输煤系统转载点粉尘运移规律研究OA

This paper is to explore the dust migration law of the transfer point of the coal conveying system.Using numerical simulation method,combined with discrete element(DEM)and computational fluid dynamics(CFD)coupling theory,EDEM and Fluent software are used to simulate the motion state of dust particles.The simulation model of coal conveying system is established,including system model and coal block model.Through simulation,the rated transport volume and conveyor belt speed are verified,and the distribution of flow field speed and dust particle size is analyzed.The results show that the airflow flows in from the feed conveyor belt,and the velocity decreases with the increase of the transport distance.The air speed is the largest at the outlet of the guide trough,and the maximum is 2.1 m/s.The dust particles move with the material,and the large particle dust mainly settles in the guide groove,while the small particle dust is easy to suspend and diffuse to the outside of the system with the airflow,which is the main cause of dust pollution.