On the Effect of the Distances between Coal and Wood Particles during Their Joint Pyrolysis on Sulfur Oxides Formation

Stanislav Yankovsky, Anton Tolokol’nikov, Albina Misyukova and Geniy Kuznetsov
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Stanislav Yankovsky: The Butakov Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Anton Tolokol’nikov: The Butakov Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Albina Misyukova: The Butakov Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Geniy Kuznetsov: The Butakov Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia

Energies, 2021, vol. 14, issue 24, 1-14

Abstract: The simultaneous pyrolysis of coal with wood was experimentally found to allow reducing concentrations of sulfur-containing substances in gases released. The objective of experimental studies is comparison of the sulphate of calcium and aluminum in the ash of coal-wood mixtures after pyrolysis of the latter in a dense “packing” of aggregate particles of these two fuels and at a few millimeters distance between particles. The 3B-grade lignite, T-grade bituminous coal and pinewood sawmill waste were chosen as feedstocks for pyrolysis experiments because they are widespread in Russia as well as many other countries. The elemental composition of all raw materials and pyrolysis residues was determined. The inorganic composition of obtained pyrolysis product in the solid phase was characterized by X-ray analysis. The content of aluminum and calcium sulfate in residue in case of simultaneous processing of coal with wood was found to be higher, compared to the processing of coal only (within the random errors of the experiment), than those established for such mixtures under conditions of dense “packing” of large masses (up to 15 g).

Keywords: coal; wood; pyrolysis; elemental composition; solid combustion products; aluminum and calcium sulfates (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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