Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Performance Evaluation of a Multistage-Cyclone Pre-heating Calciner and a Rotary Kiln Calciner: Case of a Cement Process

다단사이클론 예열소성로와 로터리킬른 소성로의 성능 모형평가: 시멘트공정사례

  • 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 : 2015.02.17
  • Accepted : 2015.06.02
  • Published : 2015.06.30
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Abstract

Calcination, which represents thermal decomposition of $CaCO_3$, 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.

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References

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