Title:
Lignin Upgrading via Thermal and Catalytic Pyrolysis-Lignin Nature Effect
Author(s):
Kalogiannis, K.G., Lappas, A.A., Stephanidis, S., Kalogianni, A.
Document(s):
Paper
Slide presentation
Abstract:
In this work thermal and catalytic lignin pyrolysis with a commercial ZSM-5 were studied aiming at the production of fuels and high added value chemicals such as phenols. The lignin feedstocks were byproducts received by organosolv treatment of various Greek agricultural residues. For comparison purposes pyrolysis of Kraft lignin is also presented. Agricultural residues (cotton and corn stalks, wheat and barley straw) and a woody biomass (beechwood) were treated with the Milox process that has been found to be an effective way of removing lignin from biomass and increasing the fermentability of the remaining cellulose. Single stage Milox was carried out with Formic acid (FA), Acetic acid (AA) and their mixtures. Lignin pyrolysis took place in a bench scale fixed bed unit. The results showed that in the case of the agricultural residues, the lignin received from corn stalks presented the highest oil yield, around 15 wt.% on dry feedstock, while in all cases high CO2 yield was noted. Wet oxidation lignin (WO) was also pyrolyzed and found to produce higher lignin oil with a lower oil O2. WO lignin was pyrolyzed with the addition of solid acid catalysts and oil quality improved to the expense of the oil yield.
Keywords:
catalytic conversion, fixed bed, flash pyrolysis, lignin
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Pyrolysis and other biomass liquefaction technologies
Event:
23rd European Biomass Conference and Exhibition
Session:
3AO.6.5
Pages:
935 - 939
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3AO.6.5
Price:
FREE
