一个高温和高压电池,用于通过中子成像对反应过程的现场可视化
Jun Abe1, Yoshihiro Matsumoto1, Tsukasa Miyazaki1
1Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan.
The Review of scientific instruments
|December 8, 2023
概括
一个新的高温和高压 (HTHP) 电池能够在水热反应的位置中子成像. 这项技术可在极端条件下可视化塑料分解和水相变化.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 中子影像成像技术
背景情况:
- 水热反应在各种工业过程中至关重要.
- 在极端条件下 (高温和高压) 在现场观察这些反应具有挑战性.
- 中子成像为密集材料的非破坏性分析提供了独特的功能.
研究的目的:
- 开发和验证高温和高压 (HTHP) 电池,用于现场中子成像.
- 为了研究在HTHP条件下亚临界和超临界水的行为.
- 在HTHP中研究聚烯和聚乙烯塑料的分解.
主要方法:
- 使用SUS316不钢容器设计和建造一个HTHP电池.
- 电池可在 500°C 和 50 MPa 的温度下工作.
- 获取中子传输图像以监测反应动态.
主要成果:
- 该HTHP细胞成功启用了水热反应的现场中子成像.
- 观察到水密度和相位的变化与温度和压力相关,影响中子传递.
- 塑料的融化在150-200°C之间开始,在500°C和20 MPa观察到分解.
结论:
- 开发的HTHP细胞是HTHP反应在位中子成像的宝贵工具.
- 这种技术可以提供对材料和流体在极端条件下的行为的见解.
- 这种HTHP细胞为未来生物质分解,重油改造和纳米材料合成的研究开辟了道路.
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