Two Phase Separation Oil Sludge Centrifuge Stable Operation Low Failure Rate
Brand Name:WP/XBSY
Certification:ISO9000
Model Number:LW
Minimum Order Quantity:1
Delivery Time:1-3months
Payment Terms:L/C, T/T
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No. 1355 , Longgong South Road ,Chengdu Economic And Tech .& Dev. Zone , Sichuan ,China
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Two Phase Separation Pipeline Cleanout Oil Sludge Centrifuge
Decanter Centrifuge Applies in Pipeline Cleanout Activities
Pipeline sludge is also known as “passage sludge”. In the drainage pipe system, sludge formed by sedimentation of some substances in the sewage due to gravity sedimentation, adhesion, and interception. According to the type of drainage pipe, it can be divided into confluent sewage pipe sludge, diversion sewage pipe sludge and diversion rainwater pipe sludge. The nature of the sewage pipe sludge is obviously different from that of the sewage plant sludge. In the treatment process, sludge dewatering is the most important part. After dewatering, the sludge treatment methods include dewatering, landfill and composting.
Separation performance of residual sludge after conventional process treatment by dewatering centrifuge:
Water Content of Sludge:65～81%
SS content of liquid:≤0.05～0.2%
SS recovery rate:≥85～98%
Chemical Consumption per ton DS:1～5kg/TDS
★ 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.
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. | ||||||
Technical descriptions of the centrifuge
★ Extremely low infrastructure investment and good on-site operating
environment
Compared with the conventional filter-type equipment
(plate-and-frame filter, belt machine, etc.), the high-performance
centrifuge is compact and efficient, covering only about a third of
land, needless of auxiliary gas source, high-pressure water, and
with simpler pipe structures at the inlet and outlet. Moreover, the
operation environment is more humanized, and the skid-mounted
integrated device has the characteristics of compact structure,
convenient installation, low requirements for infrastructure, and
convenient movement. The centrifuge is widely used in the harmless
treatment of oily sludge in oilfield drilling.
★ Stable operation, low failure rate, and low maintenance cost
Compared with the filter type equipment, the centrifuge does not
require any filter cloth or filter screen, so as to avoid the
trouble of clogging and of replacing the filter cloth. The
operation and maintenance costs of the equipment are low.
★ Modular design, easy to operate
Our design philosophy: To lower the requirements on the skills,
educational level, and labor intensity of operators, and realize
one-button start and stop of the control system, fault
self-diagnosis, and safety self-protection.
★ Operator configuration and labor intensity
The high-performance centrifuge is an automatic and continuous
working mode for feeding-separating-slag (liquid) discharging. The
whole process requires no human intervention. Multiple sets of
equipment require only one inspector (in conjunction with other
positions). Unlike frame and plate-and-frame filter, the slag
discharging process does not require manual cutting, greatly
reducing the labor intensity of the operator.
★ 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.
Sludge treatment is a complete set of production process, using the
principle of oxidative demulsification and centrifugal separation.
Its main equipment is composed of dosing system, feeding system,
separation system, conveying system, and control system.
After the oily sludge is collected and heated by steam, a suitable
number of additives like demulsifier and active agent are added in
it, so that the oily water in the emulsified state is broken. After
demulsification, a high-efficiency LWS series three-phase
centrifuge is adopted to realize the continuous separation of oil,
water, and slag in the oily sludge, and the water separated and the
oil-water mixture not demulsified are directly sent to the sewage
treatment system for treatment. Then, a LW series two-phase
centrifuge with high efficiency is used for dehydration. The crude
oil residue in the dehydrated slag phase can be recovered by the
combustion or thermal desorption process. The separated crude oil
is collected and then purified by a three-phase flottweg separator.
The purified oil can be reused.
Separation performance:
1, About 80~90% 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;
Double-motor double-frequency conversion common DC bus constant
torque control technology
Two Phase Separation Oil Sludge Centrifuge Stable Operation Low Failure Rate
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