WO2019042156A1 - Resource recovery system for electronic waste - Google Patents

Abstract

Disclosed is a resource recovery system for electronic waste. The system comprises a pretreatment device (1), a plasma gasification melting device (2), a flue gas recycling device (3) and a valuable-metal extraction device (4); a gas outlet of the pretreatment device is connected to a tuyere of the plasma gasification melting device, and a discharge port of the pretreatment device is connected to a feed port of the plasma gasification melting device; and a flue gas outlet of the plasma gasification melting device is connected to a gas inlet of the flue gas recycling device, and a melting liquid outlet of the plasma gasification melting device is connected to a liquid inlet of the valuable-metal extraction device. The system provides devices for realizing the harmlessness of the sintering gas, waste heat recovery and harmlessness of the smelting flue gas, recycling of the tail gas, comprehensive recovery of valuable metals, etc. in a shorter process flow, and achieves sufficient harmlessness, reduction and resource utilization of the electronic waste.

Description

Electronic waste recycling system Technical field

The invention relates to the technical field of electronic waste recycling, in particular to an electronic waste resource recycling system.

Background technique

Electronic waste, commonly known as “electronic waste”, refers to the waste generated in the production process of electronic and electrical products and the electronic and electrical equipment that is discarded and is no longer used. It has a wide variety, complex composition and structure, and involves various fields of industrial production and residents' life. . With the rapid development of the electronic information industry and the continuous improvement of people's living standards, the speed of electronic product replacement is gradually increasing. The annual global electronic waste generation is as high as 40-50 million tons, and still grows by 5-10% annually. The increase in the rate poses a huge threat to the global ecological environment. Due to different application functions, working principles, and manufacturing processes, the structure of electronic products varies greatly. The composition and content of metals, plastics, ceramics, etc. contained in them are also different. The efficient recycling of electronic waste has become One of the difficult problems to be solved.

At present, the common practice in industrial processing of electronic waste is to manually or semi-automatically disassemble plastic or metal casings, common parts, hazardous parts or materials, circuit boards, and the like. Some ordinary parts are directly downgraded after passing the test; the outer casing and the non-recyclable ordinary parts can be obtained by mechanical crushing and sorting to obtain plastic, metal, ceramic and other pellets, which are recycled and reused after simple recycling; mobile phone batteries, Harmful parts such as printer ink cartridges and hazardous materials such as phosphors and liquid refrigerants are disposed of by specialized processing companies. The circuit board with the highest recycling value does not currently have a wide range of applicable technologies, such as wide applicability, strong operation, and economical and environmentally friendly recycling technology. . Companies such as Umicore in Belgium, Xstrata in Canada, and Boliden in Sweden have developed high-temperature smelting technology to treat electronic waste and other solid wastes containing precious metals. According to the design of smelting equipment, raw material compatibility scheme, smelting conditions, slag type selection and product composition The design of flue gas aftertreatment system is quite different, but its basic principle is similar. The use of heavy metals to capture precious metals achieves efficient recovery of precious metals. The organic materials in electronic waste are burned in high temperature conditions to provide heat for the smelting process. Reducing atmosphere. Although the high-temperature melting technology has a relatively successful industrial implementation example, its investment cost is huge, and it is limited by the temperature requirements of the traditional pyrometallurgical furnace, and has strict restrictions on the raw material composition.

Based on this, there is an urgent need for a new electronic waste resource processing equipment system to cope with the resources and environmental pressure brought by the rapid growth of electronic waste.

Summary of the invention

The object of the present invention is to provide an electronic waste resource recycling system with full utilization of resources and no secondary pollution.

In order to achieve the above object, an electronic waste resource recovery system provided by the present invention includes a pretreatment device, a plasma gasification smelting device, a flue gas resource utilization device, and a valuable metal extraction device; The gas outlet is connected to the air vent of the plasma gasification smelting device, and the discharge port of the pretreatment device is connected to the feed port of the plasma gasification smelting device; the flue gas outlet and the flue gas resource of the plasma gasification smelting device The inlet of the apparatus is connected, and the melt outlet of the plasma gasification smelting apparatus is connected to the inlet of the valuable metal extraction apparatus.

