GF-ELTI regenerative burners base their operation on the direct heat exchange between a ceramic mass (accumulator) and two gas flows (hot discharge flue gases and cold combustion air). Every single burner is equipped with its own accumulator; flue gases and combustion air flow through the accumulator in reverse current, alternatively at different times.
Regenerative burners work in pairs: when the first burner generates the flame, the second one aspirates its flue gases; in the next cycle, burners reverse roles (the second burner generates the flame and the first one aspirates its flue gases).
In doing so, flue gases aspirated by a burner flow through the accumulator, release heat energy to the accumulator (while cooling down) and flow to the stack.
In the next cycle, combustion air flows through the accumulator in reverse current, draws the heat energy previously released by the flue gases (while heating up) from the accumulator and conveys it back to the furnace.
GF-ELTI regenerative burners are available in a wide range of sizes (from 100 kW to 4 MW).
A special digital management technique enables the operator to keep NOx emissions well below the reference parameters of the European market despite the high pre-heat temperatures of combustion air.
Thanks to the high pre-heat temperatures of combustion air, GF-ELTI recuperative burners enable to reduce fuel consumption by 40 ÷ 50 % compared to traditional cold-air burners.
Operating temperatures: ≤ 1300 °C.
Temperatures of the disposable flue gases conveyed to the stack: ≤ 250 °C.
Applications: Forging Furnaces, Furnaces for Rolling Mills.