چكيده به لاتين
This study was to aimd modeling the solubility of elemental sulfur in sour gas. In the processes of production and exploitation of sour gas, the gas-solid phase equilibrium between sour gas and elemental sulfur is important for achieving the amount of sulfur dissolved in the gas, and consequently the amount of elemental sulfur deposited. Various studies have been carried out on the solubility of elemental sulfur in sour gas, which is discussed in the second chapter. These studies include laboratory work and thermodynamic modeling. In this thesis, we use the PHSC equation of state to calculate the fuzzy equilibrium in the gas and solid phases.
Thermodynamic modeling was performed by MATLAB R2014a software for 11 different gas combinations including Methane, Carbon dioxide, Hydrogen sulfide and Nitrogen at different temperatures and pressures. The parameters of the PHSC equation of state were also applied to all the materials studied by matching with experimental data.
The results of the modeling were very close to the experimental values and the average error was about 4.5% per cent, which compared with other modeling performed in this regard, the PHSC equation of state showed better performance. In the end, the effective factors on solubility, which include temperature, pressure and composition of the gas mixture, were investigated and analyzed. Hydrogen sulfide had the highest impact on the solubility of the compounds in the gas mixture.
Keywords: Sour gas, Elemental sulfur, PHSC equation of state, Thermodynamic modeling, Solubility of elemental sulfur.
