C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
202/2, 53/221
C22B 11/02 (2006.01)
Patent
CA 1222716
24646 A3 3/18/82 PYROLYSIS REACTION APPARATUS AND METHOD Abstract of Disclosure Pyrolysis reaction apparatus and method are described in which carbonizable waste material is fed into the pyrolysis reaction chamber by an inlet conduit which passes through the wall of a heating furnace surrounding such chamber. As a result, the material is immediately vaporized in the reaction chamber due to the high temperature at the inlet portion of the chamber where the material is introduced. A fluid cooling jacket surrounds the inlet conduit to maintain the temperature within such conduit below the melting temperature of the material being transmitted therethrough in order to prevent clogging of the conduit. The material is fed into the reaction chamber by the inlet conduit along an input feed direction which is laterally offset from the axis of the shaft of an impeller for conveying such material through such chamber and is preferably directed toward the tips of the impeller blades in order to prevent clogging of the impeller. The treated material which may contain precious metal, such as the silver in photographic film, is heated within the reaction chamber in the absence of oxygen to decompose such material by chemical reaction into a hydrocarbon pyrolysis gas and a solid carbonized residue. The carbonized residue material of reduced size and weight may be further processed such as by oxidation to remove the carbon and convert the silver or other precious metal in such residue into a metal oxide which is refined to recover the metal.
434685
Kleenair Products Co. Inc.
Smart & Biggar
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