F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/20
F27B 7/36 (2006.01) C04B 7/43 (2006.01) F27B 7/20 (2006.01)
Patent
CA 1110447
ABSTRACT A rotary tubular kiln and a preheater for material sup- plied to the kiln are connected by a duct leading from one end of the kiln, for conducting waste gases from the kiln to the preheater. A bypass conduit is connected to said duct for divert- ing part of said waste gases and extends from the duct in such a direction as to divert a stream of waste gases at an angle of at least 90° to the stream of gases flowing through the duct. An upright mixing chamber is connected at its bottom to said bypass conduit to cause said diverted stream of gases to flow upward through said mixing chamber. The mixing chamber has in its lower portion at least one lateral inlet for introducing cooling air into said diverted stream of gases, and the distance between the axis of said duct and a point on the axis of said mixing chamber at the level of said inlet is from 1.5 to 3 times the square root of the quotient of the cross-sectional area of the duct divided by pi.
308566
G. Ronald Bell & Associates
Polysius Ag
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