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The Decanter Centrifuge for Sunflower Oil Separation is designed for continuous separation of oil, water, and solid impurities during sunflower oil processing.
It is suitable for sunflower seed oil production, crude oil clarification, oil sludge treatment, and oil recovery applications. The centrifuge separates fine solids and moisture from sunflower oil through high centrifugal force, improving oil purity and reducing valuable oil loss.
- Sunflower crude oil clarification
- Sunflower seed oil purification
- Oil sludge separation
- Oil-water-solid separation
- Vegetable oil recovery
- Press cake liquid recovery
- Edible oil refining pretreatment
- Oil processing wastewater treatment
Fine Seed Residue Removal
Sunflower oil may contain fine solid particles from seed crushing and pressing processes, which are difficult to remove completely.
Oil Loss in Sludge
Residual sunflower oil trapped in solid impurities can reduce product yield and increase production costs.
Oil-Water Emulsion
Moisture and processing additives may create stable oil-water mixtures that affect separation efficiency.
High Moisture Content
Crude sunflower oil and sludge streams may contain excess water, affecting storage and downstream refining.
Variable Feed Conditions
Different sunflower seeds, pressing methods, and production stages create changes in viscosity and solid concentration.
Food-Grade Production Requirements
Edible oil processing requires hygienic equipment materials and clean separation conditions.
Sunflower Oil Separation Solution
Sunflower Oil Feed
→ Pretreatment
→ Feed Tank
→ Decanter Centrifuge
→ Clarified Sunflower Oil + Water Phase + Solid Residue
Recovered Oil → Refining / Storage
Separated Solids → Disposal / Further Processing
Separated Water → Treatment / Recycling
Peony Can Provide
- Sunflower oil sample testing and centrifuge selection
- Food-grade SS304/SS316L contact materials
- Oil-water-solid separation configuration
- Adjustable bowl speed and differential speed
- PLC automatic control system
- Oil recovery and clarification solution
- Wear-resistant scroll protection
- Complete sunflower oil processing integration
How the Decanter Centrifuge Works
1. Sunflower Oil Feeding
Crude sunflower oil containing moisture and solid impurities enters the rotating bowl.
2. Solid Sedimentation
Under centrifugal force, heavier solid particles move toward the bowl wall and form a concentrated solids layer.
3. Liquid Separation
Oil and water separate according to density differences inside the rotating bowl.
4. Solids Conveying
The scroll continuously transports separated solids toward the discharge outlet.
5. Continuous Discharge
Clarified sunflower oil, separated water, and solid residues are discharged continuously.

| Model | Diameter (mm) | Length (mm) | Length-to-diameter rate | G force | Max solid discharge (m³/h) | Weight (kg) | Dimension (L*W*H) (mm) |
|---|---|---|---|---|---|---|---|
| PDC-10 | 250 | 1000 | 4 | 4080 | 0.4 | 1000 | 2410*800*1080 |
| PDC-12 | 4200 | 1350 | 4 | 3500 | 0.6 | 1200 | 2610*800*1080 |
| PDC-12 | 4200 | 1350 | 4.5 | 3180 | 1.2 | 1800 | 3495*840*1180 |
| PDC-18 | 4000 | 1600 | 4.5 | 3180 | 1.2 | 3200 | 3497*1020*1385 |
| PDC-18 | 450 | 2150 | 4 | 2500 | 2 | 3800 | 4447*1080*1385 |
| PDC-20 | 400 | 2250 | 4.5 | 2500 | 3.5 | 4000 | 4580*1140*1470 |
| PDC-21 | 530 | 2280 | 4.3 | 2500 | 5 | 5000 | 4924*1170*1540 |
| PDC-26 | 655 | 2800 | 4.3 | 2270 | 8 | 7000 | 4300*1900*1350 |
Main Advantages
Improved Crude Oil Recovery
Recovers hydrocarbons from sludge and reduces oil loss before disposal or further treatment.
Handling of Heavy Crude Residues
Heating and high-torque conveying support viscous sludge containing wax, asphaltenes, and heavy oil.
Sand and Rust Separation
Wear-protected components handle abrasive sand, scale, rust, and tank sediment.
Stable Separation with Variable Feed
Adjustable bowl speed, differential speed, and phase interface adapt to changing oil, water, and solids ratios.
Lower Downstream Treatment Load
Removing oil and solids reduces the volume sent to thermal treatment, wastewater treatment, or hazardous-waste disposal.
Please provide:
- Oil, water, and solids percentages
- Temperature and viscosity
- Particle size and solids type
- Required processing capacity
- Oil recovery and water targets
- Safety and downstream requirements
Is heating required for crude-oil sludge?
It is commonly recommended for waxy or high-viscosity sludge. The required temperature depends on the crude-oil properties and plant safety limits.
Can the centrifuge process tank-bottom sand and rust?
Yes, after coarse foreign materials are removed. Wear-resistant protection is recommended for highly abrasive feeds.
Can it separate stable crude-oil emulsions?
Stable emulsions may require heating, demulsifier dosing, dilution, and controlled mixing before centrifugation.
Can recovered oil return directly to storage?
Not automatically. Water, sediment, salt, and contaminant levels should be tested before blending or reprocessing.
Can separated water go directly to discharge?
Usually not. Residual oil, suspended solids, COD, salts, and chemicals may require further oily-water treatment.
Peony welcomes cooperation with refineries, crude-oil storage terminals, tank-cleaning contractors, oil-sludge processors, hazardous-waste companies, and environmental engineering partners.
Send us your sludge composition, viscosity, temperature, required capacity, recovery target, and downstream arrangement. Our engineering team will recommend a suitable three-phase decanter centrifuge solution.
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