A comparative process study of chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) for solid fuels

Sahir, Asad H.; Dansie, J.K.; Cadore, Arthur L.; Lighty, JoAnn S.

doi:10.1016/j.ijggc.2014.01.008

Cited by 33 publications

(37 citation statements)

References 46 publications

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“…We used a flowsheet as per the reported oxygen carriers (OC) of Sahir et al., which was 60 % Fe 2 O 3 −Al 2 O 3 . This was necessitated for a comparable prediction of energy analysis for both CLC and CLOU.…”

Section: Resultsmentioning

confidence: 99%

“…Overall the results are in agreement with respect to OC composition, as used by Sahir et al . For coal, the difference in energy output between CLC and CLOU was found to be 84 kW th (513 kW th in CLOU−429 kW th in CLC); in this work, for biomass it was 43 Watts (201 Watts in CLOU−158 Watts in CLC).…”

Section: Resultsmentioning

confidence: 99%

“…In a recent development, a process level simulation in CLC using Al 2 O 3 supported Fe 2 O 3 oxygen carrier and CLOU with CuO supported on ZrO 2 based oxygen carrier particles was developed by Sahir et al . for sub‐bituminous coal.…”

Section: Introductionmentioning

confidence: 99%

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Process Simulation and Energy Analysis of Chemical Looping Combustion and Chemical Looping with Oxygen Uncoupling for Sawdust Biomass

Kevat

Banerjee

2018

Energy Tech

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The integral part of chemical looping combustion (CLC) and chemical looping with oxygen uncoupling (CLOU) for solid fuels such as biomass consists of an interconnected fluidized air and fuel reactor. The heat recovery/loss in both reactors needs to be analyzed to commercialize these novel fuels based on CLC and CLOU processes. Here, complete process level modelling of CLC and CLOU process is attempted and explored using the ASPEN simulator with sawdust as the biomass. Initially, a benchmarking study of CLC is performed to validate the CO2, CO, and CH4 concentration in the fuel reactor and O2 and CO2 concentrations in the air reactor using 81.1 % Fe2O3 (oxygen carrier) as the reactive component. Thereafter energy analysis is carried out with sawdust biomass using the catalyst combination of 60 % Fe2O3−Al2O3 and 40 % CuO−ZrO2 for CLC and CLOU, respectively. In biomass, for CLOU a 51 % conversion is realized in the fuel reactor and 48 % is realized in the air reactor. The energy analysis gave a difference in energy output between CLC and CLOU of 43 Watts i.e., 201 Watts in CLOU and 158 Watts in CLC.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Process Simulation and Energy Analysis of Chemical Looping Combustion and Chemical Looping with Oxygen Uncoupling for Sawdust Biomass

Kevat

Banerjee

2018

Energy Tech

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“…This assumption can be justified by the very high oxidation rates measured for copper-based oxygen carriers [25,39]. With respect to the overall heat balance in the system, an energy differential represented by a temperature difference of 15°C between the reactors should be within a practical range of operation [15,24]. Thus, the solids enter the fuel reactor at X OC ¼ 1 and T ¼ 945°C.…”

Section: Simulation Casementioning

confidence: 99%

“…Zhou et al [14] and Sahir et al [15] have constructed Aspen Plus process models to generate material and energy balances for a CLOU reactor system. The models use a simplified reaction scheme and the chemical kinetics are not modelled in detail.…”

Section: Introductionmentioning

confidence: 99%