化工学报

• 综述与专论 • 上一篇    下一篇

用于生物气提纯的促进传递膜

田志章1,2, 李奕帆1,2, 姜忠义1,2, 王少飞1,2   

  1. 1 天津化学化工协同创新中心, 天津 300072;
    2 天津大学化工学院绿色合成与转化教育部重点实验室, 天津 300072
  • 收稿日期:2013-12-29 修回日期:2014-03-22 出版日期:2014-05-05 发布日期:2014-05-05
  • 通讯作者: 姜忠义
  • 基金资助:

    国家重点基础研究发展计划项目(2013CB733500);国家高技术研究发展计划项目(2012AA03A611);国家杰出青年科学基金项目(21125627)。

Facilitated transport membranes for biogas upgrading

TIAN Zhizhang1,2, LI Yifan1,2, JIANG Zhongyi1,2, WANG Shaofei1,2   

  1. 1 Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China;
    2 Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2013-12-29 Revised:2014-03-22 Online:2014-05-05 Published:2014-05-05
  • Supported by:

    supported by the National Basic Research Program of China (2013CB733500), the National High Technology Research and Development Program of China (2012AA03A611) and the National Science Fund for Distinguished Young Scholars (21125627).

摘要: 由生物气提纯获得的生物甲烷具有高热值,可作为天然气的替代品。生物气中除主要成分甲烷以外还含有大量的CO2和少量的水、H2S以及其他痕量杂质组分,需经过净化提纯方可获得高纯度的生物甲烷。膜分离技术用于生物气提纯具有绿色、高效、能耗低等特点,特别地,促进传递膜因其特殊的传质机制,对于生物甲烷系统提纯具有显著优势。综述了促进传递膜材料及其制备技术,讨论了生物气中水、H2S杂质对膜过程的影响,同时尝试对膜法生物气提纯的经济性和发展前景进行了分析。

关键词: 生物甲烷, 生物能源, 膜, 分离, 促进传递, 水, 硫化氢

Abstract: Biomethane, purified from biogas, can be utilized as substitute for natural gas owing to its high calorific value (HCV). Typically biogas contains 60%—65% CH4, 35%—40% CO2, small amounts of hydrogen sulfide, water vapor and trace amounts of other gases. Treatment of raw biogas must be implemented in order to convert biogas into HCV biomethane. Membrane separation process exhibits many distinct advantages, including low energy consumption, high efficiency, high process flexibility and environment friendliness. Particularly, facilitated transport membrane exhibits predominant features for biogas upgrading because of its unique transport mechanism. Materials for facilitated transport membrane and corresponding preparation methods/technologies are summarized. Influences of impurities, such as water and hydrogen sulfide on membrane separation as well as some techno- economic issues are discussed. Finally, prospects on membrane separation technology in biogas upgrading are presented.

Key words: biomethane, bioenergy, membrane, separation, facilitated transport, water, hydrogen sulfide

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