Biomass direct chemical looping process: Process simulation

Biomass is a clean and renewable energy source. The efficiency for biomass conversion using conventional fuel conversion techniques, however, is constrained by the relatively low energy density and high moisture content of biomass. This study presents the biomass direct chemical looping (BDCL) proce...

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Published in:Fuel (Guildford) 2010-12, Vol.89 (12), p.3773-3784
Main Authors: Li, Fanxing, Zeng, Liang, Fan, Liang-Shih
Format: Article
Language:English
Subjects:
Applied sciences
Biomass
Chemical looping
Computer simulation
Conversion
Density
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
Moving bed reactor modeling
Multistage
Natural energy
Optimization
Process simulation
Reactors
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cited_by cdi_FETCH-LOGICAL-c498t-acc6a88f139c5540972e3964d19191611f55f851293db7317fddd7271dab0de83
cites cdi_FETCH-LOGICAL-c498t-acc6a88f139c5540972e3964d19191611f55f851293db7317fddd7271dab0de83
container_end_page 3784
container_issue 12
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container_title Fuel (Guildford)
container_volume 89
creator Li, Fanxing
Zeng, Liang
Fan, Liang-Shih
description Biomass is a clean and renewable energy source. The efficiency for biomass conversion using conventional fuel conversion techniques, however, is constrained by the relatively low energy density and high moisture content of biomass. This study presents the biomass direct chemical looping (BDCL) process, an alternative process, which has the potential to thermochemically convert biomass to hydrogen and/or electricity with high efficiency. Process simulation and analysis are conducted to illustrate the individual reactor performance and the overall mass and energy management scheme of the BDCL process. A multistage model is developed based on ASPEN Plus® to account for the performance of the moving bed reactors considering the reaction equilibriums. The optimum operating conditions for the reactors are also determined. Process simulation utilizing ASPEN Plus® is then performed based on the reactor performance data obtained from the multistage model. The simulation results indicate that the BDCL process is significantly more efficient than conventional biomass conversion processes. Moreover, concentrated CO 2, produced from the BDCL process is readily sequesterable, making the process carbon negative. Several BDCL configurations are investigated for process optimization purposes. The fates of contaminants are also examined.
doi_str_mv 10.1016/j.fuel.2010.07.018
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The efficiency for biomass conversion using conventional fuel conversion techniques, however, is constrained by the relatively low energy density and high moisture content of biomass. This study presents the biomass direct chemical looping (BDCL) process, an alternative process, which has the potential to thermochemically convert biomass to hydrogen and/or electricity with high efficiency. Process simulation and analysis are conducted to illustrate the individual reactor performance and the overall mass and energy management scheme of the BDCL process. A multistage model is developed based on ASPEN Plus® to account for the performance of the moving bed reactors considering the reaction equilibriums. The optimum operating conditions for the reactors are also determined. Process simulation utilizing ASPEN Plus® is then performed based on the reactor performance data obtained from the multistage model. 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subjects Applied sciences
Biomass
Chemical looping
Computer simulation
Conversion
Density
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
Moving bed reactor modeling
Multistage
Natural energy
Optimization
Process simulation
Reactors
title Biomass direct chemical looping process: Process simulation
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