Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Analysis of the Effect of Particle Size and Humidity on Reaction Characteristics of $CaCO_3$ Sorbent Particle under Air and $O_2/CO_2$ Atmospheric Conditions

공기연소 분위기와 순산소 연소 분위기에서 입자 크기와 습도가 $CaCO_3$ 흡착제 입자의 반응특성에 미치는 영향 분석

  • Jeong, Seongha (Department of Mechanical Engineering, KAIST) ;
  • Lee, Kang Soo (Department of Mechanical Engineering, KAIST) ;
  • Keel, Sangin (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials) ;
  • Yun, Jin Han (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials) ;
  • Kim, Sang Soo (Department of Mechanical Engineering, KAIST)
  • 정성하 (KAIST 기계공학과) ;
  • 이강수 (KAIST 기계공학과) ;
  • 길상인 (한국기계연구원 환경.에너지기계연구본부) ;
  • 윤진한 (한국기계연구원 환경.에너지기계연구본부) ;
  • 김상수 (KAIST 기계공학과)
  • Received : 2014.06.02
  • Accepted : 2014.06.25
  • Published : 2014.06.30
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Abstract

It is necessary to find out the reaction characteristics of $CaCO_3$ sorbent particles in air and $O_2/CO_2$ atmospheric conditions in order that an in-furnace desulfurization technique can be applied to oxy-fuel combustion system. In this study, rate of change of GMD(geometric mean diameter) and specific surface area of $CaCO_3$ sorbent particles reacted in DTF(drop tube furnace) experimental setup were analyzed to investigate the effect of particle size and humidity on the reaction characteristics of them. In air atmospheric condition, calcination process occurs actively within shorter residence times as the particle size increases. On the contrary, in $O_2/CO_2$ atmospheric condition, a calcination process is delayed as particle size increases. The increment of humidity accelerates calcination process in an air atmospheric condition and increase rate of calcination in an $O_2/CO_2$ atmospheric condition.

Keywords

References

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