High voltage AC plasma torches with long electric arcs for plasma-chemical applications

14th High-Tech Plasma Processes Conference

Surov, A.V.^1,2 ; Popov, S.D.^1,2 ; Serba, E.O.^1 ; Pavlov, A.V.^1 ; Nakonechny, Gh.V.^1 ; Spodobin, V.A.^1 ; Nikonov, A.V.^1 ; Subbotin, D.I.^1 ; Borovskoy, A.M.^1

Institute for Electrophysics and Electric Power of Russian Academy of Sciences (IEE RAS), Dvortsovaya emb. 18, St. Petersburg

191186, Russia^1

Peter the Great St.Petersburg Polytechnical University, Polytechnicheskaya 29, St.Petersburg

195251, Russia^2

关键词: Chemical applications;    Continuous operation;    Cylindrical channel;    Gas-vortex stabilization;    Hollow electrodes;    Operation characteristic;    Thermal efficiency;    Two electrodes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/825/1/012016/pdf
DOI  :  10.1088/1742-6596/825/1/012016

来源: IOP

【 摘 要 】

Powerful AC plasma torches are in demand for a number of advanced plasma chemical applications, they can provide high enthalpy of the working gas. IEE RAS specialists have developed a number of models of stationary thermal plasma torches for continuous operation on air with the power from 5 to 500 kW, and on mixture of H2O, CO2and CH4up to 150 kW. AC plasma torches were tested on the pilot plasmachemical installations. Powerful AC plasma torch with hollow electrodes and the gas vortex stabilization of arc in cylindrical channels and its operation characteristics are presented. Lifetime of its continuous operation on air is 2000 hours and thermal efficiency is about 92%, the electric arc length between two electrodes of the plasma torch exceeds 2 m.