Our Allcentrifuges 3 phase decanter centrifuge is the most advanced machine for Solid-liquid-liquid three-phase separation, designed for 24/7 continuous and smooth operation. With over 30 years of expertise in the separation industry, our decanter centrifuge is composed of a driving system, decanter bowl, screw conveyor, cover box, skid, and VFD control panel, making it the ideal choice for 3 phase separation.
The solid phase must be the heaviest in order for the separation process to occur. Furthermore, the two liquid phases must have distinct densities. The main contrast between the 2-phase and 3-phase decanters is that the latter not only separates solids, but also separates the two liquid phases.
The Allcentrifuges 3 phase decanter is commonly utilized in the oil, water, and solids separation industry. It is a highly efficient and reliable tool for separating different types of substances.
3 PHASE DECANTER WORKING PRINCIPLE
The operation of a three-phase decanter centrifuge is based on sedimentation, where solid particles with a specific liquid weight settle in a predetermined time. This principle can also be used for two immiscible liquids of different specific gravity. As the material enters the high-speed rotating drum, it synchronizes with the drum and experiences varying centrifugal forces due to its different specific gravity. The largest centrifugal force is applied to solid particles with a larger specific gravity, followed by heavy phase liquid (e.g. water) and light phase liquid (e.g. oil). Thus, the centrifugal force decreases from outside to inside. This process creates a concentric solid layer and two liquid layers. The solids are expelled by the screw conveyor, while the liquids are drawn out through designated nozzles. The three-phase decanter centrifuge is not only capable of separating solids from materials, but it can also separate two-phase liquids of different specific gravity, achieving solid-liquid-liquid separation.
| Model | Diameter(mm) | Length(mm) | Max speed | L/D ratio | G-force | Capacity(m3/h) | Main motor power(Kw) | Weight(kg) | Dimension(mm) |
|---|---|---|---|---|---|---|---|---|---|
| LW250*1000 | 250 | 1000 | 5000 | 4 | 2722 | 0.5-5 | 7.5 | 1600 | 2120*1250*680 |
| LW300*900 | 300 | 900 | 4200 | 3 | 2964 | 1-6 | 11 | 1900 | 2150*1300*900 |
| LW300*1200 | 300 | 1200 | 4000 | 4 | 2784 | 2-6 | 11 | 2700 | 2450*1300*900 |
| LW355*1160 | 355 | 1160 | 3600 | 3.3 | 2576 | 2-8 | 15 | 2750 | 2470*1350*830 |
| LW355*1460 | 355 | 1460 | 3600 | 4 | 2576 | 2-10 | 15 | 2850 | 2750*1350*830 |
| LW400*1200 | 400 | 1200 | 3200 | 3 | 2294 | 2-12 | 18.5 | 3100 | 2730*1600*1080 |
| LW400*1600 | 400 | 1600 | 3000 | 4 | 2016 | 3-15 | 22 | 3260 | 3130*1600*1080 |
| LW450*1800 | 450 | 1800 | 2800 | 4 | 1976 | 4-25 | 37 | 3250 | 3320*1700*1130 |
| LW500*2000 | 500 | 2000 | 2800 | 4 | 1750 | 5-35 | 45 | 4000 | 3520*1800*1170 |
| LW530*1855 | 530 | 1855 | 2600 | 3.5 | 2006 | 5-38 | 55 | 4680 | 3885*1350*1600 |
| LW530*2120 | 530 | 2120 | 2400 | 4 | 1709 | 5-40 | 55 | 4800 | 4150*1350*1600 |
| LW550*2000 | 550 | 2200 | 2800 | 4 | 2414 | 6-40 | 55 | 5700 | 4570*1380*1600 |
| LW650*1950 | 650 | 1950 | 2200 | 3 | 1761 | 6-45 | 75 | 5000 | 4840*1510*1720 |
| LW650*2600 | 650 | 2600 | 2000 | 4 | 1456 | 6-65 | 90 | 6000 | 5490-1510*1720 |
| LW720*2160 | 720 | 2160 | 2000 | 3 | 1612 | 7-80 | 120 | 6000 | 5200*1600*1800 |
| LW720*2880 | 720 | 2880 | 2000 | 4 | 1306 | 7-90 | 120 | 8000 | 3100*1600*1800 |
| LW800*2400 | 800 | 2400 | 1800 | 3 | 1451 | 20-100 | 150 | 12000 | 5820*2000*1300 |
| LW800*3200 | 800 | 3200 | 1800 | 4 | 1451 | 20-120 | 150 | 13000 | 7100*2000*1300 |
HOW DOES IT WORK
The decanter centrifuge takes in feed through an inlet and separates it in its horizontal bowl with a cylindrical and conical portion. Fast rotation creates centrifugal forces up to 4000 x g, which collect higher density solid particles on the bowl’s wall. A scroll, rotating at a slightly different speed, is used to convey the precipitated particles to the conical end of the bowl. Dehydrated solids are discharged at the smallest end of the conical portion, while clarified liquid exits through the mating disc (internal centrifugal pump).
A 3-phase decanter centrifuge allows for the simultaneous separation of three phases in a single process step. This is particularly useful when dealing with two immiscible liquids, such as oil and water, and a solid phase. The heavier liquid, water in this case, will collect in the middle between the oil and solid layers, allowing for easy removal of the separated liquids. The solids are then conveyed to the discharge openings by the scroll, similar to the process used in 2-phase separation.
Examples of common uses for 3-phase separation include the manufacture of edible oils, such as olive oil, processing oil sludge, and producing biodiesel.
CENTRIFUGE DECANTER APPLICATIONS
Waste water treatment, food processing, Petrochemical, Petroleum, Waste recycling, Fish processing, Chemicals, Beneficiation, Organic Chemicals, Polymer industry, Inorganic chemical industry
CENTRIFUGE DECANTER TECHNICAL
CENTRIFUGE DECANTER ADVANTAGES
- No more odour problems
- Clean appearance
- Reduced labour costs
- Easy to install and operating equipment
- Operate for different sludge types
- Small footprint
- Operating for thickening or dewatering
- More process flexibility and higher levels of performance
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