B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
32/24
B05C 3/09 (2006.01) B01J 3/04 (2006.01) C04B 35/52 (2006.01) C04B 41/45 (2006.01) C04B 41/81 (2006.01)
Patent
CA 1090117
ABSTRACT OF THE DISCLOSURE: In combination with an impregnation furnace for carbon articles making use of impregnants, comprising an autoclave in which the impregnation process takes place, the autoclave being closed by a cover, an apparatus for completely drawing the smoke developed during the impregnation process including: fan means adapted to draw atmospheric air and connected to the upper portion of the autoclave by means of a first pipe; first valve means controlling the first pipe; a drop separating means connected to the bottom of the autoclave through a short length of tube, and to the impregnant supplying source through a second pipe, controlled by a second valve means. The drop separating means being provided with an exhaust pipe controlled by a third valve means. Drawing means provided with a inlet pipe, controlled by a fourth valve means and connected to the exhaust pipe of the drop separating means and an exhaust pipe connected to the exhaust pipe of said the separating means, through a tube controlled by fifth valve means and directly connected to a smoke filtering device. These parts being so arranged as, once the impregnation process under pressure has been performed in the autoclave, owing to the impregnant, being heated to the temperature of maximum fluidity, the impregnant is removed through the second pipe, the second valve means being opened and, while maintaining the autoclave closed by the cover, the first, third and fifth valve means are opened and the fan means is operated, which blows a flow of relatively cold and clean atmospher- ic air into the upper portion of the autoclave and then onto the impregnated articles, in said autoclave, in relative heat exchange relationship, said air flow charging with most of the smoke developed during the impregnation process. Air flow is then fed to the smoke filtering device, having left the largest particles inside the drop separating means. After a suitable time, the fan means is stopped, the first and fifth valve means are closed and the fourth valve means is opened, while operating the drawing means and, simultaneously, slowly removing the autoclave cover, while the residual smoke is drawn towards the autoclave bottom through the drop separating means and then sent to the smoke filtering device as well.
276122
Buccella Osvaldo
Ubaldi Luciano
Elettrocarbonium S.p.a.
Robic Robic & Associes/associates
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