Polyurethane Cyclone

The cyclone is the most important part of the desander and desilter, and it is mainly used to remove the remaining cuttings larger than barite. When the drilling fluid is added with barite, the bottom flow of the desilter is sieved (100 Mesh to 325 mesh), so that most of the barite can be recovered, and the cuttings larger than the mesh can be continuously removed.

A polyurethane cyclone is a common separation and classification device, typically based on the principle of centrifugal sedimentation. When the two-phase mixture to be separated enters the hydrocyclone tangentially from its periphery under a certain pressure, it generates intense three-dimensional elliptical rotational shear turbulence. Due to the size difference between coarse and fine particles, they experience different magnitudes of centrifugal force, centripetal buoyancy, and fluid drag. Under centrifugal sedimentation, most of the coarse particles are discharged through the underflow outlet of the hydrocyclone, while most of the fine particles are discharged through the overflow pipe, thus achieving the purpose of separation and classification.