Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Performance Evaluation of a Flash Dryer and a Rotary Kiln Dryer for Upgrading Low Rank Coal

석탄의 고품위화를 위한 기류건조기와 로터리킬른 건조기의 성능 비교평가

  • Eom, Taegyu (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Choi, Sangmin (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 엄태규 (한국과학기술원 기계공학과) ;
  • 최상민 (한국과학기술원 기계공학과)
  • Received : 2014.12.30
  • Accepted : 2015.06.05
  • Published : 2015.06.30
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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.

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References

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