Characteristics of biomass gasification using chemical looping with iron ore as an oxygen carrier

Huang, Zhen; He, Fang; Feng, Yipeng; Liu, Rundong; Zheng, Anqing; Chang, Sheng; Zhao, Zengli; Li, Haibin

doi:10.1016/j.ijhydene.2013.09.022

Cited by 75 publications

(25 citation statements)

References 28 publications

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“…The optimum p-values (0.40 and 0.43) signify that the degradation process is partially controlled by the random nucleation mechanism, which randomly promotes the generation of activation centers. It is highly likely that the presence of oxygen carriers (gases and inorganic salts containing heavy metals) could initiate partial gasification (Huang et al, 2013) and catalyze T. ornata pyrolysis. This would increase the Fir sawdust Cu 1) Increase in bio-oil yields 2) Decreased in the oxygen contents in bio-oil 3) Significant increase in HHV 4) Cu-FSD derived bio-oil have higher HHV of 13.42-14.79 MJ kg −1 as compared to HHV of FSD which range between 10.77 and 12.32 MJ kg −1 5) Increase in biochar yields 6) Lower gas yields…”

Section: Combined Kineticsmentioning

confidence: 99%

Thermogravimetric Characteristics and Non-isothermal Kinetics of Macro-Algae With an Emphasis on the Possible Partial Gasification at Higher Temperatures

Ali

Bahadar

2019

Front. Energy Res.

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Pyrolysis of Turbinaria ornata was realized in a thermogravimetric analyzer. The process was crudely classified into primary and secondary reaction zones. In the primary reaction zone, the thermal decompositions of the low-thermal stable components produced volatiles and biochar. The solid products obtained from the primary decomposition reactions contained inorganics with heavy metals. At mild-to-high temperatures, the catalytic effects accompanied gasification using oxygen, which was partially supplied by the oxygen carriers present in the solids and evolved gases. In order to study the pyrolytic conversion, combined, and multiple reaction schemes were employed. While the model-free methods helped to provide the accurate activation energies and the initial value of the pre-exponential factor, the non-linear regression optimized the chosen model parameters. In this study, a simple order-based model was compared with the versatile Šesták-Berggren (SB) model considering combined and multiple reactions. The application of a multiple reaction scheme to the primary and secondary reaction zones concluded that a simple order-based model suffices for the kinetic analysis. The secondary decomposition was shown to start with a high activation energy, which decreased appreciably when the conversion proceeded toward completion.

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Section: Combined Kineticsmentioning

confidence: 99%

Thermogravimetric Characteristics and Non-isothermal Kinetics of Macro-Algae With an Emphasis on the Possible Partial Gasification at Higher Temperatures

Ali

Bahadar

2019

Front. Energy Res.

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“…ALSTOM have developed the CLG process considering CaSO 4 as oxygen carrier (Andrus, Chiu, Thibeault, & Brautsch, 2009). The use of iron ore was also analyzed as oxygen carrier, and an optimum O/C ratio of 1 was determined (Guo, Cheng, Liu, Jia, & Ryu, 2014) when coal was used as fuel, but it was lower than 0.1 for biomass gasification (Huang et al, 2013), likely because its higher carbon content in volatile matter compared with coal. Thus, the flow of oxygen transferred to the flow cannot be controlled by changing the air flow fed, but it must be fitted by controlling the solids residence time in the fuel reactor.…”

Section: Chemical Looping Gasificationmentioning

confidence: 99%

Chemical looping for hydrogen production

Abad¹

2015

Calcium and Chemical Looping Technology for Power Generation and Carbon Dioxide (CO2) Capture

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“…Moreover, the CLG of biomass process using natural hematite as oxygen carrier was also investigated in a fluidized bed reactor. Results showed that gas yield and carbon conversion increased by 11.02 and 7.47%, respectively, and tar content lowered by 51.53% compared to steam biomass gasification [10]. In our previous study, the oxide of Mn 2 O 3 , which has the capability of releasing oxygen, was used as oxygen carrier for CLG technology.…”

Section: Introductionmentioning

confidence: 95%

“…And then the reduced oxygen carrier is oxidized by air to regenerate [8]. Results showed that gas yield and carbon conversion increased by 11.02 and 7.47%, respectively, and tar content lowered by 51.53% compared to steam biomass gasification [10]. The CLG schematic of biomass is illustrated in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic modeling of the combined CLG–CLHG system for syngas and hydrogen generation

Wang

Qin

et al. 2017

Env Prog and Sustain Energy

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The combined CLG and CLHG is a novel technology for the co‐generation of syngas and H2‐riched gas. In CLG process, the reduction of oxygen carrier with biomass can produce syngas. In CLHG process, the oxidation of oxygen carrier with steam can produce H2‐riched gas. In this study, the Ce‐based oxygen carrier was selected as the candidate material based on the Gibbs free energy changes (ΔG) of the splitting water reactions. The redox mechanism of the Ce‐based oxygen carrier was discussed and thermodynamic analysis of syngas and hydrogen generation was performed by Gibbs free energy minimization method. The optimal O/C in the GR was determined as 0.6–0.8 and the total dry concentration of CO and H2 was higher than 95.0% under 850–1000°C. The optimal S/C in the SR was determined as 2–3 and the H2 fraction was higher than 70.0% under 850–1000°C. In the AR, all of the Ce oxides can be regenerated to CeO2 in the air flow of 0.5 kmol at 700°C. After one CLG–CLHG cycle, there was no carbon deposition on the surface of oxygen carrier. The redox mechanism of the Ce‐based oxygen carrier was defined as: CeO2↔CeO1.83↔CeO1.72↔Ce2O3. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1132–1139, 2018

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Characteristics of biomass gasification using chemical looping with iron ore as an oxygen carrier

Cited by 75 publications

References 28 publications

Thermogravimetric Characteristics and Non-isothermal Kinetics of Macro-Algae With an Emphasis on the Possible Partial Gasification at Higher Temperatures

Thermogravimetric Characteristics and Non-isothermal Kinetics of Macro-Algae With an Emphasis on the Possible Partial Gasification at Higher Temperatures

Chemical looping for hydrogen production

Thermodynamic modeling of the combined CLG–CLHG system for syngas and hydrogen generation

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