초록 close

After examining the characteristics of the heat decomposition of the 80~120mesh flour using the Mini cup pressure vessel test and determining the apparent activation energy in a spontaneous combustion, the conclusion is as follows. The heat decomposition of flour occurs at around 100℃ and the peak for the maximum rise in pressure appears at around 290℃. The decomposition pressure against various temperature in the vessel shows the maximum value of 4.7kg/cm2 approximately at 440℃. When the thickness of the sample is 3cm, the maximum temperature and the critical temperature of ignition are 398℃ and 204.5℃, respectively; the critical temperature is 194.5℃ when the thickness of the sample is 5cm, and 182.5℃ when the sample is 7cm. In addition, the apparent velocity calculated using the method of least squares is 35.0407Kcal/mol