Abstract: In order to verify the technical feasibility, operational safety, equipment usability and system reliability of oxy-fuel combustion technology, the system configuration, structural features and practical operation process of traditional air combustion system and domestic existing oxy-fuel combustion demonstration project are analyzed by adopting the approach of characteristics contrast and qualitative analysis. Then the major technical characteristics and operational monitoring requirements of oxygen-fired system distinct from the traditional air combustion systems are put forward.

Key words: flue gas component measurement, oxygen concentration control, closed circulation, oxy-fuel combustion, boiler operational monitoring