Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Desulfurization Efficiency of Lime Absorbent in In-Furnace Desulfurization as Fly Ash Binder in Power Plant

발전소 비산재를 결합재로 활용한 로내탈황용 석회 흡수제의 탈황효율

  • Seo, Jun-Hyung (Department of Research and Development, Korea Institute of Limestone and Advanced Materials) ;
  • Baek, Chul-Seoung (Department of Research and Development, Korea Institute of Limestone and Advanced Materials) ;
  • Cho, Jin-Sang (Department of Research and Development, Korea Institute of Limestone and Advanced Materials) ;
  • Ahn, Ji-Whan (Center for Carbon Mineralization, Korea Institute of Geoscience and Mineral Resources) ;
  • Yoon, Do-Young (Department of Chemical Engineering, Kwangwoon University) ;
  • Cho, Kye-Hong (Department of Research and Development, Korea Institute of Limestone and Advanced Materials)
  • 서준형 (한국석회석신소재연구소 연구개발실) ;
  • 백철승 (한국석회석신소재연구소 연구개발실) ;
  • 조진상 (한국석회석신소재연구소 연구개발실) ;
  • 안지환 (한국지질자원연구원 탄소광물화사업단) ;
  • 윤도영 (광운대학교 화학공학과) ;
  • 조계홍 (한국석회석신소재연구소 연구개발실)
  • Received : 2018.04.16
  • Accepted : 2018.06.12
  • Published : 2018.06.30
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Abstract

For the recycling of coal ash from the domestic circulating fluidized bed boilers, a lime-based sorbent with 0.2~0.4 mm size was prepared by using limestone powder and CFBC fly ash. Mixing a small amount of slaked lime in the lime-based absorbent lead the formation of calcium silicate on the surface of the particle and the strength of absorbent particle was improved. As a result of comparing the desulfurization characteristics, it was found that the conversion rate was about 10% higher than that of commercially available limestone desulfurization used in the furnace, which is confirmed that it can be used as a desulfurization absorbent.

국내 순환유동층보일러형 발전소에서 발생하는 석탄재의 재활용을 위해 석회석 미분말과 CFBC 비산재를 이용하여 0.2~0.4 mm 크기를 가지는 석회계 흡수제를 제조하였다. 석회계 흡수제에 소석회를 소량 혼합한 결과 칼슘실리케이트 성분이 입자 표면에 형성되어 강도가 향상되었으며, 탈황특성을 비교한 결과 상업적으로 사용되고 있는 로내탈황용 석회석보다 약 10% 정도 높은 전환율을 가진 것으로 나타나 탈황 흡수제로 활용 가능함을 확인하였다.

Keywords

References

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