Engineering Research Centre of Oil Shale Comprehensive Utilization, Ministry of Education, Northeast Electric Power University, Jilin City, Jilin 132012, PR China; School of Energy and Power Engineering, Northeast Electric Power University, Jilin City, Jilin 132012, PR China.
Engineering Research Centre of Oil Shale Comprehensive Utilization, Ministry of Education, Northeast Electric Power University, Jilin City, Jilin 132012, PR China; School of Energy and Power Engineering, Northeast Electric Power University, Jilin City, Jilin 132012, PR China.
Bioresour Technol. 2021 Jul;332:125120. doi: 10.1016/j.biortech.2021.125120. Epub 2021 Apr 6.
The non-structural components (extractives and ash) in biomass can affect the torrefaction characteristics. The objective of this study was to investigate the applicability of air oxidative and non-oxidative torrefaction for corn stalk, which has higher organic extractives and lower ash contents. The raw materials were torrefied with air and nitrogen in a fluidized bed reactor at 180℃235℃ and 200℃280℃ for 1 h, respectively. The proximate and ultimate analysis results demonstrated that the lower ash content (3.89%) was not favorable for deoxygenation. The organic extractives, extracted materials and mixture were torrefied with nitrogen at 260℃. The results indicated that the addition of organic extractives reduced the deoxidation efficiency of structural components during torrefaction. Compared to raw materials, the moderate and severe removal of hemicellulose can be achieved through torrefaction under air and nitrogen, respectively.
生物质的非结构性成分（抽提物和灰分）会影响热解特性。本研究的目的是研究空气氧化和非氧化热解在玉米秸秆中的适用性，玉米秸秆的有机抽提物含量较高，灰分含量较低。原料在流化床反应器中分别于 180℃235℃和 200℃280℃下用空气和氮气在 1 小时内进行热解。 元素分析和最终分析结果表明，较低的灰分含量（3.89%）不利于脱氧。在 260℃下用氮气对有机抽提物、提取材料和混合物进行热解。结果表明，在热解过程中，有机抽提物的添加降低了结构成分的脱氧效率。与原料相比，在空气和氮气下热解可以适度和严重地去除半纤维素。
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