3-phase disc stack separator for vegetable oil separation

GN recently completed a disc staock separator for oversea clients regarding to vegetable oil processing.

With high running speed and centrifugal separation factor, disc stack separator are often used to separate two immiscible liquid phases with small density contrast, In regards to this project, according to the customer’s requirement, we recommend the max model GNSD225, with a drum diameter 810mm and a pistion diameter of 730mm also the rotation speed is 4500RPM.

2023.07.13 vegetable oil disc stack separator

Considering the hygiene level of vegetable oil processiong, the material of the bowl ,drum, pistion is made by duplex stainless steel SS2507, in the meanwhile, the disc stack separator equip with VFD control cabinet, (Control cabinet casing material is Stainless steel, equipped with VFD+PLC+HMI Touch screen). As for the control cabinet, it is control by variable frequency drive(ABB), and equip with Siemens PLC and HMI Touch screen. In order to make the overseas know the parameter more easier, we provide English/Chinese interface, you can choose which you need.

2023.07.13 3-phase disc stack separator

The handing capacity is 30-40 m3/h according to your material to process,  and the disc stack separator is equipped with 75KW motors, also with SKF bearings.

For more information on centrifugal separators, please feel free to contact GN Separation at any time.

Clarifying Decanter Centrifuge

Since its beginnings, GN has designed, developed and produced different kinds of centrifuges for  solid/liquid and liquid/liquid separation.

GN clarifying decanter centrifuge is C series decanter centrifuge with beach angle of 20 degree. It suits for material of small particle size, low density difference between solids and liquid, moderate viscosity, moderate concentration.

Bowl Diameter 220 mm
(9 Inch)
360 mm
(14 Inch)
450 mm
(18 Inch)
550 mm
(22 Inch)
650 mm
(25.6 Inch)
760 mm
(30 Inch)
Bowl Length 924 mm
(36.4 Inch)
1512 mm
(59.5 Inch)
1890 mm
(74.5 Inch)
2310 mm
(91 Inch)
2730 mm
(82 Inch)
3328 mm
(131 Inch)
Bowl Speed 5600 RPM 4600 RPM 4000 RPM 3500 RPM 3200 RPM 2800 RPM
Max G Force 3863 G 4265 G 4032 G 3773 G 3670 G 3336 G
L/D Ration 4.2 4.2 4.2 4.2 4.2 4.4
Main Motor 11 KW 22/30 KW 37/45 KW 55 KW 90/110 KW 110/132 KW
Back Motor 5.5 KW 7.5 KW 11/15/18.5 KW 15/18.5 KW 18.5/22/30KW 22/30/37 KW
Beach Angle 20°
Drive Type VFD+PLC+ HMI
Bowl Material SUS2304(Duplex Stainless Steel)/ SUS2205(Duplex Stainless Steel) Centrifugal Casting
Screw Material SUS2304(Duplex Stainless Steel)/SUS2205(Duplex Stainless Steel)
The P-Series,Y-Series,C-Series decanter are interchangeable by replacing bowl assembly.Final specifications should be based on commercial and technical offer.

Customized materials of the decanter centrifuge are available for option.


                The above specification and parameters for reference only.

The beach angle of the C series clarifying decanter centrifuge is 20 degree, so the bowl cone section is short, and the straight section of the bowl is longer, it will give the bowl to have a longer clarifying section.

The rotating part of these decanter tricanter centrifuges is mounted on a compact, in-line frame, with main bearings at both ends. Vibration dampers are placed under the frame. The rotating part is enclosed in a casing with a cover and a bottom section with integrated outlets for both solids and the liquid being removed.


  • Waste water treatment
  • food processing
  • Petrochemical
  • Petroleum
  • Waste recycling
  • Fish processing
  • Chemicals
  • Beneficiation
  • Organic Chemicals
  • Polymer industry
  • Inorganic chemical industry



  • Clean appearance
  • Easy to install and operating equipment
  • Small footprint
  • Operate for different sludge types
  • Operating for thickening or dewatering
  • Reduced labour costs
  • More process flexibility and higher levels of performance


GN decanter centrifuge

GN 3 phase decanter centrifuge is mainly designed for Solid-liquid-liquid three-phase separation of materials. With our over 16 years of experience in the separation industry, it is the most advanced type equipment for 3 phase separation.

