Pyrolysis of Oat Straw and the Comparison of the Product Yield to Wheat and Flax Straw Pyrolysis

In this work, the results of experimental studies on the pyrolysis of oat straw in a fixed-bed reactor at different temperatures are described. The pyrolysis products are analyzed, and the effect of the temperature on the product yield is also discussed. The bio-oil yield increased at low temperatures, while gas production was enhanced at high temperatures during oat straw pyrolysis. The highest percentage of bio-oil (40.5%) was produced at 450 °C, while the maximum gas production (42%) took place at the temperature of 550 °C. To evaluate the pyrolysis product yield, comparisons were made between the oat, wheat, and flax straws that were pyrolyzed in the lab under the same experimental conditions. A comparison of the biomasses based on the pyrolysis product yield illustrates that flax straw is capable of producing more hydrogen (33% of the outlet gas) and carbon-rich char (42% of the biomass) when compared to other biomasses. Oat straw is considered a better biomass for bio-oil production (46% of the volatiles) compared to wheat and flax straws in these particular experimental conditions.