Review of research progress on storage tank fire boilover phenomenon and its control technology
In order to deeply understand the mechanism of boilover in storage tank fires and develop its corresponding control technologies,through a systematic literature survey,two aspects of boilover phenomenon research progress and boilover control technology were analyzed.The research history of hot zone mechanism and the influencing factors of boilover were summa-rized,and the suppression measures were elaborated from the fire control technology and oil surface coverage control technolo-gy.The results show that the boilover phenomenon involves multiple interrelated factors,and the mechanism of hot zone forma-tion is a key point in the study of boilover mechanism.The visualization research can present the convective heat transfer be-havior of oil intuitively,thus enrich the theory of hot zone.There are many factors affecting boiover,and the prediction models of boilover time are mainly based on the fitting of initial oil layer thickness and diameter of storage tank,and the correction based on the classical heat wave theory and the nature of oil itself,while the applicability of the formula is low,and the under-standing of boilover is to be deepened.In addition,the boilover control technology needs to be perfected.At present,the boilover is mainly suppressed indirectly by preventing the occurrence of fire on the whole liquid surface,and the method of suppressing boilover directly by covering the oil surface is still immature.The research direction of boilover phenomenon and the development trend of control technology are as follows:continuous improvement of the research models related to boilover,supplement of large-scale experimental research,development of new covering materials,and improvement of fire-fighting techniques and tactics.The research results can provide some reference for the deep understanding of boilover phe-nomenon,the development of its control technology,and the improvement of fire fighting and rescue capability of storage tanks of relevant personnel.
storage tank fireboiloverhot zonecontrol technology
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