Further, the pretreatment device comprises a raw material silo, a first conveyor, a shear crusher, a second conveyor, a slag forming agent silo, a third conveyor, a binder silo, a fourth conveyor, Mixer, fifth conveyor, closed sintering machine, sixth conveyor, sintering furnace heating furnace, sintering exhaust gas collector, sintering exhaust gas pipeline, oxygen plant, oxygen-rich pipeline, gas mixing tank, intake pipeline, coke Silo and seventh conveyor;

The discharge port of the raw material silo, the first conveyor, the shear crusher and the second conveyor are connected in sequence, and the discharge port of the slag agent silo is connected with the feeding end of the third conveyor. The discharge port of the binder silo is connected to the feed end of the fourth conveyor, the discharge end of the second conveyor, the discharge end of the third conveyor, and the discharge end of the fourth conveyor are Connected to the feed port of the mixer;

The mixing machine, the fifth conveyor, the closed sintering machine, and the sixth conveyor are sequentially connected, and an inlet of the sintering exhaust gas collector is connected to an air outlet of the closed sintering machine, and the sintering exhaust gas collector is The gas outlet is connected to the tail gas inlet of the gas mixing chamber through the sintering exhaust gas pipeline; the oxygen inlet of the oxygen generating station is connected to the air inlet of the gas mixing chamber through the oxygen-rich pipeline, and the discharge port and the seventh conveying of the coke silo The feed ends of the machine are connected.

Further, a first flow meter is disposed on the pipeline of the sintering exhaust gas pipeline; and a second flowmeter is disposed on the pipeline of the oxygen-rich pipeline.

Further, the plasma gasification smelting apparatus includes a plasma furnace, a melt chute, and a flue gas duct;

The plasma furnace is provided with a feed port, a blast port, a melt outlet, and a flue gas outlet; the discharge end of the sixth conveyor and the discharge end of the seventh conveyor are connected to the feed port of the plasma furnace The gas outlet of the gas mixing chamber is connected to the air outlet of the plasma furnace through an air inlet duct, and the melt outlet of the plasma furnace is connected to the liquid inlet of the melt chute, and the flue gas outlet and the flue gas of the plasma furnace The air inlets of the pipes are connected.

Further, the flue gas outlet is disposed at the top of the plasma furnace, the melt outlet is disposed at the bottom of the plasma furnace, the tuyere is disposed at a middle portion of the plasma furnace, and the feed port is located at the flue gas outlet and the tuyere The air vents are arranged in a single layer or a double layer along the longitudinal direction of the plasma furnace, and the number of each layer is 3 to 12; the number of the exhaust ports is 1 to 4, and is connected to the exhaust port. There are 2 to 6 baffles in the front section of the exhaust pipe.

Further, a lower portion of the plasma furnace is provided with a plasma torch along a circumferential direction thereof, and the plasma torch is located between the air blowing port and the melt outlet, and the number is 3 to 12.

Further, the flue gas resourceizing device comprises a pure water tank, a quenching tower, a hot water pipeline, a filter, a waste heat boiler, a first gas pipeline, a cyclone dust collector, a second gas pipeline, a bag dust collector, and a third a gas pipeline, an alkali suction tower, a fourth gas pipeline, a water vapor reforming tower, a fifth gas pipeline, a Fischer-Tropsch synthesis tower, a gas circulation pipeline, a primary oil pipeline, a refined distillation tower, and a refined oil output pipeline;

The water outlet of the pure water tank is connected to the cold water inlet of the upper part of the quenching tower, and the gas outlet of the flue gas duct is connected with the air inlet of the lower part of the quenching tower, and the hot water outlet of the bottom of the quenching tower passes through the hot water pipeline Connected to the filter and the waste heat boiler in sequence;

