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1CO_2 capture from binary mixture via forming hydrate with the help of tetra-n-butyl ammonium bromide显示文摘Hydrate formation rate and separation effect on the capture of CO2 from binary mixture via forming hydrate with 5 wt% tetra-n-butyl ammonium bromide (TBAB) solution were studied. The results showed that the induction time was 5 min, and the hydrate formation process finished in 1 h at 4.5 °C and 4.01 MPa. The hydrate formation rate constant reached the maximum of 1.84×10-7 mol2/(s J) with the feed pressure of 7.30 MPa. The CO2 recovery was about 45% in the feed pressure range from 4.30 to 7.30 MPa. Under the feed pressure of 4.30 MPa, the maximum separation factor and CO2 concentration in hydrate phase were 7.3 and 38.2 mol%, respectively. The results demonstrated that TBAB accelerated hydrate formation and enriched CO2 in hydrate phase under the gentle condition.Shifeng Li Shuanshi Fan Jingqu Wang Xuemei Lang Deqing Liang 2009Journal of Natural Gas Chemistry2009,18,1:22
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