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분체공학 , 유동층 , 고분자 , 재료 ( 무기 , 유기 ) : 기름응집법에 의한 무연탄 중의 회분 및 황 성분 제거
손태일(Tae Il Son),이제근(Jae Keum Lee),진경태(Gyoung Tae Jin),김경희(Kyoung Hee Kim) 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.5
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 oi/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.
가압유동층 석탄연소로에서 압력이 연소특성에 미치는 영향
송병호,강용,서용칠,진경태,손재익,김상돈 ( Byung Ho Song,Yong Kang,Yong Chil Seo,Gyoung Tae Jin,Jae Ek Son,Sang Done Kim ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.5
The effect of system pressure on the performance of a pressurized fluidized bed coal combustor(carbon combustion efficiency, bed carbon loading, gaseous concentration profile) has been studied by a PFRC model. The behavior of bubbling bed of Geldart B group does not change by pressurization. The more increase in the carbon combustion efficiency can be obtained by pressurization at conditions of the lower temperature and higher gas velocities. At the bed temperature of 700℃, 5% increase in the carbon efficiency can be obtained with 15 atm. The carbon efficiency increases due to larger oxygen concentration, whereas the bed carbon loading also slightly increases with an increase in system pressure.