Engineering
8 years ago

Revolutionary oxy-fuel process slashes emissions and boosts combustion efficiency

Energy Procedia
The combustion of dry lignite under oxy-fuel process conditions in a 0.5 MWth test plant
Helge Kaß, Stephanie Tappe, Hans Joachim Krautz

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A test plant successfully burned lignite under oxy-fuel conditions, achieving a high CO2 concentration in the flue gas. Varying oxygen distribution affected NOx formation, and using CaCO3 reduced SO2 levels. The flue gas condenser operated well without slagging, reducing moisture content and showing potential for SO2 removal. Combustion time decreased when nitrogen was substituted with CO2, and high CO2 levels made the Boudouard reaction more important.