摘要
为研究7-氨基头孢烷酸(7-ACA)粉体实际生产过程中的燃爆危险性,模拟实际生产环境,测试了7-ACA粉体在有机溶剂丙酮存在环境下的燃爆特性及氮气、二氧化碳和氩气的抑爆效果。实验测得,配比为1 g粉体0. 25 m L丙酮与1 g粉体0. 5 m L丙酮的混合粉最小点火能分别为11 m J和4 m J;最大爆炸压力分别为0. 75 MPa和0. 78 MPa;最大爆炸压力上升速率为103. 98 MPa/s和144. 71 MPa/s。结果显示:向粉体中加入丙酮后,混合物的燃烧敏感性增强,燃爆危险性增加。设计混气系统,测试氮气、二氧化碳及氩气对混合物的抑爆效果,结果显示,二氧化碳抑爆效果最好,氮气、氩气次之。
To study the explosion hazard of 7-aminocephalosporanic acid(7-ACA)powder in the actual production,the actual production environment is simulated and it is tested the explosion characteristics of 7-ACA powder in the presence of organic solvent acetone and the explosion suppression effect of several kinds of inert gases,such as nitrogen,carbon dioxide and argon.It is measured that,the minimum ignition energy for mixed powder 1 g dust 0.25 mL acetone and 1 g powder 0.5 mL acetone is 11 mJ and 4 mJ respectively,the maximum explosion pressure is 0.75 MPa and 0.78 MPa respectively and the maximum explosion pressure rise rate is 103.98 MPa/s and 144.71 MPa/s respectively.The results show that,the combustion sensitivity of mixture and the risk of explosion have increased after adding acetone.The mixture system is designed to test the explosion suppression effect of nitrogen,carbon dioxide and argon on the mixture.The results show that carbon dioxide has the best explosion suppression effect,followed by nitrogen and argon.
作者
柳晓凯
张金锋
解启航
王浩
陈金致
LIU Xiaokai;ZHANG Jinfeng;XIE Qihang;WANG Hao;CHEN Jinzhi(School of Environmental Science and Engineering,Hebei University of Science and Technology Shijiazhuang 050018)
出处
《工业安全与环保》
2018年第11期17-20,共4页
Industrial Safety and Environmental Protection
关键词
7-ACA
丙酮
粉尘爆炸
爆炸参数
抑爆
7-ACA
acetone
dust explosion
explosion parameters
explosion suppression
作者简介
柳晓凯,男,1991年生,硕士研究生,主要从事工业气体及粉体安全与环保防治技术方向的研究。
