The difference between dry powder fire extinguisher and 1211 fire extinguisher
Dry powder fire extinguishing agent is divided into BC powder extinguishing agent (sodium bicarbonate) and ABC powder (ammonium phosphate) two categories. One is to rely on the inorganic salt powder volatile decomposition products, chemical inhibition and side catalysis and fuel combustion in the process of free radicals or reactive groups, the chain reaction of combustion interruption the two is on fire; combustible surface by dry powder, chemical reaction, and the formation of a layer of high temperature glass layer to isolate oxygen, and suffocate the fire. In addition, there are some oxygen dilution and cooling effect.
1211 fire extinguishers, also known as Halon extinguishers, are halon fire extinguishers (CF2ClBr), which can extinguish class ABCE fires and are consistent with ammonium phosphate dry powderHe can't extinguish the fire better than the dry powder extinguisherIt requires the approval of the fire department and the EPA because it is one of the culprits of the ozone problem and the destruction of the ozone layer
