液化天然气储罐泄漏扩散模拟研究  

Simulation Study of Leakage Diffusion of LNG Tank

作　　者：杨磊 邹冀翼 寇丽颖 蔡亮 代学金 Yang Lei;Zou Jiyi;Kou Liying;Cai Liang;Dai Xuejin(Shanghai HOTO Engineering INC.,Shanghai,201203,China;China National Aviation Fuel Wenzhou Branch,Wenzhou,325000,China;Hebei Gas Storage Company of Huabei Petroleum Management Bureau Co.Ltd.,CNPC,Langfang,065000,China;CNAF Beijing-Tianjin-Hebei Logistics Transportation Co.Ltd.,Tianjin,300300,China;The Fifth Exploit Factory of PetroChina Qinghai Oilfield Company,Mangya,816400,China)

机构地区：[1]上海河图工程股份有限公司,上海201203 [2]中国航空油料有限责任公司温州分公司,浙江温州325000 [3]华北石油管理局有限公司河北储气库分公司,河北廊坊065000 [4]中航油京津冀物流有限公司,天津300300 [5]中国石油集团公司青海油田分公司采油五厂,青海茫崖816400

出　　处：《石油化工自动化》2021年第1期48-50,62,共4页Automation in Petro-chemical Industry

摘　　要：液化天然气(LNG)多为低温、低压储存,LNG储罐内存在酸性腐蚀环境,一旦泄漏容易引起大面积火灾。针对该问题,以LNG储罐为例,采用DNV Phast软件模拟泄漏扩散情况,分析不同工况条件下LNG的气体扩散、闪燃范围、喷射火危害、爆炸超压等。通过分析发现风向对蒸气云团的扩散有直接影响,研究结果可为LNG储气站的选址、站内布局和储罐泄漏应急处置提供理论依据和支撑。Liquefied natural gas(LNG) is stored under low-temperature and low-pressure normally. there is acidic corrosive environment in LNG storage tank. Large-scale fire will easily occur once there is leakage. Focusing on above problem, taking LNG storage tanks as an example, the DNV Phast software is adopted to simulate leakage and diffusion situation. The gas diffusion, flashover range, jet fire hazards, explosion overpressure, etc. of LNG under different working conditions are analyzed. It is found the wind direction has a direct impact on the diffusion of the vapor cloud through analysis. The research results can provide theoretical basis and support for the site selection, the layout and emergency disposal of storage tank leakage of LNG storage station.

关 键 词：液化天然气 泄漏 气体扩散 闪燃 喷射火 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]