Absorption of acid gases (CO2, H2S) from natural gas using a ternary blend of N-methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP), and Sulfolane

Abstract. Natural gas (NG) must be treated to remove sulphur compounds and acid gases i.e., carbon dioxide (CO2) hydrogen sulfide (H2S) ensure that it complies with requirements for sale transportation. More than 95% of the NG processing plants are operated through removal unit (AGRU) using aqueous amine solvent in removing sour components from hydrocarbon due availability at a low cost. However, main limitation this process is high operating cost providing sufficient thermal energy reboiler regeneration. Meanwhile, duty requirement generally increases CO2 efficiency as higher consumption required strip off more significant amount rich solvent. This current study addresses absorption performance ternary hybrid solvents MDEA, AMP, Sulfolane. A on effects solubility H2S was performed varying pressure (1000-6000 kPa) temperatures (25°C-50°C) Aspen HYSYS®V12.1. The results revealed concentration sweet increased decrease pressure, while increasing temperature gas. future will look regeneration blend