Efficient vacuum oil purifier applies to turbine oil, hydraulic oil, Lubricants,insulating oil,transformer oil,capacitor oil,compressor oil

Technical principles

Different liquids have different saturated vapor pressures. At a temperature of 70°C, water starts to boil at a pressure of approximately 3×10⁴Pa, while oil can only boil at a low pressure of 5Pa.At the same temperature, the saturated vapor pressure of oil is much lower than that of water.Therefore,when the pressure of the oil liquid surface is reduced to below the saturated vapor pressure of water by vacuuming, the water in the oil liquid will violently vaporize and overflow from the oil in the form of steam.

Through the suction of the vacuum, the oil enters the vacuum tank from the top and sprays down through the nozzle. The water in the oil vaporizes in the vacuum chamber and is pumped out by the vacuum pump,and the oil after water removal is discharged from the bottom.The middle of the vacuum chamber is filled with lipophilic material, so that the sprayed oil is dispersed on the surface of the filling material to form a thick oil film to increase the area of the gas-liquid interface and prolong the oil staying in the gas phase space.

The effect of vacuum water removal is mainly related to the working vacuum degree and oil temperature. The lower the vacuum degree and the higher the temperature,the better the water removal effect.The oil temperature is generally around 60° C. Excessive temperature will accelerate the oxidation of the oil.

For hydraulic oil, the vacuum degree is generally 60O-70OPa, which can reduce the water content in the oil to below 1000ppm. For transformer insulating oil, a higher degree of vacuum can be used, and the water content can be reduced to 10 ppm.

Vacuum dehydration can effectively remove all kinds of water in the oil, and can remove air and various volatile substances in the oil.