A Plasma Reactor for the Synthesis of High-Temperature Materials: Electro Thermal, Processing and Service Life Characteristics

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Galevskiy, G.V.^1 ; Rudneva, V.V.^1 ; Galevskiy, S.G.^2 ; Tomas, K.I.^3 ; Zubkov, M.S.^3

Siberian State Industrial University, ul. Kirova, 42, Novokuznetsk

654007, Russia^1

National Mineral Resources University, University of Mines, 21- th Line Vasilievsky Island, 2, Saint Petersburg

199106, Russia^2

Yurga Institute of Technology (Affiliate), National Research Tomsk Polytechnic University, ul. Leningradskaya, 26, Kemerovo obl., Yurga

652055, Russia^3

关键词: Functional capabilities;    High temperature materials;    Plasma forming gas;    Terms of services;    Thermal efficiency;    Tungsten cathodes;    Wall temperatures;    Zirconium dioxide;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012010/pdf
DOI  :  10.1088/1757-899X/142/1/012010

来源: IOP

【 摘 要 】

The three-jet direct-flow plasma reactor with a channel diameter of 0.054 m was studied in terms of service life, thermal, technical, and functional capabilities. It was established that the near-optimal combination of thermal efficiency, required specific enthalpy of the plasma-forming gas and its mass flow rate is achieved at a reactor power of 150 kW. The bulk temperature of plasma flow over the rector of 12 gauges long varies within 55003200 K and the wall temperature within 1900850 K, when a cylinder from zirconium dioxide of 0.005 m thick is used to thermally insulate the reactor. The specific electric power reaches a high of 1214 MW/m3. The rated service life of electrodes is 4700 hours for a copper anode and 111 hours for a tungsten cathode. The projected contamination of carbides and borides with elec-trode-erosion products doesn't exceed 0.0001% of copper and 0.00002% of tungsten.