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Help CenterHigh Efficiency Vacuum Dehydration Oil Purifier, Demulsification
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Brand: MT Model: MLYJ-Z-**** Working Principle: Vacuum Filtration Type: Hand-push Mobile Filtration Stages: 5-stage Cleanliness Level: NAS 3–10 Connection Type: Quick couplings with matched oil hoses Working Pressure: ＜0.6 MPa Surface Finish: Plastic spraying Mounting: Wheeled structure with brakes
Design Standards: GB/T26114-2010 General technical specification for liquid filters JB/ZQ-4554-1997 Technical specification for filters JB/T6632-1993 Specification of filters for mechanical seal systems
Filter Element Standard: GB/T1404.1/2/3-2007 Test method for structural integrity of filter elements Noise Test Standard: GB/T4214.1-2000 Noise measurement method
Application Scope:
On-line circulation filtration and cleanliness improvement of steam turbine oil
Filtration and purification treatment of aviation kerosene and lubricating oils
Water and impurity removal filtration for hydraulic and lubricating oils
Regeneration and comprehensive cleanliness treatment of lubricating oils
Purification and impurity removal of transformer oil
Regeneration and purification of various types of oils
Brief Introduction：
Different liquids possess different saturated vapor pressures. At 70°C, water starts boiling at approximately 3×10⁴ Pa, while oil only boils under extremely low pressure of around 5 Pa. At the same temperature, the saturated vapor pressure of oil is far lower than that of water. Therefore, when the pressure above the oil surface is reduced below the saturated vapor pressure of water via vacuum pumping, moisture inside the oil will boil violently and escape from the oil in the form of water vapor.
Driven by vacuum suction, oil enters the vacuum tank from the top and sprays downward through nozzles. Moisture in the oil vaporizes inside the vacuum chamber and is extracted by the vacuum pump, and the dewatered oil discharges from the bottom. The middle section of the vacuum chamber is filled with oleophilic packing material. The sprayed oil spreads over the packing surface to form an ultra-thin oil film, expanding the gas-liquid interfacial area and extending the residence time of oil in the gas phase.
The dehydration performance mainly depends on vacuum level and oil temperature. Lower absolute pressure and higher temperature deliver better dehydration efficiency. Normally, the operating oil temperature is controlled at about 60°C; excessive temperature will accelerate oil oxidation. For hydraulic oil, the vacuum level is generally maintained at 600–700 Pa, which can reduce water content to below 100 ppm. For transformer insulating oil, higher vacuum can be adopted to lower water content down to 10 ppm. Vacuum dehydration can effectively remove water in all forms, as well as entrained air and volatile substances from oil.
Vacuum System
The vacuum system consists of vacuum tank, vacuum pump, condensation tank, condensate tank and air make-up system. Thanks to optimized structural design, the contact surface area of oil inside the vacuum unit is greatly enlarged, and the flow path of oil is maximized to ensure sufficient separation of water and gas from oil. Equipped with an advanced foam suppression system, the unit avoids oil carryover (oil spraying), a common fault on conventional oil purifiers.
Filtration System
Three-stage filtration is adopted. The suction-side coarse strainer protects the oil pump and extends service life of the main filter elements. Two fine filters are installed downstream of the pump to rapidly raise oil cleanliness. The filter media is special glass fiber with gradient pore structure, which captures contaminants of different sizes in layers and significantly increases dirt holding capacity and service life. The well-designed filter structure lowers surface flow velocity and maintains stable filtration precision.
Heating System
Segmented gradual heating is adopted with surface heat load below 1.0 W/cm² to prevent oil deterioration caused by overheating. Oil temperature can be adjusted freely between 0–100°C with automatic temperature control. A safety protection device automatically stops heating when insufficient liquid enters, so as to avoid heater damage from dry burning.
Working Principle Diagram：
Automatic Control System
This unit is equipped with a set of automatic control instruments including frequency converter, liquid level transmitter, temperature sensor and vacuum sensor to collect various operating data. Data is processed by the central processor to automatically control and monitor the overall operation of the equipment. Multiple protection functions are integrated, such as overload protection, overvoltage protection, phase sequence protection and emergency shutdown protection for abnormal operation, ensuring safe and reliable operation.
Application of High Efficiency Vacuum Oil Purifier
Suitable for turbine oil, hydraulic oil, lubricating oil, insulating oil, transformer oil, capacitor oil and compressor oil.
Main Functions of High Efficiency Vacuum Oil Purifier
Dehydration, degassing and removal of mechanical impurities. When connected in parallel with regeneration unit, it can additionally realize acid removal, decolorization and improvement of dielectric strength.
Dehydration Principle：
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