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석회석 입도의 변화가 석탄회의 성상에 미치는영향에 관한 연구 KCI 등재

A Study on Characteristics of Fly and Bed Ash in Circulating Fluidized Bed Combustion Boiler According to Particle Size of Limestone

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

The advantage of CFBC(Circulating fluidized bed combustor) is that it can apply to various fuel sources including the lower rank fuel and remove SOx by means of direct supply of limestone to the combustor without additional desulfation facility.
In this paper, we denote characteristics of fly and bed ash to reuse finer limestone usually abandoned(used spec[Coarse LS] 0.1mm under 25%, new spec[Fine LS] 0.1mm under 50%).
According to the results, the chemical composition of fly ash was as follows; SiO2 40.8%, Al2O3 31.9%, CaO 10.7%, K2O 4.46% in the case of coarse limestone and SiO2 41.1%, Al2O3 31.3%, CaO 10.9%, K2O 4.66% in the case of fine limestone. The chemical composition of bed ash was as follows; SiO2 54.2%, Al2O3 33.1%, CaO 1.56%, K20 4.34% in the case of coarse limestone and SiO2 53.8%, Al2O3 32.6%, CaO 2.21%, K2O 4.45% in the case of fine limestone. It showed that there was no significant change in chemical composition. And it is conformed that there was no significant change in particle size and shapes.

저자
  • 정진도(호서대학교 환경공학과) | Jin Do Chung Corresponding Author
  • 김장우(호서대학과 디지털디스플레이공학과) | Jang Woo Kim
  • 하준호(한국동서발전(주) 동해화력발전소) | Joon Ho Ha