کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8090664 1521982 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical speciation of CO2 absorption in aqueous monoethanolamine investigated by in situ Raman spectroscopy
ترجمه فارسی عنوان
شکل گیری شیمیایی جذب دی اکسید کربن در مونو اتانولامین آبی مورد بررسی قرار گرفته در محل اسپکتروسکوپی رامان
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
A quantitative analysis method of chemical species in liquid phase during CO2 absorption into monoethanolamine was developed for Raman spectroscopy. Band envelopes in the spectral region between 300 and 3100 cm−1 were resolved with Gaussian Lorentzian function. Spectroscopic characterization of MEA, protonated MEA, carbamate, bicarbonate, carbonate and molecular CO2 in aqueous was performed. Calibration curves were constructed with area ratio plotted against species concentration. Concentration of individual chemical species in liquid phase can be systematically determined using the correlations introduced. Experiments of CO2 solubility in aqueous MEA were carried out for pressure ranges from 1 to 60 bar and three temperatures (303.15, 313.15 and 323.15) K with in situ Raman measurement. Absorption capacity was determined with conventional gas pressure drop method and newly developed Raman spectroscopic analysis method based on total carbon containing species in liquid phase. Results depict good accuracy and reproducibility of Raman measurement method. Chemical speciation during CO2 absorption into aqueous solution of 30% MEA at pressure up to 60 bar was evaluated. The findings from present work will improve the understanding of phase equilibrium behavior associated with absorption reactions and can be employed for monitoring, analysis and optimization of CO2 capture process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 39, August 2015, Pages 139-147
نویسندگان
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