The source material often contain considerable volumes of dissolved gases. These may be of an atmospheric origin, or a gas used for inertization. If these gases are released into a vacuum, they transform into a large volume and are not condensed in existing conditions. They are removed via the vacuum system and cause immense load on the system. Applying a degasification stage prior to distillation is a very effective and useful solution. The pre-heated source material is fed into the degasser and spreads across a large surface. The dissolved gases desorb and are drawn out by the vacuum system. Since this takes place at just a slightly lower pressure, the resultant volumes can be easily handled. The gases released can then be either condensed or released into the atmosphere, depending on respective features and conditions.