Multi-scale Modeling and Study of Aerosol Growth on Amine-Based CO₂ Capture Absorber

Abstract

<jats:p>In this study, a monoethanolamine aerosol growth model was developed to investigate the aerosol growth factor. Interactions among the internal conditions in an absorber were considered in this aerosol model. Additionally, an experiment was conducted to measure aerosol particle size, for collecting in-house validation data. Sucrose was used as the aerosol nuclei instead of sulfuric acid to prevent the corrosion of equipment used in the experiment. Experimental results showed that the outlet aerosol sizes increased to the same size regardless of the sucrose concentrations. The aerosol growth model was validated using the in-house experimental data. The aerosol growth model efficiently predicted the aerosol size. For investigating aerosol growth effects, particle number concentration was determined to be the primary factor affecting aerosol growth and amine emissions. When the particle number concentration increased, the aerosol size decreased, whereas the MEA emission increased.</jats:p>

Review of carbon capture absorbents for CO2utilization

“…The primary amine, MEA) is the most well-known and employed absorbent within the CO 2 capture industry. 34,60,61 MEA was popularized due to its exceptional CO 2 removal capability (87.1-100%) while producing a nearly pure CO 2 of > 99%. Other primary amines include, 2-(2-aminoethoxy) ethanol (DGA), 1-amino-2-propanol (1A2P) and 2-amino-1-butanol (2A1B) but none have reached the commercialization level of MEA.…”