Dewatering Decanter Centrifuge (P Series)

GN dewatering decanter centrifuge is P series decanter centrifuge with beach angle of 11 degrees. GN P series decanter centrifuge is usually used dewatering and thickening purpose.
  • GN dewatering decanter centrifuge is P series decanter centrifuge with beach angle of 11 degrees. GN P series decanter centrifuge is usually used dewatering and thickening purpose. It is widely used for maximum dewatering requirements of municipal and industrial wastewater sludge. The dewatering decanter centrifuge is designed for easy separation material include large particle size, high density difference of solid and liquid, low viscosity, high concentration, high treatment capacity and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with P series decanter centrifuge.

    Applicable material for dewatering decanter :

    Drilling mud, environmental protection sewage, oily sludge, cutting fluid, sand washing water, mineral washing water, soda white mud, salt mud dewatering, magnesium aluminum emulsion, steel-making wastewater, precision casting wastewater, construction mud, tunnel mud, mine wastewater, industrial wastewater, organic wastewater, aquaculture wastewater, chemical industrial wastewater, printing and dyeing wastewater, municipal sewage, river sludge, water plant sludge, lake sludge, kaolin grading, calcium carbonate, bentonite, Silica, titanium dioxide, calcium sulfate, barium sulfate, conductive film glass polishing solution, aluminum hydroxide, cryolite, silicate, oil sand separation, landing oil, oil sludge, coal tar, inorganic fertilizer, Chinese medicine extraction such as taxus chinensis, honeysuckle and liquorice, clarification, concentration and dehydration of salt crystals, etc.

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    P Series Dewatering Decanter Centrifuge Specification

    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 4500 RPM 3900 RPM 3500 RPM 3150 RPM 2900 RPM 2650 RPM
    Max G Force 2492 G 3063 G 3084 G 3051 G 3058 G 3000 G
    L/D Ration 4.2 4.2 4.2 4.2 4.2 4.4
    Main Motor 11 KW 22/30/37 KW 37/45/55 KW 55/90 KW 90/110 KW 110/132/160 KW
    Back Motor 5.5 KW 7.5/11 KW 11/15/22 KW 15/37/45 KW 18.5/22/37/55 KW 22/37/75/90 KW
    Beach Angle 11°
    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.

    P Series Dewatering Decanter Centrifuge Features

    • The beach angle of the P Series dewatering centrifuge is 11 Degree, which makes the decanter centrifuge cone section longer, that is, the drying and dewatering area of the centrifuge is longer, which is conductive to the dewatering performance of P series decanter centrifuge, and much drier solid materials discharged.
    • The shaft caps on the two ends and the bowl are made of duplex stainless steel SUS2205 or SUS2304 by centrifugal casting, which is superior to the performance of SUS304 and SUS316. The main parts are made by centrifugal casting and die forging process to avoid intergranular corrosion and incomplete residual stress release caused by traditional welding process.
    • The screw blade is pressed by the CNC spiral blade forming equipment. Compared with the traditional drawing screw blade, it has higher slag conveying efficiency than the traditional drawing screw blade.
    • According to the material properties, the screw blade can adopt gradual change type, which can obviously improve the efficiency of screw’s transport and press force to make the solids dryer.
    • Optimized beach angle and pitch, large beach angle and medium pitch with BD baffle plate make the dewatering zone separated from the sedimentation zone. The depth of the liquid pool is deeper and the dewatering zone is longer. The separated clear liquid is more clear and dry, and the processing capacity is larger. The deep liquid pool loses less kinetic energy when the clear liquid is discharged. The machine consumes less energy and is more energy efficient. At the same time, it has a material acceleration structure to reduce turbulence in the bowl to make the liquid more clear, reduced turbulence makes the screw flight discharge port better protected for anti-abrasion, so the screw conveyor has a longer service life.
    • For special high-concentration and high-viscosity materials, a double cone design can be used, that is, the cone drum has two beach angles. The double beach angle greatly improves the resistance of slag discharge, and increases the treatment capacity under the condition of increasing the slag dryness and liquid clarity.
    • The wear-resistant sleeve of the solid discharge port is a special hard tungsten carbide sleeve, of which the wear resistance is extremely high, and not fragile.
    • The overflow weir plate has a convenient and flexible design for adjusting the depth of liquid pool to meet the requirements of dryness and wetness and clarity of materials under various working conditions.
    • The collection box cover of the small model is assisted to open by a gas spring, and it can support and protect safety.
    • The large model adopts a labor-saving lid opening device, and a single person can lift the lid of the collection box, reducing the labor intensity of workers and facilitating equipment maintenance.
    • Each type of main bearing is designed with hydraulic disassembly structure, which reduces the tension required to remove the main bearing by 90%, and reduces the risk of damage to the bearing itself and the high precision parts when the bearing is removed.
    • After each main rotary parts are machined by high precision CNC equipment, the centrifuge is treated with three dynamic balance processing again, including the 1800RPM medium speed dynamic balance in the main rotary body component, the actual working speed high speed dynamic balance and the whole machine balance, so as to ensure the stable operation of the centrifuge under the high speed working condition.
    • The screw propeller is protected by replaceable wear-resistant alloy plate with long service life and easy maintenance.
    • Some models adopt the open-type screw blade, greatly enhancing the centrifuge processing capacity. Screw propeller utilizes stainless steel, after high temperature solution treatment, not easy to deform, good corrosion resistance, good strength stiffness, and long service life.
    • Two motors are arranged at one end of the centrifuge saving much space; the structure is compact for the operation and maintenance of the centrifuge, while avoiding the accident of the motor damage caused by the material leakage at the inlet end.
    • Main bearing adopts premium SKF series high-end bearings with long service life. Depending on the user's choice, it can also be equipped with an automatic lubrication system.
    • The grease lubrication system for the main bearing of the small model can be equipped with a semi-automatic or fully-automatic batch grease lubrication system, which can provide full and reliable lubrication for the main bearing, reduce the labor intensity of the workers and improve the service life of the bearing.
    • The main bearing of the large machine adopts the oil injection automatic circulation lubrication system, which has the function of cleaning and cooling the main bearing, and the service life of the main bearing is greatly improved.
    • With complete machine monitoring and alarm system. When overload, short circuit and lack of phase occur in the course of operation, the centrifuge will be automatically protected; the speed of centrifuge, bearing temperature, vibration of the whole machine, lubrication system oil pressure, main and back motors’ current, push torque and other operating parameters are monitored in real time, and alarm is started when the parameters are abnormal. In case of blocking materials, the device will automatically switch to the plugging procedures; if plugging procedures cannot be dredged, it will then automatically switch to the shutdown procedures to ensure the safety of personnel and equipment.
    • Usually adopts stainless steel electric control panel equipped with world famous VFD, PLC, HMI and other electric components. According to user requirements, GN can also provide VFD control panel with explosion-proof certificates home and abroad, such as China's CNEX explosion-proof, ATEX explosion-proof and IECEX explosion-proof.

    GN can not only provide users with Dewatering Decanter Centrifuges, rely on GN rich production line of separation and conveying equipment. GN can also provide users with turnkey solutions for the material dewatering process, including solutions for material transportation, classification and dewatering.