水力分级旋流器工艺参数匹配优化研究OA北大核心CSTPCD

For the hydraulic grading hydrocyclone in the sludge water treatment of coal preparation plant,there is a problem of low separation performance of equipment due to unreasonable matching of variable parameters.In this paper,taking the YD350-14 hydraulic graded hydrocyclone commonly used in coal preparation plants as the research object,and the separation efficiency and pressure drop as the evaluation index of the separation performance of the hydrocyclone,the matching relationship between the variable parameters of the hydrocyclone(feed concentration,feed flow and installation angle)was studied and optimized based on the response surface method and the non-dominated sorting genetic algorithm(NSGA-II).Finally,according to the Pareto front,the best working parameters of the hydrocyclone are determined as follows:when the hydrocyclone feed concentration is 12 g/L,the installation angle is 80°,and the infeed flow is 80 m3/h,the separation efficiency can be achieved by 86.07%,and the pressure drop is 1155.62 Pa.The field verification of the separation efficiency matching model shows that the separation efficiency is increased by 5.07%after matching optimization,which verifies that the matching model can effectively improve the separation efficiency of the hydrocyclone.This research provides a theoretical basis for the reasonable matching of the process parameters of the hydrocyclone in the coal preparation plants,and opens up a new direction for improving the separation efficiency of the hydraulic gradinghydrocyclone.