Protein foam fire extinguishing agent is a foaming liquid composed of the hydrolysate of animal protein or vegetable protein,and adding stabilizer,antifreeze,corrosion inhibitor,preservative,viscosity control agent and other additives to make a foaming concentrated liquid.It is one of the more suitable fire extinguishing agents for fighting crude oil and petroleum product fires.

　　Protein foam fire extinguishing agent is composed of animal protein,such as cow,horse,sheep,pig hoof,hairy blood or vegetable protein such as bean cake,rapeseed cake,etc.,in the role of alkaline(sodium hydroxide or calcium hydroxide)After being partially hydrolyzed,it is then processed and concentrated.Protein foam liquid is divided into 6%and 3%according to the mixing ratio of water,and divided into animal protein and vegetable protein according to the manufacturing raw materials.

　　Because protein foam has better adhesion and covering effects,but also has certain cooling and wetting effects,so it is suitable for fighting general solid material fires.Because protein foam has good stability,it is often used to prevent the occurrence and spread of fires.For example,when petroleum products in oil pipelines and oil tanks leak or overflow,they can be covered with protein foam to prevent fires before taking other measures..In the oil tank area,when an oil tank is on fire,protein foam can be sprayed to protect other oil tanks near the fire tank to prevent the heat radiation of the fire tank from igniting.

　　Protein foam fire extinguishing agents cannot be used to extinguish water-soluble flammable liquid fires such as alcohol,aldehyde,ether,etc.,because polar liquids have a strong defoaming effect,nor can they be used to extinguish alcoholic gasoline,electrical,gas and other fires,and cannot be used under liquid.The spray method is used to fight the oil tank fire and cannot be used in combination with general dry powder fire extinguishing agents.