Automatic Control Horizontal High Speed Waste Palm Oil Sludge Centrifuge
Horizontal spiral discharge sedimentation centrifuge (referred to
as decanter centrifuge) is an effective separation equipment which
use centrifugal acceleration generated by high-speed rotation into
the acceleration of gravity to shorten thousands of times of the
settlement time of solid particles than in the gravity field. The
solid particles are discharged from the drum through the screw
conveyor continuously and without interruption.
Decanter centrifuge is widely used in waste water treatment, crude
oil recovery, coal tar recovery, palm oil recovery, fruit juice production, protein production, DDGS production,
starch production, food waste treatment, etc.
Separation performance:
1. About 80~95% oil can be recovered (relating to oil
density, demulsification effect, temperature, etc.), and the
recovered oil can be used for refining purpose after further
purified by the flottweg separator;
2, The water content of the oil phase after separation can reach ≤3
~ 5%;
3, The dryness of the slag phase after centrifugation can reach 40
~ 60%, and its total volume is reduced by over 80% compared to that
before separation;
Centrifuge Features:
★ Ingenious, unique, and diversified heavy liquid-phase discharging
structure
The heavy liquid phase separated by the
three-phase centrifuge can adopt two different liquid discharging
modes, namely gravity discharging and discharging through the
built-in centripetal pump with pressure, wherein the latter
includes liquid layer fixed mode and the online adjustable mode of
heavy phase liquid layer, which is selected according to the
process conditions.
★ High performance wear-and corrosion-resistant cemented carbide
As the oily sludge contains a lot of
hard particles and impurities such as sand, glass, and metal, if
the centrifuge does not adopt reliable wear-resistant
configuration, its service life and running stability will be
seriously affected. The wear-resistant solution is completely
targeted. According to the material characteristics (pH value,
corrosive substance, solid particle size hardness, etc.), cemented
carbide or ceramic can be selected, and the cemented carbide can be
either YG6, YG8, or various modified tungsten-cobalt alloys with
the hardness of 89~93 (HRA), which can fully meet the application
fields of the centrifuge.
★ High performance stainless steel
The high-performance three-phase centrifuge can recover oil by
90%~95% and adapts to the liquid density difference (oil and water
comparison) of the gas and oil of different densities (0.1~0.08
g/cm3). The centrifuge needs more than 3000G separation factor to
achieve better separation. To ensure the stability and the service
life of the centrifuge, high-strength corrosion-resistant duplex
stainless steel SAF2205 is used.
★ High-dryness screw conveyor and drum structure
The dehydration of solid particles relies mainly on strong
centrifugal force, high-torque screw extrusion force (pushing
torque), and ultra-long solid particle dehydration length. The
centrifuge can generate centrifugal force exceeding 3000G, 30 ~ 50%
higher than the screw pushing torque of common centrifuges. The
screw pusher torque, and the drum dehydration length is 10 ~ 20%
longer than that of common centrifuges.
★ High torque involute planetary gear differential
The ultra-high pushing torque requires a
high-torque involute planetary gear differential as the foundation.
The differential equipped on the centrifuge features high torque,
high speed, low heat generation, and excellent heat dispersion,
which ensure that the centrifuge can be used for a long time and
stably.
Double-motor double-frequency conversion common DC bus constant
torque control technology
★ Constant torque control technology
The constant torque control of the centrifuge is the most advanced
control mode in the world. The real-time monitoring of the actual
output torque of the constant torque variable frequency motor
through the high-performance auxiliary inverter is compared with
the set torque value, and PID is used to adjust the material
pushing speed of the screw conveyor in real time. The centrifuge
can achieve continuous, stable, and economic operation.
★ Three-phase centrifuge model and technical parameters
Item |
Unit | LWS250×1025B(X) | LWS350×1435B(X) | LWS450×1845B(X) | LWS520×2150B(X) | LWS580×2400B(X) | LWS650×2600B(X) |
Throughput | m3/h | ≥1 | ≥3~5 | ≥5-10 | ≥10-15 | ≥15-20 | ≥20-30 |
Roller diameter | mm | 250 | 350 | 450 | 520 | 580 | 650 |
Length-to-diameter ratio | | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4 |
Speed | rpm | 5000 | 4000 | 3500 | 3200 | 3000 | 2800 |
Separation factor | | 3500 | 3136 | 3087 | 2982 | 2948 | 2854 |
Differential speed | rpm | 1~50 | 1~35 | 1~34 | 1~34 | 1~30 | 1~27 |
Main motor power | kW | 11 | 22 | 30 | 45 | 55/75 | 75/90 |
Ancillary motor power (kW) | kW | 4 | 5.5 | 7.5 | 15 | 18.5 | 22 |
Weight | kg | 1250 | 2500 | 4000 | 5200 | 6500 | 8000 |
Boundary dimension (L×W×H) | mm | 2500×800×1150 | 3700×1050×1400 | 3800×1150×1600 | 4800×1250×1800 | 5300×1750×1382 | 5600×1850×1500 |
Note: The throughput is related to material characteristics.
X" indicates that the heavy phase liquid is discharged by the
centripetal pump with back pressure;
The overall dimensions will vary depending on the way the
centrifuge is drained.
★ Two-phase centrifuge model and technical parameters
Item |
Unit | LW250×1025B | LW350×1435B | LW450×1845B | LW520×2150B | LW580×2400B |
Throughput | m3/h | 0.5-3 | 3~10 | 8~15 | 15-20 | 20-30 |
Roller diameter | mm | 250 | 350 | 450 | 520 | 580 |
Length-to-diameter ratio | | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 |
Speed | rpm | 5000 | 4000 | 3200 | 3000 | 2800 |
Separation factor | | 3500 | 3136 | 2580 | 2620 | 2546 |
Differential speed | rpm | 1~50 | 1~35 | 1~34 | 1~34 | 1~36 |
Main motor power | kW | 11 | 22 | 30-37 | 45-55 | 75-90 |
Ancillary motor power (kW) | kW | 4 | 5.5 | 7.5 | 15 | 18.5 |
Weight | kg | 1250 | 2500 | 4200 | 5200 | 6500 |
Boundary dimension (L*W*H) | mm | 2500×800×1150 | 3700×1050×1200 | 4300×1150×1450 | 5100×1250×1600 | 5520×1450×1700 |
| Note: The throughput is related to material characteristics. |
