Effect of severe torrefaction by superheated steam on pinewood pyrolysis kinetics and pyrolytic oil compounds

Xuejiao Chen, Hong Wang, Rui Yang, Wei Lin, Zhiyong Qi and Dongdong Zhang

Renewable Energy, 2024, vol. 227, issue C

Abstract: Hemicellulose, cellulose, lignin and extractives generally contribute a variety of compounds to pyrolytic oil during pyrolysis. Severe torrefaction process to remove those compounds may influence the diversity and quality of pyrolytic oil. In this study, pinewood, as a frequently studied biomass for pyrolysis research, was firstly torrefied by superheated steam (SHS) in different intensities prior to both slow pyrolysis and Py-GCMS. The kinetic study demonstrated that the activation energy of pyrolysis for the biomass increased greatly from 172.66 kJ mol−1 to a maximum of 400.18 kJ mol−1 after SHS torrefaction. The pyrolytic oil from both slow pyrolysis and Py-GCMS were analyzed. The content of hemicellulose and cellulose biomass reduced with increasing SHS torrefaction intensities. As a result, the light oxygenates, sugars and furans in pyrolytic oil decreased greatly, whereas the concentration of phenol and aromatics improved. In addition, the phenolic compounds shifted to smaller molecular weight and the acetic acid as an adverse factor in pyrolytic oil decreased and even disappeared under severe torrefaction. SHS torrefaction provide a new insight for biomass pretreatment for further pyrolysis.

Keywords: Superheated steam torrefaction; Slow pyrolysis; Py-GCMS analysis; Platform chemicals; Pyrolytic oil (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148124006311
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:227:y:2024:i:c:s0960148124006311

DOI: 10.1016/j.renene.2024.120563

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().