Hurll Nu-Way offers a wide range of recuperative and regenerative systems tailored to suit the specific requirements of furnaces.
Extracting metal from ore is a high temperature process, resulting in significant energy consumption. Where high temperature operations are fuel-fired, the exhaust gases leaving the process are wasted to the atmosphere, causing significant loss of energy. Alternatively, this wasted energy can be recovered and returned to the process, resulting in considerable fuel and money savings.
Reverberatory furnaces operating at 12000°C with cold air burners lose 63% of the burners’ energy input, with losses even higher in an incorrectly set up and poorly maintained system. A major proportion of this energy can be reclaimed by using the exhaust gases for preheating combustion air supplied to the burners through recuperation or regeneration.
A good recuperator in this instance, by preheating the combustion air to 4500°C will reduce the amount of energy lost to atmosphere from 63% to 45%, resulting in lowering fuel usage of the furnace by 32%.
A good regenerator, by preheating the combustion air to more than 9000°C will reduce the atmospheric losses to less than 25% of the input, decreasing the fuel usage of the furnace by more than 50%.
Hurll Nu-Way offers process burners that achieve optimum efficiency in all applications.
Hurll Nu-Way’s range of recuperative and regenerative furnace systems:
- Hot air and twin-bed regenerative systems from Fives N.A. Combustion for larger furnaces
- Self recuperative burners from Nu-Way
- Regenerative systems specifically designed for crucible furnaces from Hope Burners of Japan