О выборе параметров высокочастотного индукционного плазмотрона и дисперсного потока испаряемых кварцевых частиц

Abstract

Numerical simulation of the heating and evaporation processes of quartz particles in a technical induction plasma torch of argon plasma was performed in the framework of a two-phase collisionless monodisperse model. The particle supply conditions within a full and partial penetration through the frontal ring-type vortex into discharge zone were determined. The dependences of the evaporation degree and specific energy cost for evaporation on the main operation parameters of the particle processes, primarily the coupled power of plasma torch, as well as the particle size, feed rate and entry angle into the discharge zone were established. The recommendations on the choice of the optimal operation parameters of the plasma torch and the flow parameters of quartz particles were given. It was shown that the technical induction plasma torch with a coupled power of about 5 kW can provide a complete evaporation of the quartz particles with sizes up to 50 – 70 μm and mass flow rate of up to (8 – 10) ‧10-5 kg/s under a specific energy cost at 50 MJ/kg