Numerical analysis of an entire ceramic kiln under actual operating conditions for the energy efficiency improvement

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:203

Article

Milani, Massimo¹  Montorsi, Luca¹  Stefani, Matteo¹  Saponelli, Roberto²  Lizzano, Maurizio² 

[1] Univ Modena & Reggio Emilia, Dept Sci & Methods Engn, Reggio Emilia, Italy

[2] SACMI SC, Imola, Italy

关键词: Tunnel kiln;    Numerical modeling;    Transient analysis;    Heat transfer;    Energy efficiency;   

DOI  :  10.1016/j.jenvman.2017.03.076

来源: Elsevier

【 摘 要 】

The paper focuses on the analysis of an industrial ceramic kiln in order to improve the energy efficiency and thus the fuel consumption and the corresponding carbon dioxide emissions. A lumped and distributed parameter model of the entire system is constructed to simulate the performance of the kiln under actual operating conditions. The model is able to predict accurately the temperature distribution along the different modules of the kiln and the operation of the many natural gas burners employed to provide the required thermal power. Furthermore, the temperature of the tiles is also simulated so that the quality of the final product can be addressed by the modelling. Numerical results are validated against experimental measurements carried out on a real ceramic kiln during regular production operations. The developed numerical model demonstrates to be an efficient tool for the investigation of different design solutions for the kiln's components. In addition, a number of control strategies for the system working conditions can be simulated and compared in order to define the best trade off in terms of fuel consumption and product quality. In particular, the paper analyzes the effect of a new burner type characterized by internal heat recovery capability aimed at improving the energy efficiency of the ceramic kiln. The fuel saving and the relating reduction of carbon dioxide emissions resulted in the order of 10% when compared to the standard burner. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free