Energy and economic analysis of a hydrogen and ammonia co-generation system based on double chemical looping

Pan, Xin; Ma, Jingjing; Hu, Xiude; Guo, Qingjie

doi:10.1016/j.cjche.2020.10.007

Cited by 11 publications

(4 citation statements)

References 43 publications

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“…The system based on the Haber-Bosch principle is typically combined with other chemical looping processes to produce ammonia. In our previous studies, a dual chemical looping system for hydrogen and ammonia co-production was proposed [92] . The process is shown in Figure 16A, where the chemical looping hydrogen production device is connected downstream of the chemical gasification device in series.…”

Section: Clas Based On Haber-boschmentioning

confidence: 99%

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A Comprehensive Review of Chemical Looping Ammonia Synthesis

Han,

Xue,

et al. 2024

Innov Discov

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Ammonia, being a vital chemical compound, has made substantial contributions to the progress of society. It addresses not only the issue of nitrogen fixation from the atmosphere but also helps alleviate the food crisis. Nevertheless, the conventional Haber-Bosch process for synthesizing ammonia is frequently associated with substantial greenhouse gas emissions and the consumption of fossil fuels. Consequently, in response to significant environmental challenges, the prospective trajectory for the synthetic ammonia sector involves the adoption of strategies such as carbon reduction, energy-efficient conversions, and the exploration of environmentally friendly and sustainable approaches to ammonia synthesis. Among the various methods for green ammonia synthesis, chemical looping ammonia synthesis (CLAS) technology is regarded as one of the most promising alternatives to conventional ammonia synthesis methods in the upcoming years. This can be attributed to the relatively mild operating conditions and the flexible and distributed characteristics of its processes. In this paper, the thermodynamic and kinetic properties of nitridation and ammoniation reactions were examined through the lens of CLAS. The design and regulation strategies of nitrogen carriers (NCs) are summarized based on various types of NCs. The process of CLAS was summarized in relation to various NCs. This paper serves as a foundational resource for the prospective advancement of the CLAS framework.

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Section: Clas Based On Haber-boschmentioning

confidence: 99%

“…Reproduced from Ref. [92] with permission from Elsevier. B: Design and Optimization of a Clean Ammonia Synthesis System Based on Biomass Gasification Coupled with a Ca−Cu Chemical Loop.…”

Section: Clas Based On Haber-boschmentioning

confidence: 99%

A Comprehensive Review of Chemical Looping Ammonia Synthesis

Han,

Xue,

et al. 2024

Innov Discov

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“…After this, the reduced samples then react with steam to replenish the lattice oxygen and produce hydrogen. for the chemical looping methane reforming reactions are shown as follows: 8 Reduction reaction:…”

Section: Introductionmentioning

confidence: 99%

“…Finally, the oxygen carriers are fully reoxidized by air and close the redox cycle. The equations for the chemical looping methane reforming reactions are shown as follows: 8 Reduction reaction:…”

Section: Introductionmentioning

confidence: 99%

Ni-Promoted Fe₂O₃/Al₂O₃ for Enhanced Hydrogen Production via Chemical Looping Methane Reforming

Yang

Qiu

Zhang³

et al. 2023

Energy Fuels

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Chemical looping methane steam reforming shows promise for hydrogen production due to in situ CO2 capture and inherent hydrogen production but is limited by the low reactivity of the oxygen carriers. In this work, we propose several Ni-promoted Fe2O3/Al2O3 to generate hydrogen via chemical looping methane reforming and investigated the origin for the promoted redox performance; 10 wt % NiO–Fe2O3/Al2O3 shows high CH4 conversion (96%), H2 yield (3.3 mmol/g), and low carbon deposition (0.093 mmol/g). DFT calculations demonstrate that metallic Ni can decrease the energy barriers (1.24 eV) for methane activation. Characterizations manifest that 10 wt % NiO–Fe2O3/Al2O3 can significantly increase the reduction depth of Fe2O3, thus providing more oxygen vacancies for hydrogen production. A further increase in Ni content would decrease the oxygen capacity, reducing the potential for hydrogen production. Therefore, the enhanced redox performance of 10 wt % NiO–Fe2O3/Al2O3 results from the ability of Ni to facilitate CH4 activation, improving the reduction of Fe2O3 without significantly improving carbon deposition. We anticipate that the synergy between Ni and Fe2O3 can lead to the development of highly active and stable oxygen carriers.

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Decarbonizing power and fuels production by chemical looping processes: Systematic review and future perspectives

Palone,

Cedola,

Borello

et al. 2024

Applied Thermal Engineering

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Energy and economic analysis of a hydrogen and ammonia co-generation system based on double chemical looping

Cited by 11 publications

References 43 publications

A Comprehensive Review of Chemical Looping Ammonia Synthesis

A Comprehensive Review of Chemical Looping Ammonia Synthesis

Ni-Promoted Fe₂O₃/Al₂O₃ for Enhanced Hydrogen Production via Chemical Looping Methane Reforming

Decarbonizing power and fuels production by chemical looping processes: Systematic review and future perspectives

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Energy and economic analysis of a hydrogen and ammonia co-generation system based on double chemical looping

Cited by 11 publications

References 43 publications

A Comprehensive Review of Chemical Looping Ammonia Synthesis

A Comprehensive Review of Chemical Looping Ammonia Synthesis

Ni-Promoted Fe2O3/Al2O3 for Enhanced Hydrogen Production via Chemical Looping Methane Reforming

Decarbonizing power and fuels production by chemical looping processes: Systematic review and future perspectives

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Ni-Promoted Fe₂O₃/Al₂O₃ for Enhanced Hydrogen Production via Chemical Looping Methane Reforming