文献类型：期刊文献

英文题名：Comprehensive study on morphology, composition, and structure evolutions of different biomass particles with torrefaction and low-temperature carbonization

作者：Shen, Zhongjie[1,2];Dong, Zizheng[1,2];Zhang, Haigang[1,2];Guo, Xiaolei[1,2];Liu, Haifeng[1,2]

机构：[1]East China Univ Sci & Technol, Natl Energy Coal Gasificat Technol Res & Dev Ctr, POB 272, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China

年份：2025

卷号：193

外文期刊名：BIOMASS & BIOENERGY

收录：;EI(收录号：20250117635375);WOS:【SCI-EXPANDED(收录号:WOS:001400162400001)】；

基金：This study is supported by the National Natural Science Foundation of China (22378130) , Key R & D Program of Xinjiang Uygur Autonomous Region (2022B03026-1) and the Fundamental Research Funds of the Central Universities (JKB01241715) .

语种：英文

外文关键词：Biomass particle; Torrefaction; Carbonization; Shrinkage; Structure evolution

摘要：Biomass torrefaction and carbonization pretreatments are common and essential to the subsequent utilization in the industry, such as gasification and combustion. The current work conducted a comprehensive investigation on the morphology, composition, and structure evolutions of five biomass particles during the torrefaction and low- temperature carbonization processes, with in situ experimental methods and multiple analytical technique. The color and morphological changes of biomass particles during the heating process were obtained by in-situ experiments. The results showed that a micron biomass particle performed a high shrinkage ratio, ranging from 20 to 45 vol% during the torrefaction and low-temperature carbonization processes, which the ratio was found to be lower than 5 % in the heating stage. With the increase of the pretreatment temperature, the surface fragments of particles increased and the structural damage was intensified. The mass loss, heating value, and energy yield was also compared with each biomass and related to the pretreatment temperatures. The changes of the hemicellulose, cellulose, and lignin contents with effects of temperature and biomass type displayed similar reducing tendency, with the analysis of functional group variation. In addition, an exponential relationship between the shrinkage ratio of the biomass particle and the total mass content change of extractives, hemicellulose, and lignin was found. Finally, the comprehensive mechanism diagram of the morphology, composition, and structure evolutions of different biomass particles were proposed.