities. Challenges Power Engineering and Environment, Zhejiang University Press & Springer, Hangzhou, p.670-676.

[15] Li, H., Zhou, X., Jeffries, J.B., Hanson, R.K., 2007. Sensing and control of combustion instabilities in swirl-stabilized combustors using Diode-laser absorption. AIAA Journal, 45(2):390-398.

[16] Lyngfelt, A., Leckner, B., Mattisson, T., 2001. A fluidized-bed combustion process with inherent CO2 separation: application of chemical-looping combustion. Chemical Engineering Science, 56(10):3101-3113.

[17] Masri, A.R., Kalt, P.A., Barlow, R.S., 2004. The compositional structure of swirl-stabilized turbulent nonpremixed flames. Combustion and Flame, 137(1-2):1-37.

[18] Meier, W., Weigand, P., Duan, X.R., Giezendanner-Thoben, R., 2007. Detailed characterization of the dynamics of thermoacoustic pulsations in a lean premixed swirl flames. Combustion and Flame, 150(1-2):2-26.

[19] Naik, S.V., Laurendeau, N.M., Cooke, J.A., Smooke, M.D., 2003. Effect of radiation on nitric oxide concentration under sooting oxy-fuel conditions. Combustion and Flame, 134(4):425-431.

[20] Qian, S., Chen, D., 1999. Joint time frequency analysis. IEEE Signal Processing Magazine, 16(2):52-67.

[21] Saito, M., Sato, M., Nishimura, A., 1998. Soot suppression by acoustic oscillated combustion. Fuel, 77(9-10):973-978.

[22] Syred, N., 2006. A review of oscillation mechanisms and the role of the processing vortex core (PVC) in swirl combustion systems. Progress in Energy and Combustion Science, 32(2):93-161.

Open peer comments: Debate/Discuss/Question/Opinion


Please provide your name, email address and a comment

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE