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Progress in Plasma Processing of Materials, 1999

ISBN:
1-56700-126-2 (Print)

THERMAL INSULATION OF PLASMA AND FLAME IN REVERSE VORTEX

A. Gutsol
Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials Kola Science Centre of the Russian Academy of Sciences

Abstract

Thermal insulation and stabilisation of microwave (MW) plasma and gaseous flame was investigated. It was discovered that changing the scheme of vortex stabilisation from conventional to the reverse one leads to a significant decrease of the heat loss to the wall: from 30% to 5% for 3.5 kW MW plasma torch and approximately the same for 2 kW gaseous combustion chamber. Results of numerical simulation of MW plasma torch of conventional and reverse vortex scheme are in good agreement with predictions and experimental data.