2t/d多效真空膜蒸馏海水淡化中试实验研究  

2t/d pilot scale plant experiment on multi-effect vacuum membrane distillation for seawater desalination

作　　者：邢玉雷[1] 冯厚军[1] 齐春华[1] 张晓晨[1] 孙鹏浩[1] 李强[1] 肖亚苏[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《现代化工》2016年第11期167-171,共5页Modern Chemical Industry

基　　金：中央级公益性科研院所基本科研业务费专项资金(K-JBYWF-2013-T1;K-JBYWF-2016-T03);"十二五"国家科技支撑计划课题(2014BAB04B02)

摘　　要：研制了一台2 t/d多效膜蒸馏与多级闪蒸耦合的海水淡化中试装置,开展了中试性能测试和条件实验研究,分析了操作温度、效间温差、真空度、料液温度、流量、浓度等因素对系统性能的影响。实验结果表明,操作温度从60℃升高到80℃,效间温差从4.5℃增大到8.0℃,产水负荷分别增大12.7%和减少9.5%;料液温度从75℃升高至90℃,产水负荷指数增大55%,膜通量从3.95 kg/(m^2·h)增大至6.12 kg/(m^2·h);渗透侧真空度从70 k Pa增大至82 k Pa,产水负荷线性增大25%,造水比减小4.5%。此外,料液流速和料液浓度对产水性能的影响相对较弱。A 2. 0 t/d desalination pilot plant is developed, which is integrated with multi-effect membrane distillation （MEMD） and multi-stage flash （MSF） technologies. Performances tests and the effects of operating parameters on performance are analyzed. The results show that the water production and GOR are affected by operating temperature and temperature difference between effects. Water production is increased by 12. 7% as operating temperature is increased from 60℃ to 80℃. In contrast, the water production is reduced by 9. 5% as temperature difference is increased from 4. 5℃ to 8. O℃. Moreover, as feed temperature is increased from 75℃ to 90℃, water production is exponentially grown by 55% , and the membrane flux is increased from 3.95 kg/m2h to 6. 12 kg/m2h. Furthermore ,as vacuum degree is increased from 70 kPa to 82 kPa,water production is linearly increased by 25% ,while GOR is decreased by 4. 5%. In addition,feed flow and salinity have minor effects on performance.

关 键 词：海水淡化 多效膜蒸馏 多级闪蒸 工艺耦合 中试实验 

分 类 号：TQ028.8[化学工程] P747.1[天文地球—海洋科学]