三相逆流化床的研究进展与展望

doi:10.16085/j.issn.1000-6613.2015.02.002

摘要/Abstract

摘要： 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。

关键词: 三相, 逆流化床, 流体力学, 数值模拟, 废水

Abstract: Three-phase inverse fluidized bed (TPIFB) is a novel reactor with significant advantages and great application prospects. This paper introduced structure,principle and advantages of TPIFB,and reviewed fundamental research and application research progress of TPIFB. The fundamental research includes the importance of hydrodynamic characteristic,such as fluid pattern,pressure drop,minimum fluidization velocity,phase holdup,residence time distribution,bubble behaviors,mass transfer and heat transfer,the effect law of operating conditions and fluid properties on those hydrodynamic characteristics,mathematic model and numerical simulation of some important hydrodynamic parameters. The application research includes research progresses and achievements on device optimizing,oily wastewater treatment and other industrial wastewater treatments. This paper also pointed out the obstacles faced by industrialized application,including fewer transient and microscopic researches,single study method,fewer quantitative relationships,limited models and methods,fewer and scattered application researches. The paper proposed future research directions of TPIFB,including design and development of reactor device,combination of numerical simulation and experiment to study transient and microscopic features of TPIFB,establishment of mechanism model and reactor model for process optimizing,scale-up and application research of reactor.

Key words: three-phase, inverse fluidized bed, fluid mechanics, numerical simulation, wastewater

中图分类号:

O359

万东玉, 王胜伟, 陈双喜, 王玉强. 三相逆流化床的研究进展与展望[J]. 化工进展, 2015, 34(02): 303-311,318.

WAN Dongyu, WANG Shengwei, CHEN Shuangxi, WANG Yuqiang. Research progress and prospective of three-phase inverse fluidized bed[J]. Chemical Industry and Engineering Progree, 2015, 34(02): 303-311,318.

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