THERMODYNAMIC EVALUATION OF THE USING OF CARBONATE SORBENTS IN DRY METHODS OF FLUE GAS DESULPHURIZATION

  • V.V. Kolesnyk State University of Infrastructure and Technology, Kyiv
  • V.M. Orlyk The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • V.A. Zhaivoronok The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
Keywords: flue gas desulphurization (FGD), limestone, lime, thermodynamic analysis

Abstract

In the article the comparative analysis of energy consumption in the process of combustion of solid fuel containing sulfur compounds, while simultaneously feeding directly into the fire space of the boiler of carbonate sorbents (CaCO3, Ca(OH)2, CaO) for the absorption of formed sulfur dioxide, as is the case in dry methods of flue gas desulphurization, was presented. The calculations were made when supplying sorbents in a stoichiometric ratio and with a triple excess sorbent. It was shown that the energy costs for decomposition and heating of CaCO3 and Ca(OH)2 or only the heating of CaO when applied in the dry method desulphurization are practically compensated by the secondary reactions of the sequestration of sulfur dioxide. A simple and practical method for determining the temperature of a stationary state with simultaneous flow of coal combustion processes and sulfur dioxide chemisorption by carbonate sorbents was proposed, which is essential for choosing a temperature range in which sulfur is actively absorbed without decomposition of CaSO4 formed. Bibl. 6, Fig. 3, Tab. 1.

Author Biographies

V.V. Kolesnyk, State University of Infrastructure and Technology, Kyiv

Candidate of Technical Sciences

V.M. Orlyk, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Technical Sciences

References

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Published
2018-12-19
How to Cite
Kolesnyk, V., Orlyk, V., & Zhaivoronok, V. (2018). THERMODYNAMIC EVALUATION OF THE USING OF CARBONATE SORBENTS IN DRY METHODS OF FLUE GAS DESULPHURIZATION. Energy Technologies & Resource Saving, (4), 29-34. https://doi.org/10.33070/etars.4.2018.04
Section
Thermophysical basics of energy processes

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