Modelling of SOEC-FT reactor: Pressure effects on methanation process

Chen, Bin; Xu, Haoran; Ni, Meng

doi:10.1016/j.apenergy.2016.10.095

Cited by 69 publications

(30 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on numerical simulation, it was found that the CH 4 conversion could be enhanced by 2.5 times by increasing the pressure to 3 bar. 12,13 It is expected that the SOEC-FT technology can be a promising option for valuable chemical production using the excess wind or solar power. 4.…”

Section: Oxygen Ion Conducting Electrolyte Versus Protonmentioning

confidence: 99%

“…At an SOEC temperature of 800°C, the CH 4 yield was significantly improved to 11.84%. Based on numerical simulation, it was found that the CH 4 conversion could be enhanced by 2.5 times by increasing the pressure to 3 bar . It is expected that the SOEC‐FT technology can be a promising option for valuable chemical production using the excess wind or solar power. The oxygen ion conducting electrolyte can be used for oxygen separation to obtain pure oxygen which has various applications .…”

mentioning

confidence: 99%

See 1 more Smart Citation

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

2018

Int J Energy Res

Self Cite

View full text Add to dashboard Cite

Section: Oxygen Ion Conducting Electrolyte Versus Protonmentioning

confidence: 99%

mentioning

confidence: 99%

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

2018

Int J Energy Res

Self Cite

View full text Add to dashboard Cite

“…Thermodynamic analysis reveals that pressurization is also beneficial for improving the efficiency of P2M using SOECs . However, direct P2M using a pressurized tubular SOEC was only studied using numerical simulation . In this study, we built a pressurized tubular SOEC test setup to experimentally demonstrate direct P2M in pressurized operation.…”

Section: Introductionmentioning

confidence: 99%

Pressurized tubular solid oxide H₂O/CO₂ coelectrolysis cell for direct power‐to‐methane

Luo

Chen

et al. 2020

AIChE Journal

View full text Add to dashboard Cite

To improve the energy‐to‐CH4 efficiency and enhance renewable power utilization, we investigate direct Power‐to‐Methane at low inlet H2 content (25 vol%) in solid oxide electrolysis cell (SOEC). The synergy of the pressurized operation and the electricity input effectively enhances CH4 yield by one‐order of magnitude from 2.8% to 28.7% and the CO2‐to‐CH4 ratio from 4.4% to 39.5% in the H2‐reduced case, where the ratio of H2 consumption to total energy consumption decreases to 41% and the energy‐to‐CH4 efficiency increases to 53%. We develop a multiphysics tubular SOEC model to understand the intrinsic coupling between electrochemistry and heterogeneous catalytic chemistry. From the perspective of performance enhancement, geometry optimization, and thermal design, inhibiting CH4 production in the inlet gas‐controlled zone and promoting CH4 production synergistically in both the electrochemistry‐controlled zone and the temperature‐controlled zone is the key to improve the energy‐to‐CH4 efficiency.

show abstract

“…This observation indicates that the electrochemical reaction and water‐gas shift (WGS) reaction occur simultaneously in the fuel electrode with syngas . Various schemes of syngas supply (including water gas, ammonia and urea, biomass, and coal gas) are also investigated to evaluate the syngas conversion in SOFCs and SOECs . Most work is focused on the system level without considering multiphysics transport processes coupled with chemical or electrochemical reactions at the cell or electrode level.…”

Section: Introductionmentioning

confidence: 99%

CFD modeling and performance comparison of solid oxide fuel cell and electrolysis cell fueled with syngas

et al. 2018

View full text Add to dashboard Cite

Summary Reversible solid oxide fuel cells (rSOFCs) may be applied to store and generate electrical energy in a reversible mode. This technique is promising to balance the conflict between intermittent power supply and demand in a sustainable way. One of the limitations of the development of rSOFCs is the high cost of storage and usage of pure H2, which may be solved by employing syngas as the fuel. The performance of rSOFCs depends on the development of bifunctional materials, cell design, and operation optimization, which are often investigated and predicted by the cost‐effective approach of mathematical modeling. However, the modeling of dual‐mode rSOFCs involving co‐redox reactions with syngas is not well developed. In this study, a two‐dimensional (2D) single‐channel model of an rSOFC is developed. The novelty of this model is that the multiphysics transport processes are fully coupled and solved with the reversible water‐gas shift reaction with syngas and the electrochemical reactions. The effects of the operating conditions and design parameters (eg, electrode thickness) are considered, with the aim of providing guidelines to optimize the design and operation of reversible cells. It is concluded that the thickness of the electrode has a larger impact on the water‐gas shift reaction than on the electrochemical reaction in both the gas diffusion and reaction regions. The C/H element ratio of syngas has a negative correlation with power output, but the distributions of current and gas species may be improved in both modes. A higher operating temperature improves the performance in both modes but has a more substantial effect in the electrolysis mode. The specific design and operating schemes favored in different modes should be balanced in the reversible mode.

show abstract

Modelling of SOEC-FT reactor: Pressure effects on methanation process

Cited by 69 publications

References 38 publications

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

Pressurized tubular solid oxide H₂O/CO₂ coelectrolysis cell for direct power‐to‐methane

CFD modeling and performance comparison of solid oxide fuel cell and electrolysis cell fueled with syngas

Contact Info

Product

Resources

About

Modelling of SOEC-FT reactor: Pressure effects on methanation process

Cited by 69 publications

References 38 publications

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

New developments and challenges of solid oxide fuel cell (SOFC)-based technologies

Pressurized tubular solid oxide H2O/CO2 coelectrolysis cell for direct power‐to‐methane

CFD modeling and performance comparison of solid oxide fuel cell and electrolysis cell fueled with syngas

Contact Info

Product

Resources

About

Pressurized tubular solid oxide H₂O/CO₂ coelectrolysis cell for direct power‐to‐methane