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Int J Fire Sci Eng > Volume 33(2); 2019 > Article
Fire Science and Engineering 2019;33(2):20-29.
DOI: https://doi.org/10.7731/KIFSE.2019.33.2.020    Published online April 30, 2019.
저탄장 자연발화에 미치는 표면차단제 영향에 관한 수치 해석적 연구
김재관, 박석운, 신동익
1한국전력공사 전력연구원 발전기술연구소
2한국전력공사 전력연구원 발전기술연구소
3한국전력공사 전력연구원 발전기술연구소
Numerical Study on the Effects of Surface-inhibitors on the Spontaneous Ignition of Coal Stockpile
Kim Jae-Kwan, Park Seok-Un, Shin Dong-ik
1Clean Power Generation Laboratory, KEPCO's Research Institute
2Clean Power Generation Laboratory, KEPCO's Research Institute
3Clean Power Generation Laboratory, KEPCO's Research Institute
요약
본 논문에서는 저탄장 석탄더미 표면부에 자연발화 차단제를 도포하였을 경우 자연발화 현상에 미치는 영향을 수치해석적인 방법을 통해 살펴보았다. 먼저 자연발화 차단제를 도포하지 않은 경우를 해석하여 선행연구 결과와 비교하여 본 연구의 수치해석방법을 검증한 후 다양한 자연발화 차단제 도포영역 및 위치에 따른 자연발화 방지효과를 분석하였다. 그 결과, 자연발화 차단제의 도포영역이 넓을수록 석탄더미 내부로의 산소유입이 차단되어 발화방지 효과가 컸으며, 자연발화 차단제를 석탄더미 바닥에서부터 도포하여야 발화방지 효과가 더욱 큰 것으로 나타났다. 자연발화 차단제의 제조비용 등의 경제적인 측면을 고려하여 효과적으로 도포하여야 한다.
Abstract
In this paper, the effect of spontaneous combustion inhibitor on the surface of coal stockpile in coal yard was investigated by numerical analysis. First, the numerical analysis method of the present study was compared with the results of the previous study by analyzing the case where the spontaneous combustion inhibitor was not applied, and the effect of preventing spontaneous combustion by various areas and positions for spraying spontaneous combustion inhibitor was analyzed. As a result, the larger the application area of the spontaneous combustion inhibitor, the more the effect of preventing spontaneous combustion by blocking the oxygen inflow into the coal stockpile, and the greater the effect of the spontaneous combustion prevention when spraying spontaneous combustion inhibitor from the bottom of the coal stockpile. Spontaneous combustion inhibitor should be sprayed effectively, considering the economic aspects, such as manufacturing cost etc.
Key Words: Spontaneous combustion, Coal stockpile, Inhibitor, Coal yard


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