Naslov
Simulation and analysis of post-combustion CO2 capture by absorption

Autori
Matijašević, Ljubica ; Dejanović, Igor ; Kovačić, Gabrijela

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
12th International Conference on Environmental Science and Technology (CEST2011) : proceedings / Lekkas, T.D. - Mitilene : University of Aegean, 2011, A1161-A1168

ISBN
978-960-7475-49-7

Skup
International Conference on Environmental Science and Technology (12 ; 2011)

Mjesto i datum
Rodos, Grčka, 08.09.2011. - 10.09.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
power plant ; carbon capture ; carbon dioxide ; chemical absorption

Sažetak
This paper presents an analysis of a system for CO2 capture from a power plant's flue gas by chemical absorption in aqueous monoethanolamine (MEA), which has previously been commercially applied to systems with smaller capacity. The process of CO2 capture by absorption, together with the facility for the compression of separated CO2, was modelled in ChemCAD process simulator. Based on simulations, best operating conditions were chosen. Equipment sizing and assessment of investment and operating costs were also carried out, and based on that data cost-effectiveness analysis of the plant was made. This system for CO2 capture is a part of a new power block which will be built on the site of an existing local power plant. In this work is shown that CO2 capture technology is very energy and capital intensive and that its implementation reduces the energy efficiency of the power plant by almost 10 %. Also, this system requires up to 50% increase in cooling water use. Because of significant capital cost and great parasitic effect on power plant net electrical capacity, 50% increase of electricity cost was estimated in the case of this capture system application. The cost of CO2 avoided for power plant with CO2 capture system installed (only capture plant) was estimated to 38.5 €/t CO2. This is the value that determines the emission units’ price at which this system would be cost effective. If this system would be subsequently retrofitted (which is more likely) the price would be even higher, and for the entire CCS system, which includes transport and geological storage of captured CO2, the price value could reach and outgrow 50 €/t CO2.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA