Batch Pyrolysis and Co-Pyrolysis of Beet Pulp and Wheat Straw

Materials

Tomáš Najser¹  Jan Najser¹  Jan Kielar¹  Jaroslav Frantík¹  Václav Peer¹  Aleksandra Pachuta²  Leon Kukiełka²  Agnieszka Zdanowicz²  Bogusława Berner²  Jerzy Chojnacki² 

[1] Centre of Energy Utilization of Non-traditional Energy Sources—ENET Centre, VSB—Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Czech Republic;Faculty of Mechanical Engineering, Koszalin University of Technology, Racławicka Str. 15-17, 75-620 Koszalin, Poland;

关键词: synergy;    generator;    biomass;    biochar;    bio-oil;    pyrolysis;   

DOI  :  10.3390/ma15031230

来源: DOAJ

【 摘 要 】

Granulated beet pulp and wheat straw, first separately and then mixed in a weight ratio of 50/50%, underwent a pyrolysis process in a laboratory batch generator with process temperatures of 400 and 500 °C. The feedstock’s chemical composition and the pyrolysis products’ chemical composition (biochar and pyrolysis gas) were analysed. A synergistic effect was observed in the co-pyrolysis of the combined feedstock, which occurred as an increase the content of the arising gas in relation to the total weight of the products. and as a reduction of bio-oil content. The maximum gas proportion was 21.8% at 500 °C and the minimum between 12.6% and 18.4% for the pyrolysis of individual substrates at 400 °C. The proportions of the gases, including CO, CO₂, CH₄, H₂, and O₂, present in the resulting synthesis gases were also analysed. The usage of a higher pyrolysis final temperature strongly affected the increase of the CH₄ and H₂ concentration and the decrease of CO₂ and CO concentration in the pyrolysis gas. The highest percentage of hydrogen in the synthesis gas, around 33%_vol, occurred at 500 °C during co-pyrolysis.

【 授权许可】

Unknown