How many years is the service life of aqueous film foam extinguishing agent?

Aqueous film-forming foam fire extinguishing agent is composed of hydrocarbon surfactant, fluorocarbon surfactant, anti-drying agent, auxiliary agent, polar film-forming agent, stabilizer, antifreeze, preservative, foaming agent, etc.

The aqueous film-forming foam extinguishing agent can be divided into 3 � FF/AR (foam extinguishing agent 3: water 97) and 6 � FF/AR (foam extinguishing agent 6: water 94) according to the mixing ratio after mixing with water volume. Shelf life is 8 years. Due to its small specific gravity and good fluidity, it can be transported to a certain height or far away to extinguish the fire under the action of the air flow that produces the foam. Because when the oil tank is on fire, the upward flow of the oil tank has a large lift, and the proportion of foam is very small, which cannot cover the oil surface, so high expansion foam fire extinguishing agent cannot be used to extinguish the oil tank fire: but for a small amount of water-soluble flammable stored indoors Liquid can sometimes be completely submerged and extinguished. When using high-expansion foam to extinguish fire, it is necessary to prevent the gas entering the high-expansion foam generator from containing combustion gas, smoke and acid gas to avoid damage to the foam.

Aqueous film foam fire extinguishing agent spray on the burning oil or polar solvent, bubbles can quickly flow in the polar solvent oil or surface dispersion and diffusion to the area has not been directly sprayed, and in the polar solvent oil or well water surface to form a layer of sealing film, and oil or polar solvent and air contact isolation. The anti-solvent component in the foam can effectively prevent the water-soluble solvent from absorbing the moisture in the foam, thereby protecting the foam. The double fire extinguishing effect of foam and protective film improves the fire extinguishing efficiency on site.

Mainly used for alcohol, ether, aldehyde, ketone and other water-soluble substances such as fire fighting, as well as petroleum and petroleum products and other water-soluble substances fire fighting. The water-based film-forming foam fire extinguishing agent is mainly suitable for water-insoluble combustibles, flammable liquids, fire sources and general solid materials, such as fire sources flowing out of tanks or combustible sources leaking from rotating machinery in fire dikes, etc.), as well as fires in limited spaces such as warehouses, hangars, basements, tunnels, mines, ships, etc. When the liquefied natural gas and other low-temperature liquid storage tank leaks, high-expansion foam can also be used to prevent steam volatilization and fire.

When a fire occurs, press the spring lock on the door according to the opening mode of the door to automatically pin it out. When the door is opened, remove the nozzle and pull out the hose plate, pull out the hose, and connect the hose and the fire hydrant interface at the same time. Pull the power switch at the kilometer of the outer casing of the wall, and unscrew the screw of the indoor fire hydrant handwheel in the opening direction to complete the sprinkler.

Aqueous film-forming foam fire extinguishing agent, can spray a wide range of foam, suitable for extinguishing complex initial fires, general road tunnels are widely used, but also suitable for high-rise, large buildings, factories, warehouses, ships and various public places of the necessary fixed fire equipment.