Study and Design on High Temperature Air Combustion of Hot Blast Stove

Fu Ming Zhang; Zu Rui Hu; Shu Sen Cheng

doi:10.4028/www.scientific.net/AMM.496-500.1058

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 496-500Study and Design on High Temperature Air...

Study and Design on High Temperature Air Combustion of Hot Blast Stove

Abstract:

During Hot Blast Stove (HBS) combustion, NO_x forms rapidly when the flame temperature above 1420°C. In order to restrain the amount of NO_x formation during combustion of HBS, the formation mechanism of NO_x is investigated, and the NO_x formation rate and amount in HBS are calculated by means of thermodynamic model. A new type of dome combustion HBS is developed based on high temperature air combustion (HTAC) technology. A comparison on the combustion process and characteristic of conventional HBS and HTAC HBS is performed by application of Computational Fluid Dynamics (CFD) simulation model. Temperature and concentration distribution, flame shape and NO_x concentration distribution of two kinds of stove are calculated. The result shows quite symmetrical HTAC stove temperature distribution. Under the same dome temperature, NO_x amount is 80ppm only, reduced by approximate 76% in comparison with conventional stove.

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Periodical:

Applied Mechanics and Materials (Volumes 496-500)

Pages:

1058-1062

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.496-500.1058

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Online since:

January 2014

Authors:

Fu Ming Zhang*, Zu Rui Hu, Shu Sen Cheng

Keywords:

High-Temperature Air Combustion (HTAC), Hot Blast Stove, Hot Blast Temperature, Low NO_x

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* - Corresponding Author

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