膜科学与技术

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Solar collector vacuum membrane evaporation system and its application to salt concentration

Authors：

SHI Jianhang1, AbuziedMostafaAbd El-Rady2, CHEN Xiaojie2, CHEN Shuichao2, ZHANG Lin2, HE Gaohong1,

CHEN Huanlin2

Units： 1.State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology, Dalian University of Technology, Dalian 116024, Liaoning, China;2 Engineering research center of membrane and water treatment technologyof the Ministry of Education,Zhejiang University, Hangzhou 310027,Zhejiang,China

KeyWords： solar energy; vacuum membrane evaporation; enrichment; brine

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(4):56-60

Abstract：

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.

Funds：

浙江省海水淡化重点创新团队自主设计项目（2011R09045-05）

AuthorIntro：

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

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