MTG工艺危险后果模型改进和泡沫消防适应性研究

发布时间：2017-12-31 08:12

  本文关键词：MTG工艺危险后果模型改进和泡沫消防适应性研究　出处：《西南石油大学》2016年硕士论文　论文类型：学位论文

  更多相关文章： MTG工艺 半球形扩散模型 喷射火 蒸气云爆炸 储罐爆炸模型 池火灾 BLEVE火球 碎片冲击 氮气泡沫

【摘要】：甲醇制汽油(MTG)工艺由于具有产品质量好、经济效益高、环保等优势,受到了广泛关注,但其固有的危险特性又限制了MTG的发展。本文以MTG工艺和装置的泄漏、火灾和爆炸等危险性为研究对象,对事故后果进行模拟。模拟过程中,从理论上改进了泄漏、液池、蒸发和扩散模型；喷射火模型；蒸气云爆炸冲击波超压和热辐射模型；储罐化学爆炸和物理爆炸模型；池火灾模型；BLEVE沸腾液体扩展蒸气云爆炸模型；碎片冲击模型。通过模拟,改进后的模型对评估事故后果和指导消防设计具有重要意义。在模拟事故后果伤害的基础上,本文探讨了空气泡沫消防的缺陷,提出在大型储罐和厂区运用氮气鼓泡泡沫工艺。初步设计氮气泡沫灭火系统和氮气泡沫喷雾灭火系统。对MTG全厂的消防系统进行方案设计,包括空分制氮；氮在管内的流动；MTG氮气鼓泡泡沫灭火系统；LPG球罐氮气泡沫喷雾灭火装置；全厂消防冷却水系统。进行全厂的泡沫消防系统、消防冷却水系统详细设计和水力计算,以及事故排水系统和消防报警系统设计通过消防设计可知,氮气鼓泡泡沫灭火系统和氮气鼓泡喷雾灭火系统在大型储罐上具有理论可行性和安全保障性。对于整个厂区,利用空分制氮可满足消防灭火时的氮气需要。文章设计了消防的不同组合形式,为厂区的消防提供了多种设计选择,可同时保障经济性和使用安全性。
[Abstract]:Because of the advantages of good product quality, high economic benefit and environmental protection, the methanol gasoline making MTG process has received extensive attention. However, its inherent hazard characteristics limit the development of MTG. In this paper, the leakage, fire and explosion of MTG process and device are studied, and the accident consequences are simulated. The model of leakage, liquid tank, evaporation and diffusion is improved theoretically. Jet fire model; Shock wave overpressure and thermal radiation model of vapor cloud explosion; Model of chemical explosion and physical explosion of storage tank; Pool fire model; BLEVE boiling liquid expanded vapor cloud explosion model; Debris impact model. Through simulation, the improved model is of great significance for evaluating accident consequences and guiding fire protection design. Based on the simulation of accident consequence damage, this paper discusses the defects of air foam fire fighting. This paper puts forward the application of nitrogen bubble foam technology in large storage tanks and plant areas. The preliminary design of nitrogen foam fire extinguishing system and nitrogen foam spray fire extinguishing system is carried out. The scheme design of the fire fighting system of MTG plant includes nitrogen production by air separation. The flow of nitrogen in the tube; MTG nitrogen bubble foam fire extinguishing system; LPG spherical tank nitrogen foam spray extinguishing device; The detailed design and hydraulic calculation of the fire fighting cooling water system, as well as the design of the accident drainage system and the fire alarm system are known through the fire control design. The nitrogen bubble foam fire extinguishing system and the nitrogen bubble spray fire extinguishing system are theoretically feasible and safe in large storage tanks. Nitrogen production by air separation can meet the needs of nitrogen in fire extinguishing. Different combination forms of fire fighting are designed in this paper, which can provide various design options for fire fighting in factory area, and can guarantee both economy and safety in use at the same time.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TQ517;TQ086
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本文编号：1358919