膜科学与技术

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Study of SO2absorption performance using PES hollow fiber membranes contactor

Authors： MA Yuhui1,2，YE Hui1,2，ZHANG Yuzhong1,2，LI Hong1,2，CHEN Ying3

Units： 1.School of Material Science and Engineering，Tianjin Polytechnic University，Tianjin 300387，China；2.State Key Laboratory of Separation Membranes and Membrane Processes，Tianjin Polytechnic University，Tianjin 300387，China；3.The Institute of Seawater Desalination and Multipurpose Utilization，SOA(Tianjin)，Tianjin 300192，China

KeyWords： PES; membrane contactor; membrane wetting; flue gas desulfurization

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(5):60-67

Abstract：

As one of the air pollutants，SO2 is the main cause of acid rain and PM2.5. Itnot only destroyed the ecosystem balance，but also affected the respiratory system and lung function. In this paper,PES hollow fiber membrane contactor was studied for the SO2 removal and absorption. The effects ofSO2 concentration,pressure differential, length of the membrane fiber, packing density and other factors on SO2 absorption performancewere investigated usingNaOH solution. And mass transfer performance of membrane contactor was also studied. The durable and stability of membrane contactor has been proved by long-term experiment. The effect of membrane wetting on membrane transfer mass was also been discussed. The results showed that when the stages of membrane contact, the length of membrane fiber, and absorption liquid flowrate increased, SO2 removal efficiency would increase. And SO2absorption fluxincreased as SO2 inlet concentration and liquid flow rate increased.The results of a long-term experiment indicated that SO2absorption flux dropped by 42% during the initial 10h because of membrane wetting.Then the absorption flux maintained at 2.8 × 10-4mol/m2s and unchanged after 390min.Based on the model of membrane wetting effect on total mass transfer resistance, membrane mass transfer resistance would be the main mass transfer resistance in the process of absorption, which accounted for 73% of the overall mass transfer resistance.

Funds：

国家自然科学基金资助项目（51503146）；2013海洋公益专项项目（201305004-5）；省部共建分离膜与膜过程国家重点实验室开放课题

AuthorIntro：

第一作者简介：马玉慧（1989-），女，湖北荆门人，硕士生，从事膜材料研究．E-mail：mayuhuihui@163.com ＊通讯作者，叶卉， E-mail：qianye325326@163.com；张玉忠， E-mail：zhangyz2004cn@163.com

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