Open AccessOptimization of thermophysical processes of bottom part of shaft furnace for plasma treatment plant of solid radioactive waste
Author(s) -
A. Yu Markelov,
A. A. Kudrinskiy,
S. V. Anpilov,
V. L. Shiryaevsky
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1370/1/012038
Subject(s) - slag (welding) , environmental science , materials science , waste management , municipal solid waste , process engineering , metallurgy , nuclear engineering , engineering
The task of analyzing various sources of heating in the bottom part of the shaft furnace to optimize thermophysical processes is of interest from both an economic and technological point of view. When replacing the type of heat source, it is necessary to preserve the performance characteristics, primarily high temperatures in the range of 1400-1600 °C for melting minerals. This work aims to substantiate plasma torches replacement by natural gas or diesel burners and to confirm preservation of the utilization process efficiency. In order to do this numerical modeling of thermal processes was used: CFD modeling of a full-sized shaft furnace with a melter, including the distribution of temperature fields in the slag melt layer and external thermal insulation materials. Other possible combinations were also analyzed to optimize heat exchange processes: ohmic heating of the melt, replacement of air with oxygen. The results of numerical simulation show that hydrocarbon burners can be used instead of plasma torches for efficient processing of various types of waste in the slag melt. This can be economically attractive for expanding the application area of waste treatment technology in the slag melt, especially for the housing sector waste processing.