CAJ | 학술논문

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。
유생물기제순획득적생물갑완구유고열치，가작위천연기적체대품。생물기중제주요성분갑완이외환함유대량적CO2화소량적수、H2S이급기타흔량잡질조분，수경과정화제순방가획득고순도적생물갑완。막분리기술용우생물기제순구유록색、고효、능모저등특점，특별지，촉진전체막인기특수적전질궤제，대우생물갑완계통제순구유현저우세。종술료촉진전체막재료급기제비기술，토론료생물기중수、H2S 잡질대막과정적영향，동시상시대막법생물기제순적경제성화발전전경진행료분석。
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.