Oxygen/air-fuel combustion system and method for pre-heating combustion components, e.g. for a melting furnace

摘要

The invention relates to an oxygen or air-fuel combustion system (200) having a heat transfer circuit (210) for preheating combustion components, comprising oxygen or air and fuel, by a heat transfer fluid, with at least two heat exchangers, wherein a first heat exchanger (214) between an expander (212) disposed upstream of the first heat exchanger (214) and a compressor (216) located downstream of the first heat exchanger (214) disposed in an exhaust source (206) of the combustor and configured to Transfer exhaust heat to the heat transfer fluid, and wherein at least one further heat exchanger (218, 222) in the heat carrier circuit (210) is arranged and adapted to transfer heat from the heat transfer fluid to at least one of the combustion components.