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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제24권 제2호
발행연도
2008.4
수록면
238 - 248 (11page)

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This study investigated mercury emission at various combustion conditions and analyzed mercury species in flue gas from coal combustion at a laboratory scale furnace in coal. The results of this study can be used to predict and to assess mercury emission at coal boilers and power plants. The coal used in the plants generally contains about 0.02~0.28 ㎎ of mercury per ㎏. Bituminous and anthracite coal used for the experiment contained 0.049 and 0.297 ㎎/㎏ of mercury, respectively. Mercury emissions during coal combustion at temperatures range of 600℃ to 1,400℃ was measured and analysed using Ontario Hydro method; the speciation changes were also observed in mercury emissions. The results showed higher fraction of elemental mercury than that of oxidised mercury at most temperatures tested in this experiment. The fraction of elemental mercury was lower in combustion of anthracite coal than in bituminous combustion. As expected, equilibrium calculations and real power plants data showed good similarity. The distribution of particle size in flue gas had the higher peak in size above 2.5 ㎛. However the peak of mercury enrichment in dust was at 0.3 ㎛, which could be easily emitted into atmosphere without filtration in combustion system. When the CEA (Chemical equilibrium and Application) code was used for combustion equilibrium calculation, Cl was found to be the important component effecting mercury oxidation, especially at the lower temperatures under 900℃.

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Abstract
1. 서론
2. 실험 및 방법
3. 결과 및 토의
4. 결론
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