Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO 2 Capture

Szabolcs Szima, Carlos Arnaiz del Pozo, Schalk Cloete, Szabolcs Fogarasi, Ángel Jiménez Álvaro, Ana-Maria Cormos, Calin-Cristian Cormos and Shahriar Amini
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Szabolcs Szima: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj Napoca, Romania
Carlos Arnaiz del Pozo: Departamento de Ingeniería Energética, Escuela Técnica Superior de Ingenieros Industriales (ETSII), Universidad de Politécnica de Madrid, c/José Gutiérrez Abascal n°2, 28006 Madrid, Spain
Schalk Cloete: Flow Technology Group, SINTEF Industry, 7031 Trondheim, Norway
Szabolcs Fogarasi: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj Napoca, Romania
Ángel Jiménez Álvaro: Departamento de Ingeniería Energética, Escuela Técnica Superior de Ingenieros Industriales (ETSII), Universidad de Politécnica de Madrid, c/José Gutiérrez Abascal n°2, 28006 Madrid, Spain
Ana-Maria Cormos: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj Napoca, Romania
Calin-Cristian Cormos: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj Napoca, Romania
Shahriar Amini: Flow Technology Group, SINTEF Industry, 7031 Trondheim, Norway

Clean Technol., 2021, vol. 3, issue 3, 1-24

Abstract: Cost-effective CO 2 capture and storage (CCS) is critical for the rapid global decarbonization effort recommended by climate science. The increase in levelized cost of electricity (LCOE) of plants with CCS is primarily associated to the large energy penalty involved in CO 2 capture. This study therefore evaluates three high-efficiency CCS concepts based on integrated gasification combined cycles (IGCC): (1) gas switching combustion (GSC), (2) GSC with added natural gas firing (GSC-AF) to increase the turbine inlet temperature, and (3) oxygen production pre-combustion (OPPC) that replaces the air separation unit (ASU) with more efficient gas switching oxygen production (GSOP) reactors. Relative to a supercritical pulverized coal benchmark, these options returned CO 2 avoidance costs of 37.8, 22.4 and 37.5 €/ton (including CO 2 transport and storage), respectively. Thus, despite the higher fuel cost and emissions associated with added natural gas firing, the GSC-AF configuration emerged as the most promising solution. This advantage is maintained even at CO 2 prices of 100 €/ton, after which hydrogen firing can be used to avoid further CO 2 cost escalations. The GSC-AF case also shows lower sensitivity to uncertain economic parameters such as discount rate and capacity factor, outperforms other clean energy benchmarks, offers flexibility benefits for balancing wind and solar power, and can achieve significant further performance gains from the use of more advanced gas turbine technology. Based on all these insights, the GSC-AF configuration is identified as a promising solution for further development.

Keywords: gas switching combustion; gas switching oxygen production; integrated gasification combined cycle; chemical looping combustion; CCS (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2021
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