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DYNA
versão impressa ISSN 0012-7353versão On-line ISSN 2346-2183
Resumo
HERRERA, Bernardo; RIVAS, Juan; MUNOZ, Jorge e CACUA, Karen. Effect of the combustion system on reduction of thermal specific energy consumption in an industrial high temperature process. Dyna rev.fac.nac.minas [online]. 2021, vol.88, n.217, pp.273-281. Epub 24-Nov-2021. ISSN 0012-7353. https://doi.org/10.15446/dyna.v88n217.93030.
This paper presents an experimental study carried out in an industrial furnace for frits production using different configurations of burners based on different combustion techniques such as enriched air combustion, flat-flame oxy-combustion and preheater air combustion. The residence time of combustion gases inside the furnace also was modified. Several combustion configurations were tested and its effects on productivity and thermal energy specific consumption and efficiency were determined. The results show that higher residence time of the combustion gases can decrease significantly the specific consumption of fuel, while the change of the burners and combustion techniques did not show significant effects on decreasing the energy consumption. However, it is highlighted that the oxy-combustion flat-flame burners produced the lowest specific consumption of fuel. Even though the experiments were conducted in a furnace for frit production, the corresponding results can also be applied to guide or improve other industrial high temperature processes.
Palavras-chave : oxy-combustion; oxygen enriched air; energy efficiency; specific fuel consumption; residence time; melting.