| 초록 |
This study has been performed to develop a low NOx regenerative burner capable of suppressing the NOx emission of lower than 50 ppm. A pilot scale experimental furnace enabling the combustion of LNG up to 200,000 kcal/h were prepared to conduct regenerative combustion. Various types of model burners were designed and fabricated to derive a low NOx burner model. Combustion experiments were performed for model burners to check exhaust gas composition with increasing furnace temperature up to 1,200oC. By adopting the two-staged injection principle for both air and fuel, the NOx emission could be maintained under 40 ppm under normal regenerative combustion condition. The so-called flameless combustion was accomplished at the furnace temperature of higher than 1,050oC by high speed injection of air and fuel.. |
