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化工进展  2015 

三相逆流化床的研究进展与展望

DOI: 10.16085/j.issn.1000-6613.2015.02.002

Keywords: 三相,逆流化床,流体力学,数值模拟,废水

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Abstract:

三相逆流化床(TPIFB)作为一种新型的流化床反应器,具有诸多优点及巨大的应用前景。本文首先介绍了TPIFB的结构、原理和特点,综述了TPIFB基础研究和应用研究。基础研究的阐述主要包括流型、压力降、最小流化速度、相含率、停留时间分布、气泡行为、传质和传热等流体力学特性的重要性;操作条件和流体物性对这些流体力学特性的影响规律;一些重要流体力学特性参数的数学模型及数值模拟研究等。TPIFB应用研究主要介绍了其在装置优化、含油废水处理及其他工业废水处理等方面的研究进展和主要成果。最后指出TPIFB瞬态和微观研究较少、实验研究方法单一、实验结论缺少定量关系、实验模型和方法存在局限性、应用性研究少而分散等是目前阻碍TPIFB工业化应用的主要问题,并展望了其今后的主要研究方向,包括反应器装置设计和开发、数值模拟结合实验考察TPIFB瞬态和微观特征、过程优化机理模型与反应器模型的建立、反应器放大及应用性研究。

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