Qinpei Chen,Yaping He,Xuehui Wang,Tiannian Zhou,Chao Ding,Jian Wang
Summary To study the low pressure influence on the flash point and fire hazard of organic fuels and their aqueous solutions, a series of experiments has been conducted to measure the open-cup and closed-cup flash points of methanol, ethanol, and n -decane aqueous solutions including different mole fractions under different static pressures ranging from 35 to 101 kPa. The results show that both the pressure and fuel mole fraction have a nonlinear correlation with the flash point of the miscible fuel specimens like the correlation provided in this paper. For the partially miscible fuel specimens with a lower density than water, the water content has almost no influence on the flash point. The fire risks of the experimental results were analysed based on the standard GB50160-2008, which shows that the fire risk becomes higher at low pressures, and there is a critical pressure at the turning point of the change in fire classification. A method to achieve the critical low pressure of different fuels or aqueous solutions from the fire hazard classification is derived in this paper.
In this study, a series of ethanol–water mixture and Chinese liquor combustion experiments were conducted using an ISO5660-1 cone calorimeter and an automatic flash point tester. The main purpose was to obtain key fire parameter data, including the burning duration, mass loss rate, mass loss rate per unit area, heat release rate per unit area, CO and CO 2 volume fraction, CO 2 /CO ratio and closed-cup flash point. At the same time, the experimental differences between Chinese liquor and ethanol–water mixture were analyzed. Also, the fire risk classification was discussed based on the code of GB 50016-2014. When the ethanol volume fraction of Chinese liquor is greater than 34.8 vol%, the fire risk is the most dangerous level, Class I. While the critical ethanol volume fraction of ethanol–water mixture is 38.9 vol%, it needs to pay more attention to the fire safety of Chinese liquor storage and usage when the ethanol volume fraction is generally from 30 to 65 vol%.
危险品化学品经营许可证（带存储）