APPLICATION OF THE BIOMASS PYROLISIS PRODUCTS AS A REBURNING FUEL FOR NITROGEN OXIDES REDUCTION: TESTING THE CHEMICAL KINETICS MECHANISM


  • S.G. Kobzar Institute of Engineering Thermophysics, NAS of Ukraine
  • A.A. Khalatov Institute of Engineering Thermophysics, NAS of Ukraine
Keywords: biomass, pyrolysis gas, coal combustion, nitrogen oxides, nitrogen oxides reduction

Abstract

The mechanisms of chemical kinetics of the Reburning process using pyrolysis gases as a reburn fuel are determined. It has been shown that CO, CO2, H2 have very little effect on the reduction of the nitrogen oxides under conditions characteristic for the coal combustion, and hydrocarbons play the major contribution to the reduction of the nitrogen oxides. The results of the test calculations showed that the process of the nitrogen oxides reduction by the biomass pyrolysis products can be calculated by a simplified mechanism of the chemical kinetics of the Reburning process by replacing hydrocarbons with one substance (with a close carbon/hydrogen ratio as in the real pyrolysis gas mixture), provided that the mass fraction of carbon is preserved, fed to the reduction of nitrogen oxides unchanged. This approach significantly reduces machine time and calculates the nitrogen oxides reducing efficiency by Reburning technology with an accuracy of 17%.

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Published
2020-04-25
How to Cite
Kobzar, S., & Khalatov, A. (2020). APPLICATION OF THE BIOMASS PYROLISIS PRODUCTS AS A REBURNING FUEL FOR NITROGEN OXIDES REDUCTION: TESTING THE CHEMICAL KINETICS MECHANISM. Thermophysics and Thermal Power Engineering, 42(2), 92-98. https://doi.org/https://doi.org/10.31472/ttpe.2.2020.10
Section
Fuel Utilization and Burning, Heat Power Units, Ecology