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Comparative analysis of energy requirements of CO2 removal from metallurgical fuel gases

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  • Lampert, Krzysztof
  • Ziebik, Andrzej

Abstract

The paper presents preliminary results of the analysis concerning a CO2 removal process, applied to metallurgical fuel gases: blast-furnace gas and Corex gas. The CO2 removal is realised by the physical absorption process with the Selexol solvent as the absorbing liquid. The analysis is focused on the energy consumption in the case of such installations, when blast-furnace gas or Corex gas are supposed to be treated. The CO2 removal from metallurgical gases can be attractive from both technological and environmental points of view. Decreased CO2 content in the gases and increased lower heating value (LHV) results in better conditions for its utilisation e.g. in a gas turbine-based combined heat and power (CHP) plant or direct utilisation within the process, e.g. as an auxiliary fuel or reducing gas in a blast furnace. As the composition, flow rate and LHV of the raw blast furnace and Corex gases differ strongly, the physical absorption installation has different requirements and operation parameters in the two cases. The optimisation leads to minimal energy consumption with the assumed CO2 removal efficiency. The results indicate which technology of pig-iron production has greater potential in the field of mitigation of greenhouse gas emissions, with respect to the technological possibilities of utilisation of the treated fuel gases.

Suggested Citation

  • Lampert, Krzysztof & Ziebik, Andrzej, 2007. "Comparative analysis of energy requirements of CO2 removal from metallurgical fuel gases," Energy, Elsevier, vol. 32(4), pages 521-527.
    • Handle: RePEc:eee:energy:v:32:y:2007:i:4:p:521-527
    DOI: 10.1016/j.energy.2006.08.003
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    Citations

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    Cited by:

    1. Lampert, Krzysztof & Ziebik, Andrzej & Stanek, Wojciech, 2010. "Thermoeconomical analysis of CO2 removal from the Corex export gas and its integration with the blast-furnace assembly and metallurgical combined heat and power (CHP) plant," Energy, Elsevier, vol. 35(2), pages 1188-1195.
    2. Suopajärvi, Hannu & Pongrácz, Eva & Fabritius, Timo, 2013. "The potential of using biomass-based reducing agents in the blast furnace: A review of thermochemical conversion technologies and assessments related to sustainability," Renewable and Sustainable Energy Reviews, Elsevier, vol. 25(C), pages 511-528.
    3. Li, Yuanyuan & Zhang, Na & Cai, Ruixian, 2013. "Low CO2-emissions hybrid solar combined-cycle power system with methane membrane reforming," Energy, Elsevier, vol. 58(C), pages 36-44.
    4. Li, Sheng & Jin, Hongguang & Gao, Lin, 2013. "Cogeneration of substitute natural gas and power from coal by moderate recycle of the chemical unconverted gas," Energy, Elsevier, vol. 55(C), pages 658-667.
    5. Chen, Wei-Hsin & Chen, Shu-Mi & Hung, Chen-I, 2013. "Carbon dioxide capture by single droplet using Selexol, Rectisol and water as absorbents: A theoretical approach," Applied Energy, Elsevier, vol. 111(C), pages 731-741.
    6. Vitasari, Caecilia R. & Jurascik, Martin & Ptasinski, Krzysztof J., 2011. "Exergy analysis of biomass-to-synthetic natural gas (SNG) process via indirect gasification of various biomass feedstock," Energy, Elsevier, vol. 36(6), pages 3825-3837.
    7. Juraščík, Martin & Sues, Anna & Ptasinski, Krzysztof J., 2010. "Exergy analysis of synthetic natural gas production method from biomass," Energy, Elsevier, vol. 35(2), pages 880-888.

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