석탄의 고품위화를 위한 기류건조기와 로터리킬른 건조기의 성능 비교평가
Performance Evaluation of a Flash Dryer and a Rotary Kiln Dryer for Upgrading Low Rank Coal
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Drying, which is the oldest and most energy-intensive process, is an essential process for treatment of solid product. The specific procedure to design and evaluate the dryers, which are a rotary kiln dryer and a flash dryer, in case of drying the high-moisture coal was described. From determination of size to the heat and mass balance in one-dimensional model were conducted to evaluate the performance of dryers. Heat consumption, inlet gas temperature and size of the dryers were compared between a rotary kiln dryer and a flash dryer. Further considerations to evaluate the reactor elaborately were also discussed. Performance simulation of dryers along with the design procedure described here will provide helpful basis for understanding the concept of reactor design.
Abstract
Drying, which is the oldest and most energy-intensive process, is an essential process for treatment of solid product. The specific procedure to design and evaluate the dryers, which are a rotary kiln dryer and a flash dryer, in case of drying the high-moisture coal was described. From determination of size to the heat and mass balance in one-dimensional model were conducted to evaluate the performance of dryers. Heat consumption, inlet gas temperature and size of the dryers were compared between a rotary kiln dryer and a flash dryer. Further considerations to evaluate the reactor elaborately were also discussed. Performance simulation of dryers along with the design procedure described here will provide helpful basis for understanding the concept of reactor design.
참고문헌 (6)
- 김상도, "기류건조기를 이용한 고수분 석탄의 건조 특성", Korean Chemical Engineering Research(HWAHAK KONGHAK), 50(1), pp.106~111 (2012), 한국화학공학회
- Mujumdar, A. S., "Classification, and Selection of Dryers(in Handbook of Industrial Drying), 3rd Ed", pp.4~31 (2006), Taylor & Francis Group
- Indarto, A., "Pneumatic Drying of Solid Particle : Experimental and Model Comparison", Experimental Heat Transfer, 20, pp.277~287 (2007)
- 엄민제, "로터리킬른 반응기 설계를 위한 성능해석 모형", 한국연소학회지, 18(3), pp.9~23 (2013), 한국연소학회
- Krokida, M., "Rotary Drying(in Handbook of Industrial Drying), 3rd Ed., Taylor & Francis Group, London", pp.181~187 (2006), Taylor & Francis Group
- Haider, A., "Drag Coefficient and Terminal Velocity of Spherical and Nonspherical Particles", Powder Technology, 58(1), pp.63~70 (1989)