Syngas and a separate nitrogen/argon stream via chemical looping reforming – A 140kW pilot plant study

Pröll, Tobias; Bolhàr-Nordenkampf, Johannes; Kolbitsch, Philipp; Hofbauer, Hermann

doi:10.1016/j.fuel.2009.09.033

Cited by 131 publications

(66 citation statements)

References 13 publications

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“…These materials were further tested in a 120 kW th unit at Vienna University of Technology to demonstrate the process at pilot scale and to determine the effect of the operating conditions on the process performance [42,167,192,194,195] Besides spray drying particles, Linderholm et al [140] at CHALMERS tested the suitability of Ni-based oxygen-carrier prepared by spin-flash during 160 h in a 10 kW th CLC system. The fuel conversion to CO 2 was as high as 99%.…”

Section: Ni-based Oxygen-carriersmentioning

confidence: 99%

“…The heat generated in the air-reactor must be high enough to fulfil the heat balance in the system without requirement of any external energy source for the process. The thermodynamics and the heat balance of the fueland air-reactors using Cu-and Ni-based oxygen-carriers were studied by Atmospheric continuous a-CLR process working with Ni-based oxygen-carriers has been demonstrated by Rydén et al [182,197,198] and by de Diego et al [170] in continuous units, and by Pröll et al [195] in a 140 kW th pilot plant. A summary of the oxygen-carriers used in these installations together with the operational experience is showed in Table 7.…”

Section: Auto-thermal Chemical-looping Reforming (A-clr)mentioning

confidence: 99%

“…The potential of the Chemical-Looping Reforming process (a-CLR) has been evaluated in the 140 kW th pilot plant at TUWIEN using a Ni-based oxygen-carrier [195]. Almost full CH 4 conversion was reached and the fuel-reactor exhaust gas was in thermodynamic equilibrium.…”

Section: Status Development Of Chemical-looping Technologiesmentioning

confidence: 99%

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Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,959

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: Ni-based Oxygen-carriersmentioning

confidence: 99%

Section: Auto-thermal Chemical-looping Reforming (A-clr)mentioning

confidence: 99%

See 1 more Smart Citation

Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,959

1,614

View full text Add to dashboard Cite

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“…In the ICB-CSIC-liq1 unit this was carried out by diluting this stream with N 2 . This method has important consequences from an industrial point of view because it allows an easy operation, an accurate oxygen flow control from the AR to the FR, and, in addition, pure N 2 can be obtained at the outlet of the AR [11,15]. In this case, all oxygen entering the AR is transferred to the FR (i.e.…”

Section: Control Of the Oxygen Used In The Systemmentioning

confidence: 99%

“…The CLR process has been demonstrated at atmospheric pressure in continuous units [12,13], at laboratory scale [14] and in a 140 kWth pilot plant [15]. In addition, the effect of pressure in a semi-continuous fluidized bed reactor has been also analysed [16].…”

mentioning

confidence: 99%

Syngas/H2 production from bioethanol in a continuous chemical-looping reforming prototype

Garcı́a-Labiano

García-Díez

Diego

et al. 2015

Fuel Processing Technology

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Abstract:Chemical-looping reforming (CLR) allows H 2 production without CO 2 emissions into the atmosphere. The use of a renewable fuel, bioethanol, in an auto-thermal CLR process has the advantage to produce H 2 with negative CO 2 emissions. This work presents the experimental results obtained in a continuously operating CLR unit (1 kW th ) using ethanol as fuel. Two NiO-based oxygen carriers were used during more than 50 hours of operation. The influence of variables such as temperature, water-to-fuel 2 and oxygen-to-fuel molar ratios was analysed. Full conversion of ethanol was accomplished and carbon formation was easily avoided. A syngas composed by ≈61 vol.% H 2 , ≈32 vol.% CO, ≈5 vol.% CO 2 and ≈2 vol.% CH 4 was reached at auto-thermal conditions for both materials. Gas composition was closed to the given by the thermodynamic equilibrium. These results demonstrate the technical viability of H 2 /syngas production by using bioethanol in an auto-thermal CLR process.

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Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

et al. 2014

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Efficient and environmentally friendly conversion of methane into syngas is a topic of practical relevance for the production of hydrogen, chemicals, and synthetic fuels. At present, methane‐derived syngas is produced primarily through the steam methane reforming processes. The efficiencies of such processes are limited owing to the endothermic steam methane reforming reaction and the high steam to methane ratio required by the reforming catalysts. Chemical looping reforming represents an alternative approach for methane conversion. In the chemical looping reforming scheme, a solid oxygen carrier or “redox catalyst” is used to partially oxidize methane to syngas. The reduced redox catalyst is then regenerated with air. The cyclic redox operation reduces the steam usage while simplifying the heat integration scheme. Herein, a new Fe2O3@LaxSr1−xFeO3 (LSF) core–shell redox catalyst is synthesized and investigated. Compared with several other commonly investigated iron‐based redox catalysts, the newly developed core–shell redox catalyst is significantly more active and selective for syngas production from methane. It is also more resistant toward carbon formation and maintains high activity over cyclic redox operations.

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Syngas and a separate nitrogen/argon stream via chemical looping reforming – A 140kW pilot plant study

Cited by 131 publications

References 13 publications

Progress in Chemical-Looping Combustion and Reforming technologies

Progress in Chemical-Looping Combustion and Reforming technologies

Syngas/H2 production from bioethanol in a continuous chemical-looping reforming prototype

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

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Syngas and a separate nitrogen/argon stream via chemical looping reforming – A 140kW pilot plant study

Cited by 131 publications

References 13 publications

Progress in Chemical-Looping Combustion and Reforming technologies

Progress in Chemical-Looping Combustion and Reforming technologies

Syngas/H2 production from bioethanol in a continuous chemical-looping reforming prototype

Fe2O3@LaxSr1−xFeO3 Core–Shell Redox Catalyst for Methane Partial Oxidation

Contact Info

Product

Resources

About

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation