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The Advanced Computer Controlled Continuous Distillation Unit, "UDCC/A", designed by EDIBON, is an installation that allows the study of fractional distillation using a packed column which is able to operate with different packings. There is a feeding system that consists of a storage tank and a centrifugal pump. The feed is preheated before entering the column by going through a heat recovery system, in which the waste heat from the residue is used to take the feed stream to the desired temperature. The separation takes place in the column obtaining a steam current at the top, rich in the most volatile component, this steam is conducted to a condenser and then separated into two currents: a current that is returned to the column (reflux) and another current that is taken to the distillate tank. It is possible to regulate the reflux ratio by using a solenoid valve. On the other hand, at the bottom of the column a liquid stream falls into the boiler, in this unit, part of this liquid is evaporated and returned to the column as a vapour, and the other part of the liquid is taken to the preheater to be cooled down and then conducted to the residue tank. The pilot plant includes a va