DEVICE FOR REWORKING SOLID WASTES Russian patent published in 1997 - IPC

FIELD: reworking solid wastes in public services and industries through gasification obtaining ecologically pure gases and coke-ash residue. SUBSTANCE: device has horizontal housing, fittings for supply of starting material and removal of coke-ash residue heating chamber located outside the housing and provided with furnaces and devices for supply of air and discharge of combustion products. Device is provided with movable different-sized bridges secured to upper wall of housing dividing its interior into drying zone, pyrolysis zone and afterburning zone. Upper part of afterburning zone is connected with lower part of pyrolysis zone by means of outer channel; upper part of pyrolysis zone is connected with lower part of drying zone by means of outer channel and upper part of drying zone is connected with furnace by means of outer channel. Outlets of outer channels into lower parts of drying and pyrolysis zones are made in form of two-dimensional nozzles directed in way of motion of material in housing. Height of bridge separating the afterburning and pyrolysis zones is equal t 1.1 of height of pyrolysis zone and height of bridge separating the pyrolysis and drying zones is equal to 0.5 of height of pyrolysis zone. Device has form of trapezium in plan at expansion angle of 1 to 3 deg towards motion of material; afterburning zone is provided with vertical channel for supply of air whose lower shear is located at distance from bottom of chamber equal to 5-8 calibres of outlet nozzle. EFFECT: enhanced efficiency. 6 cl, 2 dwg