The Pyrolysis Behaviors of Blended Pellets of Pine Wood and Urea-Formaldehyde Resin

Xiaoteng Li, Siyi Luo, Zongliang Zuo, Weiwei Zhang and Dongdong Ren
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Xiaoteng Li: School of Environmental and Municipal Engineering, Qingdao University of Technology, 777 Jialingjiang Rd., Qingdao 266033, China
Siyi Luo: School of Environmental and Municipal Engineering, Qingdao University of Technology, 777 Jialingjiang Rd., Qingdao 266033, China
Zongliang Zuo: School of Environmental and Municipal Engineering, Qingdao University of Technology, 777 Jialingjiang Rd., Qingdao 266033, China
Weiwei Zhang: School of Environmental and Municipal Engineering, Qingdao University of Technology, 777 Jialingjiang Rd., Qingdao 266033, China
Dongdong Ren: School of Environmental and Municipal Engineering, Qingdao University of Technology, 777 Jialingjiang Rd., Qingdao 266033, China

Energies, 2023, vol. 16, issue 4, 1-12

Abstract: TG-FTIR and PY-GC/MS were used to analyze the pyrolysis behaviors of pine wood, urea-formaldehyde resin (UF resin) and their blended pellets. The pyrolysis process was divided into three stages: water evaporation, devolatilization and pyrolysis residue decomposition. During the pyrolysis process of the blended pellets, with the increase of the addition ratio of UF resin, the peak value of the weight loss decreased in the decomposition stage of the pyrolysis residue, while the temperature shifted to the low-temperature region. This was mainly due to the structural stability of pyrolytic carbon produced by UF resin, which hindered the thermal decomposition of lignin-produced residues in pine. FTIR showed that CO 2 was the main product of pyrolysis. For UF resin, nitrogen compounds accounted for a large proportion. With the addition of UF resin, the nitrogen in the blended pellets increased significantly. Since the synergistic effect promoted the further decomposition of the organic oxygen-containing structure, the NO release was still increased. PY-GC/MS showed that co-pyrolysis produced more nitrogen-containing compounds and promoted the decomposition of macromolecular phenol derivatives, lipids and ketones, resulting in more small-molecule acids and alcohols.

Keywords: pyrolysis; pine wood; urea-formaldehyde resin (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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