建立了直接接触式膜蒸馏(DCMD)的传递模型,对膜蒸馏过程中膜通量和热效率等影响因素进行了详细研究.实验探索了膜蒸馏热侧进口温度、冷侧和热侧流量对过程的影响,为膜通量和热效率优化提供依据.结果表明,热侧进口温度升高、热侧和冷侧流量增加均有助于膜通量增加;热侧进口温度升高、热侧流量增加和冷侧流量减小均有利于提高热效率.膜通量取决于传质推动力,即蒸汽压差;热效率取决于平均膜面温度,凡是有利于膜面温度提高的操作条件都会增大热效率.
参考文献
| [1] | El-Bourawi MS;Ding Z;Ma R;Khayet M.A framework for better understanding membrane distillation separation process[J].Journal of Membrane Science,20061/2(1/2):4-29. |
| [2] | Li, Zhehao;Peng, Yuelian;Dong, Yajun;Fan, Hongwei;Chen, Ping;Qiu, Lin;Jiang, Qi.Effects of thermal efficiency in DCMD and the preparation of membranes with low thermal conductivity[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2014Oct.30(Oct.30):338-349. |
| [3] | Jianhua Zhang;Stephen Gray;Jun-De Li.Predicting the influence of operating conditions on DCMD flux and thermal efficiency for incompressible and compressible membrane systems[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2013:142-149. |
| [4] | Yehia M. Manawi;Majeda Khraisheh;Ahmad Kayvani Fard.Effect of operational parameters on distillate flux in direct contact membrane distillation (DCMD): Comparison between experimental and model predicted performance[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2014:110-120. |
| [5] | A. Ali;F. Macedomo;E. Drioli.Experimental and theoretical evaluation of temperature polarization phenomenon in direct contact membrane distillation[J].Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers,201310(10):1966-1977. |
| [6] | Khayet, M..Membranes and theoretical modeling of membrane distillation: A review[J].Advances in colloid and interface science,20111/2(1/2):56-88. |
| [7] | 刘茂林;余立新;蒋维钧.膜蒸馏热效率的研究[J].水处理技术,1992(04):225. |
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