氨站罐体液氨泄漏扩散模拟分析  

Simulation Analysis of Liquid Ammonia Leakage and Diffusion in Large-scale Ammonia Storage Tanks

作　　者：周蕊 冯汉升 ZHOU Rui;FENG Han-Sheng(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]合肥综合性国家科学中心能源研究院,安徽合肥230001

出　　处：《山东工业技术》2025年第1期3-10,共8页Journal of Shandong Industrial Technology

基　　金：国家重点研发计划项目(2023YFB4005700)。

摘　　要：为指导掺氨燃烧供氨区监测预警装置的设计,本文采用计算流体动力学(CFD)技术对铜陵电厂现存的供氨系统进行氨泄漏扩散模拟,系统研究了风速、质量流率、泄漏位置、多泄漏孔、围堰等因素对氨泄漏扩散区域的影响。结果表明,随着风速的增加,氨气在水平方向上的扩散从40.5 m降到33 m,垂直方向的扩散从13 m降到6.5 m以下。增加氨气的质量流率和泄漏孔的数量意味着单位时间内释放的氨气量增加,进而加剧了氨气的扩散强度,扩大了扩散区域。当储罐上方泄漏时,垂直扩散距离超过6.5 m,储罐下部泄漏时,水平扩散距离超过40.5 m。围堰的存在通过物理隔离作用,限制了氨气的扩散路径,缩短了氨气在近地面水平方向的扩散距离。To guide the design of an ammonia leakage monitoring and early warning system for ammonia injection combustion areas,Computational Fluid Dynamics(CFD)technology was used to simulate ammonia leakage diffusion in the existing ammonia supply system of the Tongling Power Plant.Factors such as wind speed,mass flow rate,leakage location,multiple leakage points,and containment dikes were systematically investigated to assess their impact on the ammonia diffusion area.The results show that with an increase in wind speed,the horizontal diffusion of ammonia decreases from 40.5 m to 33 m,while the vertical diffusion decreases from 13 m to below 6.5 m.Increasing the ammonia mass flow rate and the number of leakage points results in a higher release of ammonia per unit time,which intensifies the diffusion strength and enlarges the diffusion area.When leakage occurs above the storage tank,the vertical diffusion distance exceeds 6.5 m;when leakage occurs below the tank,the horizontal diffusion distance exceeds 40.5 m.The presence of the containment dike physically isolates the diffusion path of ammonia,shortening the horizontal diffusion distance near the ground.

关 键 词：掺氨燃烧 液氨储罐 氨泄漏 数值模拟 FLUENT 

分 类 号：X507[环境科学与工程—环境工程]