METHOD FOR GASIFICATION OF SOLID FUEL USING MECHANICAL AND PLASMA ACTION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC F23B90/00 F23K1/02 

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and can be used in solid fuel combustion. Device for gasification of solid fuel using mechanical and plasma action includes fuel crushing unit, vortex channel, nozzle for fuel supply and plasmatrons, interconnected units of the first and the second gasification stages, made with provision of serial flow of fuel and plasma flow from the unit of the first stage to the unit of the second stage. Fuel crushing unit is made in form of hydraulic percussion unit of wet grinding and comprises closed volume with moving and fixed impact surfaces, channels for solid fuel loading and water supply to closed volume, and also pump for fuel supply in the form of water emulsion from crushing unit to unit of the first stage of gasification, plasmatrons of gasification units are steam plasmotrons with a conical interelectrode chamber and are made with supply of synthesis gas CH₄ and steam with possibility of adjusting temperature and flow rate of plasma, unit of first stage of gasification is made in form of vortex channel, in which a fuel supply nozzle in the form of an aqueous emulsion is installed, which is arranged to provide fuel supply along a tangent to the vortex channel cross section from top to bottom, and in the zone of the opposite quadrant of the circle circumference of the vortex channel there is a plasmatron provided with supply of the plasma jet at a tangent to the vortex channel cross section from below upwards, second plasmatron is located at end of vortex channel to feed plasma jet along vortex channel, unit of second stage of gasification is located below unit of first stage of gasification and equipped with two plasmatrons.

EFFECT: technical result of invention is to ensure homogeneity of propellant mixture before feeding into gasification chamber without the need for its mechanical activation, avoiding the need to separate fine and coarse fractions, eliminating reaction products in the form of oxides.

3 cl, 2 dwg