文献类型：期刊文献

英文题名：Effects on External Pressures Caused by Vented Explosion of Methane-Air Mixtures in Single and Connected Vessels

作者：Wang, Zhirong[1];Pan, Moyu[1];Wang, Siqi[2];Sun, Dongliang[3]

机构：[1]Nanjing Tech Univ, Coll Urban Construct & Safety Engn, Jiangsu Key Lab Urban & Ind Safety, Jiangsu Key Lab Hazardous Chem Safety & Control, Nanjing 210009, Jiangsu, Peoples R China;[2]Univ Maryland, Dept Elect Engn, College Pk, MD 20740 USA;[3]E China Univ Sci & Technol, Dept Environm Engn, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：33

期号：4

起止页码：385

外文期刊名：PROCESS SAFETY PROGRESS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000345361800014)】；

基金：This work was supported by National Natural Science Foundation of China (51376088, 50904037); Natural Science Foundation (11KJA620001, 10KJB620001); QingLan Project Plan for Young academic leaders (Universities in Jiangsu Province).

语种：英文

外文关键词：external pressure; vented explosion; connected vessels; structure and form; venting conditions

摘要：An experimental apparatus was built to study the external pressure caused by vented explosions of methane and air mixtures. In some circumstances, two peak points of external pressure induced by vented explosion appear. One of the peaks is caused by the vented flow from the vessel while the other one is due to the vented flow from the vessel or external explosion. Both the maximum external pressure and pressure rising rate increase with initial pressure, explosion venting pressure and vent diameter of the vented vessel. The maximum external pressure and pressure rising rate decrease with the volume of the vessel. The maximum pressure and the maximum pressure increase rate occur when the methane concentration is 9.5%. Compared with explosion outside one single big vessel, explosion outside the connected vessels is more severe. The external pressure caused by ignition in the center of the small vessel is higher than that in the center of the big vessel while the external pressure rising rate caused by ignition in the center of the small vessel is lower than that in the center of the big vessel. (c) 2014 American Institute of Chemical Engineers Process Saf Prog 33: 385-391, 2014