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[1]钟岸,周荣义,任竞舟,等.环氧乙烷储罐泄漏扩散中毒模拟研究[J].中国安全生产科学技术,2014,10(12):119-124.[doi:10.11731/j.issn.1673-193x.2014.12.020]
　ZHONG An,ZHOU Rong-yi,REN Jing-zhou,et al.Study on simulation of leakage, dispersion and poisoning accident of ethylene oxide tank[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(12):119-124.[doi:10.11731/j.issn.1673-193x.2014.12.020]
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环氧乙烷储罐泄漏扩散中毒模拟研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
10
期数:
2014年12期
页码:
119-124
栏目:
职业安全卫生管理与技术
出版日期:
2014-12-31

文章信息/Info

Title:
Study on simulation of leakage, dispersion and poisoning accident of ethylene oxide tank
作者:
钟岸1; 周荣义1; 2 ; 任竞舟1; 孔嘉莉1
（1．湖南科技大学 能源与安全工程学院，湖南 湘潭 411201； 2．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）
Author(s):
ZHONG An1;  ZHOU Rong-yi1; 2;  REN Jing-zhou1;  KONG Jia-li1
（1. School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China; 2. Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan Hunan
关键词:
环氧乙烷储罐; 泄漏扩散事故; FLUENT; 数值模拟; 泄漏速率; 自然风速; 地面粗糙度
Keywords:
ethylene oxide tank;  leakage and dispersion accident;  FLUENT;  numerical simulation;  leakage rate;  natural wind speed;  surface roughness
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2014.12.020
文献标志码:
A
摘要:
为研究环氧乙烷在不同因素影响下扩散规律及其毒性影响范围，以某厂环氧乙烷储罐泄漏事故为背景，对环氧乙烷泄漏扩散规律进行模拟分析。运用FLUENT软件，模拟环氧乙烷随泄漏速率、自然风速和地面粗糙度变化时的动态扩散变化规律。模拟结果表明：1）泄漏速率越快，毒害范围越大，并且在一定条件下，泄漏速率每增加25 kg/s，特别严重毒害范围（灰区）最远距离会在下风向增加60~80 m，比较严重毒害范围（黑区）最远距离会在下风向增加20~40 m；2）自然风速越快，灰区范围会变得越来越小，但黑区的毒害范围会扩散得更大，当风速为8 m/s时达到最大值，风速超过8 m/s时，风速的增加反而会使黑区范围变小；3）地面粗糙度越大，对环氧乙烷扩散的阻碍作用越大，黑区范围变小，但地面粗糙度大于4 m后，其对扩散作用的影响与4 m时近乎一致。研究结果对环氧乙烷储罐泄漏事故的预防，应急疏散和救援具有重要的指导意义。
Abstract:
In order to research the dispersion rule and toxic influence scope of ethylene oxide (EO) under different factors, taking the leakage accident of EO tank in a certain factory as background, the dynamic dispersion rules of EO under different leak rate, natural wind speed and surface roughness were simulated and analyzed by using FLUENT. The results showed that: 1) The quicker the leakage rate, the larger the toxic influence scope. Under certain conditions, when the leakage rate increases per 2.5 kg/s, the maximum distance of scope with very serious poison (grey area) increases 60 to 80 m, and that of scope with serious poison (black area) increases 20 to 40 m as well. 2) The faster the natural wind speed, the smaller the scope of grey area, and the larger the poison scope of black area. When the wind speed reaches 8 m/s, the black area is the largest. When the wind speed exceeds 8 m/s, the scope of black area becomes smaller with the increase of wind speed instead. 3) The higher the surface roughness, the smaller the scope of black area due to the higher the hindering effect. If surface roughness is larger than 4 m, the hindering effect is close to that of 4 m. The study is significant to prevention, emergency evacuation and rescue for leakage accident of EO tank.

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相似文献/References:

备注/Memo

备注/Memo:
湖南科技大学2013年研究生创新基金；教育部高等学校特色专业建设点项目（TS11624）； 国家自然科学基金项目（51274099）
更新日期/Last Update: 2014-12-30