Syngas production by chemical looping gasification using Fe supported on phosphogypsum compound oxygen carrier

Ma, Liping; Yi, Wei; Yang, Jing; Xiang, Huaping; Ma, Liping; Zhang, Wei; Wang, Lichun; Peng, Yiming; Liu, Hongpan

doi:10.1016/j.energy.2018.11.106

Cited by 36 publications

(5 citation statements)

References 51 publications

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“…When considering the presence of both the lines of the oxidation of H 2 to H 2 O and C to CO, it is possible to find a region where partial oxidation is thermodynamically preferred, ensuring a high selectivity for syngas production during chemical looping. While only the oxidation of Fe to FeO in Figure 8 lies between these lines, some oxidation reactions of mixed metal oxides can be found inside this area [140,141]. It should also be noted that this area becomes smaller when higher pressure is applied due to a shift in Gibbs free energy.…”

Section: Thermodynamic Limitationsmentioning

confidence: 89%

“…As the Gibbs free energy for the oxidation of this Cu/CuO pair is almost zero, it is even eligible for CLOU. Next to the original metal/metal oxide pairs, other materials can also be plotted when developing oxygen carrier materials [140,141]. Because of this, Ellingham diagrams are great tools when developing oxygen carrier materials to assess whether certain materials are suitable for CLC or even for CLR.…”

Section: Thermodynamic Limitationsmentioning

confidence: 99%

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Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

et al. 2020

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This review aims to give more understanding of the selection and development of oxygen carrier materials for chemical looping. Chemical looping, a rising star in chemical technologies, is capable of low CO2 emissions with applications in the production of energy and chemicals. A key issue in the further development of chemical looping processes and its introduction to the industry is the selection and further development of an appropriate oxygen carrier (OC) material. This solid oxygen carrier material supplies the stoichiometric oxygen needed for the various chemical processes. Its reactivity, cost, toxicity, thermal stability, attrition resistance, and chemical stability are critical selection criteria for developing suitable oxygen carrier materials. To develop oxygen carriers with optimal properties and long-term stability, one must consider the employed reactor configuration and the aim of the chemical looping process, as well as the thermodynamic properties of the active phases, their interaction with the used support material, long-term stability, internal ionic migration, and the advantages and limits of the employed synthesis methods. This review, therefore, aims to give more understanding into all aforementioned aspects to facilitate further research and development of chemical looping technology.

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Section: Thermodynamic Limitationsmentioning

confidence: 89%

Section: Thermodynamic Limitationsmentioning

confidence: 99%

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

et al. 2020

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“…Chuayboon et al [15] reported that ZnO can oxidize biomass, and biomass/ZnO ratios have an important impact on gasification performance. In addition, Yang et al [24] studied chemical looping gasification using Fe supported on phosphogypsum compound as an oxygen carrier, and reported that this material has high oxygen exchange capacity, high selective conversion ability of C to CO, excellent activity and recyclability. Furthermore, the effect of equivalence ratio on the CO selectivity of Fe/Ca-based oxygen carriers in biochar chemical looping gasification was investigated [25], and the CO selectivity of Fe 2 O 3 decreased markedly with increasing equivalence ratio.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Experimental Investigation of Solar-Driven Biomass Pyro-Gasification Using H2O, CO2, or ZnO Oxidants for Clean Syngas and Metallurgical Zn Production

