4.5 Article

Possibilities for Reducing CO and TOC Emissions in Thermal Waste Treatment Plants: A Case Study

Journal

ENERGIES
Volume 14, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/en14102901

Keywords

waste thermal treatment; flue gas treatment; air pollution; rotary kiln

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The technology of waste-management thermal processing is widely used due to its advantages, but continuous research is needed to develop methods for reducing harmful emissions and improving pollutant removal. Experimental redesign of a thermal industrial waste treatment plant successfully reduced concentrations of carbon monoxide and volatile organic compounds in flue gases without affecting other technological parameters.
The technology of waste-management thermal processing may pose a threat to the natural environment through the emission of harmful substances, such as CO, NOx, SO2, HCl, HF, total organic carbon (TOC) and dust, as well as dioxins and furans. Due to the advantages of thermal waste treatment, including the small volume of solid residue produced and possible thermal energy recovery, thermal waste treatment is widely applied. Continuous research is necessary to develop methods for reducing the risk of harmful substances being produced and methods for the effective removal of pollutants resulting from flue gases. This paper presents an analysis of the results and conditions of the experimental redesign of a thermal industrial waste (polypropylene) treatment plant. The purpose of the redesign was to improve the quality of gasification and afterburning processes taking place in the combustion and afterburner chambers (through the installation of an additional section), thus resulting in a reduction in the concentrations of CO and total organic carbon (TOC) in flue gases. The research concerned a facility implementing the combustion process on an industrial scale. The experiment led to a reduction in the average concentrations of carbon monoxide from 16.58 mg/m(3) to 3.23 mg/m(3) and of volatile organic compounds from 2.20 mg/m(3) to 0.99 mg/m(3). At the same time, no deterioration was observed in any of the remaining technological parameters of the plant, such as waste combustion performance and the energy efficiency of the thermal energy recovery system.

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