CONDITIONS FOR FORMATION OF DIOXINS AT HIGH-TEMPERATURE COMBUSTION OF CHLORINE-CONTAINING MATERIALS
https://doi.org/10.17073/0368-0797-2015-2-77-82
Abstract
High-temperature (over 1600 °C) combustion of chlorine-containing waste immediately destroys all organic compounds including dioxins, furans, chloro-phenols and others. However, subsequent
cooling of chlorine-containing gas to temperatures below 500 °C creates conditions for the secondary synthesis of dioxins. The study fi ndings show that the probability of dioxin formation in this case
rises with the increasing of oxygen, chlorine and fl uorine contents with the concurrent decreasing of sulfur content in the waste gas. For the effi cient suppression of secondary dioxin formation, waste
should be incinerated at a minimum residual oxygen content in the gas whilst high contents of chlorine and fl uorine should be reduced by high-temperature (at 600 – 1000 °C) gas neutralization by chemi-
cal compounds of alkaline or alkaline-earth elements (e.g. by injection of powdered sodium carbonate into the gas).
About the Authors
V. I. Berdnikov
Industrial company “Technologiya Metallov”
Russian Federation
Cand. Sci. (Eng.), Senior Researcher
Russian Federation
Cand. Sci. (Eng.), Senior Researcher
Yu. A. Gudim
South Ural State University
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor
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Review
For citations:
Berdnikov V.I., Gudim Yu.A. CONDITIONS FOR FORMATION OF DIOXINS AT HIGH-TEMPERATURE COMBUSTION OF CHLORINE-CONTAINING MATERIALS. Izvestiya. Ferrous Metallurgy. 2015;58(2):77-82. (In Russ.) https://doi.org/10.17073/0368-0797-2015-2-77-82
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