Modeling and simulation of packed-bed absorbers for post-combustion capture of carbon dioxide by reactive absorption in aqueous monoethanolamine solutions

摘要: Abstract Capture of carbon dioxide (CO2) from flue gases by reactive absorption in aqueous monoethanolamine (MEA) solutions can be regarded as a mature base-line technology for mitigation greenhouse gas emissions at fossil fuel-fired power plants. Reliable modeling and simulation the required packed-bed absorber is important design, scale-up, control, optimization post-combustion CO2 capture processes. Three types rate-based models have been used absorbers: continuous differential contactor model, nonequilibrium stage film reaction model. This paper begins with comparative review previous works which these MEA solutions. The model (proposed Pandya 1983) stands out kind more often works. However, order to obtain consistent formulation equations that describe material energy balances liquid phase absorber, we provide here revised mathematical derivation Pandya's By making judicious selection most suitable correlations (or methods) currently available calculation liquid-phase speciation, rate constant, mass-transfer enhancement factor, density, heat capacity, viscosity, surface tension CO2-loaded solutions, MEA, gas-phase mass transfer coefficients, effective interfacial area, packing holdup, show computer our version it possible accurate predictions temperature profiles were measured recently published well-documented pilot-plant study.