In this research, microscopic visualization of pyrolysis in woody biomass was conducted by using the BL20B2 beamline at “SPring-8,” a large synchrotron radiation facility. Changes in shape and internal structure of the woody biomass were visualized by ultra high-speed CT. The samples were made of Japanese cypress wood; they had a height and a diameter of 5 mm. We used radiation as the heat source to achieve a high heat flux. When the heat flux was high, the samples expanded. Gaps were observed inside the samples. By comparing our results with the experimental results obtained under a low heat flux in a previous study, we could observe an entirely different aspect. Considering that the increase in pressure due to the rapid generation of pyrolysis gas created gaps in the samples, the samples were drilled, and experiments were performed on them. The hole in the center of the wood alone did not create an escape route for the pyrolysis gas, and the pyrolysis behavior was the same as that observed in the unprocessed wood.

在这项研究中，通过使用大型同步加速器辐射装置“ SPring-8”上的BL20B2光束线，对木质生物质中的热解进行了微观可视化。木质生物质的形状和内部结构的变化通过超高速CT可视化。样品由日本柏木制成。它们的高度和直径为5毫米。我们使用辐射作为热源来实现高热通量。当热通量高时，样品膨胀。在样品内部观察到间隙。通过将我们的结果与先前研究中在低热通量下获得的实验结果进行比较，我们可以观察到一个完全不同的方面。考虑到由于热解气体的快速产生而导致的压力增加在样品中产生了间隙，因此对样品进行钻孔，并对其进行了实验。