Combustion Characteristics of Oxy-fuel Burners for CO2 Capturing Boilers

DOI Web Site 1 References
  • AHN Joon
    Korea Institute of Energy Research
  • KIM Hyouck Ju
    Korea Institute of Energy Research, Building Energy Research Center
  • CHOI Kyu Sung
    Korea Institute of Energy Research, Building Energy Research Center

Abstract

Oxy-fuel boilers have been developed to capture CO2 from the exhaust gas. A 50 kW class model burner has been developed and tested in a furnace type boiler. The burner has been scaled up to 0.5 and 3 MW class for fire-tube type boilers. The burners are commonly laid out in a coaxial type to effectively heat the combustion chamber of boilers. Burners are devised to support air and oxy-fuel combustion modes for the retrofitting scenario. FGR (flue gas recirculation) has been tried during the scale-up procedure. Oxy-fuel combustion yields stretched flame to uniformly heat the combustion chamber. It also provides the high CO2 concentration, which is over 90% in dry base. However, pure oxy-fuel combustion increases NO concentration, because of the reduced flow rate. The FGR can suppress the thermal NOx induced by the infiltration of the air.

Journal

References(1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top