Experimental Studies of Reboiler Heat Duty for CO2 Desorption from Triethylenetetramine (TETA) and Triethylenetetramine (TETA) + N-Methyldiethanolamine (MDEA)

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• 作者：Xiao Luo ; Kaiyun Fu ; Zhen Yang ; Hongxia Gao ; Wichitpan Rongwong ; Zhiwu Liang ; Paitoon Tontiwachwuthikul
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2015
• 出版时间：September 2, 2015
• 年：2015
• 卷：54
• 期：34
• 页码：8554-8560
• 全文大小：383K
• ISSN：1520-5045

文摘

Amine scrubbing is regarded as one of the most suitable technologies for postcombustion CO₂ capture. However, data on regeneration energy and performance is limited in literature. In this study, the reboiler heat duties of triethylenetetramine (TETA) and triethylenetetramine (TETA) + N-methyldiethanolamine (MDEA) were experimentally evaluated in a bench-scale stripper packed with Dixon ring random packing. The effects of various operating parameters on the desorption performance (presented in terms of reboiler heat duty, Q_reboiler) were investigated, including lean loading, rich loading, amine concentration, solvent flow rate, and amine type. The experimental results showed that the Q_reboiler was very sensitive to these process parameters. In addition, a comparison of the Q_reboiler of TETA, monoethanolamine (MEA), and diethylenetriamine (DETA) was conducted to evaluate the potential for TETA鈥檚 application in the CO₂ capture process. The results obtained in this work showed that the Q_reboiler of TETA, as a function of amount of CO₂ released, is lower than that of MEA and DETA.