小尺度沸溢油池火灾燃烧速率特性试验研究

发布时间：2018-03-28 05:08

本文选题：沸溢油池火灾　切入点：燃烧速率　出处：《中国石油大学学报(自然科学版)》2017年03期

【摘要】：使用胜利原油对小尺度沸溢火灾燃烧速率特性进行了试验研究。分别记录了直径为0.1、0.15、0.2 m的原油沸溢油池火灾的燃烧过程,测量了燃烧速率和温度随时间的变化。根据燃烧速率和火焰高度变化对沸溢火灾燃烧进行阶段划分。探讨了不同直径及初始油层厚度对沸溢火灾燃烧速率的影响,在燃烧速率基础上建立沸溢强度模型。结果表明:沸溢火灾燃烧可以分为预燃、准稳态燃烧、沸溢燃烧、火焰熄灭4个典型燃烧阶段;沸溢燃烧阶段的燃烧速率和火焰高度显著大于准稳态燃烧阶段;沸溢火灾各阶段燃烧速率均随油池直径的增大而增大,且沸溢燃烧阶段的增幅明显大于准稳态燃烧阶段的增幅;准稳态燃烧阶段的稳定燃烧速率与初始油层厚度无关,随油池直径的增大而增大;沸溢强度随初始油层厚度的增加及油池直径的减小而增大,并与初始油层厚度和油池直径间的比值成正比。
[Abstract]:The combustion rate characteristics of small scale boiling oil spill fire were studied by using Shengli crude oil, and the combustion process of the oil boiling oil spill tank with the diameter of 0.1g 0.150.2m was recorded respectively. The changes of combustion rate and temperature with time were measured. According to the change of combustion rate and flame height, the combustion stages of boiling overflow fire were divided. The effects of different diameters and initial oil layer thickness on the combustion rate of boiling overflow fire were discussed. Based on the combustion rate, the boiling overflow intensity model is established. The results show that the fire combustion can be divided into four typical combustion stages: precombustion, quasi-steady combustion, boiling overflow combustion and flame extinguishing. The combustion rate and flame height of boiling overflow combustion stage are significantly higher than that of quasi-steady combustion stage, and the combustion rate increases with the increase of oil pool diameter, and the increase of boiling overflow combustion stage is obviously larger than that of quasi-steady state combustion stage. The steady combustion rate in the quasi-steady combustion stage is independent of the initial reservoir thickness, but increases with the increase of the oil pool diameter, and the boiling overflow intensity increases with the increase of the initial reservoir thickness and the decrease of the oil pool diameter. It is proportional to the ratio between the initial reservoir thickness and the oil pool diameter.
【作者单位】：中国石油大学海洋油气装备与安全技术研究中心;合肥工业大学土木与水利工程学院;中国石油大学化学工程学院;
【基金】：国家自然基金青年项目(51504282) 博士后面上项目(2014M560592) 中央高校基本科研业务经费项目(16CX02045A) 中国石油大学(华东)研究生创新工程资助项目(YCXJ2016064)
【分类号】：TE88

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