Precautions for the use of fluorine protein foam fire extinguishing agent

Fluoroprotein foam fire extinguishing agent is to add fluorocarbon and hydrocarbon surfactant in protein foam liquid. The addition of fluorocarbon surfactant reduces the surface tension and interfacial tension of the foam premix, and improves its thermal stability, wettability and fluidity. Fluoroprotein foam fire extinguishing agent has good surface activity, high thermal stability, good wettability and fluidity, and is suitable for underwater spray fire extinguishing. When the foam passes through the oil layer, the oil cannot diffuse into the foam, and even if the gasoline content in the foam is as high as 25%, it will not burn. As an improved protein foam fire extinguishing agent, it can effectively increase the fire extinguishing speed and can be operated with dehydrated fine particles. Its price is slightly higher than ordinary protein foam, but it is not suitable for extinguishing organic solvent fires.

1. Mechanical impact should be minimized. Due to strong mechanical impact, a large amount of foam will burst, thereby destroying the foam. Therefore, when spraying foam, the foam should be sprayed directly onto the tank wall or other objects instead of hitting the oil surface. It should be sprayed onto the oil surface along the tank wall as much as possible to minimize the damage caused by the mechanical action of the foam. 2. should try to avoid high temperature damage. Since high temperature will cause certain damage to the foam, when spraying the foam, try to avoid excessive foam flowing through the high temperature tank wall to avoid flames. 3. Try to speed up the flow. Operation foam fire extinguishing is mainly covered by the flow of the foam itself, so as to achieve fire extinguishing color. In order to speed up the flow of the foam, the spray gun can be waved properly to make the foam fire better.

A large number of fire extinguishing tests show that reasonable selection of two or more fire extinguishing agents for joint fire extinguishing can combine their respective advantages and is better than operating one fire extinguishing agent alone. Fluoroprotein foam fire extinguishing agent and dehydrated fine particle fire extinguishing agent combined extinguishing oil tank fire technology is a fast, reliable and effective fire extinguishing method for large-scale oil fires, which can reduce fire losses to a limited extent and obtain social and economic benefits. The combination of fluorine protein foam and dehydrated fine particle fire extinguishing technology can not only give full play to the advantages of foam fire extinguishing and dehydrated fine particle fire extinguishing quickly, but also overcome the shortcomings of foam fire extinguishing slowly and dehydrated fine particle fire extinguishing easily, so as to achieve better fire extinguishing quality. This is because the surface tension of the fluorine protein foam is lower than the surface tension of the fuel, which can not only resist the rupture caused by the fuel, but also resist the pollution and destruction of dehydrated fine particles, so that the fire extinguishing color can be achieved.

Of course, when the fluoroprotein foam and dehydrated fine particles are combined and operated, only a better combination can give full play to the respective advantages of the fire extinguishing agent and achieve better fire extinguishing quality. When the foam and dehydrated fines are sprayed at the same time, the fire extinguishing color is not ideal, which may be caused by the foam and dehydrated fines interfering with each other as they pass through the flame zone. When a certain fire extinguishing agent is operated for a period of time and then sprayed at the same time, the color is better than the fluorine protein foam. The test shows that in the case of the fire is basically controlled in half, the foam is sprayed for 5 seconds, and the foam and dehydrated fine particles are sprayed at the same time, and the color can be achieved. This combined approach achieves the goal of operating a small amount of extinguishing agent to extinguish a fire.