Post combustion carbon capture with supported amine sorbents: From adsorbent characterization to process simulation and optimization

• Supported amine sorbent with high N 2 selectivity and good moisture tolerance studied. Optimization of a 6-step VSA cycle to identify optimum operating conditions. Possible meet DOE purity recovery specifications wet flue gas at 70 90 °C. Huge temperature swings in the can degrade over long term use. sorbents are extensively studied literature due their tolerating abilities. Most work this group adsorbents pertain experimental studies on adsorption capacity, kinetics, stability tests powdered sorbents. Only handful published have carried out thermodynamic assessment process modelling evaluate performance supported context pressure swing processes. In work, we evaluated commercially available mesoporous silica (PERLKAT) adsorbent grafted N-[3-(trimethoxysilyl)propyl] ethylenediamine for post-combustion carbon capture by vacuum (VSA). Experiments were first obtain information single component ternary equilibrium data. The has total capacity 0.95 mmol/g 0.15 bar CO 0.8 0.05 respectively Ternary experiments low relative humidity shows that is not affected presence moisture. These results used as input simulate optimize dual reflux (VSA) cycle. Detailed optimization it possible 90% 95% using our adsorbent. minimum specific energy 1 MJ/kg captured an electric basis when operated