期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 167, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jaap.2022.105657
关键词
Waste lignin; Atmosphere design; Oxidative torrefaction; Physicochemical properties; Thermochemical conversion; Pyrolysis products
资金
- Talent Initiation Project of Zhejiang Agriculture and Forestry University [2022FR007]
- National Natural Science Foundation of China [31971740]
- Jiangxi Forestry Bureau Forestry Science and Technology Innovation Special Project [202134]
- Nanping Science and Technology Plan Project [N2020Z001]
- Zhejiang Provincial Key R & D Program Project [2019C02037]
- Longquan Bamboo and Wood Industry Upgrading Project [H20180300]
- Bamboo and Wood Industry Innovation Services [2022FR007]
- [L20170217]
- [H20190219]
Waste lignin can be a valuable resource for energy and chemical production, but its thermochemical conversion is hindered by low overall yield and low production of final products. This study investigated the effects of oxidative torrefaction on lignin, and found that it increased the energy content of lignin and facilitated the conversion of lignin into energy and high-value chemicals.
Waste lignin is a promising feedstock for the generation of energy and chemicals. Nevertheless, the thermo-chemical conversion of waste lignin is limited by several obstacles, such as the low yield of the overall process and low production of final products. In this study, lignin was subjected to oxidative torrefaction, and the chemical structures and pyrolysis products of torrefied lignin were investigated. Oxidative torrefaction increased the calorific value of lignin by removing some functional groups and generating more solid products. Low temperature (230 ?) and oxygen concentration (8-10%) were conducive to the production of phenolic (up to 82.16%) and hydrocarbon substances from lignin, and oxidative torrefaction also facilitated the conversion of waste lignin into unconsolidated products after pyrolysis. This finding indicates that oxidative torrefaction is a mild and economically feasible process for the pretreatment of biomass, which favors the thermochemical conversion of lignin into energy and high-value chemicals.
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