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Summary and design of drilling fluid Hydrocyclone

2012-10-17

Hydrocyclones are designed for separating solids from liquids and are successfully used in a broad range of industrial and environmental protection. New uses are continually being discovered as engineers and project supervisors become familiar with the Hydrocyclones’ versatility in liquid/solids separation, classfication, and concentration.

Hydrocyclones can be defined as fixed wall centrifugal separator devices that separate particles according to density and mass. Unlike other type of centrifugal separators, the liquid mixture rotates within the chamber, it have a tangential feed inlet leading into the cylinder portion of the cyclone body. There are two axial outlets: one at the tip of the cone, referred to as the “apex”, and a second outlet at the top of the cyclone, known as the “vortex finder”.

The hydrocyclone is a vessel container with cylinder part, the cylinder part of upper cone is mud inlet room; the outboard install a tangential stock inlet; the underpart of cone is open mouth, the size of caliber is adjustable, use for discharging the solid particles. There is a down inserted overflow pipe on the top centre of close vertical cylinder, and extend to below the stock inlet tangent location. The structure is constituted by cylinder, subuliform tank, mud inlet pipe, overflow pipe, sand settling tube, etc.

Hydrocyclones can be made of metal (mostly steel), ceramic or plastic (such as polyurethane, polypropylene, or other types). Metal or ceramic hydrocyclones are used for situations requiring more strength, or durability in terms of heat or pressure. When there is an occurrence of much abrasion (such as occurs with sand particles) polyurethane performs better than metals or ceramics. Metal lined with polyurethane is used in cases of combined abrasion and high pressure.