Carbon Dioxide Recycling By High Temperature Co-Electrolysis And Hydrocarbon Synthesis

  • Hartvigsen J
  • Elangovan S
  • Frost L
 et al. 
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Abstract

Carbon dioxide recovered from concentrated sources, such as metallurgical reduction furnaces, cement kilns and fossil power plants can provide a valuable feedstock for a synthetic fuels industry based on energy from nuclear, solar, wind and hydropower sources. High temperature co-electrolysis of CO
2 and steam to produce synthesis gas has been demonstrated using reversible solid oxide fuel cell technology. Where a source of high temperature process heat is available, such as from an advanced high temperature nuclear reactor or solar dish concentrator, the endothermic electrolysis reactions can utilize both thermal and electrical inputs in such a way that the conversion efficiency within the cell is 100%. Synthesis gas produced in a coelectrolysis cell has been further reacted over a catalyst to produce conventional hydrocarbon fuels. Widespread implementation of synfuel production from CO
2 will enable a much larger reliance on intermittent renewable energy than can be accommodated by conventional electric demand profiles.

Author-supplied keywords

  • Carbon dioxide
  • Climate change
  • Fischer-Tropsch synthesis
  • Greenhouse gas reduction
  • High temperature electrolysis

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Authors

  • Joseph Hartvigsen

  • S. Elangovan

  • Lyman Frost

  • Anthony Nickens

  • Carl Stoots

  • James O'Brien

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