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[1]李冬,陶刚,张礼敬,等.氧气瓶内附油脂充氧过程爆炸分析与计算[J].中国安全生产科学技术,2011,7(4):18-23.
　LI Dong,TAO Gang,ZHANG Li-jing,et al.Analysis and calculation on filling process explosion of oxygen cylinder containing oil[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2011,7(4):18-23.
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氧气瓶内附油脂充氧过程爆炸分析与计算()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
7
期数:
2011年4期
页码:
18-23
栏目:
学术论著
出版日期:
2011-04-30

文章信息/Info

Title:
Analysis and calculation on filling process explosion of oxygen cylinder containing oil
文章编号:
1673-193X(2011)-04-0018-06
作者:
李冬; 陶刚; 张礼敬; 张晶晶
南京工业大学城市建设与安全工程学院，南京? 210009
Author(s):
LI Dong;  TAO Gang;  ZHANG Li-jing;  ZHANG Jing-jing
College of Urban Construction and Safety Engineering, Nanjing University of Technology, Nanjing? 210009, China
关键词:
气瓶; 爆炸; 充氧过程; 油脂; 氧化自燃; 最小油脂量
Keywords:
cylinder;  explosion;  oxygenation process;  oil;  spontaneous combustion;  minimum oil amount
分类号:
X937
DOI:
-
文献标志码:
A
摘要:
分析总结了氧气钢瓶物理爆炸和化学爆炸的原因。针对2009年某市发生的一起氧气瓶内含油脂爆炸事故,系统分析了国内曾经发生的几次因油脂导致气瓶爆炸事故。油脂进入到氧气瓶内大都是由于误操作。油脂与高压纯氧接触会发生剧烈的自燃氧化放热,使瓶内的氧气迅速升温升压,超出气瓶承压极限导致爆炸破裂。分析比较发现由油脂导致的气瓶爆炸,其破坏程度不如混入可燃气体导致的气瓶爆炸剧烈,一般不是粉碎性爆炸。在正常的充氧过程中,氧气瓶温度会升高,采用变质量热力学中的方法,计算说明气瓶在充装过程中氧气温度的具体变化。充氧温度计算为充氧工作人员提供参考,如发现异常情况,可以及时地控制和预防。由现场压力表可知氧气瓶在充装至12MPa时发生爆炸,而氧气瓶最小爆炸压力为37.6MPa,油脂燃烧放热,计算可知致使钢瓶爆炸破裂所需要的最小油脂量,为66.4-79.6g。不同的充装压力下发生爆炸,所需要的最小油脂量不同,充装压力越高,爆炸所需要的最小油脂量越少。
Abstract:
The physical and chemical causes of oxygen cylinders explosion are analyzed and summarized. Explosion of oxygen cylinder containing oil occurred in 2009 in Nanjing and several domestic similar accidents were comprehensively analyzed. Filling oil into oxygen cylinder was due to misuse, and oxygen carbon tetrachloride is not used to remove oil in accordance with the relevant national standards before filling. Violent oxidation exothermic reaction occurred when oil was exposed to pure high pressure oxygen. And instantaneous releasing of heat produced high temperature and high pressure in gas cylinder, which was beyond its limits and caused burst. Generally, cylinder explosions caused by oil, not as violent as mixed combustible gas cylinder explosion, were not crushing explosion. Temperature would increase in normal filling oxygen, and detailed change of oxygen temperature in the filling process was calculated by thermodynamics of variable quality. The internal oxygen temperature was 53℃ when it was charged to maximum pressure 14.7MPa and the outer wall temperature was below 53℃ because of the heat capacity of cylinder. The unusual circumstances were controlled and prevented timely if oxygenation temperature was provided as a reference. Pressure gauge shows that cylinder explosion occurred while oxygen cylinder is charged to 12.0MPa; the minimum explosion pressure of oxygen cylinder is 37.6MPa; oxygen pressure increases from 12.0MPa to 37.6MPa by oil oxidation combustion. Moreover, inverse calculation shows that minimum oil amount leading to burst of cylinder is between 66.4g and 79.6g; minimum oil amount leading to burst of cylinder decreases as the increasing of filling pressure

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备注/Memo

备注/Memo:
收稿日期：2010-11-19
通讯作者：陶刚，副教授。
基金项目：国家863项目（编号：2007AA06A402）
更新日期/Last Update: