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http://dx.doi.org/10.5855/ENERGY.2014.23.4.130

Numerical Study to Develop Low-NOx Multi-nozzle Burner in Rotary Kiln  

Ahn, Seok-Gi (Department of Mechanical Engineering, Pusan National University)
Kim, Jin-Ho (Department of Mechanical Engineering, Pusan National University)
Hwang, Min-Young (Department of Mechanical Engineering, Pusan National University)
Kim, Gyu-Bo (Pusan Clean Coal Center)
Jeon, Chung-Hwan (Department of Mechanical Engineering, Pusan National University)
Publication Information
Journal of Energy Engineering / v.23, no.4, 2014 , pp. 130-140 More about this Journal
Abstract
Rotary kiln burner has been developed continuously to improve process efficiency and exhaust emission. In this study, the characteristics of the flame and exhaust emission were numerically analyzed according to the diameter of primary air nozzle, equivalent ratio of burner, and equivalent ratio at center and side nozzle for development of multi-nozzle burner in the COG(Coke Oven Gas) rotary kiln for sintering iron ore. The results indicated that the flame length and $NO_x$ emission increase, as the diameter of primary air nozzle and equivalent ratio of burner increase. And according to the change of equivalent ratio at the center and the side of the nozzle, the flame length and average temperature in the kiln show very little change but the $NO_x$ emission shows obvious difference. In conclusion, the best design conditions which have satisfying flame length, average temperature and $NO_x$ emission are as follows: $D_2/D_1$ is 1.33, equivalent ratio of burner is 1.25 and center nozzle conditions are Rich.
Keywords
Rotary kiln; Low-$NO_x$ burner; Multi-nozzle burner; $NO_x$; COG(Coke Oven Gas); Numerical simulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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