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Received October 20, 2002
Accepted February 28, 2003
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Computational Fluid Dynamics (CFD) Analysis and Experimental Study for Toxic Hazardous Waste Destruction in the Cavity Incinerator
Department of Environmental Engineering, ,, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Korea
Korean Journal of Chemical Engineering, July 2003, 20(4), 670-678(9), 10.1007/BF02706906
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Abstract
We undertook numerical and experimental studies to develop a better incineration method for the destruction of CCl4. A phenomenological model for the turbulent reaction of CCl4, including a flame inhibition feature, has been successfully incorporated into a commercial code, simulating the incineration processes of this compound. The gaseous flow solution was obtained using SIMPLEST, a derivative of Patankar’s SIMPLE algorithm, with a k-ε turbulence model. A modified fast chemistry turbulent reaction model was developed to describe the flame inhibition due to the presence of CCl4, considering the corresponding burning velocity data of these mixtures. An experiment was carried out on a 5.2 kW laboratory scale, transportable, cavity-type incinerator, which warrants a sufficient residence time and effective turbulent mixing by the formation of a strong recirculation region in a combustor. To this end, the specific configuration of the incinerator was manufactured to consist of two opposing jets and a rearward facing step. The calculated data were in close agreement with the experimental data for the concentrations of major species,_x000D_
such as CCl4 and HCl, together with the temperature profiles. The experimental test gave the desired DRE of above 99.99%.
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Chun YN, J. KSME, 13, 948 (1999)
Cole JA, Widmer NC, Seeker WR, Schadow KC, Parr TP, Wilson KJ, Chemosphere, 42, 765 (2001)
Cundy VA, Morse JS, Lester TW, Senser DW, Chemosphere, 6, 989 (1987)
Glassman I, "Combustion," Academic Press, New York, 118 (1996)
Gutmark EJ, Parr TP, Wilson KJ, Yu KH, Smith RA, HansonParr DM, Schadow KC, Combust. Sci. Technol., 121(1-6), 333 (1996)
Jones A, Bliss H, Walker C, AIChE J., 12, 260 (1966)
Launder BW, Spalding DB, "Mathematical Models of Turbulence," Academic Press, New York (1998)
Liou TM, Lee HL, Liao CC, Experimental Thermal Fluid Sci., 24, 11 (2001)
Lockwood FC, Salooja AP, Syed SA, Combust. Flame, 38, 1 (1980)
Magnussen BF, Hjertager H, "On Mathematical Modeling of Turbulent Combustion with Special Emphasis on Soot Formation and Combustion," 16th Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 714 (1976)
McKenty F, Gravel L, Camarero R, Korean J. Chem. Eng., 16(4), 482 (1999)
Morse JS, Cundy VA, Lester TW, "Thermal Destruction of Carbon Tetrachloride," 1988 Spring Meeting, Western Section, March 21-22, Salt Lake City, Utah, the Combustion Institute, 299 (1988)
Oppelt T, J. Air Pollut. Control Assoc., 37, 558 (1987)
Patankar SV, "Numerical Heat Transfer and Fluid Flows," Hemisphere, Washington, D.C. (1980)
Spalding DB, "Phoenics Training Course Notes," Cham TR/300 (1988)
Spalding DS, "Idealizations of Radiation, In Mathematical Modelling of Fluid-Mechanics," Heat Transfer and Chemical-Reaction Process, Lecture 9, HTS/80/1, Imperial College, Mech. Eng., Dept., London (1980)
Stone C, Menon S, "Numerical Simulation of Combustion Dynamics in a Swirling Flow Dump Combustor," High Performance Computing 2001, Grand Challenges in Computer Simulations, April 22, Seattle, WA (2001)
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Westbrook CK, Dryer FL, "Inhibition Effect of Halogens on the Oxidation of Hydrocarbon/air Flames," 18th Symposium (International) onCombustion, The Combustion Institute, Pittsburgh, 749 (1981)