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A kinetic study on simultaneously boosting the mass and fixed-carbon yield of charcoal production via atmospheric carbonization

机译:同时通过大气碳化促进木炭生产质量和固定碳产量的动力学研究

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The mass and fixed-carbon yield of charcoal produced from woody biomass via atmospheric carbonization can be simultaneously improved by harnessing the phenomenon of secondary char formation as a result of prolonged contact time between pyrolysis gas and solid (char). In this study, the carbonization of forest residues in comparison with their stem wood was studied by means of a thermogravimetric analyzer operated non-isothermally at atmospheric pressure with a heating rate of 10K/min and a final temperature of 800°C. Forest residue (tops and branches) and stem wood samples of Norway spruce, birch and oak trees collected from forests in Southern Norway were used as feedstock. The work focused on analyzing the effect of the process parameters (feedstock particle size, initial sample mass, and the residence time of volatiles released during the process) on the devolatilization kinetics of the carbonization process. The kinetic analysis was performed assuming the distributed activation energy model (DAEM) and three pseudo-components (hemicellulose, cellulose, and lignin).
机译:通过在热解气和固体(CHAR)之间的延长接触时间的结果,通过大气碳化由大气碳化产生的木质生物质产生的炭的质量和固定碳产率可以同时提高。在这项研究中,通过在大气压下的热量分析仪采用热量分析仪在大气压力下,加热速度为10k / min的加热速度和800℃的最终温度,研究了与它们的茎木的碳化与它们的茎木相比。挪威云杉的森林残留物(上衣)和茎木样本,挪威南部森林收集的桦木和橡树被用作原料。该工作的重点是分析过程参数(原料粒度,初始样品质量和过程中挥发物的停留时间)对碳化过程的脱挥石动力学的缺失动力学。假设分布式激活能量模型(DAEM)和三种伪组分(半纤维素,纤维素和木质素)进行动力学分析。

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