Pretreatment of Isopropanol Solution from Pharmaceutical Industry and Pervaporation Dehydration by NaA Zeolite Membranes

作     者：余从立 刘艳梅 陈纲领 顾学红 邢卫红 

作者机构：State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing University of Technology Nanjlng210009 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2011年第19卷第6期

页      面：904-910页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 081704[工学-应用化学] 0817[工学-化学工程与技术] 08[工学] 081701[工学-化学工程] 0703[理学-化学] 

基　　金：Supported by the National t)asic Research Program of China (2009CB623403)  the National High Technology Research and De velopment Program of China (2009AA034802)  the National Natural Science Foundation of China (20706030  U0834004)  the Science & Technology Support Program (Industry) of Jiangsu Province of China (BE2008141)  the Natural Science Foundation of the Jiangsu Higher Education Institutions (09KJA530002) and 333 High-Level Personnel Training Project in Jiangsu Province. ** To whom correspondence should be addressed. E-mail: Xuehonggu@yahoo.com 

主　　题：NaA zeolite membrane isopropanol dehydration pervaporation 

摘      要：NaA zeolite membranes with 80 cm in length and 12.8 mm in outer diameter were prepared by our research group cooperating with Nanjing Jiusi Hi-Tech Co., China. The influence of dissolved inorganic salts and pH value in the feed of isopropanol （IPA） solution on NaA zeolite membranes was investigated. It was found that both factors exhibited strong influence on the stability of NaA zeolite membranes. A set of pretreatment steps such as pH adjustment and distillation of the IPA solution were proposed to improve stability for pervaporation dehydration. An industrial-scale pervaporation facility with 52 m2 membrane area was built to dehydrate IPA solution from industrial cephalosporin production. The facility was continuously operated at 368-378 K to dehydrate IPA solution from water mass content of 15%-20% to less than 2% with a feed flow rate of 400-500 L·h^-1 and an average water flux of 1-1.5 kg·m^-2·h-1. The successful application of this facility suggested a promising application of NaA zeolite mem-brane for IPA recovery from pharmaceutical production.