DEVICE AND METHOD FOR REMOVING A COMPOUND FROM BIO-DIESEL, METHOD FOR PURIFYING BIO-DIESEL FROM A TRANSESTERIFICATION STEP, AND EQUIPMENT FOR PRODUCING BIO-DIESEL INCLUDING SAME

摘要

The invention relates to a device and a method for removing a compound related to the production of bio-diesel resulting from a transesterification step, said compound being ethanol or methanol or water, that comprises a stripping column at a pressure higher than or equal to the atmospheric pressure using a gas that mainly contains nitrogen or CO2 or mixtures thereof, the column being preferably connected to an exchanger of the cryogenic type. The invention also relates to a method for purifying bio-diesel resulting from a transesterification step, and to equipment for producing bio-diesel that comprises said device and implements said methods.