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산소농도 변화에 따른 입상활성탄의 자연발화에 관한 연구
김상렬,목연수,최재욱,류동현,최일곤 한국산업안전학회 1995 한국안전학회지 Vol.10 No.2
The characteristics of critical spontaneous ignition of granulated activated carbon were investigated in atmospheres of differing oxygen concentration. At the same concentration the larger vessels yielded the lower critical spontaneous ignition temperature. At the same vessel, as the concentration of oxygen was reduced, ignition occurred later and at higher ambient temperature, and critical spontaneous ignition temperature increased. The apparent activation energy calculated from the Frank-Kamenetskii's ignition theory appeared to be the slight different value respectively and the mean apparent activation energy was 19850㎈/㏖.
이중관 기포탑내에서의 저농도 알코올류 용액중의 기액간 물질전달
정옥진,김상렬 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-
Gas holdup and volumetric liquid phase mass transfer coefficient in a bubble column of dilute alcohol solutions with a draft tube were measured according to gas velocity, concentration of alcohol and Di/Do. The result of the experiments were as follows ; 1. Gas holdup and volumetric liquid phase mass transfer coefficient increase with increasing the gas velocity. 2. Gas holdup increase with increasing the concentration of alcohol, volumetric liquid phase mass transfer coefficient dereases. 3. Gas holdup and volumetric liquid phase mass transfer coefficient increase somewhat with increasing the Di/Do. 4. Correlation among various parameters having an influence on gas holdup and volumetric liquid phase mass transfer coefficient were expressed by Eq.(5) and Eq.(6) respectively.
활성탄의 자연발화에 있어서 발화유도시간과 온도분포에 관한 연구
김상렬,이상록,최재욱,최광재 한국산업안전학회 1993 한국안전학회지 Vol.8 No.3
The spontaneous ignition induction time and temperature distribution were observed by performing experiments for granulated activated carbon. As the results of the experiments at the same amplitude, the critical spontaneous ignition temperature was decreased with increase of the time period, while, the ignition induction time was increased with the increase of the time period. The critiral spontaneous ignition temperature was decreased with the increase of the amplitude for the shorter period. The temperature distribution of the sample showed the highest around ignition-point at center of the vessel and after ignition the highest temperature was moved toward surface of the vessel.