操作条件对真空膜蒸馏过程影响的实验及模拟研究  

Experiment and Numerical Simulation Study on Effect of Operating Condition in Vacuum Membrane Distillation Process

作　　者：黄静 蔡姝崴 高屹 王敏 徐国荣 HUANG Jing;CAI Shuwei;GAO Yi;WANG Min;XU Guorong(Department of Coast Defence and Engineering,Naval Logistics Academy of People's Liberation Army of China,300450;Basic Department,Naval Logistics Academy of People's Liberation Army of China,300450;The Institute of Seawater Desalination and Multipurpose Utilization,NMR,300192:Tianjin,China)

机构地区：[1]中国人民解放军海军勤务学院海防工程系,天津300450 [2]中国人民解放军海军勤务学院基础部,天津300450 [3]自然资源部天津海水淡化与综合利用研究所,天津300192

出　　处：《水处理技术》2023年第9期44-47,共4页Technology of Water Treatment

基　　金：国家部委资助重点科研计划项目(BHJ16C006)。

摘　　要：真空膜蒸馏(VMD)技术具有膜通量大、操作压力低、能耗低等优点,在海水淡化领域中占有重要的地位。本文分别研究了真空度、流速和进料液温度等外界条件对膜通量的影响。结果表明,随着真空度、流速和进料液温度的提高,膜通量逐渐增大。同时,利用计算流体力学(CFD)软件对真空膜蒸馏过程进行了模拟,并通过编写用户自定义函数(UDF)进行了数值仿真。结果表明,仿真数据与实验数据吻合较好。因此,UDF可以进一步用于中空纤维膜组件的放大模拟,以减少工程应用中复杂情况下的实验误差。Nowadays,vacuum membrane distillation(VMD)technology plays an important role in desalination owing to its high membrane flux,low operating pressure and low-grade energy sources.In this work,the influence of main operating condition including vacuum degree,feed circulation and feed temperature on the membrane flux were researched,respectively.The results showed the membrane flux increased gradually with the improvement of vacuum degree,feed circulation and feed temperature.Meanwhile,the computational fluid dynamics(CFD)software was used to simulate the vacuum membrane distillation process.And the numerical simulation was obtained by writing user defined function(UDF).The simulation data were well agree with the experimental data.The results indicated that the UDF can be used for amplification simulations of hollow fiber membrane module to reduce experimental errors in complex situations in engineering applications.

关 键 词：海水淡化 数值模拟 真空膜蒸馏 

分 类 号：TQ028.8[化学工程]