化工进展 ›› 2016, Vol. 35 ›› Issue (05): 1263-1272.DOI: 10.16085/j.issn.1000-6613.2016.05.001

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流化床-化学气相沉积技术的应用及研究进展

刘荣正, 刘马林, 邵友林, 刘兵   

  1. 清华大学核能与新能源技术研究院, 先进核能技术协同创新中心, 北京 100084
  • 收稿日期:2015-08-24 修回日期:2015-10-03 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: 刘马林,副研究员。E-mail liumalin@tsinghua.edu.cn。
  • 作者简介:刘荣正(1985-),男,助理研究员。
  • 基金资助:
    国家自然科学基金(21306097,51302148)及高等学校博士点专项科研基金(20121010010)项目。

Application and research progress of fluidized bed-chemical vapor deposition technology

LIU Rongzheng, LIU Malin, SHAO Youlin, LIU Bing   

  1. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China
  • Received:2015-08-24 Revised:2015-10-03 Online:2016-05-05 Published:2016-05-05

摘要: 流化床-化学气相沉积(FB-CVD)技术是一种多学科交叉的材料制备技术,兼有流化床传热传质性能良好以及化学气相沉积均匀、产物单一等优点,在工业生产中有着广泛的应用,但因其属于交叉学科,散见于各种研究,没有进行专门的进展评述。本文拟对FB-CVD的工业应用进行专题综述,分析其发展和研究趋势。首先探讨了FB-CVD的基本原理,分别综述了其在颗粒包覆、一维纳米材料、多晶硅制备、颗粒表面改性及粉体制备等方面的应用,介绍了FB-CVD的过程模拟及反应器结构优化方面的研究进展。通过以上讨论,梳理了FB-CVD研究的科学内涵。可以看出,该过程具有明显的多尺度特征,即材料制备的微观层次、颗粒流化均匀性的介观层次以及反应器结构设计的宏观尺度。总结得出:FB-CVD技术的未来发展取决于3个尺度的耦合分析,其研究重点也应关注尺度间的相互影响效应,如材料制备的均相成核、非均相成核和颗粒流化及运动规律的相互耦合等。

关键词: 流化床-化学气相沉积, 材料制备, 过程分析, 多尺度耦合

Abstract: Fluidized bed-chemical vapor deposition (FB-CVD) is widely used in industrial production owing to the combined advantages of both fluidized bed and chemical vapor deposition. Providing good heat and mass transfer, it can obtain a pure product with uniform deposition. Based on its basic principle, the applications of FB-CVD in areas of particle coating, preparation of one-dimensional nano-materials, polycrystalline silicon, powder synthesis and powder surface modification are reviewed. The progress of process simulation and reactor structure design of FB-CVD is introduced. From the discussion, the scientific connotation of FB-CVD shows multi-scale features, namely material preparation at microscopic level, particle fluidization at mesoscopic level and reactor structure design at macroscopic level. Future development of FB-CVD technology depends on coupling analysis of these three scales, and research should be focused on the effect of interaction between different scales, such as coupling between homogeneous nucleation material/non-homogeneous nucleation in materials preparation and particle fluidization in the reactor.

Key words: fluidized bed chemical vapor deposition, material preparation, process research, multi-scale coupling

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