Effect of temperature on the physicochemical characteristics of pine nut shell pyrolysis products in a screw reactor

作者：Liyuan Qin, Ye Shao, Zhiwei Hou, Enchen Jiang · 发表于：Energy Sources Part A Recovery Utilization and Environmental Effects · 年份：2019 · DOI：10.1080/15567036.2019.1618993 · 被引用次数：17 · 研究领域：Thermochemical Biomass Conversion Processes、Lignin and Wood Chemistry、Biodiesel Production and Applications

Pyrolysis experiments of pine nut shells (PNSs) were carried out in a screw reactor at 300–700°C with approximately 98% energy yields. The analysis results showed that higher temperatures result in elevated heating values (HVs) of products but reduced biochar and bio-oil yields. The HVs of pyrolytic gas were remarkably influenced by proportions of CH4 and H2. Bio-oil of PNSs consisted primarily of phenols, acids, aldehydes, ketones, furans, and aromatic hydrocarbons. Five hundred degree Celsius was considered as optimal temperature for PNS pyrolysis, and biochar was the primary product with a yield of 37.11% and better Cu2+, Ni2+, and Zn2+ adsorption properties.