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Applications of membrane integration technology in glycol - water mixture refining

Authors： JI lin, ZHANG Yufeng*, LIU Dongqing, LIU Enhua, NI Lei, ZHANG Liwan

Units： State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Material Science and Engineering, Tianjin Polytechnic University，Tianjin, 300387

KeyWords： membrane integration technology, recovered ethylene glycol-water mixture; nanofiltration, reverse osmosis, ion exchange resin.

ClassificationCode：TQ09;X783

year,volume(issue):pagination： 2014,34(5):84-88

Abstract：

The ingredients of blending waste liquid of ethylene glycol/water were analyzed, which came from ethylene glycol commercial manufactory company. The main reason had been identified which cause heavy smell, dark color and high conductivity for. Under 1.5MPa pressure, concentrate glycol liquids were filtrated by polyamide nanofiltration membrane in velocity of 45L/m2.h to be bleached. Volatile small organic molecules were deodorized by active carbon filled column under 0.5L/m2.h. Organic electrolytes dissolving in glycol-water mixtures were removed by reverse osmosis for low viscosity liquid with the speed of 35L/m2.h under 1.8MPa and ion exchange resin columns for high viscosity liquid. The process conditions and factors of each unit were also investigated and discuss, and the operation route was designed for whole purification process according to the actual situation of the nature of products and factory integration technology.

Funds：

国家高技术研究发展计划(863计划), “高性能分离膜材料的规模化关键技术（一期）”项目之“高通量纳滤膜材料的规模化制备技术”课题资助（2012AA03A602）.

AuthorIntro：

季麟（1962-），博士，天津市人，从事膜分离应用技术研究. *通讯作者，E-mail：zyf9182@163.com

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