Impact of torrefaction on biomass properties depending on temperature and operation time

被引：78

作者：

Simonic, M. ^{[1
]}

Goricanec, D. ^{[1
]}

Urbancl, D. ^{[1
]}

机构：

[1] Univ Maribor, Fac Chem & Chem Engn, Smetanova Ulica 17, Maribor 2000, Slovenia

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2020年 / 740卷

关键词：

Solid fuel; Torrefaction; Sewage sludge; Oak and mixed waste wood; SEWAGE-SLUDGE; WOODY BIOMASS; CARBONIZATION; GRINDABILITY; PERFORMANCE; PREDICTION; PYROLYSIS; BEHAVIOR; WASTES;

D O I：

10.1016/j.scitotenv.2020.140086

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Torrefaction is an effective way to upgrade biomass for producing fuels. The experimental results of torrefaction for three materials, oak wood, mixed wood mainly from deciduous trees and sewage sludge are presented. The comparison between three materials is performed to evaluate the influence of temperature and time on torrefaction operation. The influence of the operating temperature and time was analysed in order to determine optimal operation parameters for the newly developed process which has been patented. Properties, such as heating value, mass loss, chemical compositions, energy yield and enhancement factor were investigated. The results show that from an energy point of view the optimal operation time for oak and mixed wood is around 1.2 h at 260 degrees C. The torrefaction of sewage sludge is energetically unjustified. The highest carbon loss is shown for mixed wood, following by sewage sludge and oak wood. Torrefaction severity index was established based on the, most severe conditions. Torrefaction severity index could be applied as an indicator for prediction of torrefaction efficiency of chosen material. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：10

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