The effect of CO addition on the flame behavior of a non-premixed oxy-methane jet in a lab-scale furnace

The effect of hydrogen addition on the flame behavior of a non-premixed oxy-methane jet in a lab-scale furnace

“…The threshold value was 25% of the maximum intensity in each image. The liftoff height (H) was defined as the distance from the slot plate to the flame base using the same threshold value as that used for the flame length [19]. Fig.…”

Stability and Emission Characteristics of a Stratified Hydrogen-Enriched Oxy-Methane Flame on a Multihole Burner: An Experimental Study

“…Oxy-fuel combustion with high CO 2 dilution is implemented in supercritical-CO 2 cycles in currently operational zero-emission power plants with carbon capture. , High CO 2 dilution is used because the temperature rise across the combustor is ∼400 °C only . Compared to conventional air-fuel combustion, oxy-fuel combustion has been proven to have lower flame speed, inferior combustion efficiency, and slower reaction kinetics. , This is attributed to the fact that nitrogen from air is replaced by CO 2 as a diluent in oxy-fuel combustion, and the thermophysical properties of CO 2 are significantly different from those of nitrogen. Consequently, oxy-fuel combustors have narrower stability windows (i.e., they are more susceptible to blowout) compared to air-fuel ones, which is true for nonpremixed, partially premixed, and fully premixed flames .…”