Amine-based absorption processes are widely used in natural gas processing, but recently they have been considered for CO2 capture from flue gas emitted from thermal power plants. The main issue of amine used in the CO2 capture process is the high cost of solvent regeneration. So, this issue can be solved by using efficient amine absorbent. The amine type absorbents employed in the experimentation were an aqueous blend of 2-(Diethylamino)ethanol (DEEA) with different types of diamine activators such as piperazine (PZ), 2-(2-aminoethylamino)ethanol (AEEA), hexamethylenediamine (HMDA), ethylenediamine (EDA), and 3-(Dimethylamino)-1-propylamine (DMAPA). An absorption experiment was performed to evaluate the CO2 absorption performance in terms of CO2 loading, absorption capacity, and absorption rate. The experiment was performed to assess the CO2 desorption performance in terms of desorption capacity, desorption rate, cyclic capacity, and regeneration efficiency. From the results of absorption-desorption and comparison with benchmark amine absorbent MEA, the aqueous blend of DEEA and HMDA indicated the best performance for CO2 capture applications among all the tested amine blends.

中文翻译：

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低CO2气体捕集CO2高效吸收剂的选择

基于胺的吸收工艺广泛用于天然气加工，但最近它们被考虑用于从热电厂排放的烟道气中捕获 CO2。CO2 捕集过程中使用的胺的主要问题是溶剂再生的高成本。因此，这个问题可以通过使用高效的胺吸收剂来解决。实验中使用的胺类吸收剂是 2-(二乙氨基)乙醇 (DEEA) 与不同类型的二胺活化剂如哌嗪 (PZ)、2-(2-氨基乙氨基)乙醇 (AEEA)、六亚甲基二胺 (HMDA) 的水性混合物)、乙二胺 (EDA) 和 3-(二甲氨基)-1-丙胺 (DMAPA)。进行吸收实验以根据 CO2 负载、吸收能力和吸收速率评估 CO2 吸收性能。进行该实验是为了从解吸能力、解吸速率、循环容量和再生效率方面评估 CO2 解吸性能。从吸收-解吸结果和与基准胺吸收剂 MEA 的比较来看，DEEA 和 HMDA 的水性混合物表明在所有测试的胺混合物中，CO2 捕获应用的性能最好。