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Oil Sludge Centrifuge

Categories Wastewater Centrifuge
Brand Name: ZK SEPARATION
Model Number: LW or LWS
Certification: ISO9000
Place of Origin: Chengdu, China
MOQ: 1
Price: Negotiable
Payment Terms: L/C, T/T
Supply Ability: 30 units each months
Delivery Time: 1-3months
Packaging Details: Simple iron frame
Motor power: 380/460V
Motor frequency: 50Hz/60Hz
Control panel: PLC Touch screen
Materials: SS304, SS316, 2205
Application 1: Oil Sludage Dewatering
Application2: Refinery factory Oily sludge treatment
Application 3: OBM treatment
Advantage 1: Light phase liquid layer adjustment technology
Advantage 2: Variable Frequency Control Technology
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    • Product Details
    • Company Profile

    Oil Sludge Centrifuge

    Oil Sludge Centrifuge ​
    I. Oily sludge treatment
    Production of oily sludge
    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;
    ★ 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
    mm250350450520580650

    Length-to-diameter ratio
    4.14.14.14.14.14

    Speed
    rpm500040003500320030002800

    Separation factor
    350031363087298229482854

    Differential speed
    rpm1~501~351~341~341~301~27

    Main motor power
    kW1122304555/7575/90

    Ancillary motor power (kW)
    kW45.57.51518.522

    Weight
    kg125025004000520065008000

    Boundary dimension (L×W×H)
    mm2500×800×11503700×1050×14003800×1150×16004800×1250×18005300×1750×13825600×1850×1500
    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
    LW250×1025BLW350×1435BLW450×1845BLW520×2150BLW580×2400B

    Throughput
    m3/h0.5-33~108~1515-2020-30

    Roller diameter
    mm250350450520580

    Length-to-diameter ratio
    4.14.14.14.14.1

    Speed
    rpm50004000320030002800

    Separation factor
    35003136258026202546

    Differential speed
    rpm1~501~351~341~341~36

    Main motor power
    kW112230-3745-5575-90

    Ancillary motor power (kW)
    kW45.57.51518.5

    Weight
    kg12502500420052006500

    Boundary dimension (L*W*H)
    mm2500×800×11503700×1050×12004300×1150×14505100×1250×16005520×1450×1700
    Note: The throughput is related to material characteristics.
    Oily sludge treatment system diagram
    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;
    Oily wastewater treatment flow chart
    III. Drilling oil-based mud solid-waste treatment
    Oilfield drilling requires drilling oil-based mud according to the drilling depth and geological conditions. The mud's basic composition is oil, water, organic clay, and oil-soluble chemical treatment agent. OBM resists high temperature and calcium salt erosion, which is beneficial to the stability and lubrication of the well wall. The mud features good performance and small damage to oil and gas layers, and wide application in various types of drilling platforms. However, the slag generated in the equipment of drilling solid control system (vibrating screen, centrifuge, and dryer) has seriously affected the environmental safety and must be treated in a harmless manner. After treatment, the oil content of the slag is less than 1% and the oil is further purified and reused.
    The collected drilling OBM solid wastewater is subjected to high-speed stirring in proportion, and a suitable amount of demulsifier, active agent, and other additives are added, so that the oily water in the emulsified state is broken. The vibrating screen is used before separation to remove large particles of soil, sand, glass bottles, mineral water bottles, convenient bags, gauze, and other solid wastes, and then the high-efficiency LW series two-phase centrifuge is adopted to separate continuously the (oil + water) + slag. After heated by steam, the separated liquid phase enters the sedimentation tank, in which the supernatant is removed, and the liquid phase settled at the bottom of the tank is mixed with the slag phase separated by the centrifuge. The residual oil is recovered by the thermal desorption process.
    Separation performance:
    1,It can recover about 90% of oil (relating to demulsification effect, temperature, etc.);
    2,The solid content of the liquid phase after separation can reach ≤5~8%;
    3,The dryness of the slag phase after separation can reach 40 ~ 60%;
    Drilling oil-based mud solid waste treatment process
    IV. 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.
    Double-motor double-frequency conversion common DC bus constant torque control technology
    ★ CIP washing system
    The fully automatic control system is equipped with a CIP washing system, which can effectively solve the problem that it is not completely cleaned during the shutdown process and effectively avoid the equipment troubles caused by artificial factors.
    ★ Humanized centrifugal configuration
    Spiral bearing (in the drum, concealed) lubrication technology: the lubricant is filled from the outside of the hood. (Unique technology in domestic centrifuges) The hood adopts a hinged opening structure and is equipped with a high-pressure gas strut to assist the opening.
    Vibration and temperature sensor (optional) at the position of the main bearing housing.
    ★ Light phase liquid layer adjustment technology
    From the current three-phase centrifuge structure for liquid transportation of centripetal pumps adopted at home and abroad, the adjustment of the light phase liquid layer requires disassembling the centrifuge, and replacement takes more than 8 hours. The centrifuge, with the patented technology of our company, just requires opening the hood to adjust the light phase liquid layer.
    Variable pitch technology
    Variable pitch technology is a relatively advanced technology in the world. It can effectively reduce the screw pushing torque, improve the processing capacity, and further reduce the sediment water content.
    ★ 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.
    Quality Oil Sludge Centrifuge for sale
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