A novel high efficiency nanocomposite sorbent for CO2 capture has been developed based on oligomeric amine (polyethylenimine, PEI, and tetraethylenepentamine, TEPA) functionalized mesoporous silica capsules. The newly synthesized sorbents exhibit extraordinary capture capacity up to 7.9 mmol g−1 under simulated flue gas conditions (pre-humidified 10% CO2). The CO2 capture kinetics were found to be fast and reached 90% of the total capacities within the first few minutes. The effects of the mesoporous capsule features such as particle size and shell thickness on CO2 capture capacity were investigated. Larger particle size, higher interior void volume and thinner mesoporous shell thickness all improved the CO2 capacity of the sorbents. PEI impregnated sorbents showed good reversibility and stability during cyclic adsorption–regeneration tests (50 cycles).

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High efficiency nanocomposite sorbents for CO2 capture based on amine-functionalized mesoporous capsules

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Analysis Synthesis And Design Of Chemical Processes

Recent progress and new developments in post-combustion carbon-capture technology with amine based solvents

How to methanol synthesis

Energy minimization of MEA-based CO2 capture process

Densities and dynamic viscosities in liquid solutions of monoethanolamine (MEA), water, and carbon dioxide (CO2) have been measured. The mass fraction of MEA in water was (20, 30, and 40) %, and CO2 loading was between (0 and 0.5) mol CO2 per mole MEA; the temperature was varied between (25 and 80) °C. These measurements were compared with literature data of solutions without CO2 and with data for CO2 loaded solutions primarily at 25 °C. The results show that the densities and viscosities increase significantly with increasing CO2 loading at all temperatures. The measured data for the ternary system were compared with available density and viscosity correlations from Weiland et al. J. Chem. Eng. Data 1998, 43, 378−382. Agreement between the measurements and the Weiland correlations was satisfactory. The deviation increases with increased MEA concentration, CO2 loading, and temperature.

Density and Viscosity of Monoethanolamine + Water + Carbon Dioxide from (25 to 80) °C

A simplified combined cycle gas power plant and a MEA (monoethanol amine) based CO2 removal process have been simulated with the process simulation tool Aspen HYSYS. The thermodynamic properties are calculated with the Peng Robinson and Amines Property Package models which are available in Aspen HYSYS. The adiabatic efficiencies in compressors, gas turbines and steam turbines have been fitted to achieve a total thermal efficiency of 58 % in the natural gas based power plant without CO2 removal. The efficiency is reduced to about 50 % with CO2 removal. The CO2 removal in % and the energy consumption in the CO2 removal plant are calculated as a function of amine circulation rate, absorption column height, absorption temperature and steam temperature. With CO2 removal of 85 %, heat consumption is calculated to 3.7 MJ/kg CO2 removed, close to a literature value of 4.0 MJ/kg CO2.

https://www.ep.liu.se/ecp/027/008/ecp072708.pdf

Aspen HYSYS Simulation of CO2 Removal by Amine Absorption from a Gas Based Power Plant

https://cyberleninka.org/article/n/14199.pdf

Optimization of Configurations for Amine based CO2 Absorption Using Aspen HYSYS

https://cyberleninka.org/article/n/588374.pdf

Lars Erik Øi

Papers

Density and Viscosity of Monoethanolamine + Water + Carbon Dioxide from (25 to 80) °C

Aspen HYSYS Simulation of CO2 Removal by Amine Absorption from a Gas Based Power Plant

Optimization of Configurations for Amine based CO2 Absorption Using Aspen HYSYS

Simulation and Cost Comparison of CO2 Liquefaction

Comparison of Energy Consumption for Different CO2 Absorption Configurations Using Different Simulation Tools