Investigation of Component Interactions During the Hydrothermal Process Using a Mixed-Model Cellulose/Hemicellulose/Lignin/Protein and Real Cotton Stalk

被引：1
作者：
Guo, Shengjun [1 ,2 ]
Zuo, Jiachen [1 ]
Yang, Xiao [3 ]
Wang, Hui [1 ]
Cheng, Lihua [1 ]
Zhang, Libo [1 ,3 ]
机构：
[1] Guangdong Univ Petrochem Technol, Sch Chem Engn, Guangdong Prov Engn & Technol Ctr Corros & Safety, Maoming 525000, Peoples R China
[2] ZhongKe Guangdong Refinery Petrochem Co Ltd, Zhanjiang 524031, Peoples R China
[3] China Univ Petr Beijing Karamay, Coll Engn, State Key Lab Heavy Oil Proc, Karamay 834000, Peoples R China
来源：
ENERGIES | 2025年 / 18卷 / 05期
基金：
中国国家自然科学基金;
关键词：
cotton stalk; hydrothermal liquefaction; binary blending; multivariate blending; interaction; bio-oil; CELLULOSE-LIGNIN INTERACTIONS; FAST PYROLYSIS; BIO-OIL; DIFFERENT TEMPERATURES; HEMICELLULOSE; LIQUEFACTION; BIOMASS; GASIFICATION; YIELD;
D O I：
10.3390/en18051290
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Converting agricultural and forestry waste into high-value-added bio-oil via hydrothermal liquefaction (HTL) reduces incineration pollution and alleviates fuel oil shortages. Current research focuses on adjusting HTL parameters like temperature, time, catalyst, and pretreatment. Few studies explore raw material composition and its interactions with bio-oil properties, limiting guidance for future multi-material hydrothermal co-liquefaction. In view of the above problems, the lignocellulosic model in this paper used cellulose, hemicellulose, lignin, and protein as raw materials. At a low hydrothermal temperature (220 degrees C), the yield and properties of hydrothermal bio-oil were used as indicators to explore the influence of the proportional content of different model components on the interaction in the hydrothermal process through its simple binary blending and multivariate blending. Then, compared with the hydrothermal liquefaction process of cotton stalk, the interaction between components in the hydrothermal process of real lignocellulose was explored. The results demonstrated significant interactions among cellulose, lignin, and hemicellulose in cotton stalks. The relative strength of component interactions was ranked by yield (wt.%) and property modulation as follows: cellulose-lignin (C-L, 6.82%, synergistic enhancement) > cellulose-hemicellulose (C-X, 1.83%, inhibitory effect) > hemicellulose-lignin (X-L, 1.32%, non-significant interaction). Glycine supplementation enhanced bio-oil yields, with the most pronounced effect observed in cellulose-glycine (C-G) systems, where hydrothermal bio-oil yield increased from 2.29% to 4.59%. Aqueous-phase bio-oil exhibited superior high heating values (HHVs), particularly in hemicellulose-glycine (X-G) blends, which achieved the maximum HHV of 29.364 MJ/kg among all groups. Meanwhile, the characterization results of hydrothermal bio-oil under different mixing conditions showed that the proportion of model components largely determined the composition and properties of hydrothermal bio-oil, which can be used as a regulation method for the synthesis of directional chemicals. Cellulose-lignin (C-L) interactions demonstrated the strongest synergistic enhancement, reaching maximum efficacy at a 3:1 mass ratio. This study will deepen the understanding of the composition of lignocellulose raw materials in the hydrothermal process, promote the establishment of a hydrothermal product model of lignocellulose, and improve the yield of bio-oil.
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页数：17
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