Real-time Measurement of Internal Structural Changes of Woody Biomass Pyrolyzed under High Heat Flux using Ultra-high-speed X-ray CT
Real-time Measurement of Internal Structural Changes of Woody Biomass Pyrolyzed under High Heat Flux using Ultra-high-speed X-ray CT
复制标题
利用超高速 X 射线 CT 实时测量高热通量下热解木本生物质的内部结构变化
DOI：
10.11395/jjsem.22.265
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
鶴田 俊
中科院分区：
文献类型：
--
作者：
大徳 忠史;鶴田 俊
在这项研究中，木质生物质的热解的微观可视化进行了使用BL 20 B2光束线在“SPring-8”，一个大型同步辐射设施。使用超高速计算机断层扫描（CT）可视化的形状和内部结构的木质生物量的变化。样品是高度为5 mm，直径为5 mm的日本柏木。我们使用辐射作为热源，以实现高的热通量。当热通量高时，样品膨胀。在样品中观察到间隙。与先前研究1）中获得的低热流下的实验结果相比，我们观察到了完全不同的方面。在氮气或空气气氛中，木材在瞬态热解过程中的内部结构可视化使用超高速X射线CT。此外，还利用纹影法研究了木质生物质的热解行为和热解气体的行为。
In this study, the microscopic visualization of the pyrolysis of woody biomass was conducted using the BL20B2 beamline at “SPring-8,” a large synchrotron radiation facility. Changes in the shape and internal structure of the woody biomass were visualized using ultra-high-speed computerized tomography (CT). The sample was a Japanese cypress wood with a height of 5 mm and diameter of 5 mm. We used radiation as the heat source to achieve a high heat flux. When the heat flux is high, the sample expands. Gaps were observed in the sample. Compared with the experimental results under the low heat flux obtained in the previous study 1), we observed a completely different aspect. In a nitrogen or air atmosphere, the internal structure of the wood during transient pyrolysis was visualized using ultra-high-speed X ray CT. In addition, the schlieren method was used to study the pyrolysis behavior of the woody biomass and the behavior of the pyrolysis gases.