Super dry potassium potassium chloride as the base material for a fire extinguisher why not
There are many kinds of dry powder extinguishing agents, which can be broadly divided into three categories:Dry powder made from sodium bicarbonate (potassium) as a base; used in extinguishing flammable liquids, gases, and charged equipment fires;A dry powder made from phosphoric acid, three ammonium, diammonium hydrogen phosphate, two ammonium hydrogen phosphate and mixtures thereof, used for extinguishing flammable solid, flammable liquids, flammable gases, and charged equipment fires;A powder of sodium chloride, potassium chloride, barium chloride and sodium carbonate used as a base for extinguishing light metal fires.
Dry powder extinguishing agent is mainly composed of sodium bicarbonate and a small amount of moisture proofing agent, magnesium stearate and talcum powder. With a dry carbon dioxide or nitrogen for power, will be ejected from the container to form thousands of powder, powder spray into the combustion zone, the sodium bicarbonate powder under high temperature decomposition, the chemical reaction equation as follows: 2NaHC03, Na2C03 ten H20 ten C02The reaction is endothermic reaction, the reaction emits a large amount of carbon dioxide and water, water heated into water vapor, and absorb a large amount of heat energy, play a certain role in cooling and dilution of flammable gases.
There are three methods of extinguishing a fire smothering, a cooling fire, is also a fire fire extinguisher is isolated from dry asphyxia, the flame covered with air separation, fire extinguishers for fire extinguishing.
