The distillation can be carried out at lower temperatures, as the vacuum leads to a decrease in the boiling point of the solvent. This reduces the energy requirement and therefore the operating costs.
The lower temperatures have a number of positive side effects: firstly, thermal decomposition of the solvent is prevented, secondly, foaming due to possibly contained water is reduced. In addition, when reprocessing solvent-based media with nitrocellulose lacquer components, process temperatures of less than 100 °C can be guaranteed.