膜科学与技术

料液强化流动对气扫式膜蒸馏影响的实验研究

作者：张大帅，李晨，张小朋，吴迪，熊玉琴，林强，史载锋

单位：海南省水环境污染治理与资源化重点实验室，海南师范大学化学与化工学院，海口 571158

关键词：脉冲流；鼓气流；气扫式膜蒸馏；通量强化比；热效率

出版年,卷(期):页码： 2018,38(3):91-96

摘要：

采用聚偏氟乙烯(PVDF)中空纤维膜组件，对比研究稳定流气扫式膜蒸馏(SSGMD)、脉冲流气扫式膜蒸馏(PSGMD)、鼓气流气扫式膜蒸馏(GSGMD)、鼓气流和脉冲流结合式(P&G SGMD)四种膜蒸馏模式，以膜的渗透性能、膜污染的状况、热效率为指标，判断4种模式的的优越性。研究了SSGMD膜蒸馏过程中进料温度(Tf-in)和进料流量(Qf)对膜通量(J)的影响，选择了最佳的条件，对比4种膜蒸馏方法在膜蒸馏过程中膜的渗透性能、膜表面污染情况、热效率。结果表明，采用SSGMD工艺，J随Qf、Tf-in的增大而增大；在4种膜蒸馏的过程中，GSGMD过程中膜通量相对最大、热效率最高（其值为49.21%）、膜的污染最小。

?PVDF membrane module is used to investigate the effect of steady flow(SSGMD), pulse flow(PSGMD), gas-liquid two-phase flow(GSGMD) and pulse flow & gas-liquid two-phase flow (P&G SGMD) on the performance of sweeping gas membrane distillation (SGMD) process with seawater as the feed. The SGMD process was applied to membrane distillation, the effect of feed temperature (Tf-in) and feed flow (Qf) operation parameters on the membrane flux(J). The impact of different optimization methods on permeate flux, membrane fouling, thermal efficiency were studied individually. The results show that the membrane flux(J) increases with the increase of feed temperature (Tf-in) and feed flow (Qf) on the SSGMD. Results of strengthening contrast experiments indicated that the optimal flux enhancement effect could be the GSGMD, its thermal efficiency was 49.21%, membrane has the least fouling

张大帅(1985- )，男，吉林省长春市人，博士生，研究方向为膜蒸馏海水淡化与污水处理，E-mail：zdw198562@163.com. *通讯作者，E-mail: zaifengshi@163.com.

参考文献：

[1]Lawson K W, Lloyd D R. Membran distillaiton[J]. J Membr Sci., 1997, 124(1): 1~25.
[2]Lawson K W, Lloyd D R. Membrane distillation. I. Module design and performance evaluation using vacuum membrane distillation[J]. , J Membr SciJ. Membr. Sci., . 1996, 120, 111~–121.
[3] A.M. Alklaibi A M, , N. Lior N, . Membrane-distillation desalination: status and potential[J]., Desalination, 2005, 171: 111~–131.
[4]S.KubotaS, et al., Experiments on seawater desalination by membrane distillation[J]., Desalination, 1988, 69: 19~–26.
[5]F. Banat F, R. Jumah R, , M. Garaibeh M. Exploitation of solar energy collected by solar stills for desalination by membrane distillation, Renew. Energy., 2002, 25: 293~–305.
[6]M.M. Teoh ,M M , S. Bonyadi S, , T.-S. Chung T S, . Investigation of different hollow fiber module designs for flux enhancement in the membrane distillation process[J]. J Membr Sci, J. Membr. Sci., ., 2008, 311: 371~–379.
[7]Chen G uiziZ Chen, , Yang Xing Yang, , Wang Rong Wang, . Performance enhancement and scaling control with gas bubbling in direct contact membrane distillation[J]., Desalination, 2013, 308: 47~–55.
[8]. Yang, X.,, R. Wang R, and A.G. , Fane A G, . Novel designs for improving the performance of hollow fiber membrane distillation modules[J]. . J Membr Sci.,Journal of Membrane Science, 2011. 384(1/2): 52-62.
[9]熊玉琴, 张梅梅, 王仕超,周凡, 史载锋, 林强. 脉冲流强化膜蒸馏高浓度盐水的研究[J]. 膜科学与技术, 2016, 36(3): 98~-102.
[10]熊玉琴, 周凡, 高飞, 史载锋, 林强. 气泡大小及相对湿度对鼓泡强化膜蒸馏的影响[J]. 膜科学与技术, 2016, 36(2): 65~-69+75.
[11]熊玉琴. 膜蒸馏法进行海水淡化和铅离子浓缩[C] // 2014年中国环境科学学会论文集, 中国环境科学学会. 3899.
[12] Cheng L. H.,, Wu P. C.,, Chen J. H. Numerical simulation and optimal design of AGMD- based fiber modules for desalination[J]. Industrial & Engineering Chemistry Research., 2009, 48 (10): 4948~-4951.
[13] Semiat R. Energy issues in desalination processes[J]. Environmental Science & Technology., 2008, 42 (22): 8193~-8201.
[14] Bourawi E., Ding Z. A framework for better understanding membrane distillation separation process[J]. Journal of Membrane Distillation, 2006, 285 (1/2): 4~-29.
[15] 熊玉琴. 中空纤维膜蒸馏高浓度盐水过程强化及在海水淡化中的应用[D]. 海南师范大学, 2016.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com