The exhaust port at the top of the quenching tower and the first gas pipeline, the cyclone dust collector, the second gas pipeline, the bag filter, the third gas pipeline, the alkali suction tower, the fourth gas pipeline, the water vapor reforming tower, The fifth gas pipeline, the Fischer-Tropsch synthesis tower, the primary oil pipeline, the refined distillation tower, and the refined oil output pipeline are connected in sequence; the gas outlet of the top of the Fischer-Tropsch synthesis tower is connected to the inlet of the steam reforming tower through the gas circulation pipeline .

Further, the flue gas resource utilization device further includes a sludge bin, a first-stage ash collection bin, and a second-stage ash collection bin, wherein the sludge bin is disposed at a bottom of the filter and disposed opposite to the sludge outlet; The level ash collection bin is arranged at the bottom of the cyclone dust collector and is arranged opposite to the ash outlet; the second ash collection bin is arranged at the bottom of the bag filter and directly arranged opposite to the ash outlet.

Further, the valuable metal extraction device comprises a holding furnace, an alloy chute, a disc ingot casting machine, a transfer device, an electrolysis tank, a slag chute, and a glass drawing machine;

The liquid outlet of the melt chute is connected to the liquid inlet of the top of the holding furnace, and the alloy outlet at the bottom of the holding furnace is sequentially connected with the alloy chute and the disc ingot machine, and the transfer device is arranged in the disc casting machine. Between the electrolysis tank and the electrolysis tank; the slag outlet of the upper part of the holding furnace is connected to the slag chute and the glass drawing machine in sequence.

Further, the second conveyor, the third conveyor, the fourth conveyor, the sixth conveyor, and the seventh conveyor are all conveyors with weighing and weighing devices, and the closed sintering machine adopts N ₂ A sintering machine for protecting indirect heating; a CO detecting device and an O ₂ detecting device are disposed in the gas mixing chamber.

Compared with the prior art, the present invention has the following advantages:

Firstly, the invention provides a pretreatment device, a plasma gasification smelting device, a flue gas resource device, and a valuable metal extraction device in a short process flow, thereby realizing the harmlessness of the sintering gas and the waste heat recovery of the smelting flue gas. With the harmless, exhaust gas resources, comprehensive metal recycling, etc., the electronic waste is fully harmless, reduced, and resourced. The system can promote the application of solid waste mixed with similar organic and metal materials. The field of resource recycling.

Secondly, the medium ion gasification smelting temperature of the invention is high, and the organic matter in the electronic waste can be fully cracked, and the components such as metal, metal oxide, glass and ceramic are melted at the same time, and the composition requirements of the electronic waste are low.

Thirdly, the invention fully utilizes the non-metallic materials while recovering and extracting the metal in the electronic waste, and the organic matter plays a partial bonding role in the sintering process, wherein the carbon and hydrogen resources contained therein are recovered in the process of flue gas resource recycling. Silica-containing materials such as ceramics and glass reduce the amount of slag-forming agent and are ultimately processed into valuable glass products.

DRAWINGS

1 is a schematic diagram of a connection structure of an electronic waste recycling system;

Figure 2 is a schematic enlarged view of the pretreatment apparatus of Figure 1;

Figure 3 is a schematic enlarged plan view of the plasma furnace of the medium ion gasification smelting apparatus of Figure 1;

4 is a schematic enlarged structural view of the flue gas resourceizing device of FIG. 1;

Figure 5 is a schematic enlarged view of the valuable metal extraction device of Figure 1.

