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Effects of Tetrabutyl-(ammonium/phosphonium) Salts on Clathrate Hydrate Capture of CO2 from Simulated Flue Gas
Li, Xiao-Sen1,2; Zhan, Hao1,2,3; Xu, Chun-Gang1,2,3; Zeng, Zhi-Yong1,2; Lv, Qiu-Nan1,2; Yan, Ke-Feng1,2
2012-04-01
Source PublicationENERGY & FUELS
Volume26Issue:4Pages:2518-2527
AbstractQuaternary salts can form semi-clathrate hydrates, caging gas molecules in the empty small cages, which have the potential for the separation of mixtures, such as the simulated flue gas [CO2 (17 mol %)/N-2 mixtures]. To enhance the CO2 separation from CO2/N-2 binary mixtures, three quaternary salts, tetra-n-butylammonium bromide (TBAB), tetra-n-butylphosphonium bromide (TBPB), and tetra-n-butylammonium nitrate (TBANO(3)), are investigated at different operating conditions by a one-stage hydrate separation process. The results indicate that the induction time for each quaternary salt system can be shortened to less than 5 min under the optimal operating condition. Meanwhile, each quaternary salt can significantly promote the CO2 separation under its optimal condition. TBANO(3) displays the strongest capability in terms of gas consumption and CO2 separation with the pressure drop of 0.72 MPa and the highest split fraction of 67% and separation factor of 15.54 compared to the other two salts. Besides, CO2 can be further removed from 17 to 7 mol % in the presence of TBANO(3). TBPB also has a potential effect on CO2 separation with the pressure drop of 0.57 MPa and the separation factor of 14.06. The result demonstrates that TBANO(3) and TBPB are two better additives for efficient hydrate capture of CO2.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef3000399
WOS Subject ExtendedEnergy & Fuels ; Engineering
WOS KeywordBUTYL AMMONIUM BROMIDE ; CARBON-DIOXIDE ; PHASE-EQUILIBRIUM ; IONIC LIQUIDS ; SEPARATION ; HYDROGEN ; TBAB ; CRYSTALLIZATION ; CYCLOPENTANE ; EFFICIENT
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000302924400060
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10573
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Li, Xiao-Sen,Zhan, Hao,Xu, Chun-Gang,et al. Effects of Tetrabutyl-(ammonium/phosphonium) Salts on Clathrate Hydrate Capture of CO2 from Simulated Flue Gas[J]. ENERGY & FUELS,2012,26(4):2518-2527.
APA Li, Xiao-Sen,Zhan, Hao,Xu, Chun-Gang,Zeng, Zhi-Yong,Lv, Qiu-Nan,&Yan, Ke-Feng.(2012).Effects of Tetrabutyl-(ammonium/phosphonium) Salts on Clathrate Hydrate Capture of CO2 from Simulated Flue Gas.ENERGY & FUELS,26(4),2518-2527.
MLA Li, Xiao-Sen,et al."Effects of Tetrabutyl-(ammonium/phosphonium) Salts on Clathrate Hydrate Capture of CO2 from Simulated Flue Gas".ENERGY & FUELS 26.4(2012):2518-2527.
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