高校化学工程学报2017，Vol.31Issue(4)：802-809,8.DOI:10.3969/j.issn.1003-9015.2017.04.007
TBAB半笼型水合物法分离CO2/CH4混合气的过程研究
TBAB Semi-Clathrate Hydrate Formation and its Application in CO2 Separation from CO2/CH4 Mixture Gases
摘要
Abstract
Hydrate based gas separation (HBGS) technology is a relatively new approach for CO2 removal. Different operation conditions can significantly influence CO2 separation. Addition of tetrabutylammonium bromide (TBAB) can reduce the hydrate phase equilibrium requirements of CO2/CH4 mixture gases and enhance CO2 hydrate formation. Gas hydrate formation from a CO2/CH4 mixture in distilled water with 40% mass fraction of TBAB was examined at 3.2 MPa and different temperatures. The results indicate that CO2 separation factor increases with the decrease of gas/liquid ratio under same pressure and temperature. Meanwhile, CO2 separation factor is not fully proportio(mol) at 3.2 MPa and 286 K (supercooling degree is 6 K) with a gas/liquid volume ratio(Vg/Vl) of 0.54. CO2 gas separation factor is 4.43 under this condition.关键词
水合物/CO2分离/TBAB/半笼型/混合气Key words
hydrate/CO2 separation/tetrabutylammonium bromide (TBAB)/semi-clathrate/mixture gas分类
能源科技引用本文复制引用
臧小亚,梁德青,吴能友..TBAB半笼型水合物法分离CO2/CH4混合气的过程研究[J].高校化学工程学报,2017,31(4):802-809,8.基金项目
国家自然科学基金(51676197) （51676197）
国家海洋地质专项项目(GHZ2012006003) （GHZ2012006003）
中国科学院知识创新工程重要方向项目(KGZD-EW-301) （KGZD-EW-301）
国家高技术研究发展计划项目(2012AA061403-03). （2012AA061403-03）
