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Iranian Journal of Chemistry and Chemical Engineering، جلد ۲۹، شماره ۱، صفحات ۱۱۱-۱۲۴
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عنوان انگلیسی Correlation and Prediction of Solubility of CO2 in Amine Aqueous Solutions
چکیده انگلیسی مقاله The solubility of CO2 in the primary, secondary, tertiary and sterically hindered amine aqueous solutions at various conditions was studied. In the present work, the Modified Kent-Eisenberg (M-KE), the Extended Debye-Hückel (E-DH) and the Pitzer models were employed to study the solubility of CO2 in amine aqueous solutions. Two explicit equations are presented to evaluate the concentration of H+ as well as the equilibrium constants of protonation reactions for the tertiary and sterically hindered amine aqueous solutions. Using the M-KE model, the equilibrium constants ofprotonationreactionsof amines were correlated in termsoftemperature, CO2 partial pressure and amine concentration. Also the E-DH and Pitzer models were used to correlate the solubility of CO2 in MDEA aqueous solution. The binary interaction parameters for the models studied in this work as well as the parameters for the equilibrium constants of protonation reactions were obtained using the Davidon-Fletcher-Powell (DFP) minimization method. The results show that the M-KE, E-DH and the Pitzer models can accurately predict the corresponding experimental data. Although the solubility data for CO2 in amine aqueous solutions have been reported in the literature to a large extent, accurate data are required to model the CO2 absorption process. Therefore, two criteria for the tertiary and sterically hindered amines were presented using the M-KE model to screen the experimental data.
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نویسندگان مقاله مهدی گوهررخی |
department of chemical engineering, science amp;amp; research campus, islamic azad university, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

وحید تقی خانی |
faculty of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

سیروس قطبی |
faculty of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

علی اکبر safekordi | ali akbar
faculty of chemical and petroleum engineering, sharif university of technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

حسام نجیبی |
department of gas engineering, petroleum university of technology, ahwaz, i.r. iran

نشانی اینترنتی http://www.ijcce.ac.ir/article_9908_395af6ba574ddf329d82b7001f296984.pdf
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