Combustion Characteristics of Oxy-fuel Burners for CO2 Capturing Boilers

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概要

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• 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.

著者

• AHN Joon

  Korea Institute of Energy Research

• CHOI Kyu

  Korea Institute of Energy Research, Building Energy Research Center

• KIM Hyouck

  Korea Institute of Energy Research, Building Energy Research Center

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• Combustion Characteristics of Oxy-fuel Burners for CO2 Capturing Boilers

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