dc.contributor.author | Wagaarachchige, Jayangi Dinesha | |
dc.date.accessioned | 2024-05-22T07:14:12Z | |
dc.date.available | 2024-05-22T07:14:12Z | |
dc.date.issued | 2024-05-29 | |
dc.identifier.isbn | 978-82-7206-863-8 | |
dc.identifier.issn | 2535-5252 | |
dc.identifier.uri | https://hdl.handle.net/11250/3131029 | |
dc.description.abstract | The central idea of the dissertation is to provide insight into options to reducing the cost of amine-based PCC technology. Solvent management and high energy demand are two of the challenges that have increased the operational cost of the technology.
To enable effective solvent management in a capture plant, the chemical absorptiondesorption process needs to be regularly monitored and controlled. Articles 1 and 2 and Proceeding 2 present a study that offers process analytical technology (PAT) tools for solvent management using Fourier-transform infrared (FTIR) spectroscopic data. This study provides a tool to establish degradation boundaries, initiation, and completion stages of the reclaiming process. Furthermore, these findings provide insight to maintain the accuracy and effectiveness of regression models when CO2 and amine species in the solvent are monitored over an extended timeframe. Moreover, this study demonstrates the potential use of regression model prediction residuals for the detection and monitoring of degradation species. Furthermore, this work entails the means of providing chemometric assistance for a study aimed at conversion of in-service degradation species of the MEA solvent to MEA (Articles 7 and 8).
Introduction of non-aqueous solvents is a new alternative to current aqueous solvents and is influential in reducing the solvent regeneration-energy demands. Articles 3, 4, 6, and Proceeding 1 report results of a proposed sulfolane-based low viscosity non-aqueous solvent. In Article 3, the proposed solvent produces monomethyl carbonates (MMC) through a reaction with CO2; MMC can be desorbed at 58°C. Article 4 disclose blend composition optimization and the effect of flue gas humidity on CO2 up-take including respective solvent speciation. This solvent forms DPAH+ carbamate, causing the blend to solidify under certain conditions.
Additionally, this thesis presents an initiative in applying chemometric tools with the goal of understanding the chemistry behind the simultaneous SOx/ NOx removal process. Results show that Raman spectroscopy is a practical tool for quantifying species in an aqueous SOx/ NOx removal system (Article 5).
Overall, this dissertation presents the prospective application of PAT tools, specifically spectroscopy with chemometrics, in monitoring and optimizing of CO2 capture solvents. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | University of South-Eastern Norway | en_US |
dc.relation.ispartofseries | Doctoral dissertations at the University of South-Eastern Norway;196 | |
dc.relation.haspart | Article 1: Wagaarachchige, J.D., Idris, Z., Khatibzadeh, A., Drageset, A., Jens, K.-J. & Halstensen, M.: Demonstration of CO2 Capture Process Monitoring and Solvent Degradation Detection by Chemometrics at the Technology Centre Mongstad CO2 Capture Plant. Industrial & Engineering Chemistry Research, 62(25), (2023), 9747-9754. https://doi.org/10.1021/acs.iecr.3c00134 | en_US |
dc.relation.haspart | Article 2: Wagaarachchige, J.D., Idris, Z., Khatibzadeh, A., Drageset, A., Jens, K.-J. & Halstensen, M.: Demonstration of CO2 Capture Process Monitoring and Solvent Degradation Detection by Chemometrics at the Technology Centre Mongstad CO2 Capture Plant. Part II. Manuscript submitted for publication in Industrial & Engineering Chemistry Research. Unpublished work copyright 2024 American Chemical Society | en_US |
