Simulation of heat and mass transfer in a shaft of plasma electric furnace, when utilizing technogeneous wastes

Abstract

A mathematical model of heat and mass transfer between counter flows of gas and porous material of man-made waste is presented. The model takes into account the partial and total pressure of the vapor-gas mixture, the radiation heat exchange between the gas and solid phases, the chemical transformations in the individual components of the charge, and the moisture content of the waste is also taken into account. Heat and mass transfer in the chamber of a shaft plasma-ohmic electric furnace was studied for gasification of technogeneous wastes with the use of additional ohmic heating in the drying zone. The influence of ohmic heating on heat and mass transfer is shown not only in the drying zone, but also in the entire shaft of electric furnace.