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包炜军; 李会泉; 张懿
Source Publication化工学报
Other AbstractIndirect CO2 mineral sequestration that involves two separate steps,with acetic acid as the recycling medium,was limited by a crystallization conversion of only 20% in the second gas-liquid reactive crystallization step.In this paper,the second carbonation step was greatly improved by coupling reactive crystallization and solvent extraction with the introduction of an organic solvent,tributyl phosphate(TBP),to the process.The effect of the initial concentration of calcium acetate in the aqueous solution on the crystallization conversion was studied experimentally.The obtained calcium conversion was above 40%,which was one time higher than that reported in the literature.Based on the mechanism discussion and thermodynamic equilibrium calculation analysis,it can be concluded that adding TBP to the step can consume the produced acetic acid,and it is in favor of the precipitation of calcium carbonate.While the challenge presented by the strong interaction between calcium ions and acetate ions for further improving crystallization conversion cannot be solved only by the addition of TBP.
Keyword二氧化碳 矿物碳酸化 反应结晶 过程强化
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Cited Times:7[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
包炜军,李会泉,张懿. 强化碳酸化固定CO_2反应过程分析与机理探讨[J]. 化工学报,2009(09):2332-2338.
APA 包炜军,李会泉,&张懿.(2009).强化碳酸化固定CO_2反应过程分析与机理探讨.化工学报(09),2332-2338.
MLA 包炜军,et al."强化碳酸化固定CO_2反应过程分析与机理探讨".化工学报 .09(2009):2332-2338.
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