高校化学工程学报2018，Vol.32Issue(1)：38-43,6.DOI:10.3969/j.issn.1003-9015.2017.00.052
膜蒸馏海水淡化过程中的两相流强化实验研究
Experimental Investigation on Two-Phase Flow Enhancement of Desalination Processes via Membrane Distillation
摘要
Abstract
Gas-liquid two-phase flow was used in desalination processes with membrane distillation. Nitrogen or low-pressure water vapor was piped through tubular carbon membranes and their strengthening effects under different operation conditions were evaluated. The result shows that both nitrogen and low-pressure water vapor can increase permeate flux, and low-pressure water vapor has better strengthening effects. The permeate flux increases and then slightly decreases with the increase of nitrogen flux, while it continuously increases with the increase of water vapor flux. When the feed inlet temperature is low and the salt concentration is high, the flux improvement efficiency via two-phase flow is higher. The difference of flux improvement efficiency between nitrogen and low-pressure water vapor is less obvious when studied at higher feed inlet temperature. This study is useful in further investigation of membrane distillation enhancement processes.关键词
海水淡化/膜蒸馏/过程强化/两相流/炭膜Key words
desalination/membrane distillation/process enhancement/two-phase flow/carbon membrane分类
化学化工引用本文复制引用
张金赫,李花,沈驭臣,俞路,何德民,潘艳秋..膜蒸馏海水淡化过程中的两相流强化实验研究[J].高校化学工程学报,2018,32(1):38-43,6.基金项目
中央高校基本业务费(DUT17JC07) （DUT17JC07）
大连理工大学大学生创新创业训练计划(2016101410481). （2016101410481）
