Dry powder fire extinguisher is a fire extinguisher with chemical powder as extinguishing agent. Dry powder fire extinguisher is a kind of fire extinguisher which uses nitrogen as the driving force and sprays dry powder fire extinguishing agent into the cylinder to extinguish the fire. Dry powder fire extinguisher is equipped with dry powder extinguishing agent. In addition to the special dry powder chemical fire extinguishing agent for fighting metal fires, dry powder fire extinguishing agents are generally divided into BC dry powder fire extinguishing agent and ABC dry powder fire extinguishing agent.
Dry powder fire extinguishers can put out common combustible solid fires, as well as fires caused by burning oil and natural gas. It is mainly used to extinguish the initial fires of flammable liquids such as oil and organic solvents, flammable gases and electrical equipment. Dry powder fire extinguishers are widely used in oil fields, refineries, ships, shopping malls, markets, hotels, restaurants, hospitals, schools, entertainment places, oil depots, chemical plants, airports and industrial and mining enterprises.