An experimental and modelling study of the steam reforming of methane and C2 compound has been performed for mixtures representative of a gas produced from biomass gasification. The experimental study has been done in a plug flow reactor under a atmospheric pressure. The kinetic influence of the different gases present in the synthesis gas (H2O, H2, CO, CO2) on the hydrocarbons conversion has been investigated. A strong inhibiting effect of hydrogen on the hydrocarbon reforming has been found. The most difficult species to reform is methane. A temperature as high as 1700 K is necessary in these conditions to convert methane. A model was developed with attention to the reactions of unsaturated species with OH which are responsible for the reforming. The main experimental trends are well reproduced. Carbon reforming appends mainly by reaction of OH radicals with unsaturated C2 molecules, which are soot precursors.

High temperature reforming of hydrocarbons in a gas from biomass

243rd National Meeting (2012)

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