Efficient Biodiesel Oil and Water Separation Disc Centrifuge

• Customization: Available
• After-sales Service: Online Support
• Warranty: One Year
• Model NO.: SZ/SZC
• Type: Centrifuge
• Object: Starch
• Separation Mode: Filter Type
• Operating Type: Continuous Type
• Installation: Horizontal
• Centrifuge Type: Disc Centrifuge
• Distillation Equipment Type: Other
• Extraction Tower Type: Turntable Tower
• Pressure: Medium Pressure
• Condition: New
• Material: Stainless Steel
• Motor: ABB
• PLC: Siemens
• Brand: Shenzhou
• Transport Package: Wooden Case
• Specification: Depends on the model
• Trademark: Shenzhou
• Origin: China
• Package Size: 180.00cm * 159.00cm * 160.00cm
• Package Gross Weight: 5980.000kg

Product Description

Product Description

Process Flow of Biodiesel Separation Using a Disc Stack Centrifuge

Disc stack centrifuges are widely used in biodiesel production to efficiently separate glycerol, catalyst residues, unreacted oils, and other impurities from the crude biodiesel mixture after the transesterification reaction. Below is a detailed workflow and key considerations:

 

Process Steps

1. Pre-Treatment:

   • Reaction Mixture Preparation: After transesterification (oil + methanol + catalyst), the mixture contains biodiesel, glycerol, methanol, and catalyst residues.

   • Settling (Optional): Allow the mixture to settle briefly in a tank to separate a portion of glycerol (heavier phase) via gravity.

2. Centrifugal Separation:

   • Feeding: Pump the crude biodiesel mixture into the disc stack centrifuge.

   • Separation Parameters:

     • Speed: 6,000-10,000 rpm (adjust based on viscosity and impurity content).

     • Temperature: Maintain at 50-70°C to reduce viscosity and improve separation efficiency.

   • Phase Separation:

     • Heavy Phase (Glycerol + Catalyst): Deposited along the centrifuge bowl wall and discharged through the heavy-phase outlet.

     • Light Phase (Biodiesel + Methanol): Collected via the light-phase outlet.

   • Continuous Operation: Industrial systems enable uninterrupted processing for large-scale production.

3. Post-Treatment:

   • Methanol Recovery: Distill methanol from the light phase for reuse.

   • Biodiesel Washing: Wash the biodiesel with water to remove residual catalyst and soap.

   • Final Drying: Remove water traces using vacuum dryers or adsorption filters.

   • Glycerol Purification: Refine the glycerol phase for commercial use (e.g., cosmetics, pharmaceuticals).

Advantages of Disc Stack Centrifuges

1. High Efficiency: Rapid separation of immiscible phases (biodiesel/glycerol) with minimal downtime.

2. Scalability: Suitable for batch or continuous processing (1-100+ tons/hour).

3. Purity: Achieves biodiesel purity >98%, meeting ASTM D6751/EN 14214 standards.

4. Automation: Integrated PLC systems enable precise control of flow rates and separation parameters.

 

Key Considerations

1. Feed Quality: Ensure consistent feedstock composition (e.g., FFA content <0.5%) to avoid emulsification.

2. Temperature Control: Overheating may degrade biodiesel; monitor closely.

3. Maintenance: Regularly clean disc stacks to prevent fouling by soap or solids.

4. Waste Handling: Treat glycerol phase and wash water per environmental regulations.

 

Applications

1. Industrial Biodiesel Plants: Primary separation of biodiesel from glycerol.

2. Feedstock Flexibility: Compatible with vegetable oils (e.g., soybean, rapeseed) and waste cooking oils.

3. Byproduct Recovery: High-purity glycerol for pharmaceutical or chemical industries.

 

Comparison with Alternatives

• Gravity Settling Tanks: Low cost but slow (24-48 hours) and less efficient.

• Membrane Filtration: Effective for fine impurities but prone to clogging and high energy use.

• Three-Phase Centrifuges: Separate biodiesel, glycerol, and solids simultaneously but require complex operation.

 

By integrating disc stack centrifuges into biodiesel production, manufacturers achieve higher yields, reduced processing time, and compliance with global biodiesel quality standards.

Design Capacity 5000-15000 L/H Disc Oil Centrifuge Separator Used Animal Fat Clarification Product description: The oil quality affects the human ...
 

