CO2 Capture by Tertiary Amine Absorbents: A Performance Comparison Study
CO2 Capture by Tertiary Amine Absorbents: A Performance Comparison Study
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DOI：
10.1021/ie400825u
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发表时间：
2013-06-19
影响因子：
4.2
通讯作者：
Onoda, Masami
中科院分区：
文献类型：
--
作者：
Chowdhury, Firoz Alam;Yamada, Hidetaka;Onoda, Masami
在本论文中，我们研究了24种叔胺类吸收剂，包括3种合成胺，并对它们的化学结构进行了系统的修饰。使用质量分数为30%的胺的水溶液来评价其捕集二氧化碳的性能。在实验室进行了气体洗涤、汽液平衡和反应量热实验，获得了各吸收剂的吸收速率、CO2吸收量、循环CO2容量和反应热。并与传统的三级吸收剂N-甲基二乙醇胺(MDEA)进行了比较。在所研究的七种吸收剂中，有七种表现良好，具有较高的吸收率和循环容量。在这些吸收剂中，有些比MDEA的反应热低。这些结果为发现潜在的叔胺类吸收剂提供了基本指南，这些吸收剂可能导致在二氧化碳捕集领域开发新的吸收系统。
In the present paper, we investigated CO2 capture with 24 tertiary amine absorbents, including three synthetic amines, with systematic modification of their chemical structures. Aqueous solutions of the amines (mass fraction 30%) were used to evaluate the performance for CO2 capture. Gas scrubbing, vapor-liquid equilibrium (VLE), and reaction calorimetry experiments were conducted in the laboratory to obtain the absorption rate, the amount of CO2 absorbed, cyclic CO2 capacity, and heat of reaction for each absorbent. The results for these absorbents were compared with the conventional tertiary absorbent N-methyldiethanolamine (MDEA). Seven of the investigated absorbents performed well with high absorption rates and cyclic capacities. Among these absorbents, some showed lower heats of reaction than MDEA. These results provide basic guidelines for discovery of potential tertiary amine-based absorbents that may lead to development of new absorbent systems in the CO2 capture area.