Naslov
Post-combustion CO2 capture for coal power plants: a viable solution for decarbonization of the power industry?

Autori
Tramošljika, Branimir ; Blecich, Paolo ; Bonefačić, Igor

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

Izvornik
XVIII INTERNATIONAL SCIENTIFIC CONGRESS MACHINES. TECHNOLOGIES. MATERIALS - PROCEEDINGS 2021 / Popov, Georgi ; Dikova, Tsanka - Borovets : Sofia : Scientific Technical Union of Mechanical Engineering "Industry-4.0", 2021, 59-62

Skup
XVIII International Scientific Congress: Machines. Technologies. Materials

Mjesto i datum
Borovec, Bugarska, 10.03.2021. - 13.03.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Post-Combustion Carbon Capture ; CO2 Emissions Reduction ; Coal-Fired Power Plant ; Electricity Output Penalty ; Net Efficiency Loss

Sažetak
This paper investigates the performance of post-combustion carbon capture and storage (PCCS) for pulverized coal-fired power plants. The PCCS units comprises CO2 absorption by 30 wt% monoethanolamine (MEA) solution and CO2 compression at 150 bar for permanent storage or enhanced oil recovery. The specific CO2 emissions per unit of generated electricity is 733 kgCO2/MWh in the reference power plant without PCCS while the power plant with integrated PCCS achieve specific emissions lower than 100 kgCO2/MWh, assuming a carbon capture rate of 90%. However, PCCS technology needs substantial amounts of thermal energy for absorbent regeneration and electricity for carbon capture, CO2 compression as well as for the operation of other parasitic electricity consumers. The PCCS energy requirements vastly affect the overall power plant performance. The reference coal-fired supercritical power plant (without PCCS) achieves a net efficiency of 45.1%. On the other hand, the PCCS integrated power plant achieves a net efficiency of 34.6%, a 10.5%-pts net efficiency loss over the reference scenario, when the PCCS specific energy demand is 3.5 MJth/kgCO2 for absorbent regeneration, 0.35 MJel/kgCO2 for CO2 compression and 0.15 MJel/kgCO2 for carbon capture and cooling water pumps. The corresponding electricity output penalty caused by the PCCS unit is 352 kWhel/kgCO2. PCCS technology shows promising potential for decarbonization of the power industry, but further development is necessary to improve its reliability, cost-effectiveness and to diminish its impact on the power plant performance.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA