Three Phase Decanter Centrifuge

Three Phase Decanter Centrifuge

GN three phase decanter centrifuge is primarily designed to facilitate the three-phase separation of solid-liquid-liquid materials. Leveraging our extensive 10-year experience in the field of separation, this machine stands as the pinnacle of advanced technology for three-phase separation. Its design ensures seamless and uninterrupted operation round the clock, making it suitable for continuous 24-hour usage. The key components comprise the driving system, decanter bowl, screw conveyor enclosed within the bowl, cover box, skid, and VFD control panel.

For effective separation, it is crucial that the solid phase possesses the highest specific density, while the two liquid phases possess varying densities. The fundamental distinction between the 2-phase decanter and the 3-phase decanter lies in the latter's ability to separate both solids and two distinct liquid phases.

Working principle of the three phase decanter centrifuge：

The working of the three phase decanter centrifuge relies on the principle of sedimentation, wherein solid particles with a specific liquid weight settle over a predetermined time. This principle can also be applied to two immiscible liquids with different specific gravities. Upon entering the high-speed rotating drum, the material synchronously rotates with the drum. Due to varying specific gravities, different centrifugal forces act upon the constituents. Solid particles with higher specific gravity experience the greatest centrifugal force, followed by the heavy phase liquid (e.g., water) and the light phase liquid (e.g., oil). Consequently, the centrifugal force decreases progressively from the outer region to the inner region. This gradient leads to the formation of a concentric solid layer and two liquid layers. The screw conveyor expels the solids, while the liquids are discharged through their respective outlets. Therefore, the implementation of a three-phase decanter centrifuge not only facilitates the separation of solids within a material but also enables the separation of two liquid phases with differing specific gravities, thereby achieving solid-liquid-liquid separation.

Specifications of GN three phase decanter centrifuges

The Features of Bowl Assembly

• Bowl Material: SS2205 Duplex Stainless Steel

• Solids Discharge Port: Equipped with Tungsten Carbide insert

• Bearing: Utilizes SKF or Japan NSK Brand bearings

• Gearbox Type: Planetary wheel type

• Screw Conveyor Material: SS2205 Duplex Stainless Steel

• Material Distribution Nozzle: Fitted with Tungsten Carbide insert

• Screw Conveyor Wear Protection: Features Tungsten Carbide Tiles for enhanced durability

• Differential Speed: Adjustable based on specific conditions

• Bearing: Equipped with SKF or Japan NSK Brand bearings

Flexibility for Varying Liquid Phase Proportions:

The decanter centrifuge incorporates an adjustable impeller responsible for discharging the "heavy" liquid phase. This impeller can be conveniently adjusted by the operator to control the pool depth of the heavy liquid during ongoing operations. By utilizing an adjustment mechanism, the impeller's position can be altered, thereby modifying the separation line between the liquids. This capability allows for influencing the process engineering outcomes to achieve the desired separation results based on the proportion of the two different liquid phases.