A decanter centrifuge separates solids from liquid phase(s) with high efficiency. In the centrifuge the gravitational acceleration is replaced by the much higher centrifugal acceleration (up to 4000 x g). By this high bowl speed the solids (higher density) are separated from liquids (lower density).
2-phase separation with a decanter
2-phase separation with a DecaPress decanter means that the liquid and the solid phase are separated from each other by centrifugal acceleration. The solids particles collect due to their higher density on the bowl wall and are transported with the scroll to the discharge openings. At the same time the cleared liquid flows along the scroll into the liquid discharge zone.
3-phase separation with a decanter
With TricaPress decanters 3 phases can be separated from each other in one process step only. Here two liquids which cannot be mixed and have different densities (e.g. oil and water) are separated from a solids phase. The heavy liquid (water) collects in the middle between the oil and the solids layer. Thus the two liquids separated from each other can be drawn off from the TricaPress decanter. The solids are transported via the scroll to the discharge openings as it happens also in 2-phase separation.
Typical applications of 3-phase separation are production of edible oils such as olive oil, oil sludge processing, the production of bio diesel etc.