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Neutralization of Sulfur Compounds during the Filter Combustion of Brown Coals with Mineral Additives

  • COMBUSTION, EXPLOSION, AND SHOCK WAVES
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Abstract

Gasification of sulfurous brown coal with the addition of up to 50 wt % of the mineral component is studied. Porcelain Raschig rings are used as the mineral component, playing the role of a chemically inert heat carrier or marble particles, which additionally react with sulfur-containing compounds. The heat of the combustion of gaseous products and the sulfur content in the ash residue are determined depending on the type and proportion of the additive introduced into the gasified material. Using X-ray phase analysis, it is shown that in the solid combustion residue, sulfur compounds are in the form of calcium sulfide and sulfate. It is found that the addition of 50 wt % of marble leads to the proportion of sulfur in the ash residue tripling to 37% of the original sulfur content. Adding 50 wt % of an inert filler in the charge increases the temperature mode of filtration combustion (from 1270 to 1400°C), as a result of which sulfur compounds pass from the solid phase to the gas phase.

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ACKNOWLEDGMENTS

The elemental composition of the combustible materials, the resulting combustion products, and the composition of marble and the mineral part of the ash were determined by employees of the IPCP RAS, G.V. Guseva and N.N. Dremova. The X-ray phase analysis and interpretation of X-ray diffraction patterns were performed in the laboratory of structural chemistry by D.V. Korchagin.

Funding

The study was financially support by state order no. 0089-2019-0018 (registration number АААА-А19-119022690098-3).

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia

    V. M. Kislov, Yu. Yu. Tsvetkova, M. V. Tsvetkov, E. N. Pilipenko & M. V. Salganskaya

  2. Moscow State University, Moscow, Russia

    M. V. Salganskaya

Authors
  1. V. M. Kislov
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  2. Yu. Yu. Tsvetkova
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  3. M. V. Tsvetkov
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  4. E. N. Pilipenko
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  5. M. V. Salganskaya
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Correspondence to V. M. Kislov.

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Kislov, V.M., Tsvetkova, Y.Y., Tsvetkov, M.V. et al. Neutralization of Sulfur Compounds during the Filter Combustion of Brown Coals with Mineral Additives. Russ. J. Phys. Chem. B 15, 645–651 (2021). https://doi.org/10.1134/S1990793121040187

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  • DOI: https://doi.org/10.1134/S1990793121040187

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