The devices or components in the figure are labeled as follows:

The pretreatment apparatus 1 includes a raw material silo 101, a first conveyor 102, a shear crusher 103, a second conveyor 104, a slag forming agent silo 105, a third conveyor 106, a binder silo 107, and a Four conveyors 108, a mixer 109, a fifth conveyor 110, a closed sintering machine 111, a sixth conveyor 112, a sintering furnace heating furnace 113, a sintering exhaust gas collector 114, a sintering exhaust gas line 115, and a first flow meter 116 The oxygen generation station 117, the oxygen-enriched conduit 118, the second flow meter 119, the gas mixing chamber 120, the intake duct 121, the coke silo 122, and the seventh conveyor 123.

The plasma gasification smelting apparatus 2 includes a plasma furnace 201 (in which: a feed port a, a blast port b, a plasma torch c, a melt outlet d, a flue gas outlet e), a melt chute 202, and a flue gas duct 203.

The flue gas resource generating device 3 includes a pure water tank 301, a quenching tower 302, a hot water pipe 303, a filter 304, a waste heat boiler 305, a sludge bin 306, a first gas pipe 307, a cyclone dust collector 308, and a primary ash. The collection bin 309, the second gas pipe 310, the bag filter 311, the second ash collection bin 312, the third gas pipe 313, the alkali suction tower 314, the fourth gas pipe 315, the water vapor reforming tower 316, and the fifth gas pipe 317, Fischer-Tropsch synthesis tower 318, gas circulation pipeline 319, primary oil pipeline 320, refined distillation column 321, and product oil output pipe 322.

The valuable metal extraction device 4 includes a holding furnace 401, an alloy chute 402, a disk ingot casting machine 403, a transfer device 404, an electrolytic cell 405, a slag chute 406, and a glass drawing machine 407.

Detailed ways

The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings.

As shown in the figure, an electronic waste resource recovery system includes a pretreatment device 1, a plasma gasification smelting device 2, a flue gas resource device 3, and a valuable metal extraction device 4; an outlet port of the pretreatment device 1 and The blast port of the plasma gasification smelting device 2 is connected, the discharge port of the pretreatment device 1 is connected to the feed port of the plasma gasification smelting device 2; the flue gas outlet of the plasma gasification smelting device 2 and the flue gas resource device 3 The gas inlets are connected, and the melt outlet of the plasma gasification smelting apparatus 2 is connected to the liquid inlet of the valuable metal extraction device 4.

The pretreatment apparatus 1 includes a raw material silo 101, a first conveyor 102, a shear crusher 103, a second conveyor 104, a slag forming agent silo 105, a third conveyor 106, an adhesive silo 107, and a fourth Conveyor 108, mixer 109, fifth conveyor 110, closed sintering machine 111, sixth conveyor 112, sintering furnace heating furnace 113, sintering exhaust gas collector 114, sintering exhaust gas pipeline 115, oxygen generating station 117, rich An oxygen conduit 118, a gas mixing chamber 120, an intake duct 121, a coke silo 122, and a seventh conveyor 123;

The raw material silo 101, the first conveyor 102, the shearing crusher 103, and the second conveyor 104 are sequentially connected, and the discharge port of the slag forming agent silo 105 is connected to the feeding end of the third conveyor 106, and the binder The discharge port of the silo 107 is connected to the feed end of the fourth conveyor 108, the discharge end of the second conveyor 104, the discharge end of the third conveyor 106, and the discharge end of the fourth conveyor 108 are The feed ports of the mixer 109 are connected; the second conveyor 104, the third conveyor 106, the fourth conveyor 108, the sixth conveyor 112, and the seventh conveyor 123 are all conveyors with weighing and weighing devices. The sealed sintering machine 111 is a sintering machine that uses N ₂ protection indirect heating; the gas mixing chamber 120 is provided with a CO detecting device and an O ₂ detecting device.

