期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 47, 期 1, 页码 34-38出版社
AMER CHEMICAL SOC
DOI: 10.1021/ie070783y
关键词
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N,N-Diethylethanolamine (DEEA), which can be prepared from renewable resources, represents a candidate alkanolamine for CO2 removal from gaseous streams. In this work, the reaction of CO2 with aqueous solutions containing N,N-diethylethanolamine (DEEA) was studied in a stirred cell reactor with a plane, horizontal gas-liquid interface, in the range of temperatures 298-308 K. The DEEA concentration in the aqueous solutions was varied in the range 2-3 kmol/m(3). The liquid-side mass transfer coefficient and a combined parameter comprising the reaction rate constant and the diffusivity and solubility of CO2 in DEEA solutions were evaluated. The effect of the addition of piperazine (PIP) as a possible absorption activator was studied, and it was found that even with a small amount of PIP (0.1 kmol/m(3)) added, the CO2 absorption rate increased.
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