F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 14/00 (2006.01)
Patent
CA 2609337
A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln (10). The method comprises injection of air with high velocity/high kinetic energy into the kiln (10) to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel (12) or in a preheater/precalciner vessel.
L'invention concerne un procédé pour réduire des émissions d'oxyde d'azote et améliorer le rendement énergétique au cours du traitement de minerais dans un four rotatif (10). Ce procédé consiste à injecter de l'air à grande vitesse/avec une grande énergie cinétique dans le four (10) pour réduire ou éliminer la stratification des gaz du four. Ce procédé peut être utilisé pour mélanger des gaz dans une cuve de four rotatif (12) ou dans une cuve de préchauffage/précalcination.
Hansen Eric R.
Supelak Ralph A.
Tutt James Ronald
Ash Grove Cement Company
Cadence Environmental Energy Inc.
Smart & Biggar
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