膜科学与技术

太阳能集热真空膜蒸发系统及其盐溶液浓缩试验

作者：施建杭，abuziedmostafaabd el-rady²，陈小洁²，陈水超²，张林²，贺高红¹，陈欢林²

单位： 1.大连理工大学精细化工国家重点实验室膜科学与技术研究开发中心，大连，116024 ；2.浙江大学膜与水处理技术教育部工程研究中心，杭州，310027

关键词：太阳能；真空膜蒸发；浓缩；浓盐水

出版年,卷(期):页码： 2014,34(4):56-60

摘要：

采用太阳能集热真空膜蒸发系统对高浓盐水进行蒸发浓缩试验研究，考察了温度，真空度以及盐水溶液浓度对浓缩效果的影响。结果表明：温度、真空度的提高均能增大膜通量；实验中聚四氟乙烯（PTFE）膜组件的最高膜蒸发浓缩通量可达3.94kg/m2h；其中盐水浓度能从7wt%蒸发浓缩至32wt%，不产生明显的结晶。太阳能集热装置能维持料液温度在60-80℃范围内，供热稳定性良好，具有放大应用前景。

High concentration brine was enriched by solar collector vacuum membrane evaporation. Simultaneously，the effects of feed temperature, permeate side vacuum and feed concentration on membrane evaporation was investigated. It was found that membrane evaporation flux would increase with the increasing of temperature or vacuum. The maximum evaporation flux was 3.94kg/m2h in the enrichment of brine by PTFE capillary membrane module, and brine was concentrated from 7wt% to 32wt% without significant crystallization. Test run shows: feed temperature could be maintained at 60 -80 ℃ by the heat provided by the solar collector; this system possesses good heat stability; there are good prospects for large-scale applications.

施建杭（1991-），男，杭州市人，大连理工大学在读硕士研究生，主要从事膜分离技术应用研究。*通讯作者，电话：0571-87953802，E-mail：chenhl@zju.edu.cn

参考文献：

[1]王许云, 张林, 陈欢林. 膜蒸馏技术最新研究现状及进展[J]. 化工进展, 2007, 26(2): 168-172.
[2]Winter D, Koschikowski J, Wieghaus M. Desalination using membrane distillation: Experimental studies on full scale spiral wound modules[J]. Journal of Membrane Science, 2011, 375(1): 104-112.
[3]游文婷, 许振良, 徐文婷. 真空膜蒸馏法处理高浓度 Na2SO4和 CaCl2废水[J]. 膜科学与技术, 2013, 33(1):92-95.
[4]Mericq J P, Laborie S, Cabassud C. Evaluation of systems coupling vacuum membrane distillation and solar energy for seawater desalination[J]. Chemical Engineering Journal, 2011, 166(2): 596-606.
[5]于德贤, 于德良, 于万波, 等. 膜蒸馏海水淡化研究[J]. 膜科学与技术, 2002, 22(1): 17-20.
[6]Blanco Gálvez J, García-Rodríguez L, Martín-Mateos I. Seawater desalination by an innovative solar-powered membrane distillation system: the MEDESOL project[J]. Desalination, 2009, 246(1): 567-576.
[7]Wang X, Zhang L, Yang H, et al. Feasibility research of potable water production via solar-heated hollow fiber membrane distillation system[J]. Desalination, 2009, 247(1): 403-411.
[8]Koschikowski J, Wieghaus M, Rommel M. Solar thermal-driven desalination plants based on membrane distillation[J]. Desalination, 2003, 156(1): 295-304.
[9]Qtaishat M R, Banat F. Desalination by solar powered membrane distillation systems[J]. Desalination, 2013, 308: 186-197.
[10]Saffarini R B, Summers E K, Arafat H A, et al. Economic evaluation of stand-alone solar powered membrane distillation systems[J]. Desalination, 2012, 299: 55-62.
[11]Abdallah S B, Frikha N, Gabsi S. Design of an autonomous solar desalination plant using vacuum membrane distillation, the MEDINA project[J]. Chemical Engineering Research and Design, 2013.
[12]Raluy R G, Schwantes R, Subiela V J, et al. Operational experience of a solar membrane distillation demonstration plant in PozoIzquierdo-GranCanariaIsland (Spain)[J]. Desalination, 2012, 290: 1-13.
[13]Khayet M. Solar desalination by membrane distillation: Dispersion in energy consumption analysis and water production costs (a review)[J]. Desalination, 2012,308:89-101.
[14]Saffarini R B, Summers E K, Arafat H A, et al. Technical evaluation of stand-alone solar powered membrane distillation systems[J]. Desalination, 2012, 286: 332-341.
[15]杨华剑. 以太阳能为热源的真空膜蒸馏组件与系统研究[D]. 浙江大学, 2008.
[16]田瑞. 太阳能膜蒸馏淡化水系统研究进展[J]. 膜科学与技术, 2011, 31(3): 176-179.
[17]鲍倩倩, 杨焕强, 吴书成, 等. 杭州太阳总辐射特征统计及气候学经验计算[J]. 浙江气象, 2008, 29(2): 36-39.

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