热压颗粒制备的银合欢木热解行为。
Torrefaction behavior of hot-pressed pellets prepared from leucaena wood.
机构信息
The Joint Graduate School of Energy and Environment, Center of Excellence on Energy Technology and Environment, King Mongkut's University of Technology Thonburi, Bangmod, Tungkru, Bangkok 10140, Thailand.
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
出版信息
Bioresour Technol. 2021 Feb;321:124502. doi: 10.1016/j.biortech.2020.124502. Epub 2020 Dec 7.
In this study, torrefaction behavior of hot-pressed wood pellet prepared at 250 °C and compression pressure of 70 MPa was examined at temperature 260-300 °C. It was found that the torrefaction behavior of hot-pressed pellet (HP) was significantly different from that of Raw and cold-pressed pellet (CP). The mass yield and energy yield for torrefaction at 300 °C and 30 min holding time for HP were 54.5% and 84.4%, respectively. Whereas the mass yield and energy yield for torrefaction at 300 °C and 30 min for Raw were 41.5% and 58.1%, respectively. From the gas formation analysis, it was found that the dehydration and deoxygenation reactions were accelerated to produce a large amount of HO and CO during the torrefaction of HP. It was judged that torrefaction of hot-pressed pellet was very effective to prepare high quality black pellet.
在这项研究中，考察了在 250°C 的热压温度和 70 MPa 的压缩压力下制备的热压木屑颗粒在 260-300°C 下的热解行为。研究发现，热压颗粒（HP）的热解行为与原颗粒和冷压颗粒（CP）显著不同。在 300°C 和 30 分钟保温时间下，HP 的热解质量收率和能量收率分别为 54.5%和 84.4%。而在 300°C 和 30 分钟下，原颗粒的热解质量收率和能量收率分别为 41.5%和 58.1%。从气体生成分析可以看出，在 HP 的热解过程中，脱水和脱氧反应加速，产生了大量的 HO 和 CO。判断热压颗粒的热解对于制备高质量的黑颗粒非常有效。
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