Comparison of Theoretically and Experimentally Determined Simulated Coal Syngas Turbulent Jet Flame Lengths

Byung-Chul Choi; Hyung-Taek Kim

Journal of Industrial and Engineering Chemistry, Vol.8, No.6, 578-585, November, 2002

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Comparison of Theoretically and Experimentally Determined Simulated Coal Syngas Turbulent Jet Flame Lengths

Byung-Chul Choi, and Hyung-Taek Kim^†

Department of Energy Studies, Ajou University, Suwon 442-749, Korea

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The current paper describes the results of a systematic experimental study of the visible lengths of coal-derived syngas jet diffusion flames. A combustion system was designed to produce a uniform swirl diffusion flame, for comprehending the flame characteristics of coal-derived fuel. To determine the flame length characteristics of the flame, the nozzle diameter of the lab-scale combustor was varied at 1.23, 1.96, and 2.95 mm and the flame length of each condition was studied. The fuel gases used were various compositions of CO and H2, simulating the composition of coal synthetic gases. The flame length characteristics of the simulated coal synthetic gases with different compositions were examined. The results of the experiment were compared with the characteristics of a pure methane flame using the dimensionless flame length, L*. The calculated flame lengths were slightly lower than the actual measured flame lengths, and the flame length values for both cases were well matched with values obtained at the corresponding experimental conditions. Accordingly, within the experimental parameters of the current investigation, the flame length was mainly determined by the nozzle type of the combustor.

Keywords:diffusion flame;flame length;simulated coal syngas

[References]

Cho D, Moon I, Whang S, Oh M, J. Ind. Eng. Chem., 7(1), 30 (2001)
Gore JP, Ph.D. Thesis, Pennsylvania State University, USA (1986)
Wohl K, Gazley C, Kapp N, Third Symposium on Combustion and Flame and Explosion Phenomena, pp. 288, Williams & Wilkins, Baltimore (1946)
Turns SR, Bandaru RB, Oxides of Nitrogen Emission from Turbulent Hydrocarbon/Air Jet Diffusion Flames, Final Report-Phase II GRI 92/0470, Gas Research Institute (1992)
Delichatsios MA, Combust. Flame Sci., 92, 349 (1993)
Miyasato MM, MS. Thesis, University of California at Irvine, USA (1993)
Choi BC, Kim HT, Korean Society of Energy Engineering, Fall Meeting, p. 37, Daejeon, Korea (2001)
Feikema D, Chen RH, Driscoll JF, Combust. Flame Sci., 180, 183 (1990)
Kalghatgi GT, Combust. Sci. Technol. Sci., 41, 17 (1984)
Turns SR, An Introduction to Combustion, 1st Edn., pp. 421, McGraw-Hill, Singapore (1996)
Becker HA, Liang P, Combust. Flame Sci., 32, 115 (1978)

[Referenced By]

[1] Cho D, Moon I, Whang S, Oh M, J. Ind. Eng. Chem., 7(1), 30 (2001)

[2] Gore JP, Ph.D. Thesis, Pennsylvania State University, USA (1986)

[3] Wohl K, Gazley C, Kapp N, Third Symposium on Combustion and Flame and Explosion Phenomena, pp. 288, Williams & Wilkins, Baltimore (1946)

[4] Turns SR, Bandaru RB, Oxides of Nitrogen Emission from Turbulent Hydrocarbon/Air Jet Diffusion Flames, Final Report-Phase II GRI 92/0470, Gas Research Institute (1992)

[5] Delichatsios MA, Combust. Flame Sci., 92, 349 (1993)

[6] Miyasato MM, MS. Thesis, University of California at Irvine, USA (1993)

[7] Choi BC, Kim HT, Korean Society of Energy Engineering, Fall Meeting, p. 37, Daejeon, Korea (2001)

[8] Feikema D, Chen RH, Driscoll JF, Combust. Flame Sci., 180, 183 (1990)

[9] Kalghatgi GT, Combust. Sci. Technol. Sci., 41, 17 (1984)

[10] Turns SR, An Introduction to Combustion, 1st Edn., pp. 421, McGraw-Hill, Singapore (1996)

[11] Becker HA, Liang P, Combust. Flame Sci., 32, 115 (1978)