A numerical model of a Chemical Looping Combustion (CLC) fixed bed reactors network for CH4 combustion is developed and studied in the present paper. The network is based on a parallel arrangement of couples of reactors in series. For every couple, the first reactor is filled with a Cu-based oxygen carrier (OC) while the second one exploits a Ni-based OC. The developed model allows to evaluate the performances of the proposed system in terms of both generated thermal power and flow and composition of the gaseous output streams. • For the same bed length and cross-sectional area, the proposed two-stage CLC reactor has similar performances to a single carrier one in terms of outlet gas temperature, allowing however for shorter cycle times and requiring a lower amount of active phases contents with respect to this latter. Moreover, fewer units to be arranged in the network are required for the proposed two-stage CLC system than the single-stage one.

A two carriers reactor configuration for chemical-looping combustion in a packed-bed

Erasmo Mancusi
Conceptualization
;
Piero Bareschino
Conceptualization
;
Annunziata Forgione
Investigation
;
Francesco Pepe
Supervision
2020-01-01

Abstract

A numerical model of a Chemical Looping Combustion (CLC) fixed bed reactors network for CH4 combustion is developed and studied in the present paper. The network is based on a parallel arrangement of couples of reactors in series. For every couple, the first reactor is filled with a Cu-based oxygen carrier (OC) while the second one exploits a Ni-based OC. The developed model allows to evaluate the performances of the proposed system in terms of both generated thermal power and flow and composition of the gaseous output streams. • For the same bed length and cross-sectional area, the proposed two-stage CLC reactor has similar performances to a single carrier one in terms of outlet gas temperature, allowing however for shorter cycle times and requiring a lower amount of active phases contents with respect to this latter. Moreover, fewer units to be arranged in the network are required for the proposed two-stage CLC system than the single-stage one.
2020
Chemical Looping Combustion
CO2 capture
Two-stage CLC
Packed beds
Power production
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12070/44592
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