Fire and explosion hazard evaluation for the acetone aqueous solutions |
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| Authors: | Yi-Ming Chang Mei-Li You Chien-Hung Lin Siou-Yuan Wu Jo-Ming Tseng Chun-Ping Lin Yaw-Long Wang Chi-Min Shu |
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| Institution: | (1) Department of General Education Center, Chienkuo Technology University, 1, Chieh-Shou N. Rd., Changhua, Taiwan, 50094, ROC;(2) Doctoral Program, Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology (NYUST), 123, University Rd., Sec. 3, Douliou, Yunlin, Taiwan, 64002, ROC;(3) Institute of Safety and Disaster Prevention Technology, Central Taiwan University of Science and Technology, 666, Buzih Rd., Beitun District, Taichung, Taiwan, 40601, ROC;(4) Department of Health and Nutrition Biotechnology, Asia University, 500, Lioufeng Rd., Wufeng, Taichung, Taiwan, 41354, ROC;(5) MSIG Mingtai Insurance Co., Ltd., 1, Jenai Rd., Sec. 4, Taipei, Taiwan, 10685, ROC;(6) Process Safety and Disaster Prevention Laboratory, Department of Safety, Health, and Environmental Engineering, NYUST, 123, University Rd., Sec. 3, Douliou, Yunlin, Taiwan, 64002, ROC; |
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| Abstract: | The prevention of fire and explosion is recognized as an imperative necessity that is a first priority in all operating management
details of the chemical process industries. Based on significant research and original emphasis on loss control and disaster
prevention, this study investigated the flammability characteristics, comprising the lower/upper explosion limit (LEL and
UEL), maximum explosion overpressure (P
max), maximum rate of explosion pressure rise (dP dt
−1)max], gas or vapor deflagration index (K
g), and explosion class (St class) of four acetone aqueous solutions water vapor (steam)/acetone: 75/25, 50/50, 25/75, and 0/100 vol.%], and discussed
the effect of inert steam (H2O(g)) on them. Interactive influences of various loading fuel concentrations and initial testing conditions of 150, 200 °C, and
101, 202 kPa on flammability characteristics were revealed via a 20-L-apparatus. Weighting analysis of the above influence
factors was explored by employing the GM(h,N) grey system theory for rating their fire and explosion hazard degrees both specifically and quantitatively. The results
indicated that the most important influence factor was the initial pressure that the manager or engineer in such a steam/acetone
mixing system should consider to be well-controlled first. The second influence factor in GM(1,N) and GM(0,N) model was the initial temperature and steam/acetone mixing concentration, but the third influence factor was individual
contrariwise. This study established a complete flammability hazard evaluation approach that is combined with an experimentally
and theoretically feasible way for fire/explosion prevention and protection. The outcomes would be useful for positive decisions
for safety assessment for the relevant practical plants or processes. |
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