Decanter Centrifuge for Oil-Water Separation in Industrial Processes

Decanter Centrifuge for Oil-Water Separation in Industrial Processes

Product Item : DLW
Category： Decanter Centrifuge
Certification:CE Certificate
Core Components: PLC, Engine, Bearing, Motor, Gear
Keyword: calcium hypochlorite separation
Description: Solid-liquid Separation Machine
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Decanter centrifuge descriptions

When it comes to separating solid/liquid mixes with a high solids content, decanter centrifuges are the way to go. These solid-shell scroll centrifuges or decanters, unlike chamber filter presses, run continuously. The finely distributed solid particles are separated from the suspension by strong centrifugal forces.

How does a decanter centrifuge work?

Decanter Centrifuge is a device that uses centrifugal force to achieve solid-liquid separation. Its core working principle is to separate solids and liquids of different densities into layers in the drum through the centrifugal field generated by high-speed rotation, and discharge them continuously through the screw conveyor to achieve automatic separation.

Decanter centrifuge advanced operation capabilities

Clarification

Clarification removes suspended solids from a liquid of lower density across a particle size range from 1 to 10,000 microns. By increasing centrifugal force, even submicron particles can be separated, making this process ideal for high-purity applications in chemicals, mining, and waste management.
Classifying
Through controlled reduction of residence time, the decanter achieves sharp separation cuts for particle-size classification down to the submicron range. This capability is essential for processes requiring precise particle distribution and custom engineering solutions.
Liquid/liquid separation
The efficiently separates immiscible liquid phases of different densities, with or without solids present. This is critical for oil recovery and industrial wastewater treatment, where mechanical dewatering and centrifugal separation reduce reprocessing and disposal costs.
Thickening
Fine solids separated from the liquid can be thickened in a hindered settling mode, utilizing the cylindrical section of the bowl for maximum compression. This improves solids handling and reduces downstream load, contributing to operational efficiency.
Compression and dewatering
Compactive dewatering combines drainage and compression to achieve a higher degree of dryness, even with compressible solids. The degree of dewatering depends on solids characteristics, machine settings, and required dryness levels. Optimized conveyor and cone geometry, along with differential speed control, ensure stable discharge of pasty or shear-sensitive solids—key for waste management and cost reduction.
Counter-current washing
Integrated washing systems allow efficient, cost-effective removal of contaminants by separate discharge of wash liquor over multiple sections. This reduces chemical and water consumption, aligning with sustainability and process optimization goals.
Mixing and re-suspension
Special discharge geometries enable solids to be mixed with liquid directly at the outlet, eliminating the need for additional mixing vessels. This feature simplifies plant design and enhances operational efficiency.
Automation and innovation
Control systems for smart operation
Control systems stabilize separation quality, automate setpoints, and provide diagnostics that support predictive service strategies. As the “brain” behind the process, strengthens industrial automation and helps maintain equipment reliability through better visibility, alarms, and optimization tools.
Engineered for tough conditions
A broad choice of materials of construction, wear protection, and sealing options extends service life in abrasive or corrosive duties. Features like CIP, optimized bearings and seals, and gas-tight/pressurized casings are designed to lower maintenance effort while keeping performance high.
Options that boost performance
Depending on application, It can be equipped with energy-recovery weir plates, specialized feed systems to reduce particle breakage, and multiple drive/gearbox configurations—each selected to match duty conditions and performance targets.

Decanter centrifuge specifications

1. All contact parts can be made by SS304/SS316L/Duplex Steel 2205.
2. Automatic adjustment of differential speed via VFD,Siemens PLC Spiral.
3. Two motor drive.
4. Approximately 80 to 90% of the oil is recovered.
5. Low labor costs due to continuous and automatic operation.
6. Highest g-force for higher solids output.
7. Belts for both primary motor and secondary.
8. NSK/SKF Bearing.

Model	Drum diameter mm	Length mm	Maximum speed rpm	Highest separation factor g	Mixture capacity m³/h
LW250-900	250	900	5000	3500	0.5-3
LW350-1500	350	1500	3800	2850	1-5
LW400-1200	400	1200	3400	2581	1-8
LW400-1600	400	1600	3400	2581	2-10
LW400-1800	400	1800	3400	2581	2-12
LW450-1800	450	1800	3200	2572	5-20
LW450-2000	450	2000	3200	2572	5-25
LW530-2280	530	2280	2800	2350	10-50
LW600-2400	600	2400	2600	2265	15-65
LW650-2600	650	2600	2400	2100	20-80
LW720-2500	720	2500	2200	1950	25-90
LW800-2560	800	2560	2000	1800	30-100
LW800-3200	800	3200	2000	1800	30-110
LW900-3200	800	3200	1800	1650	30-150

Why choose the DAGYEE decanter centrifuge?/Decanter centrifuge advantages

1. This liquid clarifying device adopts horizontal design which balances the layout of electric motor and bowl. Asa result, outstanding operation stability generates minimized vibration.
2. Dual electric motor control enables stepless speed adjustment on bowl and spiral components.
3. Scroll conveyor flight inside this continuous centrifuge is painted by abrasion resistant alloy or welded byhard alloy. Moreover, main components on our horizontal decanter centrifuge, such as rotating bowl and spiralparts, are made from corrosion resistant stainless steel or dual-phase steel, whereby offering exceptionalspeed limits and separation ratio.
4. Our mud dewatering equipment comes with three options including cycloidal gear, planetary gear andhydraulic diferential, resulting in large range of differential adjustment. Therefore, this industrial centrifuge canbe applied to diverse solids.
5. Multiple protections are available on our horizontal decanter centrifuge to ensure operatives safety, includingover-vibration protection, bearing temperature detection, screw conveyor torque protection rotating anddiferential speed detection, as well as nitrogen-filled explosion-proof protection, motor overload and over heatprotection.
6. JG type rubber shock absorber requires no anchor bolts.

Decanter centrifuge key features

1. It features a sludge baffle disc which increases the working capacity of the DR Decanter and improves separation performance
2. Four piece machine rotating assembly covers with hydraulic actuators simplifies the operator’s job making inspecting and maintaining the specific sections of the rotating assembly easy and convenient
3. Rotating assembly group is easily extracted from above the machine simplifying maintenance and reducing removal time
4. Head-walls and bowl sections made from high strength forgings and centrifugal castings to improve resistance and homogeneity of bowl structure
5. It features solid stainless steel fabrication to improve resistance, stiffness and longevity
6. Heavy-duty DR Decanter base frame fabrication dampens vibrations and minimizes vibration transmission to the machine mounting structure
7. Years of design and manufacturing experience in sludge separation processes assures customer satisfaction and meeting specific process and facility requirements
8. Optional remote monitoring and operational assistance reduces waiting time for resolution of possible problems

Decanter centrifuge applications

Used in a wide range of industries, decanter centrifuges are ideal for high material-volume processes, including:

Food and beverage industries
Oil and gas industries
Mining and minerals
Chemical processing
Agricultural field
Animal rendering and byproducts
Horizontal directional drilling or HDD