Dynamic Simulation and Optimization of CO2 Absorption from Ethane Gas in Absorption Tower using ASPEN-HYSYS Process Simulator Software

Abstract

The aim of this research is to improve the sweetening processes of ethane gas in 9 and 10 south pars using DEA solvent. For this purpose of this work, Aspen-Hysys software was used for the dynamic simulation and amine Pkg equation was chosen from the fluid property package for calculating the thermodynamic properties of the process. The absorber configuration was according to the design and manufacture company. This research shows that pressure variation does not have any considerable changes on absorption process, while both amine inlet temperature and volumetric flow rate increment enhances the absorption tower efficiency. The effect of temperature was very significant as shown by the dynamic study plots. The optimum condition for CO2 absorption from a stream of ethane gas with molar flow rate of 2118 kgmol h-1was 75 m3h-1 of amine at 30 oC and 24 bar. This optimized condition is economical, safe and feasible.