Study On Mechanism And Application Basis Of Gas-Liquid-Solid Three-Phase Hydrocyclone Separation

The method of combining the theoretical analysis, numerical simulation, and experimental research is adopted. The separation property and flow field characteristics of gas-liquid-solid three-phase hydrocyclone are studied. The dimensional parameters of the hydrocyclone are optimized by using numerical simulation method, and operating conditions with different operation parameters are simulated and analyzed, effects of dimensional parameters and operation parameters on flow field and separation effect are made clear. The optimum operation parameters of the hydrocyclone are determined by using experimental research, the experimental study further proved the correctness of model choice and reasonableness of structure optimization, and the design for degassing and desanding integrated process equipment is completed.The method of computational fluid dynamics (CFD) is adopted by using the Fluent software. Numerical simulation for the initial model of the hydrocyclone was first carried out. The flow field characteristics of the velocity distribution law, the density distribution law and pressure distribution law etc. were analyzed; the improved scheme was made and the structure improving analysis of the inner cone, the liquid-out hole,whirl cavity and the overflow pipe was carried out, because of the structure defects of the initial model. The final structure was determined, so the effects of treatment capacity, gas-liquid volume ratio and split ratio on separation effect were analyzed and studied on this basis.The experimental study on structure optimizing three-phase hydrocyclone was carried out, and high efficient separation of gas-liquid-solid three-phase was realized. By means of laboratory tests, the effects of treatment capacity, gas-liquid volume ratio, split ratio etc on separation effect were found out, and the obvious effect of the equipment and the feasibility for optimizing hydrocyclone by using numerical simulation method was further proved. On the basis of numerical simulation and experiments, according to the structure sizes of hydrocyclone and the actual requirements on the field site, th study of hydrocyclone on field application was carried out, and the design for degassing and desanding integrated equipment and the process is completed, it lays a foundation for field application of hydrocyclone.This work provides a theoretical basis and reference for further research of the separation mechanism, separation characteristic and structural optimization design of the three-phase hydrocyclone, and provides a beneficial reference for the efficient degassing and desanding integrated process.