Hydrate Dissociation Condition Measurement of CO₂-Rich Mixed Gas in the Presence of Methanol/Ethylene Glycol and Mixed Methanol/Ethylene Glycol + Electrolyte Aqueous Solution

Abstract

In this work, the hydrate dissociation condition for carbon dioxide rich gas mixture in the presence of methanol, methanol + sodium chloride or calcium chloride, and ethylene glycol, ethylene glycol + sodium chloride or calcium chloride aqueous solution, were measured and reported. The measurements are carried out at temperature and pressure range of (263.85 to 284.75) K and (2.76 to 12.08) MPa. All data were measured using the isochoric pressure search method. In order to exhibit the inhibition effect of above-mentioned aqueous solution, a comparison was made between experimental data of carbon dioxide rich gas mixture in the presence of pure water and aqueous solutions consist of inhibitor and electrolytes. Furthermore, a thermodynamic model was used to correlate the experimental values.

Kinetic Assessment of Tetramethyl Ammonium Hydroxide (Ionic Liquid) for Carbon Dioxide, Methane and Binary Mix Gas Hydrates

“…Malaysia is among the leading natural gas exporters in the world [8]. The J5 and K5 gas fields located in offshore Eastern Malaysia produces about 70-87 mol% CO 2 content natural gas [9]. This significant amount of CO 2 together with the harsh offshore conditions poses various complications for the exploration and transportation of these enormous reserves.…”

Thermodynamic Modeling Of Electrolytic Solutions of Ionic Liquids for Gas Hydrates Inhibition Applications

“…Literature data is available for the use of some ionic liquids and QASs including TEAB, TMAB, TMACl, TMAOH, EMPip-Br, EMPip-BF4 and BMIM-BF4 in presence of CO2 for hydrate inhibition. Among imdazolium based ionic liquids, Nasir et al, [37] worked on EMIM-Cl in mixture with monoethylene glycol (MEG) for inhibition of methane hydrates. These compounds have mostly been employed in THI applications.…”

Tetraethylammonium Acetate and Tetraethylammonium Bromide-Based Deep Eutectic Solvents as Thermodynamic CO2 Gas Hydrate Inhibitors

“…The ∆H diss of the systems tested in this study is presented in Table 7. It is well established that CO 2 gas hydrates form structure I hydrates [7,[51][52][53]. The main parameters that alter the dissociation enthalpy of hydrates are the hydrogen bonding of the clathrate structure and the cage occupancy of the guest molecule [54].…”