Safety Life Cheaper Option Fire Extinguisher Powder Used in Classroom

The barrel of portable dry powder fire extinguisher is made of high-quality carbon steel through special processing. This series of fire extinguishers has the advantages of simple structure, flexible operation, wide application, convenient use and low price. The fire extinguisher is mainly composed of cylinder, bottle head valve, spray hose (nozzle), etc. The fire extinguishing agent is sodium bicarbonate (ABC type is ammonium phosphate), the driving gas is carbon dioxide, and its working pressure is 1.5MPa at normal temperature. The wheeled dry powder fire extinguisher is mainly composed of cylinder, head assembly, nozzle assembly, frame assembly, etc. The fire extinguishing agent is sodium bicarbonate (ABC type is ammonium phosphate) dry powder fire extinguishing agent, the driving gas is nitrogen, and its working pressure is 1.5MPa at normal temperature.

The total specific surface area of quantitative dry powder is small, the mass of single particle is large, the sedimentation rate is fast, and the decomposition rate is slow when heated, resulting in its low ability to capture free radicals, so the fire extinguishing ability is limited, which limits the use range of dry powder fire extinguishing agent to a certain extent. The particle size of dry powder fire extinguishing agent is directly related to its fire extinguishing efficiency. The larger the critical particle size of the fire extinguishing component, the better the fire extinguishing effect. Therefore, it is an effective way to improve the fire extinguishing efficiency of dry powder fire extinguishing agent to prepare ultrafine fire extinguishing powder that can be uniformly dispersed and suspended in the fire space, ensure the activity of fire extinguishing component particles, and reduce the amount of fire extinguishing agent used per unit space.