The influence of pipeline deposited dust on the explosion propagation of dust collector

An explosion experiment involving corn starch was conducted using a small tank directly connected to the pipeline. The objective was to investigate how the mass and location of deposited dust in the pipeline affect the explosion pressure and flame propagation characteristics of the dust cloud. The results revealed that when the container was at the optimum dust explosion concentration, as the mass of deposited dust increased, the maximum explosion pressure of both the container and pipeline increased and then decreased. Additionally, the maximum flame propagation velocity and flame propagation length gradually decreased as deposited mass increased. Furthermore, as the distance between the location of deposited dust in the pipeline and the container increased, the maximum explosion pressure increased and then decreased. Similarly, the maximum flame propagation velocity demonstrated a similar trend, whereas the flame propagation length gradually increased. In conclusion, the study's findings offer a theoretical foundation for scientifically assessing and effectively preventing and controlling explosion disasters in dust removal systems.