PROCEDE ET INSTALLATION POUR DISTILLER DES PRODUITS LIQUIDES THERMOSENSIBLES

The product (4) leaving the furnace (2) is introduced into a series of separating cyclones (5, 6, 7). The product to be vaporised is introduced tangentially at the top (5a, 6a, 7a) of each cyclone to bring this product into contact with the side wall (5b, 6b, 7b) of the cyclone. The gas phase (11, 12, 13) formed in each cyclone is taken from the middle zone (8, 9, 10) of the cyclone and introduced into the reduced-pressure distillation column (3). The liquid phase obtained in each cyclone is taken from the bottom (5c, 6c, 7c) of the cyclone and is then reintroduced tangentially at the top (6a, 7a) of the following cyclone or introduced directly into the distillation column (3) in the case of the last cyclone (7). The side wall (5b, 6b, 7b) of each cyclone (5, 6, 7) is heated to a temperature close to the maximum permissible temperature to avoid thermal degradation. Use for vaporising to a greater extent the oil residue obtained in atmospheric distillation columns in refineries.