Equilibrium Conditions of Structure H Hydrates of Hydrogen in the Presence of Hydrocarbon Promoters

In this work, hydrogen structure H (sH) hydrate phase equilibria in the presence of eleven promoters including n-alkanes, n-alkenes, alkynes and cycloalkanes has been predicted. The van der Waals–Platteeuw (vdWP) model has been used for prediction of the hydrate phase. The equilibria of hydrogen/water system has been predicted using Valerama Patel Teja (VPT) equation of state using Non Density Dependent (NDD) mixing rule. Due to the lack of experimental solubility data of hydrogen in these promoters, in this work, equilibria of the hydrogen/promoters systems has been modeled using EoS-GE model, using UNIFAC Excess Gibbs Energy and Modified Horun Vidal (MHV1) mixing rule. Results show reasonable agreement with the experimental data.

Keywords:

Gas Hydrate , SH , Hydrogen , Promotors , Storage , GE-EoS , Mixing Rule