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Optimized Chemical Absorption Process for CO 2 Removal in a Steel Plant

Author

Listed:
  • Valentina Schiattarella

    (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, 20133 Milan, Italy)

  • 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, 20133 Milan, Italy)

Abstract

The steel industry is a significant contributor to global CO 2 emissions due to the highly energy-intensive nature of its production processes. Specifically, steel production involves the conversion of iron ore into steel through processes such as the blast furnace method, which result in significant greenhouse gas emissions due to the combustion of fossil fuels and the chemical reactions involved. To address this challenge, Carbon Capture Utilization and Storage (CCUS) technologies are essential for reducing emissions by capturing CO 2 at its source, preventing its release into the atmosphere. This study focuses on a French steel plant with an annual production capacity of 6.6 million tons of steel and seeks to optimize the chemical absorption process by using a 30 wt.% MonoEthanolAmine (MEA) aqueous solution. To the authors’ knowledge, studies on this solvent, widely used for treating other types of flue gases, are still not present in the literature for the application to this gaseous stream. The goal is to minimize the thermal energy required for solvent regeneration by optimizing some key parameters. Additionally, an economic analysis is carried out, with a particular focus on different achievable CO 2 recovery ratios, with costs quantified as 102.48, 104.47, and 224.36 [$/t CO 2 removed] for 90%, 95%, and 99% CO 2 recovery, respectively.

Suggested Citation

  • Valentina Schiattarella & Stefania Moioli, 2025. "Optimized Chemical Absorption Process for CO 2 Removal in a Steel Plant," Energies, MDPI, vol. 18(18), pages 1-21, September.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:18:p:5026-:d:1754743
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    References listed on IDEAS

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    1. Kwak, No-Sang & Lee, Ji Hyun & Lee, In Young & Jang, Kyung Ryoung & Shim, Jae-Goo, 2012. "A study of the CO2 capture pilot plant by amine absorption," Energy, Elsevier, vol. 47(1), pages 41-46.
    2. Vinjarapu, Sai Hema Bhavya & Neerup, Randi & Larsen, Anders Hellerup & Jørsboe, Jens Kristian & Villadsen, Sebastian Nis Bay & Jensen, Søren & Karlsson, Jakob Lindkvist & Kappel, Jannik & Lassen, Henr, 2024. "Results from pilot-scale CO2 capture testing using 30 wt% MEA at a Waste-to-Energy facility: Optimisation through parametric analysis," Applied Energy, Elsevier, vol. 355(C).
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