On the development of novel reactor concepts for chemical looping combustion

Dahl, Ivar M.; Bakken, Egil; Larring, Yngve; Spjelkavik, Aud I.; Håkonsen, Silje Fosse; Blom, Richard

doi:10.1016/j.egypro.2009.01.198

Cited by 56 publications

(61 citation statements)

References 5 publications

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“…Finally, a rotating reactor was proposed by Dahl et al [120,121]. In this reactor, the oxygen-carrier material is rotated between different gas streams flowing radially outwards through the metal oxide bed.…”

Section: Process Fundamentalsmentioning

confidence: 99%

Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,997

1,614

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This work is a comprehensive review of the Chemical-Looping Combustion (CLC) and Chemical-Looping Reforming (CLR) processes reporting the main advances in these technologies up to 2010. These processes are based on the transfer of the oxygen from air to the fuel by means of a solid oxygen-carrier avoiding direct contact between fuel and air for different final purposes. CLC has arisen during last years as a very promising combustion technology for power plants and industrial applications with inherent CO 2 capture which avoids the energetic penalty present in other competing technologies.CLR uses the chemical looping cycles for H 2 production with additional advantages if CO 2 capture is also considered.The review compiles the main milestones reached during last years in the development of these technologies regarding the use of gaseous or solid fuels, the oxygen-carrier development, the continuous operation experience, and modelling at several scales. Up to 2010, more than 700 different materials based on Ni, Cu, Fe, Mn, Co, as well as other mixed oxides and low cost materials, have been compiled. Especial emphasis has been done in those oxygen-carriers tested under continuous operation in Chemical-Looping 2 prototypes. The total time of operational experience (≈ 3500 h) in different CLC units in the size range 0.3-120 kW th , has allowed to demonstrate the technology and to gain in maturity. To help in the design, optimization, and scale-up of the CLC process, modelling work is also reviewed. Different levels of modelling have been accomplished, including fundamentals of the gas-solid reactions in the oxygen-carriers, modelling of the air-and fuel-reactors, and integration of the CLC systems in the power plant. Considering the great advances reached up to date in a very short period of time, it can be said that CLC and CLR are very promising technologies within the framework of the CO 2 capture options.

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Section: Process Fundamentalsmentioning

confidence: 99%

Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,997

1,614

View full text Add to dashboard Cite

show abstract

“…Alternative designs like the packed bed reactor proposed by Noorman [28] or the thermally balanced version of the SCOT process [30], as well as the moving bed reactor [31] are possible options. However, these would require a careful selection of the oxygen carriers, a high inert bed material loading to increase thermal capacity and minimize temperature swings, and fast feed cycling.…”

Section: Resultsmentioning

confidence: 99%

“…This setup adds flexibility that enables the reactor to utilize a wider range of oxygen carriers but faces the practical challenge of incorporating an internal heat engine. To overcome the technical challenges related to high temperature gas switching inherent in the fixed bed designs, Dahl & Hakonsen et al proposed the rotating packed-bed reactor [31,32]. This reactor consists of a doughnut shaped, fixed oxygen carrier bed rotated between four fixed gas feed sectors on the top face -air sector, fuel sector and two purging sectors to prevent air/fuel mixing.…”

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confidence: 99%

Analysis of thermally coupled chemical looping combustion-based power plants with carbon capture

Iloeje

Zhao

Ghoniem

2015

International Journal of Greenhouse Gas Control

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“…After that, the reduced OC is transferred to the AR, and is oxidized into its original state by air (Reaction 2). The outlet gases from the FR are mainly CO 2 and H 2 O, which can be easily separated by condensing and drying to obtain a high concentration of CO 2 [3][4][5]. Although Reaction 1 is often endothermic, Reaction 2 is exothermic and therefore the oxidized OC can also act as a heat carrier to transfer the energy needed to maintain the reduction reaction that has happened in the FR.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Study of the Interactions between Fe2O3/Al2O3 and CO

Liang

Chen

2017

Energies

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Abstract:The behavior of Fe 2 O 3 /Al 2 O 3 particles as oxygen carriers (OCs) for CO chemical looping combustion (CLC) under different reaction temperatures (700 • C, 800 • C, 900 • C, and 1000 • C) were tested in a lab-scale fluidized bed and a thermogravimetric analysis (TGA) unit. The results show that the oxygen carrier presents the highest reactivity at 800 • C, even after 30 cycles of redox reaction in a fluidized bed, while more obvious carbon deposition occurred for the case at 700 • C, and agglomeration for the case at 1000 • C. Moreover, the detailed behavior of the prepared Fe 2 O 3 /Al 2 O 3 particle was detected in the TGA apparatus at different reaction temperatures. Furthermore, temperature-programming TGA experiments were performed to investigate the influence of different CO concentrations and CO/CO 2 concentrations on the reaction between CO and OC during the chemical looping combustion processes. Based on these experimental behaviors of the prepared Fe 2 O 3 /Al 2 O 3 during the CLC of CO, the detailed models and electronic properties of the pure and reduced Fe 2 O 3 /Al 2 O 3 supported the slabs, CO adsorption, and oxidation, and the decomposition reactions on these surfaces were revealed using density functional theory (DFT) calculations which went deep into the nature of the synergetic effect of the support of Al 2 O 3 on the activity of Fe 2 O 3 for the CLC of CO.

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On the development of novel reactor concepts for chemical looping combustion

Cited by 56 publications

References 5 publications

Progress in Chemical-Looping Combustion and Reforming technologies

Progress in Chemical-Looping Combustion and Reforming technologies

Analysis of thermally coupled chemical looping combustion-based power plants with carbon capture

Experimental and Theoretical Study of the Interactions between Fe2O3/Al2O3 and CO

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