混合醇胺AMP/MDEA水溶液吸收二氧化碳之反應動力學數據量測研究

Measurement of the Reaction Kinetics of CO2 with aqueous AMP/MDEA solutions

黃裕銘(Yu-Ming Hwang)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300451

摘要

摘要
本研究主要探討CO2 與混合醇胺 AMP / MDEA 水溶液的反應動力學，系統濃度範圍AMP (0.1-0.5 kmol·m-3) / MDEA (1.0kmol·m-3) 及AMP (0.1-0.5 kmol·m-3) / MDEA (1.5 kmol·m-3)，溫度是30、35及40°C。
對於AMP以及MDEA對二氧化碳的反應以兩性離子與一級反應機構來描述，計算結果之平均絕對誤差為4.0 %，為了計算反應動力學數據，必須先量測N2O在醇胺水溶液的亨利常數與擴散係數再利用N2O類比理論來求得CO2在醇胺水溶液的亨利常數及擴散係數。
研究結果發現添加少量的AMP在MDEA水溶液系統中能有效的提高吸收二氧化碳的吸收速率，所得之反應動力學模式，可用來計算CO2在AMP/MDEA/H2O中之反應速率，可作為設計吸收設備以AMP/MDEA/H2O 為吸收溶液之動力學基礎數據。

關鍵字

醇胺

並列摘要

Abstract
This object of research is to measure the reaction kinetics data for the reaction between CO2 and 2-amino-2-methyl-1-propanol (AMP) + Methyldiethanolamine (MDEA) solutions. The systems to be studied are：AMP (0.1-0.5 kmol·m-3) / MDEA (1.0 kmol·m-3) and AMP (0.1-0.5 kmol·m-3) / MDEA (1.5 kmol·m-3). The temperature ranges from 30 to 40℃.
A first order reaction rate for CO2-MDEA and zwitterion mechanism reaction rate for CO2-AMP reactions was used to model the CO2 absorption into AMP/MDEA/H2O. The average absolute percentage deviations for the calculation of the this system are 4.0%. In order to find out the kinetics data, the solubility and the diffusivity of N2O in amine aqueous solutions must be measured and using the N2O analogy, the solubility and the diffusivity of CO2 in amine aqueous can be estimated.
By introducing AMP into MDEA aqueous, the CO2 absorption rate can be effectively increased. The results of this study can be used for gas absorption unit design of which AMP/MDEA/H2O as gas absorbents.

並列關鍵字

amine

參考文獻

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