F - Mech Eng,Light,Heat,Weapons – 23 – K
Patent
F - Mech Eng,Light,Heat,Weapons
23
K
110/17
F23K 3/02 (2006.01) F23C 10/00 (2006.01) F23G 5/30 (2006.01) F23G 7/06 (2006.01) F27B 15/00 (2006.01)
Patent
CA 1045906
ABSTRACT OF THE DISCLOSURE This invention relates to and discloses a novel apparatus for the heat treatment of a bed of material. The apparatus includes an upright cylindrical furnace with an inlet for the bed-forming material and a gas outlet at the top. It comprises a plurality of gas nozzles above the bed which are oriented at a downward angle a between the axis of each nozzle and a horizontal sectional plane through the furnace defined by 0°< a ? 30°, and at a skew angle .beta. between the axis of each nozzle and a horizontal line tangent to the furnace circumference at the point where the nozzle axis intersects the furnace wall defined by 45° ? .beta. ? 85°. Gas streams introduced through the nozzles produce a downwardly swirling flow having a truncated conical configuration to confine the bed material. This apparatus allows both the steps of heat treatment and separation and recovery to be accomplished for minute solid par- ticles within the same apparatus in a compact and efficient system. The apparatus is suitable for soots and sludges which have remained untreated in the prior art, asbestos, industrial sludge, wastes and like material.
267104
Haga Toshikatsu
Hori Saburo
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