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Petroleum refining centrifugal separator working principle and performance index

Apr 18, 2018

Inside a petroleum refiner, there is a cylinder that rotates around its axis at high speed. This is what we call a drum, usually driven by an electric motor. When a suspension or emulsion is added to the drum, it is rapidly driven to rotate at the same speed as the drum, and the components are separated under centrifugal force and discharged separately.


For petroleum refining centrifuge separator, the higher the drum speed, the better the separation effect. At present, the centrifugal separator's principle of action includes centrifugal filtration and centrifugal sedimentation. Centrifugal filtration is the centrifugal pressure generated by the suspension under the centrifugal force field. It acts on the filter medium, and the liquid passes through the filter medium to become the filtrate, and the solid particles are Entrapped on the surface of the filter medium to achieve liquid-solid separation.


Centrifugal separator centrifugal sedimentation is the use of the characteristics of the different components in the suspension or emulsion, so that it quickly settled in the centrifugal force stratification principle, to achieve liquid-solid or liquid-liquid separation. The petroleum refining centrifuge will be refined in this way.


In addition to petroleum refining, petroleum refining centrifuge separator can also perform liquid clarification and solid particle enrichment, or liquid-liquid separations, with particle sizes ranging from 0.1 to 0.5 microns. This type of separator has different types of operation under normal pressure, vacuum, and freezing conditions, and is mainly used to separate the solid particles from the liquid in the suspension; or to exclude the liquid in the wet solid.


Under normal circumstances, the separation performance of petroleum refining centrifuge separator can be measured by the important factor of separation factor. It represents the ratio of the centrifugal force to the gravity of the material to be separated in the drum. The larger the separation factor, the larger the separation factor is. The faster, the better the separation.