The discharge port of the mixer 109, the fifth conveyor 110, the closed sintering machine 111, and the sixth conveyor 112 are sequentially connected, and the inlet of the sintering exhaust gas collector 114 is connected to the gas outlet of the closed sintering machine 111, and sintered. The gas outlet of the exhaust gas collector 114 is connected to the exhaust gas inlet of the gas mixing chamber 120 through the sintering exhaust gas pipe 115. The first flow meter 116 is disposed on the pipeline of the sintering exhaust gas pipe 115; the gas outlet of the oxygen generating station 117 passes through the oxygen-rich pipe 118. The oxygen inlet of the gas mixing tank 120 is connected, and the second flow meter 119 is disposed on the pipeline of the oxygen-enriched pipeline 118; the discharge port of the coke silo 122 is connected to the feeding end of the seventh conveyor 123.

In the above technical solution, the plasma gasification smelting device 2 includes a plasma furnace 201, a melt chute 202, and a flue gas duct 203; the plasma furnace 201 is provided with a feed port a, a blast port b, a melt outlet d, and a flue gas outlet. e; the discharge end of the sixth conveyor 112 and the discharge end of the seventh conveyor 123 are connected to the feed port a of the plasma furnace 201, and the gas outlet of the gas mixing chamber 120 passes through the intake pipe 121 and the plasma furnace 201. The air blast opening b is connected, and the melt outlet d of the plasma furnace 201 is connected to the liquid inlet of the melt chute 202, and the flue gas outlet e of the plasma furnace 201 is connected to the air inlet of the flue gas duct 203.

In the above technical solution, the flue gas outlet e is disposed at the top of the plasma furnace 201, the melt outlet d is disposed at the bottom of the plasma furnace 201, the tuyere b is disposed at the middle of the plasma furnace 201, and the feed port a is located at the flue gas outlet e and Between the tuyere b; the tuyere b is arranged in a single layer or a double layer along the longitudinal direction of the plasma furnace 201, the number of each layer is 3 to 12; the number of the exhaust ports e is 1 to 4, and the exhaust port There are 2 to 6 baffles in the front section of the e-connected exhaust pipe. The lower portion of the plasma furnace 201 is provided with a plasma torch c along its circumferential direction, and the plasma torch c is located between the air blowing port b and the melt outlet d, and the number is 3 to 12.

In the above technical solution, the flue gas resourceizing device 3 includes a pure water tank 301, a quenching tower 302, a hot water pipe 303, a filter 304, a waste heat boiler 305, a first gas pipe 307, a cyclone dust collector 308, and a second gas pipe. 310, bag filter 311, third gas pipe 313, alkali suction tower 314, fourth gas pipe 315, water vapor reforming tower 316, fifth gas pipe 317, Fischer-Tropsch synthesis tower 318, gas circulation pipe 319, primary oil Product pipeline 320, refined distillation column 321 , and refined oil output pipe 322;

The water outlet of the pure water tank 301 is connected to the cold water inlet of the upper portion of the quenching tower 302, the air outlet of the flue gas duct 203 is connected to the air inlet of the lower portion of the quenching tower 302, and the hot water outlet at the bottom of the quenching tower 302 passes through the hot water pipe 303. Connected to the filter 304 and the waste heat boiler 305 in sequence;

The exhaust port at the top of the quenching tower 302 and the first gas pipe 307, the cyclone dust collector 308, the second gas pipe 310, the bag filter 311, the third gas pipe 313, the alkali suction tower 314, and the fourth gas pipe 315 The steam reforming tower 316, the fifth gas pipeline 317, the Fischer-Tropsch synthesis tower 318, the primary oil pipeline 320, the refined distillation tower 321, and the refined oil output pipeline 322 are sequentially connected; the gas outlet of the top of the Fischer-Tropsch synthesis tower 318 passes through the gas circulation. The conduit 319 is connected to the inlet of the steam reforming column 316.

The flue gas recycling device 3 further includes a sludge bin 306, a first-stage ash collecting bin 309, and a second-stage ash collecting bin 312, and the sludge bin 306 is disposed at the bottom of the filter machine 304 and is disposed opposite to the sludge outlet; The magazine 309 is disposed at the bottom of the cyclone dust collector 308 and disposed opposite to the ash outlet; the second ash collection chamber 312 is disposed at the bottom of the bag filter 311 and disposed opposite to the ash outlet.

