Multi-objective optimization of burner configurations in sintering ignition furnace: A CFD-based orthogonal test with matrix analysis

In pursuit of a comprehensive parameter optimization scheme for the sintering ignition furnace to enhance production and reduce consumption, multi-objective optimization research on the burner parameters has been implemented by using computational fluid dynamics. Burner parameters such as ignition burner inclination angle, main burner airflow area and arrangement are focused on by the L9(33) orthogonal test. Based on the range and matrix analyses, the orthogonal test results are meticulously analyzed, culminating in the identification of the optimal scheme. The optimization benefits are demonstrated through comparative analysis. Results indicate that the main burner arrangement affects the ignition quality most significantly, followed by the ignition burner inclination angle, with the main burner airflow area having the least impact. The optimal configuration includes setting the ignition burner inclination angle at 15°, the main burner airflow area at 1540 mm², and a "7+7" uniform arrangement for the main burner. The flow field stability enhances markedly; the flame jet rigidity increases substantially; the burner jets mutual interference diminishes notably; the temperature field in the ignition section improves significantly. Compared to the baseline case, the average temperature in the ignition section has increased by 40 K, while the temperature uniformity coefficient has decreased by 4.99%.