Influence of Sulfur Components on the Catalytic Mixed Alcohol Synthesis Based on Wood Gas Derived from Biomass Steam Gasification
Binder, M., Rauch, R., Koch, M., Summers, M., Aichernig, C., Hofbauer, H.
The synthesis of mixed alcohols using wood gas is a promising option in the field of biomass to liquids to produce high-value and CO2 neutral mixed alcohols for the transportation sector and the chemical industry. The investigated mixed alcohol synthesis lab-scale process chain was operated with real wood gas derived from the commercial dual fluidized bed biomass steam gasification plant Güssing, Austria. The lab-scale process chain consists mainly of gas conditioning to remove tar and to dry the gas, gas compression, and the mixed alcohol reactor employing 1.5 dm3 of a pre-commercial molybdenum sulfide (MoS2) based catalyst. The results show that thiols are formed as favored sulfur component, especially at low reaction temperatures. In addition, the results indicate that during operation at low temperatures, a desorption of sulfur from the catalyst took place. During operation at higher temperatures the catalyst tended towards adsorption of sulfur.The MoS2 based catalyst seems to be robust regarding varying amounts of sulfur in the wood gas. Even with a feed, containing less than 10ppm sulfur, no significant degradation was observed.
catalytic conversion, gasification, biomass to liquid (BtL), mixed alcohol synthesis (MAS), dual fluidized bed (DFB)
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
25th European Biomass Conference and Exhibition
1248 - 1252
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