Modeling and Simulation of Calcium Oxide Enhanced H&lt;SUB&gt;2&lt;/SUB&gt; Production from Steam Gasification of Biomass

Li, Bin; Chen, Hanping; Yang, Haiping; Wang, Xianhua; Zhang, Shihong; Dai, Zhenghua

doi:10.1166/jbmb.2011.1153

Cited by 12 publications

(2 citation statements)

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“…Most models for integrated biomass gasification and CO 2 capture are based on thermodynamic equilibrium, with few models based on reaction kinetics. The upper limit for the lime-enhanced H 2 production process has been frequently studied via thermodynamic analysis. ,, Equilibrium models developed in Aspen Plus have been used to find the desirable operating conditions for sorbent-enhanced biomass gasification. − Pröll et al developed a process simulation model for gasification of biomass in a dual fluidized bed gasifier, with and without lime-based CO 2 capture in IPSEpro software. This study shows that CO 2 capture enhances the hydrogen content of the product gas and increases the energy efficiency of the process.…”

Section: Introductionmentioning

confidence: 99%

“…The upper limit for the lime-enhanced H 2 production process has been frequently studied via thermodynamic analysis. 8,18,19 Equilibrium models developed in Aspen Plus have been used to find the desirable operating conditions for sorbent-enhanced biomass gasification. 20−23 hydrogen content of the product gas and increases the energy efficiency of the process.…”

Section: Introductionmentioning

confidence: 99%

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Kinetic Modeling of Lime-Enhanced Biomass Steam Gasification in a Dual Fluidized Bed Reactor

Hejazi

Grace

Mahecha‐Botero

2019

Ind. Eng. Chem. Res.

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This paper develops a simple yet practical steady-state kinetic reactor model for lime-enhanced biomass steam gasification in a dual fluidized bed reactor, one of the most promising technologies for the sustainable production of hydrogen. The focus is on kinetic modeling of the bubbling fluidized bed gasifier, accounting for in situ sorbent carbonation, while assuming complete char combustion and complete sorbent calcination in the circulating fluidized bed riser. This kinetic model assumes perfect mixing of solids and plug flow of gas phase coupled with a two-step reaction kinetic mechanism for biomass pyrolysis, with phenol as a model tar compound and a reaction network for tar thermal cracking and reforming, major homogeneous and heterogeneous gasification reactions, and a firstorder kinetic model for the carbonation of sorbent particles suitable for steady state Ca-looping operation. Predictions of the product gas distribution are in good agreement with literature experimental data on the effect of Ca-looping rate, gasifier temperature, and steam-to-biomass ratio for absorption enhanced reforming (AER) of biomass in both 20 kW th and 200 kW th dual fluidized bed systems operating at steady-state. This predictive model is useful for optimizing design and operation of dual fluidized bed biomass gasifiers with lime-based CO 2 capture.

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