Method and device for generating a non-sothermal plasma jet

Abstract

The invention relates to a method for generating an axisymmetric non-isothermal plasma jet by means of a high-voltage electrical discharge of a single-phase or three-phase direct or alternating current into a gas flow, wherein said discharge is initiated by a discharge plasma, propelled by an electromagnetic force and by the drag force exerted by the gas flow and localized at the ends of the electrodes, characterized in that the gas flow propelling the plasma of the discharge is stabilized and laminarized at all points of the resulting plasma jet, and to a device for using the method comprising, in particular, a gas propellant dispenser consisting of elements for the laminarization of the flow in a honeycomb system or an abruptly expanding system, wherein a system of magnetic fields forms the plasma cords and conduits for the introduction of the propulsion and rotation gas components of the propulsion gas flow.

Description

Technical field [0001] The invention relates to a method for controlling the generation of a non-isothermal plasma jet by a pressure close to the atmospheric pressure and a device for realizing the method. Background technique [0002] The generation of plasma jets is related to material conversion technology, especially plasma chemistry, and more particularly the destruction of products and waste. [0003] In practice, the most well-known and most commonly used plasma generators are isothermal plasma generators that use direct current, alternating current, high frequency, and microwave, especially in industry and especially for destroying household, medical, industrial and other waste materials. [0004] "Isothermal" means that the temperature Ta of the different components of the plasma, especially the heavier particles (molecules, atoms, radicals, and ions), and the temperature Te of electrons are actually equal. According to the definition, regardless of its volume, the followin...

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Problems solved by technology

[0028] The mentioned methods and generators have the following disadvantages, which make their application difficult in practice or significantly reduce their effectiveness:

[0029] 1. The generated plasma jet is spatially inhomogeneous;

[0030] 2. The generated plasma is unstable;

[0031] 3. Cannot control the method and its parameters;

[0032] 4. The finite (reduced) size of the plasma region;

[0033] 5. The plasma generation area is limited by electrodes (the presence of electrodes in the plasma area hampers the generation area)

However, prolonging the plasma jet is not possible according to the prior art, since in the prior art this occurs considering that the increase in power loss is practically proportional to the square of the jet size, close to the square of the spherical shape The input power and energy efficiency of the converter are improved very little

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