Regenerative heat exchange technology has revolutionized traditional combustion methods. It primarily manifests in that fuel and air enter the furnace through different channels at appropriate velocities and mix with the combustion products inside the furnace. The 21% O₂ in the air is diluted, and the fuel burns under high-temperature (above 1000°C) and low-oxygen concentration (5-6.5%) conditions within the furnace chamber.

Regenerative heat exchange technology has revolutionized traditional combustion methods. It primarily manifests in that fuel and air enter the furnace through different channels at appropriate velocities and mix with the combustion products inside the furnace. The 21% O₂ in the air is diluted, and the fuel burns under high-temperature (above 1000°C) and low-oxygen concentration (5-6.5%) conditions within the furnace chamber.
So, what are the advantages of regenerative heat exchange technology?
(1) Significant energy savings, with over 30% energy efficiency improvement compared to traditional melting furnaces. Since the regenerator "maximally recovers" most of the waste heat from flue gases and returns it to the furnace through the combustion medium, it substantially reduces the furnace's heat expenditure. Consequently, furnaces utilizing regenerative heat exchange technology are more energy-efficient than traditional melting furnaces.
(2) Elimination of localized high-temperature zones and uniform furnace temperature distribution: Fuel combustion under high-temperature and low-oxygen conditions creates a diffusion flame without a stable flame front, eliminating localized high-temperature zones caused by stable flames. The flame nearly fills the entire furnace chamber, resulting in more uniform furnace temperatures.
(3) The frequent switching of operating states in regenerative burners frequently changes the flame position and the direction of furnace gas flow, enhancing furnace gas convection, reducing dead zones within the furnace, and promoting more uniform furnace temperatures.
(4) Improved heating quality: Uniform furnace temperatures ensure more even heating of aluminum ingots, reducing the effects of localized high temperatures and oxygen-rich environments on the volatilization and oxidation of aluminum melt.
(5) Extended service life of furnace refractory materials: Uniform furnace temperatures and the elimination of localized high-temperature zones ensure even heating of refractory materials and keep them operating within a reasonable temperature range. Additionally, preheating the air to near-furnace temperatures before it enters the furnace chamber reduces thermal shock on the refractory materials.
(6) Reduced greenhouse gas CO₂ emissions and NOx generation: With a 30% fuel savings, there is a corresponding 30% reduction in CO₂ emissions. Furthermore, the elimination of localized high-temperature zones effectively decreases NOx generation.