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Structural characteristics and working principle of petroleum refining centrifugal separator

Aug 22, 2018

Petroleum refining centrifugal separator is a machine that uses centrifugal force to separate liquid and solid particles or liquid and liquid mixture components, mainly used to separate solid particles in a suspension from liquids; or to have two densities in emulsion Different, mutually incompatible liquids are separated; it can also be used to remove liquids from wet solids.


The petroleum refining centrifugal separator has a cylinder rotating at a high speed around its own axis, usually driven by an electric motor; after the suspension is added to the rotating drum, it is rapidly driven to rotate at the same speed as the rotating drum, and the components are separated under the action of centrifugal force and discharged separately. . Generally, the higher the drum speed, the better the separation.


The petroleum refining centrifugal separator has two kinds of centrifugal filtration and centrifugal sedimentation. The centrifugal filtration is the centrifugal pressure generated by the suspension under the centrifugal force field, acting on the filter medium, so that the liquid passes through the filter medium to become a filtrate, and the solid particles are trapped in the filtration. The surface of the medium is used to achieve liquid-solid separation; centrifugal sedimentation is the principle of rapid sedimentation and stratification in the centrifugal force field by using different concentrations of suspension (or emulsion) to achieve liquid-solid separation.


An important indicator used to measure the separation performance of petroleum refining centrifuges is the separation factor. The larger the separation factor, the faster the separation is usually and the better the separation. Another factor that determines the processing capacity of the centrifuge is the working area of the drum, which is also large in processing area.