Filtration of Winterized Extract

The Winterization process removes waxes, fats and lipids from crude extract to increase the purity of the oil. Once the crude oil and ethanol is frozen creating a sludge, the mixture is ready to be filtered. A vacuum source is used to pull the frozen mixture through the filter separating unwanted material from the oil. The right combination of flow and vacuum depth is essential to complete the process in a timely manner before the frozen mixture thaws and allows the unwanted material to mix with the purified oil. If the flow is too weak, the process may take to long and compromise the purified oil. If the vacuum level is too deep, evaporation may occur within the vessel. Selecting a vacuum pump with the most appropriate performance specifications will help ensure your process is properly completed.