Research Article

Simulation of Methane Recovery from Gas Hydrates Combined with Storing Carbon Dioxide as Hydrates

Table 1

Property data of hydrates and sediment.

ParameterValueParameterValue

Hydrate number CH4 hydrate5.90Hydrate number CO2 hydrate7.67
Molar mass CH4 hydrate122.3 g/moleMolar mass CO2 hydrate174.3 g/mole
Density CH4 hydrate7,522 mol/m3Density CO2 hydrate6,350 mol/m3
Specific heat CH4 hydrate256.8 J/(kg*K)Specific heat CH4 hydrate362.5 J/(kg*K)
Thermal conductivity CH4 hydrate0.5 W/(m*K)Thermal conductivity CH4 hydrate0.5 W/(m*K)
Dissociation enthalpy CH4 hydrate−54 kJ/moleDissociation enthalpy CO2 hydrate−65 kJ/mole
Sediment density2,600 kg/m3Sediment thermal conductivity3.9 W/(m*K)
Sediment specific heat1,000 J/(kg*K)