Effects of carbamide pretreatment on product distribution and bio-oil composition from fast pyrolysis of pine powder

被引：0
作者：
Dongmei Bi
Mei Jiang
Xiaona Lin
Fupeng Huang
Shanjian Liu
机构：
[1] Shandong University of Technology,School of Agricultural Engineering and Food Science
来源：
Biomass Conversion and Biorefinery | 2022年 / 12卷
关键词：
Pyrolysis; Bio-oil; Nitrogenous compounds; Carbamide impregnation; Chemicals;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The nitrogen-rich pyrolysis is a significant technique to improve the utilization and value addition of biomass. The bio-oil derived from the biomass nitrogen-rich pyrolysis is abundant in high-value nitrogenous compounds. Carbamide-pretreated pine powder was used to produce bio-oil through fast pyrolysis in this paper. Effects of pyrolysis temperature and the concentration of carbamide solution on the product distribution and the content of important compounds (e.g., phenols, amines, indoles, pyrroles) in pine powder–derived bio-oil were investigated. The results showed that the bio-char yield decreased as the concentration of carbamide solution increased. The highest bio-oil yield (51.8%) appeared at a temperature of 400 °C and an impregnated carbamide solution concentration of 10%. The contents of acids, ketones, and aldehydes in the bio-oil obtained by carbamide-impregnated pine powder significantly decreased while the content of phenols observably increased. Compared with the bio-oil derived from raw pine powder, there were various nitrogenous compounds generated in the bio-oil produced by carbamide-impregnated pine powder. As the concentration of carbamide solution increased, the varieties of nitrogenous compounds increased.
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页码：3593 / 3602
页数：9
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