Improving CO 2 Capture Efficiency Through Novel CLOU-Based Fuel Reactor Configuration in Chemical Looping Combustion

Anna Zylka (), Jaroslaw Krzywanski, Tomasz Czakiert, Marcin Sosnowski, Karolina Grabowska, Dorian Skrobek and Lukasz Lasek
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Anna Zylka: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland
Jaroslaw Krzywanski: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland
Tomasz Czakiert: Department of Advanced Energy Technologies, Czestochowa University of Technology, Dabrowskiego 73, 42-201 Czestochowa, Poland
Marcin Sosnowski: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland
Karolina Grabowska: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland
Dorian Skrobek: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland
Lukasz Lasek: Department of Advanced Computational Methods, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Aleja Armii Krajowej 13/15, 42-200 Czestochowa, Poland

Energies, 2025, vol. 18, issue 17, 1-22

Abstract: Climate change and global decarbonization targets drive the search for more efficient and cost-effective combustion technologies. Chemical looping combustion (CLC) using solid oxygen carriers with chemical looping with oxygen uncoupling (CLOU) functionality has attracted growing interest due to its inherent potential for CO 2 capture without requiring additional separation processes. This study introduces a conceptual proof-of-concept design of a novel fuel reactor design for a dual-fluidized bed CLC system operating with solid fuels. The new configuration incorporates a perforated conveyor for circulating CLOU-type oxygen carriers, thereby avoiding direct contact between the carriers and the fuel–ash mixture. This approach prevents the slip of unburned fuel and ash into the air reactor, minimizes the loss of oxygen carriers, and improves combustion efficiency. The proposed reactor concept enables the generation of flue gas with a high CO 2 concentration, which facilitates its subsequent capture and reduces the energy penalty associated with traditional CCS techniques. The improved phase separation and better control of oxygen carrier residence time contribute to enhanced system performance and reduced operating costs. Preliminary process simulations conducted in the CeSFaMB environment, using boundary and initial conditions from a CLC test rig, were included to illustrate the potential of the design. Experimental validation is outside the scope of this study and will be presented in future work once the dedicated test facility is operational. This contribution should therefore be regarded as a conceptual proof-of-concept study, and experimental validation together with techno-economic benchmarking will be reported in follow-up publications once the dedicated test facility is operational.

Keywords: chemical looping combustion; CLOU; oxygen carrier; novel fuel reactor; fluidized bed; CO 2 capture; net-zero emissions; sustainability; energy efficiency (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: 2025
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