Chuayboon

Abanades

2021

Processes

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The solar gasification of biomass represents a promising avenue in which both renewable solar and biomass energy can be utilized in a single process to produce synthesis gas. The type of oxidant plays a key role in solar-driven biomass gasification performance. In this study, solar gasification of beech wood biomass with different oxidants was thermodynamically and experimentally investigated in a 1.5 kWth continuously-fed consuming bed solar reactor at 1200 °C under atmospheric pressure. Gaseous (H2O and CO2) as well as solid (ZnO) oxidants in pellet and particle shapes were utilized for gasifying beech wood, and the results were compared with pyrolysis (no oxidant). As a result, thermodynamic predictions provided insights into chemical gasification reactions against oxidants, which can support experimental results. Compared to pyrolysis, using oxidants significantly promoted syngas yield and energy upgrade factor. The highest total syngas yield (63.8 mmol/gbiomass) was obtained from biomass gasification with H2O, followed by CO2, ZnO/biomass mixture (pellets and particles), and pyrolysis. An energy upgrade factor (U) exceeding one was achieved whatever the oxidants, with the maximum U value of 1.09 from biomass gasification with ZnO, thus highlighting successful solar energy storage into chemical products. ZnO/biomass pellets exhibited greater gas yield, particularly CO, thanks to enhanced solid–solid reaction. Solid product characterization revealed that ZnO can be reduced to high-purity Zn through solar gasification, indicating that solar-driven biomass gasification with ZnO is a promising innovative process for CO2-free sustainable co-production of metallic Zn and high-quality syngas.

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“…Nowadays, the utilization of fossil fuels has been considered as one of the biggest problems to the increasing emission of CO 2 . Chemical looping has emerged as a promising technology for coal utilization as it decreases the irreversible entropy production to increase the energy utilization efficiency. , It takes advantage of the redox behavior of oxygen carriers (OCs) between two individual reactors to realize initial CO 2 separation and NO x emission control without the enrollment of pure oxygen. − In situ gasification chemical looping combustion (CLC) is known as a typical strategy for coal utilization for complete oxidization between the fuel and the OC in the reducer. , Conversely, chemical looping gasification (CLG) − was proposed to achieve plenty of syngas (H 2 and CO) through partial oxidization, as is shown in Figure .…”

Section: Introductionmentioning

confidence: 99%

Characteristic Evaluation and Process Simulation of CuFe₂O₄ as Oxygen Carriers in Coal Chemical Looping Gasification

et al. 2021

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Chemical looping gasification (CLG) has been described as an innovative and low-cost gasification technology to convert carbonaceous fuels into synthesis gases. Oxygen carrier (OC) is the key to resolve the contradiction between rapid carbon conversion and appropriate partial oxidation of coal. At present, the solid fuel conversion in the CLG process is limited by an iron-based OC, and a copper-based carrier has difficulty in maintaining the reduction atmosphere. Hence, CuFe2O4 has been proposed as a high-performance OC because of its synergistic effect. The present study first conducted a characteristic evaluation on CuFe2O4, including the reducibility and oxygen release capacity. The results showed that the addition of copper made a great contribution to the reduction process, and the presence of ferrite better relieved the deep oxygen loss of CuFe2O4. The thermodynamic limitation and evolution behavior of CuFe2O4 in the reduction process were discussed for the simulation. An Aspen model of the CLG process with coal as the fuel and CuFe2O4 as the OC was then established and validated by the experimental data. By consideration of the high carbon conversion and high syngas productivity in the operation, an OC/fuel mass ratio of approximately 1.25–2.25 and a gasification temperature range of 800–900 °C were thought to be optimal in the coal CLG process.

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Syngas production by chemical looping gasification using Fe supported on phosphogypsum compound oxygen carrier

Cited by 36 publications

References 51 publications

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Thermodynamic and Experimental Investigation of Solar-Driven Biomass Pyro-Gasification Using H2O, CO2, or ZnO Oxidants for Clean Syngas and Metallurgical Zn Production

Characteristic Evaluation and Process Simulation of CuFe₂O₄ as Oxygen Carriers in Coal Chemical Looping Gasification

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Syngas production by chemical looping gasification using Fe supported on phosphogypsum compound oxygen carrier

Cited by 36 publications

References 51 publications

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review

Thermodynamic and Experimental Investigation of Solar-Driven Biomass Pyro-Gasification Using H2O, CO2, or ZnO Oxidants for Clean Syngas and Metallurgical Zn Production

Characteristic Evaluation and Process Simulation of CuFe2O4 as Oxygen Carriers in Coal Chemical Looping Gasification

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Characteristic Evaluation and Process Simulation of CuFe₂O₄ as Oxygen Carriers in Coal Chemical Looping Gasification