Aspen Plus Simulation of CO2 Removal from Coal and Gas Fired Power Plants

This paper presents a description of the CO2 removal process of 500MW coal and gas fired power plants. The parameters and other operating conditions for Aspen Plus rate based model were selected to achieve 85% of CO2 removal. The effects of absorber pressure and packing height on re-boiler duty are...

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Bibliographic Details
Published in:Energy procedia 2012, Vol.23, p.391-399
Main Authors: P.R.Arachchige, Udara Sampath, Melaaen, Morten Christian
Format: Article
Language:English
Subjects:
Absorption
Aspen Plus
Carbon capture
Re-boiler duty
Removal efficiency
Sensitivity analysis
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Summary:This paper presents a description of the CO2 removal process of 500MW coal and gas fired power plants. The parameters and other operating conditions for Aspen Plus rate based model were selected to achieve 85% of CO2 removal. The effects of absorber pressure and packing height on re-boiler duty are studied. Re-boiler duty is decreasing with the increase of packing height and absorber pressure. The effect of solvent properties on CO2 removal efficiency is also analyzed. The removal efficiency increases as the increase of MEA concentration and temperature. When the lean loading of MEA solvent is increased, efficiency of the removal process is decreasing. The liquid and vapour phase temperature profiles and CO2 loading in the absorber are analyzed to understand the model behaviour.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2012.06.060