摘要
通过对两种主要的事故形式——高含硫天然气泄漏导致的硫化氢中毒和气体爆炸事故的研究,利用HYSYS软件模拟管网运行条件下的各种临界参数条件,估计最大潜在物质量和最坏的后果。通过实例,利用Pasquill-Gifford模型计算最大可能的H2S浓度、利用等效TNT方法估计最坏的爆炸后果,进而得到死亡和破坏概率曲线,提出设计阶段基于本质安全的改进结论。结果表明:可早在高含硫天然气管道过程设计阶段就提出改进建议,使人员、财产和设备得到保护;中毒风险应通过快速关断阀门设置和划分应急区消减,通过管道和设备优化布局则可有效降低气体爆炸风险。
Two main types of risks-hydrogen sulfide toxicity and gas explosion high-sulfur natural gas were studied through HYSYS simulative software. The high-sulfur natural gas mated. The maximum pipeline process, the most concentration of H2S and potential amount and the the worse effect caused caused by the leakage of critical parameters of the worst consequences were estiby explosion were calculated through respectively using Pasquill-Gifford model and TNT equivalence method. Thus, the probability curves based on death and destruction were obtained. It is concluded that improved measures based on inherent safety should be taken during the design stage of high-sulfur natural gas pipeline ; the risk of toxicosis could be decreased by means of setting quick closing valves and emergency zones, the risk of gas explosion could be reduced by optimizing the layout of installations and pipeline.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2009年第2期16-20,共5页
China Safety Science Journal
基金
国家科技重大专项课题“高含硫气藏高效安全开发技术”(2008ZX05017)
关键词
高含硫天然气
管道
本质安全
爆炸
中毒
high-sulfur natural gas
pipeline
inherent safety
explosion
toxicosis
