Abstract
Abstract Biomass is widely recognized as one of the promising renewable sources for the production of liquid fuels (gasoline, diesel, and kerosene) and chemicals. Fischer-Tropsch Synthesis (FTS) coupled with gasification is an efficient pathway for biomass conversion. In this work, biomass conversion processes for liquid transportation fuels production is simulated in ASPEN Plus. Given the same biomass feedstocks, three FTS technologies including supercritical FTS, once-through FTS, and conventional FTS are comparatively studied. Carbon conversion rate, product outputs, and CO2 emissions are compared. Results show that biomass conversion processes with supercritical FTS technology generate the most diesel and kerosene due to the utilization of supercritical media, while biomass conversion processes with conventional FTS technology generates the most gasoline. Better heat transfer in the supercritical media suppresses generation of CO2 in this FTS process. Different feedstocks, including pine bark, hybrid poplar, corn stover, switchgrass and hardwood, are used to study their effects on the product distribution. Corn stover shows the highest carbon conversion rate in this study.
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