Abstract: Abstract: The existing research has proved that due to the high volatility and high vapor pressure of low boiling point flammable liquids, it is difficult to extinguish the fire thoroughly. The main reasons for the difficulty of extinguishing fire are the poor sealing effect of foam layer, water film and gel film, and the fact that the oil sparging ability of fire extinguishing foam is not strong enough. This paper introduces the more mature technical means such as Heptafluoropropane foam technology, compressed air foam extinguishing technology and high performance foam extinguishing agent. It is pointed out that the future application of the fixed foam system in the storage tank, the development of the general foam extinguishing agent and the application technology on the fire field should be thoroughly explored so as to comprehensively solve the fire fighting problem of the low boiling point flammable liquid.

Key words: Key words: flammable liquid with low boiling point, fire fighting, extinguishing system, extinguishing agent