SYSTEM OF INTEGRATED ZERO-WASTE PROCESSING OF SOLID DOMESTIC AND INDUSTRIAL WASTES Russian patent published in 2018 - IPC F23G5/00 C10J3/00 B09B3/00 

FIELD: processing and recycling of waste.

SUBSTANCE: invention relates to treatment of solid domestic and industrial wastes (SDIW). Technical result is achieved by that the SDIW processing system includes technologically interconnected: a shaft-type counterflow reactor 1, which receives SDIW through preparation units 2, loading 3 and loading locks 4 and 5; high temperature heater 6 from which steam is supplied counter-current to the reactor via a supply lance with annular flue 7, heated to a temperature of not less than 1,700 °C. Apparatus 8 and 9 for releasing melts of minerals and metals, respectively. Two outlet annular gas outlets: first, 10 – for drawing off crude synthesis gas, second, 11 – for removal of raw pyrogas. Crude synthesis gas is sequentially sent through solids removal filter 12 to heat recovery device 13, dehydrating unit 14, gas separator 15, after which the purified and dried synthesis gas is supplied to receiver 16. Raw pyrogas is sent to purification unit 17 to remove solid particles, fat and resin contaminants, as well as chlorine, fluorine and sulfur contaminants, after which purified pyrogas enters drying unit 18, then vessel 19. Solid particles from the filters, fat and resin contaminants are returned to the reactor through loading unit 27. Mixer 20 into which purified and dried synthesis gas and pyrogas are supplied to produce a normalised combustible mixture which is stored in gas tank 21. Gas-turbine power generating unit 22 for power supply of claimed system. Steam generator 23 for feeding high temperature heater 6 with steam with a temperature of up to 500 °C; a water treatment unit 24 for the steam generator, fed from an external source and using water from recycled water purification unit 25; a low-grade heat recovery device 26 for meeting utility needs using the heat of the combustion products from high temperature heater 6 and gas turbine power generating unit 22. To optimise the combustion process in combustion chambers, oxygen separated from nitrogen is used as the oxidising agent with increased oxygen content. Exhaust gases from high temperature heater 6 and gas turbine power generating unit 22 after heat recovery and carbon dioxide from gas separator 15 are sent to a greenhouse to increase carbon dioxide content in the air in order to enhance photosynthetic activity of plants in industrial greenhouses; low-grade heat from heat exchanger 26 is sent to heat the greenhouse building, soil or hydroponic systems.

EFFECT: technical result is higher productivity of the treatment process, efficiency and simultaneous environmental safety by eliminating formation of dioxins.

3 cl, 1 dwg