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中文摘要：
在四正丁基溴化铵（TBAB）和环戊烷（CP）双添加剂体系下进行了一级水合物法分离烟气中CO2的研究。对比了纯体系和双添加剂体系对水合物生成过程及分离效果的影响。获得了合适的操作条件（温度276.15 K,压力2.0～3.3 MPa）、初始液气比（0.78）、添加剂浓度（CP体积分数为0.6%）。在合适条件下,双添加剂体系相比纯TBAB体系水合过程的载气量达至1.5～2.0倍,剩余气相中CO2摩尔分数由17%降至7%,去除率由40%～50%上升到60%～70%。实验表明,双添加剂体系在水合物法CO2分离技术的分离效果及节能方面存在潜力,为工业化水合物法净化烟气提供了参考和标准。
英文摘要：
Experiments for CO2 separation from flue gas（CO2/N2） are conducted with the one-stage hydrate method using TBAB（tetra-n-butyl ammonium bromide,C16H36NBr） and CP（cyclopentane,C5H10） as joint additives.The effects of TBAB and TBAB/CP on hydrate formation and separation efficiency were investigated and compared.The suitable conditions of 276.15 K and 2.0-3.3 MPa along with initial liquid gas volume ratio of 0.78 and the CP volume concentration of 0.6 % were obtained.Under such conditions,the gas uptake with TBAB/CP joint additives was 1.5-2.0 times higher than that in TBAB solution.Meanwhile,the CO2 concentration in residual gas phase could be decreased from 17% to 7%.The split fraction of 60%-70% was also higher than that of 40%-50% in pure TBAB solution.The result demonstrated that TBAB/CP system was evidently helpful for hydrate-based CO2 capture from the flue gast.
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