Simulation of Natural Gas Treatment for Acid Gas Removal Using the Ternary Blend of MDEA, AEEA, and NMP

Natural gas (NG) requires treatment to eliminate sulphur compounds and acid gases, including carbon dioxide (CO2) hydrogen sulphide (H2S), ensure that it meets the sale transportation specifications. Depending on region is obtained from, concentrations of gases could reach up 90%. Different technologies are available capture CO2 H2S from NG absorb them with chemical or physical solvents; occasionally, a mixture solvents employed achieve desired results. Nonetheless, absorption most reliable utilised technology worldwide. Unfortunately, high energy demand for solvent regeneration in stripping columns presents an obstacle. Consequently, present study proposes novel, ternary-hybrid N-methyl diethanolamine (MDEA), amino ethyl ethanol amine (AEEA), 2-pyrrolidone (NMP) overcome issue reduce reboiler duty. The levels (45%) (1%) as base case, while simulation was performed Aspen HYSYS® V12.1 software evaluate different parameters affect duty removal unit (AGRU). first validated, recorded errors below 5%. As temperature increased 35 °C 70 °C, molar flow sweet also rose. Nevertheless, pressure demonstrated opposite trend, where elevating 1000 kPa 8000 diminished gas. Furthermore, lower rate required specification using blend, due presence higher concentration hybrid solvent, thus necessitating 64.2% 76.8%, respectively, less than MDEA + AEEA.