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논문 기본 정보

자료유형
학술저널
저자정보
Park, Ho Young (KEPCO Research Institute, Korea Electric Power Corporation) Park, Yoon Hwa (KEPCO Research Institute, Korea Electric Power Corporation)
저널정보
한국전력공사 KEPCO Journal on electric power and energy KEPCO Journal on electric power and energy 제2권 제1호
발행연도
2016.1
수록면
89 - 96 (8page)

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The mechanism for laminar dust flame propagation can only be elucidated from a comprehensive mathematical model which incorporates conduction and radiation, as well as the chemical kinetics of particle devolatilization and gas phase and char reaction. The mathematical model for a flat, laminar, premixed coal-air flame is applied to the atmospheric coal-air mixtures studied by Smoot and co-workers, and comparisons are made with their measurements and predictions. Here the principal parameter for comparison is the laminar burning velocity. The studies of Smoot and co-workers are first reviewed and compared with those predicted by the present model. The effects of inlet temperature and devolatilization rate constants on the burning velocities are studied with the present model, and compared with their measurements and predictions. Their measured burning velocities are approximately predicted with the present model at relatively high coal concentrations, with a somewhat increased inlet temperature. From the comparisons, their model might over-estimate particle temperature and rates of devolatilization. This would enable coal-air mixtures to be burned without any form of preheat and would tend to increase their computed values of burning velocity.

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