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https://hdl.handle.net/123456789/1826| Τύπος: | Ανακοίνωση σε συνέδριο |
| Τίτλος: | Assessment of equilibrium behaviour for phase changesSolvents used in CO2 capture |
| Συγγραφέας: | [EL] Τζιράκης, Φραγκίσκος[EN] Tzirakis, Fragkiskos [EL] Τσιβιντζέλης, Ιωάννης[EN] Tsivintzelis, Ioannis [EL] Παπαδόπουλος, Αθανάσιος[EN] Papadopoulos, Athanasios [EL] Σεφερλής, Πάνος[EN] Seferlis, Panos |
| Ημερομηνία: | 08/07/2021 |
| Περίληψη: | Aqueous amine solutions that phase separate at elevated temperatures were suggested as solvents for CO2 capture applications, in order to minimize the heat duty in the desorber. In this study, the phase behavior of various aqueous amine solutions, was experimentally investigated. A new experimental apparatus was developed and evaluated by determining the CO2 solubility in aqueous monoethanolamine (MEA) solutions at 40, 60 and 80 oC. Upon validation of the experimental setup, new experimental data were obtained for aqueous solutions containing N,N-dimethylcyclohexylamine (DMCA), methylcyclohexylamine (MCA) and 2-amino-2-methyl-1-propanol (AMP) at 40, 60 and 90 oC, which exhibit phase change behavior. It was observed that the investigated solutions present vapor – liquid equilibrium (VLE) at 40 oC and vapor-liquid-liquid equilibrium (VLLE) at 60 and 90 oC for CO2 partial pressures up to app. 70 kPa (Tzirakis et al., 2019). In addition, a Computer Aided Molecular Design and Pareto optimization procedure resulted in the suggestion of N-cyclohexyl-1,3-propanediamine (CHAP) for CO2 capture. Subsequently, experimental VLE data were obtained for CO2 systems with aqueous solutions of CHAP and mixtures of CHAP and DMCA, at 40-90 oC and CO2 partial pressures ranging from 10 to 100 kPa. CHAP solutions exhibited high CO2 loading values and VLE behavior at all investigated conditions. The addition of DMCA in such CHAP aqueous mixtures (DMCA:CHAP 3:1 mole ratio) resulted in the liquid-liquid phase separation and, thus, the observation of a VLLE behavior, rendering such solvent system as a potential phase change solvent (Papadopoulos et al., 2020). The results were also compared to DMCA:CHAP (2:1) and DMCA:3-Methylaminopropylamine (MAPA) (2:1). Finally, volatility losses, corrosivity cyclic capacity were estimated. The obtained equilibrium behavior results enabled the design of pilot scale absorption units for the study of the solvent mixtures performance in absorption conditions and the development of thermodynamic models for the simulation of capture process systems. |
| Γλώσσα: | Αγγλικά |
| Τόπος δημοσίευσης: | Paris, France |
| Σελίδες: | 1 |
| Θεματική κατηγορία: | [EL] Χημική μηχανική[EN] Chemical Engineering |
| Λέξεις-κλειδιά: | CO2 capture |
| Κάτοχος πνευματικών δικαιωμάτων: | © The Author(s) 2021 |
| Όνομα εκδήλωσης: | ESAT 2021 conference |
| Τοποθεσία εκδήλωσης: | France |
| Ημ/νία έναρξης εκδήλωσης: | 05/07/2021 |
| Ημ/νία λήξης εκδήλωσης: | 09/07/2021 |
| Σημειώσεις: | https://www.ifpenergiesnouvelles.com/article/esat-2021-conference The work is co-financed by Greece and EU (European Social Fund - ЕSF) through the Operational Program ‘’Human Resources Development, Education and Lifelong Learning’’ in the context of the project "Reinforcement of Postdoctoral Researchers - 2nd cycle" (MIS 5033021), implemented by State Scholarships Foundation (IKY). |
| Εμφανίζεται στις συλλογές: | Μεταδιδακτορικοί ερευνητές |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
|---|---|---|---|---|---|---|---|
| ΕSΑΤ_6.07.2021.pptx | Tzirakis Presentation for ESAT in Paris | 4.03 MB | Microsoft Powerpoint | - |  | Δείτε/ανοίξτε |