Fluoroprotein foam fire extinguishing agent is a kind of foam fire extinguishing agent developed in the 1960 s to overcome the shortcomings of protein foam fire extinguishing agent. It is based on protein foam fire extinguishing agent as the base material, with the right amount of "6201" prefabricated liquid made. The 6% type fluorine protein foam fire extinguishing agent contains 1% "6201 preformed liquid, and the 3% type fluorine protein foam fire extinguishing agent contains 2%" 6201 "preformed liquid.

The fire extinguishing principle of fluoroprotein foam fire extinguishing agent is basically the same as that of protein foam fire extinguishing agent, but due to the effect of fluorocarbon surfactant, its fire extinguishing performance is greatly improved. Compared with protein foam fire extinguishing agent, fluorine protein foam fire extinguishing agent has the following characteristics:

The surface tension and interfacial tension are significantly reduced; the foam has good fluidity and fast fire extinguishing speed; fluorine foam has strong anti-oil pollution ability, and can extinguish large oil tank fires by spraying under the liquid. Can be combined with dry powder. Therefore, fluorine protein foam fire extinguishing agent is widely used in large oil depot fire extinguishing.

Application of Fluoroprotein Foam Fire Extinguishing Agent in Underwater Spray

General oil storage tanks are relatively high, large amount of oil. After the fire, the temperature is high, the fire is fierce, the radiation heat is strong, it is easy to burn, and even continuous explosion, boiling spills, tank deformation, collapse, etc. People, vehicles and equipment are difficult to approach, and fire fighting is extremely difficult. The danger is self-evident. In this case, the foam fire extinguishing system attached to the oil tank can control the fire in the initial stage and prevent it from spreading and expanding. Therefore, the submerged foam injection system is more reliable. Because the underwater foam spray fire extinguishing system directly injects the foam into the oil from the lower part of the tank through the pipeline, it floats up under the buoyancy of the oil and covers the liquid surface of the burning oil to achieve the purpose of fire extinguishing. The main problem to be solved by the liquid spray is how to prevent the foam from entraining too much oil to become combustible foam and lose the fire extinguishing ability.

Reasonable design of foam foaming multiple

Fluoroprotein foam due to the fluorocarbon surfactant molecules in the fluorocarbon chain both hydrophobic, but also hydrophobic, so that it in the foam and oil at the interface of the formation of water film, but also the oil droplets wrapped in the foam, to prevent the evaporation of oil, reduce the combustion of oily foam. It is determined that the fluorine protein foam can burn freely only when the gasoline content is as high as 17%. In order to control the oil content of the foam within the non-combustion concentration and consider its comprehensive fire extinguishing effect, the foam foaming ratio should be controlled at about 3 times.

Reasonable control of the rate of foam entry into the oil

The speed of entering the foam oil is an important technical parameter. It can be seen from the test that the oil content in the foam increases with the increase of the speed. This is because as the flow rate increases, the 'turbulence' in the oil becomes greater, resulting in an increase in the oil content of the foam. In order to reduce the oil content of the foam and ensure the fire extinguishing effect, it is necessary to limit the speed of foam entry.