CLC in packed beds using syngas and CuO/Al2O3: Model description and experimental validation

Hamers, H.P.; Gallucci, Fausto; Cobden, P.D.; Kimball, Erin; Annaland, Martin van Sint

doi:10.1016/j.apenergy.2013.12.053

Cited by 54 publications

(34 citation statements)

References 24 publications

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“…The literature on chemical looping combustion with Cu-based materials supports this affirmation, since no carbon deposition has been found during the reduction of CuO with a syngas, specially, in the presence of large amounts of steam in the feed (Abad et al, 2010;de Diego et al, 2004;Hamers et al, 2014;Mattisson et al, 2003). Moreover, the presence of calcium avoids carbon formation, even at high temperatures (Bellido et al, 2009;Choudhary et al, 1998).…”

Section: Mathematical Model Descriptionmentioning

confidence: 51%

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

Alarcón

Fernández

2015

Chemical Engineering Science

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Section: Mathematical Model Descriptionmentioning

confidence: 51%

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

Alarcón

Fernández

2015

Chemical Engineering Science

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“…An overview of the mass and energy balances is given in Table 10. The correlations used to describe the heat and mass diffusion coefficients can be found in Hamers et al 9 The kinetics for the gas/solid reactions with copper (oxidation and reduction with H 2 and CO) have been taken from Garcia-Labiano 16 with the pressure factor as published by Hamers et al 13 During TGA tests with CuO/Al 2 O 3 it has been observed that only about 75% of the material reacts at 450°C and therefore the apparent active weight content has been adjusted to 10 wt %.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

“…6 The first reactor in the TS-CLC should contain a material that is reactive at low temperatures (>450°C), while the second bed should contain a material that is stable at relatively high temperatures (1200°C). CuO (with Al 2 O 3 as support) has been demonstrated as an appropriate oxygen carrier for packed bed CLC using methane 7,8 or syngas, 9 because of its high reactivity. 6 A copper based oxygen carrier cannot be used for the one-stage CLC process, because its low melting point, but this material is still applicable in the first bed of the TS-CLC.…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of Two-Stage Packed Bed Chemical-Looping Combustion Using Syngas with CuO/Al₂O₃ and NiO/CaAl₂O₄ as Oxygen Carriers

Kooiman

Hamers

Gallucci

et al. 2015

Ind. Eng. Chem. Res.

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Recently, a novel two-stage reactor configuration for packed bed chemical-looping combustion (CLC) has been proposed and studied by numerical simulations. This two-stage CLC consists of two pressurized packed bed reactors connected in series, where the first bed contains an oxygen carrier material which is reactive at relatively low temperatures (450 °C) such as CuO/Cu, while the second bed contains an oxygen carrier which is resistant to relatively high temperatures (typically 1200 °C) such as NiO/Ni. In this work, this two-stage CLC concept has been experimentally demonstrated using CuO/Al2O3 and NiO/CaAl2O4 as bed materials in a high-pressure, high-temperature packed bed reactor. The influence of the operating conditions has been examined, and a validated reactor model has been used to scale up the process to industrial scale. The two-stage CLC concept is successfully demonstrated with a maximum temperature of 839 °C in the second bed. The operating pressure, the throughput during the reduction cycle, and the fuel concentrations have been found to result in small or negligible influences on the maximum temperature rise. This means that they do not affect the TS-CLC performance as long as the cycle time is adopted such that the heat produced in the first reactor bed is exactly transferred to the second bed. It has also been demonstrated that operation at higher pressures (to reach a higher overall process efficiency) does not affect the performance of the TS-CLC reactor. However, the fuel type (H2, syngas, CO, or CH4) strongly influences the temperature increase in the reactor, since it influences to what extent the oxygen carriers can be reduced. The experimental results could be well described by a one-dimensional packed bed reactor model provided that the extent of heat losses and the response time of the thermocouples are properly taken into account. The validated reactor model shows that the desired gas flow rate at 1200 °C can indeed be produced after some small changes in the operating conditions and the active weight content of the oxygen carriers. Therefore, TS-CLC can be regarded as a feasible technology for power production with inherent CO2 capture with high LHV efficiency.

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“…The use of PBR for CLC has been presented and described with a detailed particle model integrated into a standard dispersion reactor model using CH 4 as fuel (Noorman et al, 2011a,b). The model has been validated with experimental results in a lab scale reactor (Noorman et al, 2010(Noorman et al, , 2011c) also using syngas from coal gasification (Hamers et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Reactor design and operation strategies for a large-scale packed-bed CLC power plant with coal syngas

Spallina

Chiesa

Martelli³

et al. 2015

International Journal of Greenhouse Gas Control

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CLC in packed beds using syngas and CuO/Al2O3: Model description and experimental validation

Cited by 54 publications

References 24 publications

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

Experimental Demonstration of Two-Stage Packed Bed Chemical-Looping Combustion Using Syngas with CuO/Al₂O₃ and NiO/CaAl₂O₄ as Oxygen Carriers

Reactor design and operation strategies for a large-scale packed-bed CLC power plant with coal syngas

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CLC in packed beds using syngas and CuO/Al2O3: Model description and experimental validation

Cited by 54 publications

References 24 publications

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

CaCO3 calcination by the simultaneous reduction of CuO in a Ca/Cu chemical looping process

Experimental Demonstration of Two-Stage Packed Bed Chemical-Looping Combustion Using Syngas with CuO/Al2O3 and NiO/CaAl2O4 as Oxygen Carriers

Reactor design and operation strategies for a large-scale packed-bed CLC power plant with coal syngas

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Experimental Demonstration of Two-Stage Packed Bed Chemical-Looping Combustion Using Syngas with CuO/Al₂O₃ and NiO/CaAl₂O₄ as Oxygen Carriers