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Effect of the combustion system on reduction of thermal specific energy consumption in an industrial high temperature process
Efecto del sistema de combustión sobre la reducción del consumo específico de energía térmica en un proceso industrial de alta temperatura
DOI:
https://doi.org/10.15446/dyna.v88n217.93030Palabras clave:
oxy-combustion, oxygen enriched air, energy efficiency, specific fuel consumption, residence time, melting (en)oxy-combustión, aire enriquecido con oxígeno, eficiencia energética, consumo específico de combustible, tiempo de residencia, fusión (es)
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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.
En este trabajo se presenta un estudio experimental realizado en un horno industrial para la producción de fritas utilizando diferentes configuraciones de quemadores con diferentes técnicas de combustión, con aire enriquecido, oxicombustión de llama plana y aire precalentado. También se modificó el tiempo de permanencia de los gases de combustión en el horno. Se determinó el efecto en la productividad, el consumo específico y la eficiencia utilizando las diferentes configuraciones y técnicas de combustión. Los resultados muestran que un mayor tiempo de residencia de los gases de combustión disminuye el consumo específico de combustible, mientras que el cambio de quemadores y técnicas de combustión no mostró efectos significativos en el consumo de energía. Sin embargo, los quemadores de llama plana de oxi-combustión produjeron el menor consumo específico de combustible. Los resultados obtenidos también se pueden aplicar para guiar o mejorar otros procesos industriales de alta temperatura.
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