Biomass torrefaction: A promising pretreatment technology for biomass utilization

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Chen, Zhiwen^1 ; Wang, Mingfeng^1 ; Ren, Yongzhi^1 ; Jiang, Enchen^1 ; Jiang, Yang^2 ; Li, Weizhen^2

College of Materials and Energy, South China Agricultural University, China^1

Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, China^2

关键词: Bio-mass energy;    Biomass utilization;    Emerging technologies;    Further utilization;    High-pressure water;    Higher heating value;    Pretreatment technology;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012201/pdf
DOI  :  10.1088/1755-1315/113/1/012201

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Torrefaction is an emerging technology also called mild pyrolysis, which has been explored for the pretreatment of biomass to make the biomass more favorable for further utilization. Dry torrefaction (DT) is a pretreatment of biomass in the absence of oxygen under atmospheric pressure and in a temperature range of 200-300 degrees C, while wet torrrefaction (WT) is a method in hydrothermal or hot and high pressure water at the tempertures within 180-260 degrees C. Torrrefied biomass is hydrophobic, with lower moisture contents, increased energy density and higher heating value, which are more comparable to the characteristics of coal. With the improvement in the properties, torrefied biomass mainly has three potential applications: combustion or co-firing, pelletization and gasification. Generally, the torrefaction technology can accelerate the development of biomass utilization technology and finally realize the maximum applications of biomass energy.