From water separability to water filtration
Date: 2021-11-1

Lubricants such as gear oil, steam turbine oil and marine oil are inevitably mixed with water and vapor during use. If the demulsibility of the oil is relatively weak and the mixed water cannot be separated quickly in time, the lubricity of the oil will be reduced, resulting in equipment wear or corrosion. Therefore, the demulsibility of oil must be regularly checked during the initial stage of use.

The commonly used testing standards for oil water separability indicators are GB/T 7305 (equivalent to ASTM D1401), GB/T 8022, and SH/T 0191. These methods are applicable to different oil products and operation requirements also differ, the results are not relevant. Comparing the four methods, GB/T 7305 has a better capability in judgment, is simple and quicker in operation. In addition to standard methods, simulating actual operating conditions is important for evaluating oil demulsification performance.

GREENLAB automatic water separability tester can measure 6 samples at a time, and has image recording and recognition software, which can eliminate visual errors of different inspectors. In addition to adhering to the built-in GB/T 7305 method, it can also adjust the temperature (room temperature-95°C), speed (500-1800rpm), and test duration (up to 48h) to meet the needs of customized testing requirements.

The selection of lubricating oil is only the first step in the use of oil products. As policies and requirements for environmental protection, cost control, and oil purification increases, used oil is purified to reduce its particulate matter, moisture and other pollutants for re-usability. The emulsified oil can also extend the service life after filtering out the water.

South Korea's SOLGE TOMS-F oil purifier can filter four pollutants at once: particles, paint film substances, oxides, and moisture. TOMS-F oil purifier adopts membrane and nitrogen drying technology to remove 100% of free water and 90% of dissolved water. Through SOLGE’s patented technology, it can filter out oxides that are difficult to complete with ordinary filters, which can also remove sludge in oil and paint film substances.

The risk of oil emulsification is now basically controllable. Through the correct selection of oil products, oil moisture monitoring during use, and impurity filtration, the risk of equipment damage due to oil emulsification is greatly reduced.







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