Study on the effect of thermal property of powder on the gas explosion suppression

摘要：

The decomposition experiments of Al(OH)3, Mg(OH)2 and Urea were conducted by TG and DSC. The thermal characteristics of powders were obtained. It shows that pyrolysis temperature of Urea (133℃) was lower than that of Al(OH)3 and Mg(OH)2, and its heat absorption (1291 J/g) was larger than Al(OH)3 and Mg (OH)2. Suppression mechanisms of gas explosion were analyzed and compared. The results showed the performance of Urea was better than that of the other two materials because of Ureas faster decomposition rate, greater heat absorption and more free radical generated during the period of decomposition process. Also the suppression performance of Urea was confirmed by the gas explosion experiments.

关键词： explosion suppression material gas powder thermogravimetirc analysis

作者: Minggao Yu Tianzheng Wang HaoYou An An

作者单位: School of Safety science and Engineering Henan Polytechnic University, Jiaozuo 454003, Henan,China School of Safety science and Engineering Henan Polytechnic University, Jiaozuo 454003, Henan,China S Zhengzhou Coal Administrative Bureau, Zhengzhou 454000, Hennan, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 1150-1157

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）