摘要
在已有的真空膜蒸馏实验平台基础上增加鼓气装置,研究了原料液温度、流量以及鼓气强度和鼓气方式对膜通量的影响规律.结果表明,通过鼓气作用可以使膜通量得到较大程度上的提高;原料液温度、流量和鼓气强度共同决定鼓气膜蒸馏传质过程.膜通量随原料液流量和温度的增加而增加;当原料液流量和温度相同时,膜通量随鼓气流量的增加呈现先增大后减小的趋势,且温度越高这种趋势越明显;间歇鼓气较连续鼓气过程强化效果更为明显,在鼓气时间相同时,鼓气间隔时间越长,膜通量越大;在鼓气间隔时间相同时,随着鼓气时间的增加,膜通量呈现先增加后减小的趋势.
An aeration system was added to the existing vacuum membrane distillation experimental platform,so as to investigate the influence of feed temperature,flow rate,air bubbling rate and aeration mode on membrane flux.The results showed that membrane flux could be improved by aeration and mass transfer performance of the aeration membrane distillation process was determined by feed temperature,flow rate and air bubbling intensity of the feed.Membrane flux increased with the increase of feed flow rate and feed temperature.When flow rate and temperature of the feed kept fixed,membrane flux first increased and then decreased with the increase of aeration rate,and this tendency was more obvious as feed temperature went up.The influence of batch bubbling was more effective than that of continuous bubbling.When air bubbling time kept fixed,membrane flux was going up as air bubbling interval increased.When air bubbling interval time kept fixed,membrane flux first increased and then decreased with the increase of bubbling time.
作者
胡俊虎
吴顺利
杨晓宏
田瑞
刘常友
闫文志
HU Junhu;WU Shunli;YANG Xiaohong;TIAN Rui;LIU Changyou;YAN Wenzhi(Institute of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Wind Energy Utilization,Ministry of Education,Hohhot 010051,China;Key Laboratory of Renewable energy,Hohhot 010051,China;Shandong Zhaojin Motian Co.Ltd.,Zhaoyuan 265400,China))
出处
《膜科学与技术》
CAS
CSCD
北大核心
2019年第5期105-111,共7页
Membrane Science and Technology
基金
国家自然科学基金资助项目(51866011)
内蒙古自然科学基金项目(2017MS(LH)0505)
关键词
鼓气
膜蒸馏
强化
bubbling
membrane distillation
enhancement