dc.relation.haspart | Article 3: Wagaarachchige, J.D., Idris, Z., Arstad, B., Kummamuru, N.B., Sætre, K.A.S., Halstensen, M. & Jens, K.-J.: Low-Viscosity Nonaqueous Sulfolane-Amine-Methanol Solvent Blend for Reversible CO2 Capture. Industrial & Engineering Chemistry Research, 61(17), (2022), 5942-5951. https://doi.org/10.1021/acs.iecr.1c04946 | en_US |
dc.relation.haspart | Article 4: Wagaarachchige, J.D., Idris, Z., Arstad, B., Halstensen, M. & Jens, K.-J.: Low-Viscosity Nonaqueous Sulfolane-Amine-Methanol Solvent Blend for Reversible CO2 capture: Part II. Blend Optimization, Water Effect, and Speciation. Manuscript submitted for publication in Industrial & Engineering Chemistry Research. Unpublished work copyright 2024 American Chemical Society | en_US |
dc.relation.haspart | Article 5: Johansson, J., Wagaarachchige, J.D., Normann, F., Idris, Z., Haugen, E.R., Halstensen, M., Jinadasa, W., Jens, K.-J. & Andersson, K.: Influence of Nitrogen Dioxide Absorption on the Sulfite Oxidation Rate in the Presence of Oxygen: Online Raman Measurements. Industrial & Engineering Chemistry Research, 62(49), (2023), 21048-21056. https://doi.org/10.1021/acs.iecr.3c01015 | en_US |
dc.relation.haspart | Article 6: Wagaarachchige, J.D., Idris, Z., Halstensen, M. & Jens, K.-J.: Fast water-lean solvent screening using FTIR spectroscopy: In-situ (in-line) monitoring using an ATR reaction cell integrated with on-line monitoring attached to a liquid-flowcell. Proceedings of the TCCS-11 - Trondheim Conference on CO2 Capture, Transport and Storage, Trondheim, Norway, June 21-23, 2021, 2021, pp. 547-552. https://hdl.handle.net/11250/2787331 | en_US |
dc.relation.haspart | Article 7: Mereu, F., Wagaarachchige, J.D., Jens, K.-J. & Idris, Z.: Application of Multivariate Data Analysis of Raman Spectroscopy Spectra of 2-oxazolidinone. The First SIMS EUROSIM Conference on Modelling and Simulation, SIMS EUROSIM 2021, and 62nd International Conference of Scandinavian Simulation Society, SIMS 2021, September 21-23, Virtual Conference, Finland, pp. 16-21. https://doi.org/10.3384/ecp2118516 | en_US |
dc.relation.haspart | Article 8: Mereu, F., Wagaarachchige, J.D., Idris, Z., Halstensen, M. & Jens, K.-J.: Response Surface Modelling to Reduce CO2 Capture Solvent Cost by Conversion of OZD to MEA. In Proceedings of the 64th International Conference of Scandinavian Simulation Society (SIMS), Västerås, Sweden, 2023-10-19, 2023, pp. 14-20. https://doi.org/10.3384/ecp200003 | en_US |
dc.relation.haspart | Proceeding 1: Wagaarachchige, J.D., Idris, Z., Arstad, B., Kummamuru, N.B., Sætre, K.A.S., Halstensen, M. & Jens, K.-J.: A New Sulfolane based Solvent for CO2 Capture (April 1, 2021). Proceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 2021. http://dx.doi.org/10.2139/ssrn.3817192 | en_US |
dc.relation.haspart | Proceeding 2: Wagaarachchige, J.D., Idris, Z., Khatibzadeh, A., Drageset, A., Jens, K.-J., & Halstensen, M.: Demonstration of CO2 Capture Process Monitoring and Solvent Degradation Detection by Chemometrics – CO2 Technology Centre Mongstad. Presented in TCCS-12 - Trondheim Conference on CO2 Capture, Transport and Storage, Trondheim, Norway, June 19-21, 2023 | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en | |
dc.subject | spectroscopy | en_US |
dc.subject | PLS-R modelling | en_US |
dc.subject | solvent management | en_US |
dc.subject | CO2 capture | en_US |
dc.subject | non-aqueous solvents | en_US |
dc.subject | sulfolane | en_US |
dc.subject | methanol | en_US |
dc.subject | diisopropylamine | en_US |
dc.subject | raman | en_US |
dc.subject | FTIR | en_US |
dc.subject | model residuals | en_US |
dc.subject | degradation | en_US |
dc.subject | reclaiming | en_US |
dc.title | Pushing Technology Boundaries: Monitoring and Optimization of Carbon Capture Solvents | en_US |
dc.type | Doctoral thesis | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © The Author, except otherwise stated | en_US |
dc.subject.nsi | VDP::Technology: 500::Chemical engineering: 560::Chemical process engineering: 562 | en_US |