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Environmental Engineering Research 2000;5(1): 1-9.
EVALUATION OF COMBUSTION CHARACTERISTICS OF A LIQUID WASTE INCINERATOR USING LIQUID DROPLET SIZE ANALYSIS AND THERMOGRAVIMETRIC DATA
Dae-Hwan Kim, Sung-Jun Lee, and Yong-Chil Seo
Dept. of Environmental Engineering, Yonsei University, Yonsei Institute of Environmental Science & Technology, Wonju-si 220-710, Korea
Corresponding Author: Dae-Hwan Kim ,
Received: September 16, 1999;  Accepted: February 15, 2000.
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ABSTRACT
Two methods were used to evaluate the performance and combustion efficiency of a liquid waste incinerator. First, destruction and removal efficiency(DRE) of atomizing droplets was investigated with a variation of residence time. Malvern Particle Sizer was used to measure atomizing mean diameter and size distribution of droplets at different atomizing pressures. The results showed that DRE increases linearly with residence time of droplets. Also, residence time could be determined to gel a desired DRE. As a second method, the relationship between residence time and incineration temperature for the DRE was estimated for a few wastes. Thermogravimetric Analysis(TGA) was made to determine reaction kinetic factors such as activation energy and frequency factor and to estimate the correlation of residence time with furnace temperature for a desired DRE. The longer the residence time given, the lower the temperature required for a certain destruction. The liquid incinerator could achieve over 99.99% of DRE at appropriate ranges of temperature.
Keywords: liquid waste incinerator | droplet | evaporation | destruction | combustion characteristic
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