CFD模拟分析水力空化管结构对反应强化影响  

Eff ect of Cavitators with Diff erent Structural Characteristics on Reaction Intensifi cation by CFD Simulation Analysis

作　　者：刘景梅[1] 郭翌阳 刘浪[1] 冶育芳 马凤云[1] Liu Jingmei;Guo Yiyang;Liu Lang;Ye Yufang;Ma Fengyun(State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,College of Chemistry,Xinjiang University,Xinjiang,830017;College of Chemistry and Chemical Engineering,Xinjiang Normal University,Xinjiang,830054)

机构地区：[1]新疆大学化学学院省部共建碳基能源资源化学与利用国家重点实验室,新疆830017 [2]新疆师范大学化学化工学院,新疆830054

出　　处：《当代化工研究》2024年第22期55-58,共4页Modern Chemical Research

基　　金：中央引导地方专项项目“苯-甲醇烷基化反应空化场强化低温制备二甲苯技术开发”;新疆维吾尔自治区重大专项“煤焦油可控加氢生产国Ⅵ柴油技术开发与示范”(项目编号:2021A01002-1)。

摘　　要：水力空化技术被广泛应用于有机合成及污水处理等领域。为优化空化效果,提出一种孔板-文丘里复合空化管,并与文丘里空化管对比。借助ANSYS-FLUEBT获得两空化管不同入口压力、温度下空化场的流速、压力、汽化率和湍动能分布,从结构角度分析了压力和温度的影响。进一步从汽化强度和空泡溃灭强度对比了两结构空化管对反应的强化效果,并选择水解离反应验证模拟结果。结果表明:复合型汽化强度低于文丘里型,但其空泡溃灭强度更高。其·OH释放量是文丘里型的2倍,对反应的强化效果更优。Hydraulic cavitation technology is widely used in organic synthesis and sewage treatment.To optimize the cavitation effect,a new combined structure cavitator was proposed and compared with the Venturi cavitator.The velocity,pressure,vaporization rate and turbulent kinetic energy under different inlet pressure and temperature were obtained.The average vaporization rateand average turbulent kinetic energy were calculated,the influence of inlet pressure and temperature was analyzed.The cavitation effect was compared from two aspects including the intensity of bubble generation and collapse.The simulation results was verified by water dissociation reaction.The results showed that the combined type bubble generation was low strength,but the its collapse was higher,its hydroxyl radical yield was 2 times that of the Venturi type,and its strengthening effect was more significant.

关 键 词：水力空化 计算流体力学 实验验证 羟基自由基 过程强化 

分 类 号：TV131[水利工程—水力学及河流动力学]