直叶片离心喷雾气液反应器分离性能

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张婉婷, 许晓波, 邓列征, 陈文武, 金玉奇, 胡大鹏.直叶片离心喷雾气液反应器分离性能[J].,2020,60(4):358-364

直叶片离心喷雾气液反应器分离性能

Searation erformance of straight blade centrifugal atomized gas-liquid reactor

DOI：10.7511/dllgxb202004004

中文关键词:单重态氧发生器离心喷雾气液反应器分离性能数值模拟实验研究

英文关键词:singlet oxygen generator (SOG)centrifugal atomized gas-liquid reactor separation performance numerical simulation experimental study

基金项目:国家自然科学基金资助项目(21473194,21573231).

作者	单位
张婉婷, 许晓波, 邓列征, 陈文武, 金玉奇, 胡大鹏

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中文摘要:

为了解决目前单重态氧发生器存在的气体处理量小、气液反应面积小和气液分离不彻底的问题,设计了一种雾化技术与离心技术相结合的两级排液式直叶片离心喷雾气液反应器.首先采用CFD方法,对该反应器建立了计算模型,研究了反应器中连续相流场、离散相颗粒的运动特性,系统分析了粒径及转速对反应器分离性能的影响,获得了分离特性曲线.然后通过实验研究,分析了反应器在真实工况下的分离性能.综合研究表明,CFD 模拟结果与实验结果比较吻合,CFD模型可用于该实验研究.反应器在5 mol/s的气体流量下对于粒径大于90 μm 的液滴在3000 r/min转速下分离效率100%,为单重态氧发生器的发展提供了参考.

英文摘要:

In order to solve the problems of small gas handling capacity, small gas-liquid reaction area and low separation efficiency in singlet oxygen generator, a two-stage liquid-discharge straight blade centrifugal atomized gas-liquid reactor combined with atomization technology and centrifugal technology is designed. Firstly, the calculation model of the reactor is established by CFD method, and the motion characteristics of the continuous phase flow field and discrete phase particles in the reactor are studied. The influence of particle size and speed on the separation performance of the reactor is systematically analyzed, and the separation characteristic curve is obtained. Secondly, through the experimental research, the separation performance of the reactor under real working conditions is analyzed. Comprehensive research shows that CFD simulation results are in good agreement with experimental results, CFD model can be used in this experimental study. The efficiency of the reactor at 5 mol/s gas flow rate is 100% for droplets with particle size greater than 90 μm at 3 000 r/min speed, which provides reference for the development of singlet oxygen generator.

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