Christophe Coquelet

Solubility measurement and modeling of water in the gas phase of the methane/water binary system at temperatures from 283.08 to 318.12 K and pressures up to 34.5 MPa

Abstract This project involves new solubility measurements of the water distribution in vapor of the methane/water binary system near the hydrate formation conditions. Isothermal vapor–liquid and vapor–hydrate equilibrium data of the vapor phase for the methane/water binary system were measured at 283.08, 288.11, 293.11, 298.11, 303.12, 308.11, 313.12 and 318.12xa0K and pressures up to 35xa0MPa. In this work a static–analytic apparatus taking advantage of a pneumatic capillary sampler (Rolsi™, Armines’ patent) developed in the Cenerg/TEP laboratory is combined with an exponential dilutor. The results are compared with literature data. The eight sets of isothermal P , y data are represented with the Peng–Robinson equation of state (PR EoS) using the Trebble–Bishnoi alpha function, the classical mixing rules for the vapor phase and a Henry’s law approach to treat the aqueous phase. The water phase distribution at hydrate forming conditions was calculated by using the Van der Waals and Platteeuw Model.

Chapter 14:Solubility of BTEX and Acid Gases in Alkanolamine Solutions in Relation to the Environment

Recent observations clearly show a dramatic increase of greenhouse and acid gas concentrations with great damages to the environment. This leads to increasing rain acidity. Acid rain are highly responsible for forest destruction and the impoverishment of nutrients. The last point affects particularl...