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논문 기본 정보

자료유형
학술대회자료
저자정보
Yong-Gyun Kim (부산대학교) Ju-hun Song (부산대학교) Chung-Hwan Jeon (부산대학교)
저널정보
한국연소학회 KOSCO SYMPOSIUM 논문집 2010년도 한국연소학회 제40회 춘계학술대회 KOSCO SYMPOSIUM 논문집
발행연도
2010.6
수록면
409 - 417 (9page)

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초록· 키워드

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Oxy-coal combustion is the one of the promising alternatives to achieve carbon dioxide capture and clean coal technology. In this study, the characteristic of sub-bituminous coals combustion mainly on devolatilization and char oxidation processes, were investigated through flame structure and length. The effects of particle and oxygen mole fraction in N₂ and CO₂ diluent gases respectively were studied in a Laminar Flow Entrained Reactor system that produces similar environment of utility furnace in terms of high heating rate and temperature O₂ mole fraction is varied 0~50%.
There is a little difference of burning time between two different sub-bituminous coals and the larger size shows thicker and longer flame. The flame length becomes shorter as increase of O₂ concentration. It means that the reactivity in both devolatilization and char oxidation process is increased in higher O₂ concentration environment. It is barely seen that volatile burning realm became shrink and O₂ diffusion speed is accelerated and the luminosity is concentrated on near burning particle as increasing O₂ concentration.
In the comparison of two O₂/CO₂ and O₂/N₂ environment effect, the flame in the oxy-fuel condition is seen shorter than that in the O₂/N₂ condition.

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ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgement
References

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UCI(KEPA) : I410-ECN-0101-2010-431-002483250