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Optimal Oven Heating of Coke Cake. 2. Selection of the Inert Gas

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Abstract

The formation of the combustion flame in the heating channels of coke ovens is analyzed. The need for redesign of the components so as to permit recirculation of the combustion products by thermal ejection is established. That will result in elongation of the flame. In addition, the organization of forced recirculation by the supply of combustion products or inert gas to the heating channels with ascending flux is proposed. In this approach, it is possible to use water vapor, pure nitrogen, or blast-furnace gas from a steel plant or coke plant. The analysis yields the conclusion that these measures will ensure more uniform heating over the height of the cake in existing coke batteries, slow defect formation in the channel lining, and decrease atmospheric emissions.

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Notes

  1. The heat of combustion of 1 kmol of methane is \({{Q}_{{{\text{C}}{{{\text{H}}}_{4}}}}}\) = (1 mol) × (8.907 × 105 kJ/kmol) = 8.907 × 105 kJ. The heat of combustion of 4 kmol of hydrogen is \({{Q}_{{{{{\text{H}}}_{2}}}}}\) = (4 kmol) × (2.859 × 105 kJ/kmol) = 11.436 × 105 kJ. If 1 kmol of methane is replaced by 4 kmol of hydrogen, we calculate that \({{Q}_{{{{{\text{H}}}_{2}}}}}\) – \({{Q}_{{{\text{C}}{{{\text{H}}}_{4}}}}}\) = 2.529 × 105 kJ. As we see in Fig. 1b, much of this heat is consumed by Eq. (3).

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Authors and Affiliations

  1. OAO Gubakhinskii Koks, Gubakha, Russia

    D. G. Zublev

  2. Ukrainian State University of Chemical Technology, Dnepropetrovsk, Ukraine

    V. D. Barsky & A. V. Kravchenko

Authors
  1. D. G. Zublev
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  2. V. D. Barsky
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  3. A. V. Kravchenko
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Correspondence to D. G. Zublev, V. D. Barsky or A. V. Kravchenko.

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Translated by Bernard Gilbert

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Zublev, D.G., Barsky, V.D. & Kravchenko, A.V. Optimal Oven Heating of Coke Cake. 2. Selection of the Inert Gas. Coke Chem. 61, 291–296 (2018). https://doi.org/10.3103/S1068364X18080094

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