Techno-Economic Assessment for the Best Flexible Operation of the CO 2 Removal Section by Potassium Taurate Solvent in a Coal-Fired Power Plant

Stefania Moioli (), Elvira Spatolisano and Laura A. Pellegrini
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Stefania Moioli: GASP—Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy
Elvira Spatolisano: GASP—Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy
Laura A. Pellegrini: GASP—Group on Advanced Separation Processes & GAS Processing, Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

Energies, 2024, vol. 17, issue 7, 1-12

Abstract: Alternative solvents based on aqueous solutions of amino acids have been recently developed as possible substitutes for Mono Ethanol Amine (MEA) for CO 2 removal from flue gas streams. The potassium taurate solvent has the advantages of degradation resistance, low toxicity and low energy requirements for its regeneration. With any type of solvent, CO 2 removal applied to a power production plant decreases the revenues obtained from selling electricity because of the energy requirements. Operating the CO 2 removal section in flexible mode avoids significant effects on the profits of the power plant, while accomplishing environmental regulations. This work is the first journal paper focusing on the application in flexible mode of the potassium taurate system for treating a flue gas stream from a 500 MW coal-fired power plant. Techno-economic evaluations are performed to determine the best operating conditions considering the variation in the electricity demand and its price, and different values of carbon tax. In the summer period, with high electricity prices and demands, carbon tax values between 45 EUR/t CO2 and 60 EUR/t CO2 favor CO 2 absorption in the flexible mode, without periods of full CO 2 emissions during the day.

Keywords: CO 2 removal; potassium taurate solvent; process design; energy requirement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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