Process for the separation of saturated hydrocarbons from a hydrocarbon charge containing them

摘要

The invention relates to a process for the separation of a hydrocarbon charge into a fraction which precipitates at the operating temperature and a fraction which remains liquid at that temperature. This process is of the incremental-dilution type and entails the use of a solvent whose composition changes at least once in the course of the various dilutions and of an antisolvent whose proportion in the solvent diminishes from at least one of the dilutions to the next dilution. Application: Dewaxing of oils.