Simulation Study On Dynamic Parameters Of Friction Heat Desorption Equipment For Oily Sludge

Oil-based drilling fluid is needed for oil drilling at home and abroad,which will produce a large number of oily sludge in the process of use.The domestic and foreign oil industry attaches great importance to the problem of oily sludge discharge pollution,and the friction heat desorption technology can deal with the waste well.As the key equipment of this technology,friction heat desorption equipment is gradually replacing the traditional treatment equipment because of its short process flow,large treatment capacity and high treatment efficiency.The domestic processing equipment is in the primary stage of research and development,lacking certain theoretical parameters.In this paper,based on the investigation of the friction heat desorption equipment at home and abroad,Using DEM to study the motive power value of cylinder.The three-dimensional simulation model is established with reference to the domestic and foreign equipment and simplified for the convenience of experiment.The initial experimental model size is R370mm ×164mm,and the model is verified.Study on the dynamic parameters of friction heat desorption equipment,The main research contents of this paper include:(1)From the point of view of internal particle impact friction,the number of blades is adjusted to 6,8 and 10 in the 1:2 scale model respectively.Before edem simulation,the blades are split as a separate experiment body,and 12 groups of experimental data are obtained.The effect of the number of blades on the torque is analyzed,and the number of blades in the optimized model is obtained.(2)In order to find out the influence rule of radial dimension of cylinder on the resistance of blade,the radial dimension of cylinder in the optimization model is obtained.(3)Two parameters,filling rate and rotation speed,which are the most commonly optimized in production practice are selected.Three groups and five groups of values of different sizes are selected for these two factors respectively,and a total of 3 × 5 and 15 groups of full combination grouping edem simulation are carried out to study the law of blade torque value changing with the two factors.(4)The rule characteristics of process resistance are obtained through the orthogonal simulation analysis of multiple influencing factors.?A?2 value is calculated from the sweep depth and tip speed converted from the filling rate and rotation speed,and the value of resistance influence coefficient is calculated.It is found that the torque of the blades at different positions is basically the same,and the torque increases in proportion with the increase of the number of blades.There is no obvious relationship between the resistance of the blade and the radial dimension of the cylinder in which the blade is located.The resistance of the blade is basically the same under the different diameter of the cylinder.And with the increase of filling rate(sweeping depth)and rotating speed(tip speed),the torque and resistance of blade will also increase.The numerical value of resistance coefficient was obtained through a number of experimental analysis,which is of great significance for the design of the frictional thermal desorption system of oily sludge.