SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (10): 2139-2147.DOI: 10.1016/j.cjche.2018.07.011

• Energy, Resources and Environmental Technology • Previous Articles     Next Articles

Feasibility analysis of SO2 absorption using a hydrophilic ceramic membrane contactor

Xingyin Gao, Minghui Qiu, Kaiyun Fu, Peng Xu, Xiangli Kong, Xianfu Chen, Yiqun Fan   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No.5 Xin Mofan Road, Nanjing 210009, China
  • Received:2018-05-24 Revised:2018-07-05 Online:2018-11-14 Published:2018-10-28
  • Contact: Yiqun Fan,E-mail address:yiqunfan@njtech.edu.cn
  • Supported by:

    Supported by the National Key R&D Plan (2016YFC0205700), the National Natural Science Foundation of China (91534108, 21506093, 21706114), the Natural Science Foundation of Jiangsu Province (BK20150947, BK20160979), and the National High Technology Research and Development Program of China (2012AA03A606), the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Feasibility analysis of SO2 absorption using a hydrophilic ceramic membrane contactor

Xingyin Gao, Minghui Qiu, Kaiyun Fu, Peng Xu, Xiangli Kong, Xianfu Chen, Yiqun Fan   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No.5 Xin Mofan Road, Nanjing 210009, China
  • 通讯作者: Yiqun Fan,E-mail address:yiqunfan@njtech.edu.cn
  • 基金资助:

    Supported by the National Key R&D Plan (2016YFC0205700), the National Natural Science Foundation of China (91534108, 21506093, 21706114), the Natural Science Foundation of Jiangsu Province (BK20150947, BK20160979), and the National High Technology Research and Development Program of China (2012AA03A606), the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Abstract: Hydrophilic ceramic membranes would be potential candidates for membrane gas absorption if they could be applied to appropriate separation processes. This study highlights a novel concept for the practical implementation of SO2 absorption in hydrophilic ceramic membrane that exhibits outstanding thermal and mechanical stabilities. With this aim, we investigated experimentally the performance of SO2 absorption into aqueous sodium hydroxide (NaOH) solution in a hydrophilic alumina (Al2O3) membrane contactor in terms of SO2 removal efficiency and SO2 mass transfer flux, and compared the performance with that in a hydrophobic one. A series of experiments were performed at various conditions over a NaOH concentration range of 0-1.0 mol·L-1, a liquid flow rate range of 30-180 ml·min-1, a gas flow rate range of 120-1000 ml·min-1, an inlet SO2 concentration range of 400-2000 μl·L-1, and a temperature range of 10-35℃. It was found that the hydrophilic membrane was more competitive when using a NaOH concentration higher than 0.2 mol·L-1. Furthermore, it can be inferred that the hydrophilic α-Al2O3 membrane exhibited exceptional long-term stability under 480 h continuous operation.

Key words: Absorption, Membrane contactor, Ceramic membrane, Hydrophilic, Desulfurization

摘要: Hydrophilic ceramic membranes would be potential candidates for membrane gas absorption if they could be applied to appropriate separation processes. This study highlights a novel concept for the practical implementation of SO2 absorption in hydrophilic ceramic membrane that exhibits outstanding thermal and mechanical stabilities. With this aim, we investigated experimentally the performance of SO2 absorption into aqueous sodium hydroxide (NaOH) solution in a hydrophilic alumina (Al2O3) membrane contactor in terms of SO2 removal efficiency and SO2 mass transfer flux, and compared the performance with that in a hydrophobic one. A series of experiments were performed at various conditions over a NaOH concentration range of 0-1.0 mol·L-1, a liquid flow rate range of 30-180 ml·min-1, a gas flow rate range of 120-1000 ml·min-1, an inlet SO2 concentration range of 400-2000 μl·L-1, and a temperature range of 10-35℃. It was found that the hydrophilic membrane was more competitive when using a NaOH concentration higher than 0.2 mol·L-1. Furthermore, it can be inferred that the hydrophilic α-Al2O3 membrane exhibited exceptional long-term stability under 480 h continuous operation.

关键词: Absorption, Membrane contactor, Ceramic membrane, Hydrophilic, Desulfurization