内浮顶罐组油气泄漏扩散叠加效应的数值模拟与风洞实验研究  

Numerical simulation of oil vapor leakage and diffusion superposition effect of internal floating-roof tank group and experimental investigation on wind-tunnel

作　　者：黄维秋[1] 方洁 吕成[1] 吕爱华[1] 孙宪航 HUANG Weiqiu;FANG Jie;LYU Cheng;LYU Aihua;SUN Xianhang(Jiangsu Provincial Key Laboratory of Oil&Gas Storage and Transportation Technology,Changzhou University,Changzhou 213164,Jiangsu,China)

机构地区：[1]常州大学江苏省油气储运技术重点实验室

出　　处：《化工学报》2019年第11期4504-4516,共13页CIESC Journal

基　　金：国家自然科学基金项目(51574044);江苏省重点研发计划(产业前瞻与共性关键技术)重点项目(BE2018065);江苏省研究生科研创新计划项目(SJKY19_2198)

摘　　要：内浮顶罐的油气泄漏会给油罐区的安全和环境带来潜在的危害。基于CFD及其Realizable k-ε湍流模型,建立了内浮顶罐的风场和油气浓度场数值模拟方法,并通过风洞实验验证其可行性。之后,重点讨论单罐、双罐、四罐情况下的流场与浓度场分布。结果显示:紧贴浮盘边圈缝隙泄漏上方的油气浓度最高,容易产生火灾等危险;罐组之间存在相互影响作用,由于前方罐的阻挡作用,后方的罐内风速较小,容易产生油气叠加,导致油气浓度高于前方罐,更容易达到爆炸极限。无论从安全、环保还是人员健康方面,都应采取相应措施及时监控。Oil vapor leakage from the internal floating-roof tank will bring potential hazards to the safety and environment of the oil depot. Based on CFD and its Realizable k-ε turbulence model, the numerical simulation method of the wind field and the oil vapor concentration field of the internal floating-roof tank was established, and its feasibility was verified by the wind tunnel experiments. After that, focus on the flow field and concentration field distribution in the case of single tank, double tank and four tank. The results show that the greatest concentration of the oil vapor is found near the rim gap of the floating deck, which will be prone to fire and other dangers. There is interaction between tank groups. Because of the blocking effect of the front tank, the wind speed in the rear tank is smaller, which is easy to produce the oil vapor superposition, resulting in the concentration of the oil vapor in the rear tank is higher than that in the front tank, so it is easier to reach the explosion limit. Whether in terms of safety,environmental protection or personnel health, appropriate measures should be taken to timely monitor and control.

关 键 词：内浮顶罐 油气 风洞 数值模拟 扩散 计算流体力学 

分 类 号：X51[环境科学与工程—环境工程] TE85[石油与天然气工程—油气储运工程]