Decanter centrifuge for crude palm oil process

PAWT series decanter centrifuge separates the underflow of the main settling tank (CST) into oil, sludge water and solid cake in its 3-phase operation

Separation takes place in a horizontal conical-cylindrical bowl equipped with a screw conveyor. The palm oil sludge is fed into the bowl through a stationary inlet tube and smoothly accelerated by a specially designed inlet distributor. Centrifugal force causes instant sedimentation of the solids on the wall of the bowl, and a layer-wise separation of heavy (water) and light (oil) liquids. The conveyor, rotating in the same direction as the bowl, but at a different speed, conveys the solids to the conical end. Here the solids are lifted clear of the liquid and centrifugally dewatered before being discharged into the collecting vessel. The clarified liquids overflow into the casing through openings in the cylindrical end of the bowl. Both phases leave the collecting compartments in the hood by gravity flow through outlets under the machine.

The initial introduction of decanter centrifuge in the palm oil mill industry encountered only a small measure of success. This was due to the high wear and tear on the decanter conveyor due to the presence of abrasive particles (mainly sand) in the crude palm oil. Huading Separator continued to work to improve the wear resistance throughout the years. Huading Separator then developed the riveting of the tungsten carbide tiles to the conveyor. The riveted tungsten carbide tile design improved the lifetime of the conveyor dramatically.

ModelL (mm)W  (mm)H  (mm)weight  (Kg)motor (Kw)capacityBackDrive System
PAWT40E37509801180230022up to 30mt FFB/hVariable Frequency Drive
PAWT50D420011001300350037up to 45mt FFB/hVariable Frequency Drive
PAWT55450012301400400045up to 60mt FFB/hVariable Frequency Drive
PAWT60C530014251800650075up to 100mt FFB/hVariable Frequency Drive

decanter working principle