The protection of polar flammable liquid storage tanks from fire is an important matter related to the safe production of enterprises and to the safety of people’s lives and property. Although the foam fire-extinguishing system has long been the main means for the fire protection of flammable liquid storage tanks, the influence of the physical properties of polar flammable liquids on the fire-extinguishing characteristics of alcohol-resistant foams has not been well studied, which causes many problems for engineering design. In the present work, 14 kinds of polar flammable liquids were used to carry out non-ignition tests and alcohol-resistant foam fire-extinguishing tests. The results show that water-miscible and water-immiscible polar flammable liquids exhibit significant differences in their interactions with the alcohol-resistant foams under non-ignition conditions. A lower specific gravity and a higher heat of combustion of polar flammable liquids will result in a longer time needed for fire control, and a higher saturated vapor pressure of polar flammable liquids will result in a longer time needed to extinguish the edge fire. In addition, the tests show that the forceful application of alcohol-resistant foams is not conducive to extinguishing fires involving polar flammable liquids and cannot even control the fires.

中文翻译：

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耐醇灭火泡沫对极性易燃液体火灾的灭火性能

极地易燃液体储罐的火灾防护，是关系企业安全生产和人民群众生命财产安全的重要事项。虽然泡沫灭火系统长期以来一直是易燃液体储罐防火的主要手段，但极性易燃液体的物理性质对耐醇泡沫灭火特性的影响尚未得到很好的研究，这给工程设计带来了很多问题。在目前的工作中，使用14种极性易燃液体进行了不燃性试验和抗溶性泡沫灭火试验。结果表明，水混溶和水不混溶的极性易燃液体在非点火条件下与耐醇泡沫的相互作用表现出显着差异。极性可燃液体比重越低，燃烧热越大，灭火所需时间越长，极性可燃液体饱和蒸气压越高，边缘火扑灭时间越长。此外，试验表明，强行使用抗溶性泡沫不利于扑灭极性易燃液体火灾，甚至无法控制火势。极性易燃液体较高的饱和蒸气压将导致熄灭边缘火灾所需的时间更长。此外，试验表明，强行使用抗溶性泡沫不利于扑灭极性易燃液体火灾，甚至无法控制火势。极性易燃液体较高的饱和蒸气压将导致熄灭边缘火灾所需的时间更长。此外，试验表明，强行使用抗溶性泡沫不利于扑灭极性易燃液体火灾，甚至无法控制火势。