An experimental investigation of the ignition properties of hydrogen and carbon monoxide mixtures for syngas turbine applications

Ignition studies of simulated syngas mixtures of hydrogen (H2), carbon monoxide (CO), oxygen (O2), nitrogen (N2), and carbon dioxide (CO2) were performed using a rapid compression facility. Experiments were conducted using pressure time-histories and high-speed imaging to measure ignition delay times (sign), over a broad range of conditions relevant to current and proposed gas-turbine technologies, and which included fuel compositions consistent with typical gasification facilities. Specifically, the sign data spanned pressures from P = 7.1 to 26.4 atm, temperatures from T = 855 to 1051 K, equivalence ratios from / = 0.1 to 1.0, oxygen mole fractions from vO2 1⁄4 15% to 20% and H2:CO ratios from H2:CO = 0.25 to 4.0 (mole basis). Regression analysis yielded the following best-fit to the composite data set: