The purpose of distillation is to separate hexane from miscella. The miscella is passed evaporation unit that control of temperature higher than the boiling point of hexane at 68 °C in Vacuum system. The output product from the evaporator is hexane vapor and concentrated of crude oil. The concentrated of crude oil will sent to storage tank and the vapor of hexane will sent to concentration process for condent to liquid state which recovered hexane liquid state to circulation in extractor.