Browse > Article

Development of Commercial-scaled Pervaporation Hollow Fiber Membrane System for High Pressure and High Temperature Applications  

Yeom, Choong Kyun (SepraTek Inc.)
Kang, Kyeong Log (SepraTek Inc.)
Kim, Joo Yeol (SepraTek Inc.)
Ahn, Hyo Sung (SepraTek Inc.)
Kwon, Konho (SepraTek Inc.)
Publication Information
Membrane Journal / v.23, no.4, 2013 , pp. 257-266 More about this Journal
Abstract
The main purpose of this study is to develop a commercial scale of pervaporative process equipped with hollow fiber membrane modules, being able to effectually purify organic solvent at high temperature well over its boiling point under high vapor pressure. Three constituent technologies have been developed; 1) to fabricate braid-reinforced hollow fiber membrane stable in high pressure and high temperature application, 2) to design and fabricate a commercial scale of hollow fiber membrane module, and 3) to design and fabricate a pilot scale of pervaporation equipment system. The developed hollow fiber membrane possesses a membrane performance superior to the membrane of Sulzer (Germany) which is the most-well known for pervaporation process, and the membrane module equips hollow fiber membranes of $4.6m^2$ and the pervaporation system can treat organic liquid at 200 L/h, which is based on the dehydration of 95 wt% isopropyl alcohol (IPA). Since the membrane module is designed to flow in and pass through the inside of individual hollow fiber membrane, not to involve both the formation of feed's dead volume observed in flat-sheet membrane module and the channeling of feed occurring inside hollow fiber bundle which lower membrane performance seriously, it showed excellent separation efficiency. In particular, the module is inexpensive and has less heat loss into its surrounding, in compared with flat-sheet membrane module. In addition, permeant can be removed effectively from the outer surface of hollow fiber membrane because the applied vacuum is conveyed uniformly through space between fibers into respective fiber, even into one in the middle of the hollow fiber bundle in which the space between fibers is uniform in distance. Since the hollow fiber membrane pervaporation system is the first one ever developed in the world, our own unique proprietary technology can be secured, preoccupying technical superiority in export competitive challenges.
Keywords
pervaporation; hollow fiber membrane; high temperature and pressure dehydration; separation process;
Citations & Related Records
연도 인용수 순위
  • Reference
1 R. Rautenbach, C. Herion, M. Franke, A. A. Asfour, A. Bemquerer-Costa, and E. Bo, "Investigation of mass transport in asymmetric pervaporation membranes", J. Membr. Sci., 36, 445 (1988).   DOI
2 염충균, "브레이드 강화 중공사막", 대한민국특허 10-0842067 (2008).
3 G. W. Meindersma and M. Kuczynski, "Implementing membrane technology in the process industry", J. Membr. Sci., 113, 285 (1996).   DOI
4 F. W. Greenlaw, W. D. Price, R. A. Shelden, and E. V. Thompson, "Dependence of diffusive permeation rates on upstream and down stream pressure: II. Two component permeant", J. Membr. Sci., 2, 141 (1977).   DOI
5 염충균, "중공사 내부 투입용 중공사막", 대한민국 특허 10-0842074 (2008).
6 염충균, "Hollow fiber membrane for feeding mixture into hollow space thereof", 중국특허 출원 200910148950.8.
7 C. K. Yeom and R. Y. M. Huang, "Pervaporation separation of aqueous mixtures using crosslinked polyvinyl alcohol membranes. III. Permeation of acetic acid-water mixtures", J. Membr. Sci., 58, 33-47 (1991).   DOI
8 염충균, 강경록, 윤석복, 고효율 유기용매투과증발 분리기술 개발(과제번호 : R200702135), 지식경제부, 2009년 10월.
9 염충균, 윤석복, 박유인, "Study on the effect of membrane module configuration on pervaporation performance through model simulation" Membrane Journal, 18(4), 294-305 (2008).