2 Flame Speed Characteristics of Syngas (H2-CO) with Straight Burners for Laminar Premixed Flames

Laminar flame speeds of undiluted syngas (H2/CO) mixtures have been studied at atmospheric conditions using chemiluminescence and schlieren techniques for a straight cylindrical burner apparatus. A wide range of mixture composition, from pure H2 to 1/99 % H2/CO, has been investigated for lean premixed syngas flames. To achieve a better flame stabilization and reduce flame flashback propensity, two nozzle burners of different sizes have been designed and fabricated for further studies. Laminar flame speeds of various syngas mixtures are compared to results from predictions of recent syngas mechanisms