Influence of swirling intensity on lump coal particle pickup velocity in pneumatic conveying

摘要: Abstract Pickup velocity, defined as the airflow velocity requirement of initial movement solid particles, is well-recognized minimum conveying required a pneumatic system. To reduce influence swirling intensity on lump coal particle pickup was studied via experimental measurements. The determined by weight loss method and whole process recorded high-speed camera. Initially, side inlet guide vanes generator developed used to measure effect airflow. impact discussed regressed, considering tangential flow rate, total measurement position. Subsequently, velocities 5 to15 mm particles in axial field were separately determined. In addition, normative gradual change rate utilized examine variation with intensity. Two points particular are worth highlighting: (1) prone rolling up from bed fore-end, rather than locally layer-by-layer peeling off field; (2) first increases then decreases number, cubic polynomial function has favorable adaptability fit relationship between fitting results show good agreement measurements, errors being