Research on Wear Reduction Characteristics of New 90° Elbow in Ventilation and Dust Removal System of Steel Plant
In the ventilation and dust removal system of steel plant,the long time erosion wear of the 90° elbow will lead to the failure of the pipeline and seriously affect the production safety.To solve this problem,the accuracy of the erosion model was verified by the experimental data and CFD-DPM numerical simulation method.In order to reduce elbow wear,an optimized 90° elbow suitable for dust removal system was proposed,and the effects of particle velocity,particle size and particle mass flow on elbow erosion were analyzed.The results show that the growth rate of maximum erosion rate of opti-mized elbow with particle velocity is lower than that of ordinary elbow.The maximum erosion rate of optimized elbow can be reduced by about 33％at each flow velocity.However,with the increase of particle speed,the optimization effect of opti-mized elbow gradually weakens.The optimized elbow can reduce the maximum erosion rate of particles with 75 µm particle size by about 34％,and the maximum erosion rate of particles with other particle size by about 27％,indicating that the op-timized elbow has a good wear reduction effect on erosion of different particle sizes,with a more significant effect on erosion reduction of small particle sizes.When the particle mass flow rate is 0.01 kg/s and 0.02 kg/s,the maximum erosion rate can be reduced by about 35％.When the particle mass flow rate increases,the optimization effect gradually weakens.
erosion wearmaximum erosion rateventilation and dust removal systemoptimized elbowerosion model
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