Compositional analysis of the gas phase for the CO2+N2+tetra-n-butylammonium bromide aqueous solution systems under hydrate stability conditions

▸ Gas phase composition in equilibrium with hydrate and aqueous solution is measured. ▸ The investigated feed gases are CO2 (0.151/0.399/0.749 mole fraction)+N2. ▸ The 0.05 and 0.30 mass fractions TBAB aqueous solutions have been studied. ▸ An isochoric method combined with a GC technique was used for the measurements. ▸ Significant change of CO2 concentration in the gas phase is observed.