Experiment Study on Ultrafine Ammonium Phosphate Dry Powder to Repress Gas Explosion
Abstract：Fire Extinguishing Agen-Superfine Ammonium Phosphate Dry Chemical（FEASAPDC）is one of the best substitutes of the behalon extinguishing agent.At the same time,the extinguishing effect of the ultrafine dry powder is much better than ordinary dry powder.In this dessert,the Ultrafine ammonium phosphate dry powder is used in the experiment to restrain the gas explosion.We use the self-improved volume 20 L nearly ballmode explosion restrained test system to test the effect of explosion suppression of the ultrafine ammonium phosphate dry powder whose paiticular size is 22μm.The results show-ed that：the dry powder make the maximum explosion pressure lower 32% when the gas density is 7%.At the same time,the best restrained density is 50g/m3.The experiment proved that：the restrained effect of the dry powder is not only relected to the powder density,but also relected to the gas density.
Keywords：restrain of gas explosionUltrafine ammonium phosphate dry powderpowder densityexplosion limit
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)