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过程工程学报 ›› 2021, Vol. 21 ›› Issue (6): 731-740.DOI: 10.12034/j.issn.1009-606X.220171

• 过程系统集成与化工安全 • 上一篇    

液氨卧罐液体实时连续泄漏建模及分析

何娟霞1,2*， 周冬梅1， 刘 磊1， 周琪勇1， 黄丽文1， 姚健庭1   

  1. 1. 广西大学资源环境与材料学院，广西 南宁 530004 2. 华南理工大学材料科学与工程学院，广东 广州 510641
  • 收稿日期:2020-06-04 修回日期:2020-07-04 出版日期:2021-06-28 发布日期:2021-06-28
  • 通讯作者: 何娟霞 hejuanxia2005@126.com
  • 基金资助:
    2016年度广西科技厅重点研发计划

Modeling and analysis of liquid real-time continuous leakage in horizontal liquid ammonia tank

Juanxia HE1,2*,  Dongmei ZHOU1,  Lei LIU1,  Qiyong ZHOU1,  Liwen HUANG1,  Jianting YAO1   

  1. 1. College of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China 2. College of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510641, China
  • Received:2020-06-04 Revised:2020-07-04 Online:2021-06-28 Published:2021-06-28

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摘要： 基于范德瓦耳斯方程和流体力学理论，考虑液氨卧罐泄漏时罐压和液面面积变化，建立了液氨卧罐液体实时连续泄漏模型。利用模型对某制冷企业液氨卧罐进行数学模拟，并将计算结果与PHAST模拟结果进行对比分析。结果表明，液面高度h下降幅度先减缓后变大，液体泄漏质量流率Qm和泄漏孔处液体泄漏速率v的下降幅度及泄漏液体质量m的增加幅度逐渐减缓。泄漏开始时，Qm和v值最大；泄漏停止时，m值最大。泄漏孔径为5, 30和100 mm时，泄漏时间t为29884.027, 837.289和77.550 s，Qm(max)为0.552, 19.913和221.160 kg/s，v(max)为46.733 m/s，m(max)为10255.649, 10339.923和10572.760 kg。模型计算结果与PHAST模拟结果偏差小于24%，从参数变化规律和风险应急分析，模型对液氨卧罐液体泄漏理论计算具有一定适用性。

关键词: 范德瓦耳斯方程, 液氨卧罐, 连续泄漏, 模型, 数学模拟

Abstract: Based on Van der Waals equation and theory of fluid mechanics, the liquid real-time continuous leakage model of horizontal liquid ammonia tank was established considering the changes of tank pressure and liquid surface area. Mathematical modeling of a horizontal liquid ammonia tank in a refrigeration company was performed by this model, and the calculation results were compared with PHAST simulation results. The results showed that the decreasing range of liquid level height h grew slowly and then increased quickly, the decreasing range of liquid leakage mass flow rate Qm and liquid leakage rate v and the increasing range of liquid leakage mass m decrease slowly. At the beginning of leakage, Qm and v were the maximum values, at the end of leakage, m was the maximum values. When the diameters of leakage hole were 5, 30 and 100 mm, leakage time t were 29884.027, 837.289, 77.550 s, Qm(max) were 0.552, 19.913 and 221.160 kg/s, v (max) was 46.733 m/s, m(max) were 10255.649, 10339.923 and 10572.760 kg, respectively. The deviation between the calculation results of the model and the PHAST simulation results was less than 24%. From the analysis of parameter variation and risk emergency, the model had the certain applicability for the theoretical calculation of liquid leakage in horizontal liquid ammonia tank.

Key words: Van der Waals equation, horizontal liquid ammonia tank, continuous leakage, model, mathematical modeling