Integrated devices for drying organic solid wastes and extracting metals and methods thereof

A method implemented on an integrated device for drying organic solid waste and extracting metals, the integrated device comprising:

• a pyrolysis chamber (1), a high-temperature cracking chamber (2), a material drying chamber (3), a steam boiler (4), a cyclonic dust removal chamber (5), a spray chamber (6), an electrostatic dust removal chamber (7), a water bath purification chamber (8), a biomass gas treatment chamber (9), and a metal carbonization chamber (10), wherein
• the pyrolysis chamber (1) is connected to the high-temperature cracking chamber (2) through an air passage port (26), a first biomass air inlet (16) is disposed on the pyrolysis chamber (1), a second biomass air inlet (37) is disposed on the high-temperature cracking chamber (2), and the high-temperature cracking chamber (2) is connected to the material drying chamber (3) through a lower hot air pipe (39) and an upper hot air pipe (40);
• an air-drying cylinder (41) is disposed in the material drying chamber (3), the upper hot air pipe (40) is in communication with an interior of the air-drying cylinder (41), the lower hot air pipe (39) is in communication with a space outside the air-drying cylinder (41), the space outside the air-drying cylinder (41) is in communication with the steam boiler (4) through a first connecting gas pipe (48), and the interior of the air-drying cylinder (41) is in communication with a discharge pipe (47);
• a hot air outlet (49) is disposed on the first connecting gas pipe (48), a first gas outlet (45) is disposed on the discharge pipe (47), a hot water inlet (50) is disposed on the steam boiler (4), and the steam boiler (4) is connected to the cyclonic dust removal chamber (5) through a second connecting gas pipe (52);
• a cyclonic exhaust pipe (54) is disposed in the cyclonic dust removal chamber (5), the cyclonic exhaust pipe (54) is connected to the spray chamber (6) through a third connecting gas pipe (56) an induced draft fan (55) is disposed on the third connecting gas pipe (56), the spray chamber (6) is connected to the electrostatic dust removal chamber (7) through a fourth connecting gas pipe (60), the electrostatic dust removal chamber (7) is connected to the water bath purification chamber (8) through a fifth connecting gas pipe (61), the water bath purification chamber (8) is connected to an exhaust pipe (68), and the exhaust pipe (68) is connected to the high-temperature cracking chamber (2) through a tail gas recovery pipe (70);
• a plurality of condenser tubes (87) are disposed in the biomass gas treatment chamber (9) in a transverse arrangement, one end of each condenser tube (87) is a gas inlet (88), and the other end is a gas passage port (92), the gas passage port (92) is connected to a drying chamber (94), and a second gas outlet (95) is disposed on the drying chamber (94);
• a water inlet (89) and a water outlet (93) are disposed on the biomass gas treatment chamber (9), the second gas outlet (95) is connected to the first biomass air inlet (16) through a gas return pipe (86), the gas inlet (88) is connected to the first gas outlet (45) through a first hot air inlet pipe (84), and the water outlet (93) is connected to the hot water inlet (50) through a first connecting water pipe (98);
• and
• a pyrolysis gas outlet (81) and a plurality of hot air inlets (83) are disposed on the metal carbonization chamber (10), the pyrolysis gas outlet (81) is connected to the second biomass air inlet (37) through a gas outlet pipe (85), and the plurality of hot air inlets (83) are connected to the hot air outlet (49) through a second hot air inlet pipe (107);
• wherein the method comprises:
• adding the organic solid waste into the pyrolysis chamber (1) for pyrolysis, a generated pyrolysis gas entering the high-temperature cracking chamber (2) through the air passage port (26) for cracking treatment, hot air generated by cracking entering into the material drying chamber (3) through the lower hot air pipe (39) to heat an outer side of the air-drying cylinder (41), and hot air generated by cracking through the upper hot air pipe (40) heating and drying a material to be dried inside the air-drying cylinder (41);
• a portion of the hot air on the outer side of the air-drying cylinder (41) entering the metal carbonization chamber (10) through the hot air outlet (49), the other portion of the hot air on the outer side of the air-drying cylinder (41) entering the steam boiler (4) through the first connecting gas pipe (48), the metal carbonization chamber (10) carbonizing and recovering added metal-containing waste, a generated gas entering the high-temperature cracking chamber (2) sequentially through the pyrolysis gas outlet (81), the gas outlet pipe (85), and the second biomass air inlet (37);
• the hot air in the air-drying cylinder (41) entering the biomass gas treatment chamber (9) sequentially through the first gas outlet (45), the first hot air inlet pipe (84), and the gas inlet (88), after the hot air is dehydrated in the biomass gas treatment chamber (9), the hot air entering the pyrolysis chamber (1) sequentially through the second gas outlet (95), the gas return pipe (86), and the first biomass air inlet (16) to be pyrolyzed;
• the hot air entering the steam boiler (4) being heat-absorbed and then, under action of the induced draft fan (55), being treated sequentially through the cyclonic dust removal chamber (5), the spray chamber (6), the electrostatic dust removal chamber (7), and the water bath purification chamber (8);
• and
• a portion of gas purified by the water bath purification chamber (8) entering the high-temperature cracking chamber (2) through the tail gas recovery pipe (70), and the other portion being discharged externally through the exhaust pipe (68).