Apparatus for the treatment of flue gases

An apparatus for removing dust from flue gases, comprising:

• a substantially upright vessel having a top and a generally cylindrical wall;
• means for cooling the inner surface of the wall, comprising two separate cooling circuits that are spaced from each other in axial direction of the vessel, so that one circuit forms an upper cooling circuit and the other circuit forms the lower cooling circuit, the upper cooling circuit comprising two annular chambers that are spaced from each other in axial direction of the vessel, an inlet for the cooling medium being provided on one chamber, an outlet for the cooling medium being provided on the other chamber, and both annular chambers being interconnected at the inner surface of the generally cylindrical wall of the vessel by hollow cooling fins;
• an inlet port substantially centrally located in the top of the vessel, the inlet port for introducing flue gases into the vessel;
• fan means provided in the vessel for forcing the introduced flue gases radially outwardly toward the inner surface of the generally cylindrical wall;
• and
• an outlet port for outletting the dedusted flue gases and having an inlet opening located substantially centrally of the vessel and spaced relatively closely below the fan means for forcing the introduced flue gases, whereby flue gas is introduced through the inlet port into the vessel and is forced radially outwardly by the fan means into contact with inner wall surface of the vessel so that the dust and the flue gas are separated during contact of the flue gas with the inner wall surface and the dedusted flue gases are outletted through the outlet port.