F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 7/04 (2006.01) C04B 7/36 (2006.01) F27B 7/36 (2006.01) F27D 7/02 (2006.01) F27B 7/34 (2006.01)
Patent
CA 2422050
A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln (12). The method comprises injection of air (32) with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/pecalciner vessel.
L'invention concerne un procédé pour réduire les émissions de NOx et améliorer le rendement énergétique durant un traitement minéral dans un four rotatif. Ce procédé comprend une injection d'air à grande vitesse/haute énergie cinétique dans le four pour réduire ou éliminer la stratification des gaz du four. Ledit procédé peut être appliqué pour mélanger des gaz dans un four rotatif ou dans une cuve de préchauffage/précalcination.
Hansen Eric R.
Supelak Ralph A.
Tutt James Ronald
Way Peter F.
Ash Grove Cement Company
Cadence Environmental Energy Inc.
Smart & Biggar
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