A Combined Experimental and Computational Study on the Effect of the Reactor Configuration and Operational Procedures on the Formation, Growth and Dissociation of Carbon Dioxide Hydrate

Chrysoula Tallarou, Anastasios Labropoulos (), Stavros Stavropoulos, Nikos Pasadakis, Emmanuel Stamatakis, Spyros Bellas, Raoof Gholami () and Ioannis V. Yentekakis
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Chrysoula Tallarou: Institute of Geoenergy, Foundation for Research and Technology—Hellas, Building M1, University Campus, Akrotiri, 73100 Chania, Greece
Anastasios Labropoulos: Institute of Geoenergy, Foundation for Research and Technology—Hellas, Building M1, University Campus, Akrotiri, 73100 Chania, Greece
Stavros Stavropoulos: School of Mineral Resources Engineering, Technical University of Crete, Kounoupidiana, Akrotiri, 73100 Chania, Greece
Nikos Pasadakis: School of Mineral Resources Engineering, Technical University of Crete, Kounoupidiana, Akrotiri, 73100 Chania, Greece
Emmanuel Stamatakis: Institute of Geoenergy, Foundation for Research and Technology—Hellas, Building M1, University Campus, Akrotiri, 73100 Chania, Greece
Spyros Bellas: Institute of Geoenergy, Foundation for Research and Technology—Hellas, Building M1, University Campus, Akrotiri, 73100 Chania, Greece
Raoof Gholami: Department of Energy Resources, University of Stavanger, Kjell Arholms Gate 41, 4021 Stavanger, Norway
Ioannis V. Yentekakis: Institute of Geoenergy, Foundation for Research and Technology—Hellas, Building M1, University Campus, Akrotiri, 73100 Chania, Greece

Sustainability, 2024, vol. 16, issue 20, 1-24

Abstract: Clathrate hydrate-based technologies are considered promising and sustainable alternatives for the effective management of the climate change risks related to emissions of carbon dioxide produced by human activities. This work presents a combined experimental and computational investigation of the effects of the operational procedures and characteristics of the experimental configuration, on the phase diagrams of CO 2 -H 2 O systems and CO 2 hydrates’ formation, growth and dissociation conditions. The operational modes involved (i) the incremental (step-wise) temperature cycling and (ii) the continuous temperature cycling processes, in the framework of an isochoric pressure search method. Also, two different high-pressure PVT configurations were used, of which one encompassed a stirred tank reactor and the other incorporated an autoclave of constant volume with magnetic agitation. The experimental results implied a dependence of the subcooling degree, ( P , T ) conditions for hydrate formation and dissociation, and thermal stability of the hydrate phase on the applied temperature cycling mode and the technical features of the utilized PVT configuration. The experimental findings were complemented by a thermodynamic simulation model and other calculation approaches, with the aim to resolve the phase diagrams including the CO 2 dissolution over the entire range of the applied ( P , T ) conditions.

Keywords: sustainable decarbonization; CO 2 hydrates; CO 2 -H 2 O phase diagrams; gas–liquid–hydrate phase equilibrium; induction period; hydrate dissociation; CO 2 capture (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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