In the above technical solution, the valuable metal extraction device 4 includes a holding furnace 401, an alloy chute 402, a disc ingot casting machine 403, a transfer device 404, an electrolysis tank 405, a slag chute 406, a glass drawing machine 407, and a melt chute 202. The liquid outlet is connected to the liquid inlet of the top of the holding furnace 401, and the alloy outlet at the bottom of the holding furnace 401 is sequentially connected with the alloy chute 402 and the disc ingot casting machine 403, and the transfer device 404 is disposed in the disc casting machine 403 and the electrolytic bath 405. The anode plate produced by the disc casting machine 403 is transported to the electrolytic cell 405 through the transfer device 404, and the slag opening in the upper portion of the holding furnace 401 is sequentially connected to the slag chute 406 and the glass drawing machine 407.

The method for processing electronic waste by using the electronic waste resource recycling system of the present invention is as follows:

1) Pretreatment: The waste computer mainframe is crushed into 5-10mm pellets by the crusher 103, and the material composition is analyzed. According to the plasma calcination furnace, the calorific value, acid-base, melt slurry fluidity and conductivity are included. And the demand for the drawing process of the molten glass, calculate the mass ratio of the slag forming agent (limestone, quartz sand), binder (saponite) and waste computer mainframe to 0.5:0.1:1, after mixing in the mixer 109, through the N _{The 2} sealed sealed sintering machine 111 is sintered into a block at 600 ° C, and the sintered exhaust gas is collected and mixed with the oxygen-enriched air in the gas mixing chamber 120 to detect and regulate the CO and O 2 concentrations thereof to maintain the subsequent gasification and smelting process in the reducing property. Conducted in the atmosphere;

2) Plasma gasification smelting: the sintering block is alternately introduced into the plasma furnace 201 by the sixth conveyor 112 and the coke through the seventh conveyor 123 at a mass ratio of 1:0.7 to form a column, and the column is preheated in sequence during the gradual lowering process. , reflow, gasification and other processes, adjust the input power of the plasma torch c, control the temperature of the melting zone at 1450 ~ 1500 ° C, the metal, glass, ceramics and slag forming agent in the raw material melt to form a molten liquid, gathered at the bottom of the furnace And discharged from the melt outlet d, the organic matter is vaporized and the part of the soot is discharged from the flue gas outlet e of the furnace top, and the flue gas temperature at the flue gas outlet e is 924 ° C;

3) Recycling of flue gas: The flue gas is rapidly cooled to 180 ° C by a quenching tower, and the obtained hot water is filtered by a filter 304 for waste heat power generation, and the cooled flue gas is further passed through a cyclone dust collector 308 and a bag dust collector. 311 removes solid particles, and the produced soot and sludge contain volatile metals and oxides such as lead, tin, lead oxide, zinc oxide, indium oxide, and tin oxide, which need to be comprehensively recovered and extracted, and the purified syngas is sucked by alkali. After the tower 314 removes the acid gas such as hydrogen chloride, hydrogen bromide or chlorine, the steam reforming is performed to adjust the volume ratio of H ₂ :CO in the synthesis gas to about 2:1 for preparing the synthetic oil;

4) Valuable metal extraction: the molten metal is sedimented at 1000 ° C in the holding furnace 401, the furnace body is poured to pour the upper slag into the slag chute 406, the glass product is prepared by drawing, and the bottom molten alloy liquid is injected into the disc ingot through the alloy chute 402. Machine 403, the obtained anode plate was electrolyzed to obtain a cathode copper product, the Cu recovery rate was 98.20%, the Au recovery rate in the anode mud was 99.98%, the Ag recovery rate was 99.87%, and the platinum group metal recovery rate was 99.65%.

