FIELD: oil and gas industry.
SUBSTANCE: plant for hot gas production from carbonaceous material comprises fluidized bed reactor 1 for carbon conversion with pipe 6 for hydrogen supply to consumers, fluidized bed reactor 2 to decompose calcium carbonate CaCO3 with pipe 7 for carbon dioxide supply to consumers, cyclone 12 with hot air supply pipe 8 with a lack of oxygen for consumers and oxidation reactor 3 for FeO iron oxide. Fluidized bed reactor 1 for carbon conversion has pipeline 4 for superheated steam supply, additional charging tube 25 for calcium oxide CaO, removing tube 11 for waste calcium oxide CaO and ash. Fluidized bed reactor 2 is connected to fluidized bed reactor 1 via upper 37 and lower 38 overflows and has additional charging tube 9 for calcium carbonate CaCO3 and hematite Fe2O3 and removing tube 10 for waste calcium carbonate CaCO3 and hematite Fe2O3. Reactor 3 for iron oxide FeO oxidation has hot compressed air supply pipe 5 and is connected to fluidized bed reactor 2 via lower line overflow 39 for decomposition of calcium carbonate CaCO3 and via upper line overflow 40 to cyclone 12 which is connected to fluidized bed reactor 2. The plant is additionally equipped with pyrolysis furnace 14 which includes furnace chamber 16 with discharge tube for furnace combustion products 18, angled antechamber 36, retort 13 for wood pyrolysis with pyrolysis gas outlet tube 19 to consumers. The retort for wood pyrolysis has superheater 26 with the pipeline for wet water steam supply for overheating and internal burner for burning the pyrolysis gas in the furnace chamber. The superheater is connected to the conduit for superheated steam supply to the fluidized bed reactor for carbon conversion and to the fluidized bed reactor for calcium carbonate CaCO3 decomposition, as well as external burner 21 with blow fan 22 and air heater 28 connected to compressed air blower 23 which is coupled with air suction line 24. The compressed air heater is connected to the oxidation reactor for FeO iron oxide via a compressed air supply conduit.
EFFECT: reduced fuel costs during hot gas production.
1 dwg
