다단사이클론 예열소성로와 로터리킬른 소성로의 성능 모형평가: 시멘트공정사례
Performance Evaluation of a Multistage-Cyclone Pre-heating Calciner and a Rotary Kiln Calciner: Case of a Cement Process
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Calcination, which represents thermal decomposition of CaCO3, is the key reaction in a cement process. Some reactions including heating-up also take place simultaneously in the calcination reactors. Basic thermal performance and dimensions of the reactors in two cases, which are a rotary kiln wih a four-stage cyclone pre-heater and a simple single rotary kiln, were compared. To employ the heat transfer, mass transfer and reaction rate as well as calcination, one-dimensional modeling was conducted in each case. Some simplification about the reactors was described, however, the reliable Nusselt number and heat transfer coefficients on the reactors were used to make results reliable.
Abstract
Calcination, which represents thermal decomposition of CaCO3, is the key reaction in a cement process. Some reactions including heating-up also take place simultaneously in the calcination reactors. Basic thermal performance and dimensions of the reactors in two cases, which are a rotary kiln wih a four-stage cyclone pre-heater and a simple single rotary kiln, were compared. To employ the heat transfer, mass transfer and reaction rate as well as calcination, one-dimensional modeling was conducted in each case. Some simplification about the reactors was described, however, the reliable Nusselt number and heat transfer coefficients on the reactors were used to make results reliable.
참고문헌 (17)
- Engin, T., "Energy Auditing and Recovery for Dry Type Cement Rotary Kiln Systems-A Case Study", Energy Conversion and Management, 46, pp.551~562 (2005)
- Khurana, S., "Energy Balance and Cogeneration for a Cement Plant", Applied Thermal Engineering, 22, pp.485~494 (2002)
- Kabir, G., "Energy Audit and Conservation Opportunities For Pyroprocessing Unit of a Typical Dry Process Cement Plant", Energy, 35, pp.1237~1243 (2010)
- Mujumdar, K. S., "Simulation of Rotary Cement Kilns Using a One-Dimensional Model", Chemical Engineering Research and Design, 84, pp.165~177 (2006)
- Choi, H., "Modeling of a Combined Suspension Preheater and the Fluidized Calciner of a Cement Plant", Journal of the Korean Institute of Chemical Engineers, 25(4), pp.355~366 (1987)
- Krokida, M., "Rotary Drying(in Handbook of Industrial Drying), 3rd Ed", pp.181~187 (2006), Taylor & Francis Group
- Oritz, F., "Modeling of Fire-Tube Boilers", Applied Thermal Engineering, 31, pp.3463~3478 (2011)
- Stairmand, C. J., "Design and Performance of Cyclone Separators", Transactions of the Institution of Chemical Engineers, 29, pp.356~573 (1951)
- Swift, P., "Dust Control in Industry, 2", Steam Heat Engineer, 38, pp.453~456 (1969)
- Lapple, C. E., "Process Use Many Collectors", Chemical Engineering, 58, pp.144~ (1951)
- Owens, W. D., "Thermal Analysis of Rotary Kiln Incineration : Comparison of Theory and Experiment", Combustion and Flame, 86, pp.101~114 (1991)
- Mintus, F., "Wet Process Rotary Cement Kilns : Modeling and Simulation", Clean Technology Environment Policy, 8, pp.112~122 (2006)
- 엄민제, "로터리킬른 반응기 설계를 위한 성능해석 모형", 한국연소학회지, 18(3), pp.9~23 (2013), 한국연소학회
- Smirnov, A. S., "Mathematical model of flow in the reverse-flow cyclone (in Russian)", Khimiia Khim, Tekhnologiia, 35, pp.108~113
- Basu, P., "Boilers and Burners Design and Theory", pp.334~338 (1999), Springer
- Raju, R. H., "Gas-Solid Heat Transfer in Cyclone Heat Exchanger, Gas-Solid Heat Transfer in a Gas Cyclone", Journal of the Indian Institute of Chemical Engineers, 36(1-2), pp.58~62 (1994)
- Yen, S. C., "Gas-Solid Heat Transfer in a Gas Cyclone", Journal of the Chinese Institute of Engineers, 21(4), pp.197~206 (1990)