Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL PHASE EQUILIBRIUM OF CARBON DIOXIDE HYDRATES WITH MEG ABOVE THE UPPER QUADRUPLE POINT
Submission Author:
José Carlos Cordeiro Junior , PR
Co-Authors:
José Carlos Cordeiro Junior, Moisés Marcelino Neto, Rigoberto Morales, Amadeu Sum
Presenter: José Carlos Cordeiro Junior
doi://10.26678/ABCM.ENCIT2018.CIT18-0530
Abstract
Equilibrium curves for carbon dioxide hydrates have an upper quadruple point, which appears due to the condensation of carbon dioxide. Above this point, there is a scarcity of experimental data in the literature, especially with the presence of additives, such as monoethylene glycol (MEG). In order to better understand the behavior of the system in this region, an experimental procedure was developed to work with high pressures to obtain liquid water-hydrate-condensed carbon dioxide (LW-H-LCO2) equilibrium curves. The experimental three-phase equilibrium data was compared with those in the literature, showing consistent agreement. MEG was used as a thermodynamic inhibitor in the aqueous phase in order to evaluate its inhibition effect on the equilibrium of hydrates.
Keywords
Hydrates, phase equilibrium, Carbon dioxide, upper quadruple point, MEG