During the dep processing in the breeding industry, the use of separators can help oil recovery in the processing of subsidiary materials, which not only enhances profits, but also reduces pollution emission.

Three separation disc type separator centrifuge for animal oil factory is mainly used in refining meat oil from animals such as fishmeal facotry,animal oil factory, the capacity from 10t/d~600t/d.

 

This special design separator has the full automatic control box which used for safety protection and equips and also been equipped with advanced automatic vibration tester which can view vibrating value at any time. We can make separating and discharging to the best affection from regulating separation parameter directly at the screen.

 

It has advantages of high speed, smooth operating, compact structure, small footprint, all sealed of the inlet and discharge, low noise, good separation. The materials of centrifuge which contact with the parts are stainless steel which meets the requirements of food grade.

The disc separator is specially used for the two-phase and three- phase separation. The two-phase separation is to separate the suspended solid from liquid or two liquids which have the different specific gravity and are immiscible. The three-phase separation is to separate the two immiscible liquid phases and a phase of solid at the same time.

The materials are transmitted to the heart parts of this machine, the inside of the drum. Under the action of strong centrifugal force, the materials (mixed liquid) pass through the intervals of a group of disk pieces bundles, and then through the neutral hole of the disk pieces as the interface, the liquid with higher density (heavy phase) moves outward the neutral hole along the disk pieces, among which, the heavy residues accumulate in the sediment area, and the heavy phase flows to the large centripetal pump. The liquid with lower density (light phase) moves inward and upward along the disk pieces wall and gathers in the small centripetal pump. The heavy phase and light phase output by the large centripetal pump and small centripetal pump respectively.
Technical parameter

Main parameter	DPF 445	DPF 530	DPF 550
Bowl Inner Diameter	445 mm	530 mm	550 mm
Disc Number	73	80	110
Bowl Rotating Speed	5100 rpm	4650 rpm	4500 rpm
Separating Factor	6480	6400	6230
Capacity	35000~40000 L/h	45000 L/h	75000 L/h
Motor Power	37 Kw	37 Kw	55 Kw
Nozzle	10	10	12
Dimension (L×W×H) mm	1503×1129×1516	1430×1174×1544	2044×1320×1954
Weight (kg)	1100	1550	2100
Warranty	1 year	1 year	1 year

Main Features

1) Used to remove protein ,gum from starch slurry.
2) Fully stainless steel.
3) Speed ,vibration display. Convenient operation.
4) Running continuously.
5) High rotating speed ,high seperating factor.
6) Low power and water consumption.


 

Product model list

 

Model	Flowrate	Inlet pressure	Outlet pressure	Power	Weight
DHZ470	2500-7000 LPH	0.05 MPA	0.1-0.25 MPA	15 KW	1880 KG

 

 

Product Advantage

 

1. Continuous feeding

 

2. High separation factor

 

3. Automatic residue discharging

 

4. Concise bowl design without frequent washing

 

5. Hydraulic coupling driving with longer service

 

6. PLC system automatic control

Details

Working principle

The bowl driven by the motor through the friction clutch spiral gear pair rotates around the main shaft at a high speed. Stock liquid flows into the bottom of bowl's wall through the bottom edge of disc seats and their holes in it. Solid material settles onto the inner surface wall of the bowl and forms into the residue by the centrifugal force field. Then the residue will be discharged manually after the machine stops. Light liquid flows along up the outer cone surfaces of discs to the main shaft center, passes through the light liquid centripetal pump and drains out of the light liquid outlet. Heavy liquid flows along the inner tapered surface of disc down to the bowl's wall and then passes through the heavy liquid centripetal pump and drains out the heavy liquid outlet.
 

Main feature

The bowl driven by the motor through the friction clutch spiral gear pair rotates around the main shaft at a high speed. Stock liquid flows into the bottom of bowl's wall through the bottom edge of disc seats and their holes in it. Solid material settles onto the inner surface wall of the bowl and forms into the residue by the centrifugal force field. Then the residue will be discharged manually after the machine stops. Light liquid flows along up the outer cone surfaces of discs to the main shaft center, passes through the light liquid centripetal pump and drains out of the light liquid outlet. Heavy liquid flows along the inner tapered surface of disc down to the bowl's wall and then passes through the heavy liquid centripetal pump and drains out the heavy liquid outlet.

 

Main applications

It is used for preconcentration of starch, separation of starch and gluten, concentration of gluten and clarification of process
water.