Energy Consumption in Amine Process For Carbon Dioxide Capture

Carbon Dioxide capture technologies have recently attracted considerable attention because of the need to reduce CO2 emission. A highly effective technology is chemical absorption using amine solvents. Two amine solvents were chosen for this project, which are Mono Ethanolamine (MEA), and di-ethanol amine (DEA).
The aim of this project is to present a comprehensive analysis of the energy performance of the CO2 capture process. The study is done by comparing the energy consumption of the process using MEA and DEA at different operational parameters. The comparison is made using HYSYS simulation models. Data from an actual natural gas sweetening process were used to validate the model, whose results were found to fit the data well. The results of the study show that the process using DEA has lower overall energy consumption. It also shows that the best trade-off between CO2 capture capacity and energy consumption using DEA occurs at solvent concentration of 49.9% and solvent feed temperature of 55◦C.