Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Consideration on the Prediction Approach of Ash Deposition Propensity in Coal-fired Boilers

석탄 보일러에서 회분 부착성향 예측 접근 방법에 대한 고찰

  • Kim, Daehee (Energy Technology Institute, Hyundai Heavy Industries) ;
  • Choi, Sangmin (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jung-Rae (Energy Technology Institute, Hyundai Heavy Industries)
  • 김대희 (현대중공업 에너지기술연구소) ;
  • 최상민 (한국과학기술원 기계공학과) ;
  • 김정래 (현대중공업 에너지기술연구소)
  • Received : 2017.04.07
  • Accepted : 2017.11.28
  • Published : 2017.12.30
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Abstract

Various approaches have been proposed to predict the ash deposition (slagging and fouling) propensity of coal, which is essential in maintaining high efficiency and preventing corrosion/damage of a coal-fired boiler. The common method is to establish an index of the ash deposition propensity based on elementary coal composition and advanced characterization of ash properties, which is readily applicable to design, operation and maintenance of coal-fired boilers. Although many indexes have been developed for this purpose, their validity is still not satisfactory in actual applications to particular coal types or operating conditions. This paper reviews the status of predictive approaches for the ash deposition propensity, and assesses the performance of existing indexes by comparing the results for selected coals. This work will contribute to the development of a comprehensive and practical method for prediction of the ash deposition propensity.

Keywords

References

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