Rate-based simulation and comparison of various promoters for CO2 capture in industrial DEA-promoted potassium carbonate absorption unit

摘要

Diethanolamine (DEA)-promoted potassium carbonate process for CO2 removal is modelled using rate-based approach and Electrolyte NRTL model. Acceptable agreements between the simulation results and the experimental data are achieved. The effectiveness of monoethanolamine (MEA), diglycolamine (DGA), diisopropanolamine (DIPA), and methyldiethanolamine (MDEA) as promoters are investigated. MEA shows promising performance for CO2 removal. The CO2 absorptions by DGA and DIPA are good enough, but their prices are higher than MEA and DEA. The CO2 absorption by MDEA is not significant and it cannot be used as a promoter. A parametric study is performed to assess the effects of important process parameters. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.