Results from Successful Use of Oxyfuel Reheating: Substantial Throughput Increases and Large Energy Savings

摘要

Oxyfuel solutions deliver a unique combination of advantages. In general, the use ofoxyfuel combustion substantially increases the thermal efficiency of a furnace. This is primarily due to the fact that radiant heat transfer of furnace gases produced by oxyfuel combustion is significantly more efficient than those of air-fuel. Due to the absence of nitrogen in the combustion mixture which does not need to be heated up, the volume of exhaust gas is also substantially reduced, thus lowering total heat loss through the exhaust gas. Thanks to improved thermal efficiency, the heating rate and productivity are increased and less fuel is required to heat the product to a given temperature, at the same time saving on fuel and CO_2 emissions.