METHOD FOR PRODUCING LOW-TEMPERATURE PLASMA AND HOT GAS FOR PHYSICO-CHEMICAL EFFECT ON SUBSTANCES AND UNIT FOR PRODUCING LOW-TEMPERATURE PLASMA AND HOT GAS FOR PHYSICO-CHEMICAL EFFECT ON SUBSTANCES (VARIANTS) Russian patent published in 2021 - IPC B01J19/08 H05H1/24 H05H1/34 

FIELD: plasma technique.

SUBSTANCE: group of inventions relates to the field of plasma chemistry, namely, to methods for producing low-temperature plasma and hot gas for physico-chemical effect on substances and to units for implementation thereof. The group of inventions proposes a method and two variants of a unit for producing low-temperature plasma and hot gas for physico-chemical effect on substances, wherein aqueous electrolyte solutions are supplied into a mixing chamber through electrodes with internal cavities and elements made of porous materials at the outputs of the cavities. Electric arc discharges of alternating current are ignited between the surfaces of the elements made of porous materials moistened with the electrolyte solutions. Gaseous components for producing low-temperature plasma and hot gas are supplied into the mixing chamber, mixed with plasma obtained in the electric arc discharges to conduct plasma chemical reactions. The products of said reactions are removed from the mixing chamber. The walls of the mixing chamber are cooled by the components for producing low-temperature plasma and hot gas. The elements made of porous materials are preferably made of corundum and cooled by the evaporating electrolyte solution. The temperature of the walls of the mixing chamber and the surface of the elements made of porous materials does not exceed 100°C, and the units have a long continuous operation life without replacing the electrodes and other parts of the units. The temperature and composition of the hot gases removed from the units are adjusted by changing the flow rates and compositions of the components for conducting various physico-chemical effects on substances. In the first variant of the unit, two electrodes are connected to a single-phase source of alternating voltage. In the second variant of the unit, three electrodes are connected to a three-phase source of alternating voltage in the "star" configuration.

EFFECT: group of inventions provides a physico-chemical effect on substances, continuous for long periods of time, by a flow of low-temperature plasma and hot gas with a composition and a temperature suitable for conducting technological plasma processes.

35 cl, 3 dwg