HYDRATE DISSOCIATION CURVE CALCULATOR

Vapor liquid equilibrium software
Vapor liquid equilibrium software
Vapor liquid equilibrium software

Hydrate Dissociation Curve Calculator

Gas hydrate phase equilibrium curve / gas hydrate prediction curve / gas hydrate dissociation curve is a plot of hydrate forming temperature vs. hydrate forming pressure for low molecular weight hydrocarbons like methane, ethane, propane and butane, inert gases like argon, krypton and xenon and inorganic gases like carbon dioxide, hydrogen sulfide, nitrogen and oxygen and multicomponent mixtures containing these compounds existing with water. Calculations involving hydrate phase equilibrium are extremely complex which can only be performed using modern computers with complex software programs.

Gas hydrates are inclusion compounds of low molecular weight hydrocarbons like methane, ethane, propane and butane, inert gases like argon, krypton and xenon and inorganic gases like carbon dioxide, hydrogen sulfide, nitrogen and oxygen with water. Gas hydrates are ice like in structure but are formed at above ice forming temperature at elevated pressures. Gas hydrates are common occurrence in sub-sea crude oil pipelines where suitable temperature and pressure conditions for hydrate formation exist. Gas hydrates are undesirable in oil pipelines as hydrate formation in oil pipelines results in difficult to remove blockage of pipeline resulting in loss of production, money, resources and time.  However gas hydrates have some useful practical applications also. Gas hydrates can be used for water desalination as well as storage of gases. In both cases when hydrates are undesirable or when they are used practically, the knowledge of hydrate formation temperature and pressure is required. Also other properties like type of hydrates formed at the formation temperature and pressure, the fractional filling of large and small cavities of a gas hydrate with gas, the equilibrium composition of vapor, liquid and gas hydrate at the formation temperature and pressure, hydration number of gas hydrates (number of water molecules associated with each molecule of hydrate former), density of gas hydrate etc. are also required in various calculations and simulations involving gas hydrates.

Gas hydrate dissociation software / gas hydrate prediction software / gas hydrate equilibrium software from EQ-COMP can calculate these values for hydrate forming compounds like methane, ethane, propane, n-butane, isobutane, cyclopropane, ethylene, propylene, nitrogen, oxygen, argon, carbon dioxide and hydrogen sulfide and their mixtures with other non-hydrate forming non polar hydrocarbons. Also hydrate equilibrium curves for pure hydrocarbons and hydrocarbon mixtures in presence of hydrate inhibitors like salts (LiCl, NaCl, KCl, CsCl, CaCl2 and MgCl2), salt mixtures, organic liquids (methanol, ethylene glycol, ethanol, 1-propanol, 2-propanol, t-butyl alcohol and glycerol) , sugars (deoxyribose, ribose, fructose, sucrose, glucose and maltose), urea and formamide can be calculated using EQ-COMP.

Gas hydrate equilibrium curve software from EQ-COMP uses most accurate and rigorous statistical thermodynamic model for clathrates  developed by Van der Waals and Platteeuw along with Predictive Peng Robinson 78 (PPR 78) equation to predict gas hydrate equilibrium curve / gas hydrate dissociation curve for hydrocarbon mixtures.

Gas hydrate dissociation / prediction / equilibrium Curve calculator / software calculates:

Equilibrium temperature, compositions, K values and compressibility factor values at pressure values throughout the bubble point curve at increments of 0.4 bars.

Equilibrium temperature, compositions, K values and compressibility factor values at pressure values throughout the hydrocarbon dew point curve at increments of 0.4 bars.

Phase envelope temperature at increments of 0.4 bars throughout the phase envelope and phase envelope curve.

Hydrate point temperature, liquid and vapour compositions, type of hydrates (S I or S II), total liquid mole fraction fractional cage filling for small and large cavities for all hydrate formers present in the hydrocarbon mixture, hydrocarbon liquid fraction, hydration number of hydrates and density of hydrates  throughout the hydrate dissociation curve at increments of 0.4 bars.

Hydrate point temperature at increments of 0.4 bars throughout the hydrate dissociation curve and hydrate dissociation curve.

Sample Result – Download (no inhibitor)

                                    Download (salt mixture as inhibitor)

                                    Download (methanol as inhibitor)

Calculation cost : USD 200

For requesting results of gas hydrate equilibrium curve calculation module and other modules, visit VLE CALCULATOR page