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. |
