高校化学工程学报2016，Vol.30Issue(6)：1241-1248,8.DOI:10.3969/j.issn.1003-9015.2016.06.002
不同浓度TBAB半笼型水合物法分离沼气中CO2过程的研究
CO2 Removal from Simulated Biogas Using Semi-Clathrate Hydrates of Different Concentration Tetra-n-Butyl Ammonium Bromide Aqueous Solutions
摘要
Abstract
Semi-clathrate hydrates of tetra-n-butyl ammonium bromide (TBAB) offer potential solution for CO2 separation from biogas. In this work, binary CO2/CH4 gas hydrate formation processes in different concentration TBAB aqueous solutions were examined under 277 K and 5 MPa. The composition change in residual gas phase is continually analyzed during the hydrate formation process, which showed “second formation” phenomenon when the concentrations of the TBAB aqueous solution are 0.79% and 1.57%. The maximum gas consumption is 0.42 mol with TBAB aqueous solution concentrations of 0.79%and 2.91%. CO2 separation factor is not proportional to TBAB solution concentration, and there is an optimum TBAB concentration for CO2 separation. When the TBAB aqueous solution concentration is 1.57%, the effective reaction time is the shortest with the best CO2 separation performance.关键词
水合物/CO2分离/四丁基溴化铵(TBAB)/沼气Key words
gas hydrate/CO2 separation/tetra-n-butyl ammonium bromide(TBAB)/biogas分类
能源科技引用本文复制引用
臧小亚,梁德青,吴能友..不同浓度TBAB半笼型水合物法分离沼气中CO2过程的研究[J].高校化学工程学报,2016,30(6):1241-1248,8.基金项目
国家自然科学基金(51676197,41276043,51206169)；国家海洋地质专项项目(GHZ2012006003)；中国科学院知识创新工程重要方向项目(KGZD-EW-301)；国家高技术研究发展计划项目(2012AA061403-03)。 （51676197,41276043,51206169）
