大型气升环流反应器加置内件时氧传递规律的研究

CIESC Journal

大型气升环流反应器加置内件时氧传递规律的研究

吴捷,胡维兵,冯朴荪

大连理工大学化学工程研究所,大连理工大学化学工程研究所,大连理工大学化学工程研究所大连116012 ,大连116012 ,大连116012

出版日期:1992-02-25 发布日期:1992-02-25

Oxygen Transfer in a Large-Scale Airlift Loop Reactor with Inner Devices

Wu Jie, Hu Weibin and Feng Pusun (Department of Chemical Engineering, Dalian University of Technology, Dalian 116012)

Online:1992-02-25 Published:1992-02-25

摘要/Abstract

摘要： 研究了用结构简单而实用性强的筛板及折皱丝网组件作为内件,来促进大型气升环流反应器中气泡的分散,改善气液两相的混合,从而强化氧传递过程.文中分析了筛板开孔直径与开孔率对氧传递系数的影响,比较了两种内件效果,讨论了最佳结构尺寸.针对高径比大的气升环流系统提出了测定K_La值的平推流动态模型.模型计算结果与实测数据吻合较好.

Abstract: Puttng some suitable internal devices in the risercomer of a large-scale airlift loop reactor for promoting bubbles dispersion and gas-liquid mixing could enhance the oxygen transfer. The perforated plate and corrugated screen package were mainly investigated. The influence of the hole diameter and void-age of the perforated plate on KLa was studied. The results showed that smaller hole diameter and larger voidage had higher KLa values with lower hydraulic resistance. In order to measure the KLa with the dynamic method, a plug flow model for describing the transient response of dissolved oxygen concentration in the loop system with large height and diameter ratio was proposed to yield an analytic solution. The calculated results based on the model were well in accordance with the experimental data.

吴捷,胡维兵,冯朴荪. 大型气升环流反应器加置内件时氧传递规律的研究 [J]. CIESC Journal.

Wu Jie, Hu Weibin and Feng Pusun (Department of Chemical Engineering, Dalian University of Technology, Dalian 116012). Oxygen Transfer in a Large-Scale Airlift Loop Reactor with Inner Devices[J]. .