Experimental simulation on oil gas spreading in the complex confined spaces

摘要：

　　In the process of mass production,usage,transport and storage of petroleum products,it would be occurred any time that the oil products leak to generate oil gas spreading which leads to serious accidents in fire and explosion safety.The cause and damage extent of oil gas explosion hazards in a confined space is not only limited to ambient temperature,humidity and other environmental conditions,but also depends on the speed,extent and concentration distribution of the oil gas spreading.In this paper,the special phenomenon,spreading law,the characteristic parameter and the main influencing factors of oil gas spreading in the complex confined spaces are studied and analyzed from the simulation experiments.The results show that the oil gas spreading process in the complex confined spaces can be divided into three stages,namely,the gravity settling stage,adherent diffusion stage and passive mass transfer stage.Many factors,such as the cross-section shape,wall roughness,ratio between length and diameter and so on,will directly affect the oil gas spreading in the complex confined space.The oil gas concentration in the outlet can reach up to about 51.28% of that in the inlet.Meanwhile,the oil gas concentration of the leakage source has great impact on the spreading process,and higher concentration will accelerate the spreading process.

关键词： complex confined space oil gas spreading experimental simulation analysis and research

作者: DU Yang ZHOU Yi LI Yinchang ZHOU Dewen ZHANG Peili WANG Peiwen

作者单位: Dept.of Petroleum Supply Engineering,Logistical Engineering University,Chongqing 401311,China

会议类型: 国际会议

会议名称: 2012 International Symposium on Safety Science and Technology (2012安全科学与技术国际会议)

会议地点: 南京

会议语种:英文

页码: 360-365

在线出版日期: 2012-10-23（万方平台首次上网日期，不代表论文的发表时间）