ZHANGJIAGANG CITY PEONY MACHINERY CO.,LTD
| Packaging Details | Standard export package, polywood, fumigated wood, filmed |
| Delivery Time | 45-75 days after down payment |
| Payment Terms | TT,.LC,Western Union |
| Supply Ability | 60 sets per month |
| Application | Liquid-liquid-solid separation |
| Operation | Automatic continuous |
| MOC | SS |
| Motor | Double |
| Control box | With |
| PLC | Optional |
| Bearing | SKF, NSK |
| Color | Customized |
| Place of Origin | China |
| Brand Name | Peony |
| Certification | ISO |
| Model Number | PDCS |
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Product Specification
| Packaging Details | Standard export package, polywood, fumigated wood, filmed | Delivery Time | 45-75 days after down payment |
| Payment Terms | TT,.LC,Western Union | Supply Ability | 60 sets per month |
| Application | Liquid-liquid-solid separation | Operation | Automatic continuous |
| MOC | SS | Motor | Double |
| Control box | With | PLC | Optional |
| Bearing | SKF, NSK | Color | Customized |
| Place of Origin | China | Brand Name | Peony |
| Certification | ISO | Model Number | PDCS |
| High Light | liquid liquid separation equipment ，three phase centrifuge | ||
A three phase decanter centrifuge for used cooking oil recovery is designed to continuously separate recovered oil, water, and suspended solids from waste cooking oil mixtures in a single operation. It is widely used in used cooking oil recycling plants, grease recovery systems, food waste oil recovery, and biodiesel pretreatment lines.
Compared with simple settling or basic filtration, a three phase decanter provides faster separation, better oil recovery, lower solids carryover, and more stable continuous operation.
For plants handling variable waste oil feeds, it helps reduce manual cleaning, improve downstream processing stability, and increase the value of recovered oil.
Used cooking oil is usually not a clean liquid. In most real operating conditions, it contains three main phases at the same time:
This is why simple oil-water separation is often not enough.
If solids are not removed effectively, they can increase wear, block pipelines, contaminate recovered oil, and create instability in storage or downstream refining. If water remains too high, the oil becomes less suitable for reuse or for biodiesel feed preparation. A three phase decanter centrifuge solves this by separating all three phases continuously in one machine.
The used cooking oil mixture enters the rotating bowl through the feed pipe.
Under centrifugal force, the heaviest solid particles move outward and form a solids layer near the bowl wall. The water phase, being heavier than oil but lighter than solids, forms the middle liquid layer. The oil phase, as the lightest fraction, remains closer to the center.
A screw conveyor rotates at a controlled differential speed and continuously pushes the separated solids toward the discharge end. Meanwhile, the liquid phases are separated internally and discharged in a controlled manner, allowing continuous recovery of oil while removing water and solids.
| 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 |
Instead of using multiple separate units, the three phase decanter performs continuous three-phase separation in one machine, simplifying the process line.
Better recovered oil qualityBy removing water and suspended solids more effectively, the recovered oil becomes cleaner and more suitable for storage, resale, or downstream treatment.
Reduced disposal loadSolids are discharged continuously, helping reduce sludge volume and lower waste handling pressure.
Stable continuous operationThe machine is suitable for plants that require continuous processing of variable waste oil feeds rather than stop-and-go batch settling.
Lower labor dependenceCompared with manual settling, skimming, and repeated tank cleaning, the centrifuge reduces operator workload and improves process consistency.
Better pretreatment for biodiesel or refiningA more stable oil feed can help improve the performance of downstream heating, filtration, reaction, or purification steps.
Under suitable feed temperature and operating conditions, the system can typically help achieve:
Final performance depends on oil content, water content, solids content, viscosity, temperature, emulsification level, and operating parameters.
To recommend a suitable three phase decanter centrifuge for used cooking oil recovery, it is helpful to provide the following information:
Its main purpose is to continuously separate oil, water, and solids from used cooking oil mixtures so that the oil can be recovered more efficiently.
Why not use a two phase decanter?A two phase decanter mainly separates solids and liquid. If the liquid phase contains both oil and water, a three phase decanter is usually more suitable because it can separate the two liquid phases at the same time.
Can it handle feed with high solids content?Yes, but the actual suitability depends on solids concentration, particle type, viscosity, and required throughput. For high-solids or unstable feeds, a reinforced configuration may be recommended.
Is heating necessary?In many used cooking oil applications, preheating helps reduce viscosity and improve separation efficiency. The exact temperature range depends on the feed characteristics and process target.
Can the machine be used before biodiesel production?Yes. It is commonly used as a pretreatment step to reduce water and solids before further biodiesel processing.
If you have customer resources or project opportunities in used cooking oil recycling, biodiesel pretreatment, grease recovery, or oil-water-solid separation, Peony welcomes cooperation.
We support distributors, agents, and project partners with model selection, process advice, customized configuration, equipment manufacturing, installation guidance, spare parts, and after-sales service.
Send us your market, customer type, and project details. Our team will help evaluate the suitable separation solution.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
35Million -40Million
Employee Number:
500~550
Ecer Certification：
Verified Supplier
Basic Information Zhangjiagang City Peony Machinery Co., Ltd., founded as a special producing enterprise of separating equipment in 2008, is the well-known manufacturer and service provider of separation and filtration in China. Peony dedicated to solving the solid-liquid, liquid-liquid separat... Basic Information Zhangjiagang City Peony Machinery Co., Ltd., founded as a special producing enterprise of separating equipment in 2008, is the well-known manufacturer and service provider of separation and filtration in China. Peony dedicated to solving the solid-liquid, liquid-liquid separat...
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