基于DPM模型的水喷雾抑制氯气泄漏扩散方法研究  

Research on the Method of Controlling Chlorine Leakage and Diffusion by Water Spray Based on DPM

作　　者：范林盛 刘勇 白金花[1] 程智慧[1] FAN Linsheng;LIU Yong;BAI Jinhua;CHENG Zhihui(School of Resource Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Key Laboratory of Safe Mining Techniques for Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湖南科技大学南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室,湖南湘潭411201 [3]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《安全与环境工程》2023年第6期89-95,共7页Safety and Environmental Engineering

基　　金：国家自然科学基金面上项目(52074118);湖南省教育厅科学研究项目(21A0306、20A192、19A167)。

摘　　要：有效的有毒气体泄漏扩散抑制方法可以减少液氯槽罐车道路运输事故泄漏后对周围人员生命健康的威胁。运用理论分析与数值模拟相结合的方法,建立了水喷雾抑制氯气泄漏扩散控制模型;采用Fluent软件对水喷雾抑制氯气泄漏扩散行为进行了数值模拟,分析了基于离散相模型(DPM)的不同喷射源类型、位置、数量等关键参数对氯气泄漏扩散抑制效果的影响。结果表明:不同喷射源类型水雾均能对氯气泄漏扩散起到抑制作用,但作用方式不同;在坡道路面设置水雾喷射源对坡道路面的氯气云团扩散具有更好的抑制效果,且随着与罐体距离的缩短,其抑制效果更佳;在坡道路面与平面路面的交界处或附近设置水雾喷射源,对平面路段后方的氯气云团扩散具有较好的抑制效果;随着水雾喷射源数量的增加,水雾对氯气泄漏扩散的抑制作用增强。该研究成果可为液氯道路运输过程中的氯气泄漏扩散应急处置提供理论依据。Much more effective method of suppressing the leakage and diffusion of toxic gas can reduce the threat of leakage accidents of liquid chlorine tank trucks during highway transportation.Firstly,we established a control model to suppress chlorine leakage and diffusion of water spray with the combination of the theoretical analysis and numerical simulation theory.Then,we used Fluent software to simulate the beha-vior of suppressing the leakage and diffusion of chlorine by water spray,and calculated the influence of different key parameters,including the type,the location and the quantity of injection sources on the suppression effect of chlorine diffusion based on the discrete phase model(DPM).Finally,we analyzed and evaluated the influence consequence.The results show that different injection source types can play a suppression role to leakage and diffusion of chlorine,but the mode of action is different.Dilution effect of chlorine clouds on slope surface is better when the injection source is on the slope section than flat section.Meanwhile,its controlling effect is better as the distance from the tank is shortened.The injection source set at or near the junction of the slope section and the flat section has a good suppression effect on the chlorine cloud behind the flat section.With the increase of the number of injection sources,the suppression of chlorine diffusion is enhanced.The research results provide a theoretical foundation for the emergency disposal of chlorine leakage and diffusion of liquid chlorine during highway transportation.

关 键 词：氯气泄漏 数值模拟 抑制扩散 水喷雾 离散相模型(DPM) 

分 类 号：X928.5[环境科学与工程—安全科学] TQ086[化学工程]