Characteristics of Aqueous Film Forming Foam Fire Extinguishing Agent

During the fire extinguishing process, the aqueous film-forming foam extinguishing agent forms a water film with good sealing performance, fast fluidity, good oil repellency and high strength on the fuel surface by the water precipitated from the water-forming foam layer. It can isolate the contact between fuel and air, control the occurrence of steam, isolate suffocation through foam and protective film, quickly and effectively extinguish oil fires, and improve on-site fire extinguishing efficiency.

It can be mixed with fresh water or sea water at a ratio of 3:97 or 6:94. It is a water film foam extinguishing agent with high fire extinguishing efficiency and fast fire extinguishing speed. Its notable features are non-toxic, no pollution, no corrosion, fast foaming, long storage period, good stability, anti-reburning, good sealing performance, and cost-effective than other similar fire extinguishing agents.

Based on synthetic surfactants, foam extinguishing agents with foaming ratios of hundreds or even thousands of times are called aqueous film-forming foam extinguishing agents. It is suitable for high-expansion foam generator, which produces a large amount of foam to quickly cover the burning object or fill the protected space, and has the dual effects of suffocation and cooling to extinguish the fire.

Aqueous film-forming foam fire extinguishing agent is widely used in underground tunnels, airports, underground oil depots, garages, ships, coal mines and other limited space fire prevention and fire extinguishing, for large areas of water-soluble flammable, flammable liquid coverage, can play its role.

Characteristics and fire extinguishing characteristics of aqueous film forming foam extinguishing agent:

(1) Fire extinguishing agent characteristics: large bubble diameter, high foaming rate, large foaming volume, can quickly fill the fire space, isolate the combustion from the air, and suffocate the flame.

(2) The main characteristics of fire extinguishing: high fire extinguishing intensity and fast speed: small water damage, easy to resume work; low cost: non-toxic and non-corrosive.

Aqueous film-forming foam fire extinguishing agent is an effective low-expansion foam fire extinguishing equipment. The fixed fire hydrant box and aqueous film-forming foam are effectively combined to extinguish the fire. The principle is that when the water pressure passes through the sensor, the ratio of water and foam can be automatically mixed according to the rules., Generate a foam gun and spray foam, save organic solids, liquids, and solid fires. It is particularly effective in extinguishing petroleum fires.

It is mainly composed of casing, hose drum, foam liquid container, negative pressure proportioning device, bubble gun, guide frame and pipeline. When 3% aqueous film foam extinguishing agent is canned, the aqueous film foam is applied to the surface of burning liquid, and a layer of hydrocarbon can be rapidly formed on the surface to control the evaporation of water film and play an effective dual role in the rapid fire extinguishing of foam and water. Control the burning speed is fast, not easy to reignite; the fire extinguishing effect is high, it is 2 to 3 times that of ordinary protein and fluorine protein foam, and the storage time can reach 12 years.