浓度梯度对工业可燃气云爆炸特性影响  

Effect of Concentration Gradient on Explosion Characteristics of Industrial Combustible Gas Cloud

作　　者：代书绮 郭文杰 屠越 杨俊杰 韩佳豪 DAI Shuqi;GUO Wenjie;TU Yue;YANG Junjie;HAN Jiahao(School of Chemical Engineering and Safety,Binzhou University,Binzhou Shandong 256600,China)

机构地区：[1]滨州学院化工与安全学院,山东滨州256600

出　　处：《辽宁化工》2024年第10期1577-1580,共4页Liaoning Chemical Industry

基　　金：滨州学院基金项目(项目编号:bzxylg1915);滨州学院实验技术项目(项目编号:BZXYSYXM201618);2022年山东省大学生创新训练项目(项目编号:S202210449006)。

摘　　要：工业管道泄漏形成的可燃气云浓度分布往往是不均匀的,为了模拟工业可燃气体泄漏爆炸,并提高计算的准确性,以平行梯度浓度气云爆炸为研究对象模拟工业可燃气云爆炸过程,分别以均匀气云、多层具有平行梯度浓度的不均匀半球形气云为研究对象,模拟了工业可燃气体泄漏导致气云爆炸特性。还以3层平行浓度气云为例,研究了点火位置、浓度分布对氢气气云爆炸的影响。结果表明:与均匀分布气云相比,具有梯度浓度的气云产生的爆炸冲击波明显减弱,且氢气浓度分布越不均匀、点火位置处氢气浓度越低,产生的爆炸超压越小。研究结果为氢气气云爆炸后果预测及事故预防提供数据参考。The concentration distribution of combustible gas cloud formed by industrial pipeline leakage is often uneven.In order to simulate the explosion of industrial combustible gas leakage and improve the accuracy of calculation,the explosion process of industrial combustible gas cloud was simulated with parallel gradient concentration gas cloud explosion as the research object,and the characteristics of gas cloud explosion caused by industrial combustible gas leakage were simulated with uniform gas cloud and multi-layer heterogeneous hemispherical gas cloud with parallel gradient concentration as the research object.The effects of ignition position,concentration distribution on the explosion of hydrogen gas cloud were studied by taking three parallel concentration gas clouds as examples.The results showed that compared with the uniformly distributed gas cloud,the explosion shock wave generated by the gas cloud with gradient concentration was significantly weakened,and the more uneven the hydrogen concentration distribution and the lower the hydrogen concentration at the ignition position,the smaller the explosion overpressure generated.The results of this paper provide data reference for the prediction of the consequences of hydrogen gas cloud explosion and accident prevention.

关 键 词：工业可燃气云 爆炸超压 数值模拟 平行浓度梯度 

分 类 号：TE48[石油与天然气工程—油气田开发工程]