TY - CONF A1 - Esche, E. A1 - Kraemer, B. A1 - Müller, D. A1 - Meyer, Klas A1 - Zientek, Nicolai A1 - Maiwald, Michael A1 - Wozny, G. T1 - Improved desorption control via Raman spectroscopy N2 - In this contribution a Raman spectrometer based control structure for the heating of a desorption column is proposed. For this purpose calibration experiments for the absorption of carbon dioxide using monoethanolamine solutions are carried out and calibration models are developed to measure both carbon dioxide liquid loads and monoethanolamine mass fractions. The calibration experiments are supported by online NMR spectroscopy to accurately measure the appearance of all species in the electrolyte system. Both models are tested during the plant operation of a mini-plant for the oxidative coupling of methane and the proof of concept for the control structure is given. The Raman spectroscopy implemented in the ATEX conform mini-plant shows a reliable and robust performance being even indifferent to impurities hindering the GC analysis. T2 - 20th International Conference of Process Engineering and Chemical Plant Design CY - Berlin, Germany DA - 15.10.2014 KW - Absorption KW - Carbon capture KW - Raman spectroscopy KW - desorption control KW - Prozessanalytik KW - Process analytical technology PY - 2014 UR - https://www.verfahrenstechnik.tu-berlin.de/fileadmin/fg158/Dokumente/Manuskripte/2014/20th-ICPEPD-Proceedings.pdf SN - 978-3-00-047364-7 SP - 223 EP - 233 PB - Technische Universität Berlin CY - Berlin AN - OPUS4-37399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -