Abstract: Abstract: Dust explosion protection is an important field to prevent and mitigation safety accidents. Focusing on the problems in low efficiency of dust explosion suppression, flame quenching of high temperature and pressure venting efficiency are difficult to balance, etc., the research on dust explosion suppression and venting technology is carried out. Preventing and mitigating the consequences of accidents has become a hot issue to be solved urgently today. This paper analyzes and summarizes the kinetic mechanism of dust suppression reaction, clarifies the suppression mechanism of suppressants on gas-phase reaction and surface reaction of dust explosion, and introduces the development of high-efficiency suppressants for dust explosion. An accurate prediction model of explosion venting pressure and flame dimension is established. Finally, the characteristics and deficiencies of flameless venting technology and equipment for dust explosion are discussed. This paper has important guiding significance for the efficient prevention and control of dust explosion.

Key words: Key words: dust explosion, explosion suppression, explosion suppression mechanism, explosion venting, flameless venting