The above is only the specific embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present invention are covered by the scope of the present invention.

Claims (10)

An electronic waste resource recovery system comprises a pretreatment device (1), a plasma gasification melting device (2), a flue gas resource device (3), and a valuable metal extraction device (4), characterized in that: The gas outlet of the pretreatment device (1) is connected to the air vent of the plasma gasification smelting device (2), the discharge port of the pretreatment device (1) and the feed port of the plasma gasification smelting device (2) Connected; the flue gas outlet of the plasma gasification smelting device (2) is connected to the inlet of the flue gas recycling device (3), the melt outlet of the plasma gasification smelting device (2) and the extraction of valuable metals The inlet of the device (4) is connected. The electronic waste recycling system according to claim 1, characterized in that the pretreatment device (1) comprises a raw material silo (101), a first conveyor (102), and a shear crusher (103). a second conveyor (104), a slag forming agent silo (105), a third conveyor (106), a binder silo (107), a fourth conveyor (108), a mixer (109), The fifth conveyor (110), the closed sintering machine (111), the sixth conveyor (112), the sintering furnace heating furnace (113), the sintering exhaust gas collector (114), the sintering exhaust gas pipeline (115), and the oxygen generating station (117), an oxygen-rich pipe (118), a gas mixing tank (120), an intake pipe (121), a coke bin (122), and a seventh conveyor (123); The raw material silo (101), the first conveyor (102), the shearing crusher (103), and the second conveyor (104) are sequentially connected, and the discharge port of the slag forming agent silo (105) is The feed ends of the third conveyor (106) are connected, the discharge port of the binder silo (107) is connected to the feed end of the fourth conveyor (108), and the second conveyor The discharge end of the machine (104), the discharge end of the third conveyor (106), and the discharge end of the fourth conveyor (108) are all connected to the feed port of the mixer (109). Connected The discharge port of the mixer (109), the fifth conveyor (110), the closed sintering machine (111), and the sixth conveyor (112) are sequentially connected, and the sintering exhaust gas collector (114) is advanced. a gas port is connected to an outlet of the closed sintering machine (111), and an outlet of the sintering exhaust gas collector (114) is connected to an exhaust gas inlet of the gas mixing chamber (120) through a sintering exhaust gas pipe (115); An air outlet of the oxygen generating station (117) is connected to an oxygen inlet of the gas mixing chamber (120) through an oxygen-enriched conduit (118), and a discharge port of the coke bin (122) and the seventh conveying The feed ends of the machine (123) are connected. The electronic waste recycling system according to claim 2, wherein the pipeline of the sintering exhaust gas pipe (115) is provided with a first flow meter (116); the tube of the oxygen-rich pipe (118) A second flow meter (119) is disposed on the road. The electronic waste recycling system according to claim 1 or 2 or 3, wherein the plasma gasification smelting device (2) comprises a plasma furnace (201), a melt chute (202), and a flue gas. Pipeline (203); The plasma furnace (201) is provided with a feed port (a), a blast port (b), a melt outlet (d), a flue gas outlet (e); and a discharge end of the sixth conveyor (112) The discharge end of the seventh conveyor (123) is connected to the feed port (a) of the plasma furnace (201), and the gas outlet of the gas mixing chamber (120) passes through the intake pipe (121) Connected to the air blast opening (b) of the plasma furnace (201), the melt outlet (d) of the plasma furnace (201) is connected to the liquid inlet of the melt chute (202), the plasma furnace ( The flue gas outlet (e) of 201) is connected to the air inlet of the flue gas duct (203). The electronic waste recycling system according to claim 4, wherein the flue gas outlet (e) is disposed at the top of the plasma furnace (201), and the melt outlet (d) is disposed at the plasma furnace ( 201) a bottom portion, the air blowing port (b) is disposed in a middle portion of the plasma furnace (201), and the feeding port (a) is