Research On A New Type Porous Overflow Hydrocyclone

This is based on a liquid-liquid separation hydrocyclone, for its removal of small oil droplets is poor, the short-circuit flow and circular flow have a great influence on it, optimized the overflow structure, proposed a new structure of increasing the length of overflow and perforating hole in the wall. From this design concept, proposed three new porous overflow hydrocyclone, namely cylindrical porous overflow hydrocyclone, cylindrical tapered porous overflow hydrocyclone and tapered porous overflow hydrocyclone. Through numerical simulation method, comparative analysis of fluid field and separation characteristics, bottom flow of purifying effect and separation efficiency as indicators, finally selected the tapered porous overflow hydrocyclone for the specific structure optimization study and determined the main structure.From the fluid flow rule, the velocity and pressure field distribution rule of tapered porous overflow hydrocyclone internal flow field are analyzed theoretically. Based on the main structure of tapered porous overflow hydrocyclone, conducted a detailed study on the distribution pattern of holes, including eight kinds of distribution pattern of holes, through comparative analysis, elected representative of four kinds of distribution pattern of holes for indoor experiments.Through the indoor experimental study, compared the experimental data with numerical simulation results, it can be seen that the basic trend of numerical calculation and practical measurement is consistent. Purifying effect of the bottom flow is very good and gets a high separation efficiency, and to verify the feasibility of the numerical simulation methods and structural design of the new porous overflow hydrocyclone is reasonable.This work is innovative for de-oil liquid-liquid separation hydrocyclone and provides certain theoretical basis and reference for the further research of oil-water separation hydrocyclone overflow structure optimization design.