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기름응집법에 의한 무연탄 중의 회분 및 황 성분 제거
Rejection of Ash and Sulfur in Anthracite Coals using Oil Agglomeration
부경대학교 환경시스템공학부, 부산 608-737 1한국에너지기술연구원 에너지환경연구부, 대전 305-343
Division of Environmental Systems Engineering, Pukyong National University, Pusan 608-737, Korea 1Energy Environment Research Department, Korea Institute of Energy Research, Daejeon 305-343, Korea
leejk@pknu.ac.kr
HWAHAK KONGHAK, October 2001, 39(5), 624-628(5), NONE
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Abstract
회분식 교반 반응조에서 기름응집법을 이용하여 무연탄으로부터 회분과 황 제거 실험을 수행하였다. 가교용매로는 펜탄(pentane), 헵탄(heptane), 등유(kerosene)를 사용하였다. 운전 변수로는 기름/석탄비, 교반속도, tumbling 시간, 그리고 pH를 선정하였으며 모든 실험은 실온에서 수행하였다. 연구 결과 선택된 조업 변수는 고정탄소 회수율, 회분 제거율, 황 제거율에 영향을 미치는 것으로 나타났고, 고정탄소 회수율과 회분 제거율 그리고 황 제거율의 최대값은 각각 95%, 65%, 60% 이상으로 나타났으며, 상당량의 중금속이 제거되었다. 또한 최대 효율은 기름/석탄비 0.2, 그리고 pH 12에서 얻어졌다.
A study on the rejection of ash and pyritic sulfur in anthracite coals using oil agglomeration was carried out in a batch type agitation vessel. In this experiment, three kinds of bridging oils such as pentane, heptane, and kerosene were used. Operation variables were oil/coal ratio, agitation speed, tumbling time, and pH. All the experiments were performed at room temperature. It was shown that the parameters used significantly effected on the fixed carbon recovery, and rejection of ash, sulfur, and heavy metals. The maximum values of fixed carbon recovery and rejection of ash and sulfur were over 95%, 65% and 60%, respectively. The optimum operating conditions were obtained at the oil/coal ratio of 0.2 and pH 12.
Keywords
References
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