Simulation Study on the Effects of Heating Rate and Particle Size Distribution for the Formation of the Agglomerate During CWM Combustion

CWM 연료의 연소시 입자 가열속도와 입자 크기가 CWM 응집물 형성에 미치는 영향에 관한 전산모사 연구

  • 김수호 (충북대학교 공과대학 화학공학과) ;
  • 김영환 (충북대학교 공과대학 화학공학과) ;
  • 황갑성 (충청대학 환경공업과) ;
  • 홍성선 (충북대학교 공과대학 화학공학과)
  • Received : 1997.12.15
  • Accepted : 1998.02.27
  • Published : 1998.06.10

Abstract

A theoretical model of particle agglomeration was developed to investigate the adhesive force between contiguous coal particles in CWM agglomerate. While heating bituminous coal to about $400^{\circ}C$ or above, the transient occurrence of plastic behavior of coal particles can be observed. The adhesive force in the process of agglomeration of coal particles was found to be proportional to the duration of plasticity of the particles. In the research, how the heating rate and the particle size distribution of CWM fuel influenced the formation of the agglomerate in CWM fuel at the heat-up stage was investigated by the model of particle agglomeration. Simulation program used to this experiment was RKG method and was programmed by Fortran. It was represented that by the model of particle agglomeration, the adhesive force in the process of the particle agglomeration in CWM fuel was inversely proportional to the heating rate but proportional to particle size.

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