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颜学升,郁有阳,左子文,等. 膜蒸馏组件结构优化计算流体力学模拟及实验研究[J]. 科学技术与工程, 2020, 20(27): 11204-11211.
yanxuesheng,郁有阳,et al.CFD Simulation and Experimental Study on Membrane Distillation Module Structure Optimization[J].Science Technology and Engineering,2020,20(27):11204-11211.
膜蒸馏组件结构优化计算流体力学模拟及实验研究
CFD Simulation and Experimental Study on Membrane Distillation Module Structure Optimization
投稿时间:2019-08-10  修订日期:2020-06-25
DOI:
中文关键词:  膜蒸馏 计算流体力学??? 温度极化 浓度极化??? 脱盐 设计
英文关键词:membrane distillation??? CFD TPC??? CPC desalination??? design
基金项目:国家自然科学基金青年项目( 51806087);镇江市重点研发计划—社会发展(SH2017061)
              
作者单位
颜学升 Jiangsu University
郁有阳 江苏大学能源与动力工程学院
左子文 江苏大学能源研究院
田程友 江苏大学能源与动力工程学院
颜  亮 江苏远东环保工程有限公司
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中文摘要:
      为提高膜蒸馏过程中的渗透通量,对膜组件料液侧流道进行优化,利用计算流体力学(CFD)软件,对3种膜组件(Model A、Model B、Model C)进行三维模拟计算,对比分析各膜组件的内部流动状态、温度极化系数(TPC)、浓度极化系数(CPC);同时,考察流道优化后膜通量和热效率的变化情况。模拟结果表明:Model A内存在主流区和回流区,Model B内分区现象消失,Model C内流动最为复杂;Model A温度极化最严重,Model B浓度极化最严重,Model C各极化现象最弱;此外,Model C在膜通量方面比Model A提升至少90%,对于热效率,Model C最高,Model A与Model B在不同工况下存在差异。最后,选取Model C进行实验,发现实验值与模拟值吻合良好,验证模型的准确性。研究表明流道优化能极大改善膜蒸馏的通量问题,为进一步优化内部结构提供依据。
英文摘要:
      In order to improve the permeate flux in the membrane distillation process, The feed side runner of the membrane module was improved. CFD software was used to calculate three-dimension numerical simulation in 3 different membrane modules(Model A, Model B, Model C). The internal flow state, temperature polarization coefficient (TPC), concentration polarization coefficient (CPC), membrane flux and thermal efficiency of each membrane module were compared and analyzed. The simulation results show that the membrane module is divided into mainstream zone and reflux zone in Model A. The zoning phenomenon disappears in Model B. In Model C, the flow is the most complicated. The results show that the temperature polarization of Model A is the most serious, and the concentration polarization of Model B is the most serious. Polarization existing in Model C was effectively relieved due to diversion plates. The membrane flux of Model C is at least 90% higher than that of Model A. For thermal efficiency, Model C is the highest, Model A and Model B varies with different operating conditions. The model C membrane module was built for membrane distillation experiment. The simulation results were verified with the experimental data and the accuracy of the model was verified. The research indicate thatflow channel optimization can greatly improve the flux of membrane distillation and provide a basis for further optimization of internal structure.
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