PLASMA-CHEMICAL METHOD OF PROCESSING SOLID DOMESTIC AND INDUSTRIAL WASTES Russian patent published in 2013 - IPC F23G5/00 C22B7/00 

FIELD: chemistry.

SUBSTANCE: method of processing domestic and industrial wastes involves loading the wastes with preliminary separation by separating glass, concrete, ceramics and metal; drying with partial pyrolysis of organic matter in a shaft furnace; agitation of the processed wastes with further pyrolysis thereof. Temperature of said process is reduced to 500-850°C as a result of the action of reducing plasma-chemical components obtained by steam-oxygen conversion of methane with increase in consumption of steam fed by the counter-current of the moving wastes. Recycled process gas coming from the shaft furnace is cleaned in scrubbers and is divided into fuel gas which is fed into both the methane converter and the exhaust-heat boiler when producing reducing gas with partial addition of natural gas and oxygen. Exhaust gases from the exhaust-heat boiler are cleaned in an adsorber via contact with fine-grained lime. Also, a portion of the formed reducing gases is consumed in the bottom part of the reactor during an instantaneous thermal shock which results from burning soot-dust particles coming from a hot gas cyclone with deposition thereon of dioxins, furans and other harmful components in an atmosphere of oxygen, wherein the formed reducing gases can also be fed as synthesis gas for production of methanol, dimethyl ether, engine fuel and other products.

EFFECT: invention reduces power consumption of the method.

1 dwg