Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Circularity Measurenment of Fly Ash Using Digital Image Processing

디지털 이미지 분석을 이용한 Fly Ash의 원형지수 측정

  • Lee, Seung-Heun (Faculty of Materials and Chemical Engineering, Kunsan National University) ;
  • Kim, Hong-Joo (Basic Materials Crop., R and D Center) ;
  • Bae, Soon-Muk (Faculty of Materials and Chemical Engineering, Kunsan National University) ;
  • Lee, Won-Jun (Faculty of Materials and Chemical Engineering, Kunsan National University) ;
  • Sakai, Etsuo (Department of Metallurgy and Ceramics Science, Graduate School, Tokyo Institute of Technology) ;
  • Daimon, Masaki (Department of Metallurgy and Ceramics Science, Graduate School, Tokyo Institute of Technology)
  • 이승헌 (군산대학교 재료${\cdot}$화학공학부) ;
  • 김홍주 (기초소재(주) 기술연구소) ;
  • 배승묵 (군산대학교 재료${\cdot}$화학공학부) ;
  • 이원준 (군산대학교 재료${\cdot}$화학공학부) ;
  • ;
  • Published : 2002.01.01
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Abstract

This paper investigates circularity of fly ashes using the digital image processing. Fly ashes directly collect from electrostatic precipitator when the load of conditions of boiler are changed at a coal-fired power plant. Circularity measurement can be accomplished in five steps: ① image acquisition, ② grey image processing, ③ detection the component to measure ④ binary image processing ⑤ feature measurement. The mean circularity of fly ashes is in the range of 0.78 to 0.83. fly ashes collected from the same hopper has similar circularity regardless of the load of boiler and circularity increases as going from the 1st hopper to 3rd one, namely as particle size become finer.

미분탄 화력발전소에서 보일러의 부하를 변화시켰을 때 전기집진기에서 단별 채취한 fly ash에 대해서 디지털 이미지 분석을 이용하여 원형지수를 검토하였다. 원형지수 측정은 다음과 같은 다섯 단계, 즉 ① 이미지 획득, ② 이미지 전처리, ③ 검출, ④ 이미지 후처리, ⑤ 측정의 단계를 거쳐 이루어 졌다. Fly ash의 평균 원형지수는 0.78∼0.83의 범위를 나타냈으며, 같은 위치에 있는 호파에서 채취한 fly ash는 보일러의 부하에 관계없이 유사한 원형지수 값을 나타냈다. 그리고 첫 번째 호파에서 세 번째 호파로 갈수록, 즉 fly ash의 평균 입경이 작아질수록 원형지수는 증가하는 경향을 나타냈다.

Keywords

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