Oil, at ambient or elevated temperature, is introduced into the vacuum chamber, where by vacuum distillation, water, dissolved air and gases, and other low-boiling-range volatile contaminants are removed.

Special chemically inert accelerator cartridges in the vacuum chamber are employed to serve the following functions:

• First, their in-depth design structure allows free water to be rapidly separated from oil by coalescence even before it reaches the evaporation stage.
• Second, millions of glass fibers 3-10 micrometer diameter provides a large total surface area for exposure of the thin oil film to the vacuum.
• Third, sharp points of the glass fibers promote fast release of gases and vapors from oil.
• Fourth, the elements act as a fine filter removing solid contaminants. The cartridges are easily replaced and disposable.
• This method is more efficient than previously used spray nozzles and baffles, which require several passes to obtain the same degree of degasification.

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