In the three-phase decanter centrifuge, the main motor drives the drum to rotate at full speed and the material is continuously introduced into the spiral by the feed tube and evenly distributed to the spiral discharge port. Under the action of centrifugal force, the solid phase settles to the wall of the drum and is pushed out by the spiral pusher towards the slag outlet of the conical drum, while the liquid phase flows out along the spiral towards the overflow hole at the large end of the drum, forming a small end for the solid phase and a large end for the liquid phase. The solid particles are separated from the liquid in the mixture, or the two mixtures with different specific gravity and insoluble in each other are separated.

The 3 phase Oil Decanter Centrifuge can clarify, separate and dehydrate materials of 0.002-3mm or classify solid phase particles of 1um-5um. With a wide range of applications, continuous work, large processing capacity, low cost, easy maintenance, etc., it is the best equipment for solid-liquid separation. It is widely used in chemical, light industry, medicine, food, paper making, mining and other industries.


Three-phase Oil Decanter Centrifuge show great superiority in the treatment of triple mud, as they not only separate out the solids in the mud, but also the dirty oil in the mud, which is incomparable to other separation methods. At the same time, the water and oil content of the dry sludge after treatment by the three-phase decanter centrifuge is reduced to varying degrees.


The advantage is as below

  1. High precision of differential, compact structure, smooth running and high safety.
  2. The main bearing adopts imported bearings to ensure its running accuracy and easy operation.
  3. The parts in contact with materials are made of high quality stainless steel.
  4. The whole machine is equipped with various safety overload protection devices to ensure safe production.
  5. The whole machine system is designed with common type and explosion-proof type to meet different requirements.
  6. Large aspect ratio, high rotational speed, with a variety of angles of the drum cone structure.
  7. Screw pusher is made of carbide material for hard surface treatment, with high wear resistance.
  8. 8. The spiral structure with BD plate is suitable for the thickening and dewatering of activated sludge and materials that are difficult to separate.
  9. 9. According to the actual requirements can be matched, double frequency conversion and intelligent automatic control system.

GN decanter centrifuge

Recently GN have complete 2 sets 454 decanter centrifuge which will be sent to oversea’s customers with for mustard oil processing. decanter centrifuge is commonly used solid-liquid separation equipment, and it is also widely used in the food industry.

In this order, GN 2-phase decanter centrifuge is solid-liquid separation equipment that separates solid-liquid mixtures through high-speed rotation. Among the materials fed into the decanter, due to the density difference between the solid phase and the liquid phase, under the high-speed rotation of the bowl, they will be subjected to different centrifugal force.

454 model decanter centrifuge with a bowl L/D ratio of 4.2 and Bowl Diameter is 450mm, and the max G force is 3087G, Typical Bowl Speed is 0-3200RPM, It adopts the electrical dual-motor driving system. The main motor is driving the bowl and the back motor is driving the screw via pulley device. This model is equipped with a VFD control cabinet.

For more information on 3-phase decanter centrifuge package, please feel free to contact GN Separation.


2-phase GNLW454 Decanter Centrifuge for mustard oil Separation

Recently GN completed a 2-phase GNLW454 Decanter Centrifuge for mustard oil Separation, it will be sent to our oversea clients. It is C series decanter centrifuge with beach angle of 20 degree, and it designed for the continuous separation of suspensions into solids and charified liquid, without interrupting the feed of the suspension.

The 2-phase GNLW454  decanter centrifuge is driven by two motors. The two motors are arranged on the same side of the equipment, with the bowl dismeter is 450mm, and bowl length is 1890mm, so bowl L/D Ration is 4.2 , which can make the material in the drum with a longer time,  in order to make the slag more dryer and the liquid more clarification.

In the VFD control panel, GN equipped 3 converters for main motor, back motor and feeding pump, operator can set up the running parameters on the HMI touch screen to control the feeding flow and running condition of the decanter.

For more information on decanter centrifuge, please feel free to contact GN Separation.