located between the flue gas outlet (e) and the air blowing port (b); the air blowing port (b) arranged in a single layer or a double layer along the longitudinal direction of the plasma furnace (201), each layer having a number of 3 to 12; the number of the exhaust ports (e) being 1 to 4, and the exhaust port (e) The front section of the connected exhaust pipe is provided with 2 to 6 stages of baffles. The electronic waste recycling system according to claim 5, wherein a lower portion of the plasma furnace (201) is provided with a plurality of plasma torches (c) along a circumferential direction thereof, the plasma torch (c) ) is located between the tuyere (b) and the melt outlet (d), and the number is 3 to 12. The electronic waste recycling system according to claim 1 or 2 or 3, wherein the flue gas resourceizing device (3) comprises a pure water tank (301), a quenching tower (302), and a hot water pipeline. (303), filter (304), waste heat boiler (305), first gas pipe (307), cyclone dust collector (308), second gas pipe (310), bag dust collector (311), third Gas pipeline (313), alkali suction tower (314), fourth gas pipeline (315), steam reforming tower (316), fifth gas pipeline (317), Fischer-Tropsch synthesis tower (318), gas circulation pipeline (319) ), a primary oil pipeline (320), a refined distillation column (321), and a refined oil output conduit (322); The water outlet of the pure water tank (301) is connected to the cold water inlet of the upper portion of the quenching tower (302), the air outlet of the flue gas duct (203) and the air inlet of the lower portion of the quenching tower (302) Connected, the hot water outlet at the bottom of the quenching tower (302) is sequentially connected to the filter (304) and the waste heat boiler (305) through the hot water pipe (303); An exhaust port at the top of the quenching tower (302) and a first gas pipe (307), a cyclone dust collector (308), a second gas pipe (310), a bag dust collector (311), and a third gas pipe (313), an alkali suction tower (314), a fourth gas pipeline (315), a water vapor reforming tower (316), a fifth gas pipeline (317), a Fischer-Tropsch synthesis tower (318), and a primary oil pipeline (320) The refined distillation column (321) and the refined oil output pipe (322) are connected in sequence; the gas outlet at the top of the Fischer-Tropsch synthesis tower (318) passes through the gas circulation pipe (319) and the steam reforming tower (316). The ports are connected. The electronic waste recycling system according to claim 7, wherein the flue gas resourceizing device (3) further comprises a sludge bin (306), a primary ash collecting bin (309), and a secondary An ash collection bin (312), the sludge bin (306) is disposed at a bottom of the filter (304) and disposed opposite to the sludge outlet; the primary ash collection bin (309) is disposed at the cyclone (308) The bottom of the bottom is disposed opposite its ash outlet; the secondary ash collection bin (312) is disposed at the bottom of the baghouse (311) and is disposed directly opposite the ash outlet. The electronic waste recycling system according to claim 1 or 2 or 3, wherein the valuable metal extracting device (4) comprises a holding furnace (401), an alloy chute (402), and a disc ingot. Machine (403), transfer device (404), electrolytic cell (405), slag chute (406), glass wire drawing machine (407); The liquid outlet of the melt chute (202) is connected to the liquid inlet of the top of the holding furnace (401), the alloy outlet of the bottom of the holding furnace (401) and the alloy chute (402), the disc casting machine (403) sequentially connected, the transfer device (404) is disposed between the disc casting machine (403) and the electrolytic cell (405); the slag opening of the upper portion of the holding furnace (401) and the slag chute (406), the glass wire drawing machine (407) is connected in sequence. The electronic waste recycling system according to claim 2 or 3, characterized in that: the second conveyor (104), the third conveyor (106), the fourth conveyor (108), and the sixth conveying The machine (112) and the seventh conveyor (123) are all conveyors with weighing and weighing devices; the sealed sintering machine (111) is a sintering machine with N2 protection indirect heating; the gas mixing chamber (120) A CO detecting device and an O2 detecting device are provided inside.

Images