Abstract
Hydrogen sulfide (H2S) makes up a significant percentage of certain natural gas resources (sour gas) and is known to have significant effects on a variety of fuel systems. Key to the understanding of sour gas chemistry are H2S and methane (CH4) interactions, although relatively few data are available for this system. In this study, a fuel-lean (φ = 0.5) 30/70 H2S/CH4 blend in 99% argon by volume was shock-heated to temperatures between 1538 and 1889 K and pressures near 1 atm. Time histories of CO and H2O were measured using laser absorption diagnostics at 4.5 and 1.4 μm. The diagnostics were employed in two high-purity, stainless steel shock tubes. The predictions of several recent chemical kinetics mechanisms were compared to the measured profiles and induction times for CO and H2O. Based on these comparisons, it was concluded that the interactions of species containing both carbon and sulfur are negligible at the conditions studied herein. It was also concluded that the CH4 chemistry dominates at these conditions. To the best of the authors’ knowledge, this is the first shock tube study of the H2S/CH4 system.
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Mulvihill, C.R., Mathieu, O., Petersen, E.L. (2019). CO and H2O Time Histories in a Shock-Heated H2S/CH4 Blend Near Atmospheric Pressure. In: Sasoh, A., Aoki, T., Katayama, M. (eds) 31st International Symposium on Shock Waves 1. ISSW 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-91020-8_20
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DOI: https://doi.org/10.1007/978-3-319-91020-8_20
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