Calibration Experiments of Petroleum Coke Particle Contact Parameters Based on the Discrete Element Method
Clarifying the physical properties and contact parameters of petroleum coke was crucial for understanding the descent motion of petroleum coke in the vertical shaft calciner.In this study,the inclined plate collision experiment technique was used to determine the average restitution coefficients of petroleum coke with steel plate,silica brick,and between petroleum coke,which were 0.400,0.595,and 0.608,respectively.The static friction coefficients between petroleum coke and the steel plates,petroleum coke and silica bricks were determined to be 0.368 and 0.599,respectively,using the inclined plane lifting method.Based on the fixed funnel experiment method and discrete element simulation technology,using the Box-Behnken experimental design method to calibrate the static friction coefficients between petroleum coke particles were 0.415,as well as the rolling friction coefficients of petroleum coke with steel plate,silica brick,and petroleum coke particles were 0.036,0.050,and 0.042,respectively.The error in the stacking angle obtained from the funnel physical experiment and simulation calculation was less than 0.5％.This research can provide theoretical and data support for the particle movement behavior in the vertical shaft calciner.
petroleum cokestacking anglefunnel experimentdiscrete element methodparameters calibration
万方数据
维普
