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Reduction of the flue gas recirculation rate in oxycoal processes by means of non-stoichiometric burner operation

Author

Listed:
  • Blume, Maximilian
  • Bohn, Jan-Peter
  • Goanta, Adrian
  • Spliethoff, Hartmut

Abstract

Non-stoichiometric burner operation in oxycoal processes has been proposed as a means to control flame temperature and heat exchange on admissible levels similar to air combustion when reducing the recirculation rate i.e. increasing the oxygen concentration in the oxidizer. Thus, the additional energetic and tangible expenditure of oxyfuel operation compared to conventional air firing can be lowered. Non-stoichiometic burner operation leads to gradual release of combustion enthalpy. On this way lower (adiabatic) flame temperatures are achievable compared to stoichiometric combustion. By combining two or more burners in over- and sub-stoichiometric operation global stoichiometries between λ = 1.10–1.15 and low oxygen concentrations at the combustion chamber outlet are adjustable.

Suggested Citation

  • Blume, Maximilian & Bohn, Jan-Peter & Goanta, Adrian & Spliethoff, Hartmut, 2012. "Reduction of the flue gas recirculation rate in oxycoal processes by means of non-stoichiometric burner operation," Energy, Elsevier, vol. 45(1), pages 117-124.
    • Handle: RePEc:eee:energy:v:45:y:2012:i:1:p:117-124
    DOI: 10.1016/j.energy.2012.02.077
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    Cited by:

    1. Pettinau, Alberto & Ferrara, Francesca & Amorino, Carlo, 2013. "Combustion vs. gasification for a demonstration CCS (carbon capture and storage) project in Italy: A techno-economic analysis," Energy, Elsevier, vol. 50(C), pages 160-169.
    2. Świątkowski, Bartosz & Marek, Ewa, 2015. "Optimisation of pulverized coal combustion in O2/CO2/H2O modified atmosphere – Experimental and numerical study," Energy, Elsevier, vol. 92(P1), pages 47-53.

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