ELECTRIC ARC DC PLASMATRON FOR INSTALLATIONS OF SOLID WASTES PLASMA TREATMENT Russian patent published in 2010 - IPC H05H1/32 F23G5/10 

FIELD: electricity.

SUBSTANCE: invention relates to the field of solid wastes processing and may be used in industrial enterprises and also in municipal services. Electric arc DC plasmatron comprises coaxial hollow cylindrical water-cooled electrodes (anode and cathode) with vortical supply of plasma-generating gas into gap between anode and cathode with the help of nozzle (interelectrode insert), aranged of insulating material, coaxial with anode and cathode, and having tangential holes for supply of gas arranged in cavity perpendicular to axis of electrodes along tangent to inner surface of nozzle, where anode has inner diametre d_a of channel and length of channel I_a=(8÷12)d_a. Cathode is arranged in the form of sleeve with inner diametre d_c=(1÷1.15)d_a and depth I_c=(1÷3)d_a. Inner diametre of nozzle d_i=(2÷2.5)d_a, and thickness of nozzle wall, where holes are provided in number from 4 to 6 for gas supply, makes (0.2÷0.3)d_a, openings in nozzle have diametre (0.08÷0.1)d_a and are evenly arranged along nozzle circumference.

EFFECT: increased service life of plasmatron and expanded range of its working characteristics.

4 cl, 2 dwg