Ellingsen NOR Instruments has therefore developed a process for the efficient extraction of water and gases from lubricant and hydraulic oils to a low price. In May 2002 the Hydrovac Oil Purifier, HYDROVAC™, was patented and protected worldwide. Compared to existing methods our customers experience an extreme high efficiency in extracting free and emulsified water, moisture and gases. At the same time, tests show that the method is gentle with the oil and does not affect the additives negatively. We build each unit especially for your needs: Do you need a mobil unit to serve different oil systems, do you have limited space on the ground,... We have different sizes available, but our largest unit can process upto 600 l/hr.

 

 

In a first step the contaminated oil is heated. Then dry air is injected in the oil. The mixture is flashed in a vacuum tank, where free water evaporates and the emulsified water is released by the rapid expansion of the air bubbles. The dry air absorbs the water and moist air leaves the chamber. The heating temperature is adjusted so that the oil stays in liquid phase and can be pumped out of the vacuum chamber. The process is continued until the target purity is reached, usually 100% water free. Later on the water is condensed and the moist air released to the atmosphere.