ATR-FTIR Model Development and Verification for Qualitative and Quantitative Analysis in MDEA–H 2 O–MEG/TEG–CO 2 Blends

Usman Shoukat, Eva Baumeister and Hanna K. Knuutila
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Usman Shoukat: Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
Eva Baumeister: Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
Hanna K. Knuutila: Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway

Energies, 2019, vol. 12, issue 17, 1-15

Abstract: A Fourier transform infrared (FTIR) spectroscopy method was developed to identify and quantify various components in an amine-based combined acid gas and water removal process. In this work, an attenuated total reflectance (ATR) probe was used. A partial least-squares (PLS) regression model was also developed using up to four components (methyl diethanolamine (MDEA)-H 2 O-CO 2 -ethylene glycol/triethylene glycol (MEG/TEG)), and it was successfully validated. The model was applied on thermally degraded CO 2 -loaded MDEA blends to predict the weight percentages of MDEA, H 2 O, CO 2 , and MEG or TEG to test the performance spectrum. The results confirmed that FTIR could be used as a simpler, quicker and reliable tool to identify and quantify various compounds such as MDEA, MEG/TEG, H 2 O and CO 2 simultaneously in a combined acid gas and water removal process.

Keywords: Fourier transform infrared (FTIR) spectroscopy; acid gas removal; N-Methyldiethanolamine; monoethylene glycol; triethylene glycol (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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