Wind Separation Impurity Removal and Incineration Disposal Device for Industrial Solid Wastes

Abstract

Device for Separating Impurities from Industrial Solid Wastes by Air Separation and Incinerating and Disposing of Them. At present, there is no mature solid waste-coupled incineration boiler that can achieve long-term operation of industrial solid waste disposal, and there is no effective solution to the problem that solid waste is prone to coking due to metal impurities. The composition of the present invention includes: a solid waste bin (1), an air separator (3), a coal hopper (9), a fluidized bed incinerator (10), a cyclone separator (11), a loop seal (12), a flue shaft (13), a dust collector (15) and a chimney (16); the solid waste bin is connected to the solid waste inlet at the lower part of the air separator; the gas-solid outlet of the air separator is connected to the solid waste inlet at the lower conical section of the fluidized bed incinerator; the flue gas outlet at the upper part of the fluidized bed incinerator is connected to the flue gas inlet of the cyclone separator, the cyclone separator is provided with a coarse ash outlet at the bottom and is connected to the inlet of the loop seal, and the outlet of the loop seal is connected to the loop seal port provided at the lower conical section of the fluidized bed incinerator. The present invention is used for separating impurities from industrial solid wastes by air separation and incinerating and disposing of them.

Description

Technical Field

[0001] The invention relates to the field of solid waste disposal, and in particular to a device for air separation, impurity removal and incineration disposal of industrial solid waste. Background Art

[0002] With the development of social economy, the output of industrial solid waste has increased year by year. Industrial solid waste generally has a high content of heavy metals and cannot be directly landfilled. At the same time, some industrial solid waste contains high calorific value and can be used. Therefore, how to treat and realize the resource utilization of solid waste has become an urgent problem to be solved. At present, industrial solid waste is mainly disposed of by incineration in garbage incinerators or fluidized bed boilers coupled with coal-fired treatment. However, since industrial solid waste will inevitably bring in metal impurities such as iron wire screws when entering the furnace, it is very easy to entangle with industrial solid waste during the incineration and disposal of industrial solid waste, especially textile scraps, shoemaking scraps and rubber. Coking in fluidized bed boilers coupled with coal-fired treatment will block the air distribution plate hood and slag pipe, resulting in uneven air distribution and poor slag discharge, affecting the normal operation of the boiler. At present, there is no mature solid waste coupled incineration boiler in the industry that can realize the long-term disposal and operation of industrial solid waste, and there is no effective solution to the problem that solid waste is easily coked due to metal impurities. Therefore, for the disposal of industrial solid waste, especially organic scraps, it is urgent to develop a new disposal equipment or technical means. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems and provide a device for air separation, impurity removal and incineration disposal of industrial solid waste.

[0004] The above purpose is achieved through the following technical solutions:

[0005] An industrial solid waste air separation and incineration disposal device, which comprises: a solid waste bin, an air separator, a coal hopper, a fluidized bed incinerator, a cyclone separator, a material return device, a flue shaft, a dust collector and a chimney;

[0006] The solid waste bin is connected to the solid waste inlet at the bottom of the air separator;

[0007] The gas-solid outlet of the air separator is connected to the solid waste inlet of the lower cone section of the fluidized bed incinerator;

[0008] The flue gas outlet at the upper part of the fluidized bed incinerator is connected to the flue gas inlet of the cyclone separator. The cyclone separator is provided with a coarse ash outlet at the bottom connected to the return material inlet. The return material outlet is connected to the return material port arranged in the lower cone section of the fluidized bed incinerator.

[0009] The described air separation and impurity removal and incineration disposal device for industrial solid waste. The air separator includes a furnace wall, a feed pipe, and a waste discharge pipe. An air outlet device is arranged at the lower part of the air separator. A scraper cleaner is fixed below the air outlet device and is used to push the miscellaneous materials at the lower part of the air discharge pipe to the waste discharge pipe. The waste discharge pipe is connected to a waste falling pipe and then communicated to a miscellaneous material bin through an electromagnetic flap valve.

[0010] The described air separation and impurity removal and incineration disposal device for industrial solid waste. The air outlet device includes a blower, a plurality of air discharge pipes, a pipe rail, a circumferential support, a connecting rod, and a pushing device;

[0011] A plurality of the air discharge pipes are arranged in parallel. They are fixed by the circumferential support and the pipe rail. The end of the pipe rail is inserted into a groove of the furnace wall;

[0012] The outlet air pipe of the blower has a thick pipe wall. The two ends of each air discharge pipe are inserted into grooves of the outlet air pipe of the blower;

[0013] The circumferential support is fixed to the connecting rod. The connecting rod is fixed by the pushing end of the pushing device.

[0014] The described air separation and impurity removal and incineration disposal device for industrial solid waste. The scraper cleaner includes a hydraulic power pack, a connecting rod, and a scraper. The output end of the hydraulic power pack is fixed to the connecting rod. The end of the connecting rod is fixed to the scraper.

[0015] The described air separation and impurity removal and incineration disposal device for industrial solid waste. A plurality of round holes are opened in the upper part of the circumference of each air discharge pipe for air outlet.

[0016] The described air separation and impurity removal and incineration disposal device for industrial solid waste. The flue gas shaft has a heating surface. The flue gas entering it exchanges heat with the working medium inside the heating surface.

[0017] The described air separation and impurity removal and incineration disposal device for industrial solid waste. A dust collector and a chimney are sequentially arranged at the outlet of the flue gas shaft. The heat-exchanged flue gas is further removed of fine ash by the dust collector and then discharged into the atmosphere through the chimney.

[0018] Beneficial effects:

[0019] 1. In the present invention, air distribution is carried out by using air discharge pipes. Impurities with a larger specific gravity and larger particles directly fall through the gaps between the air discharge pipes, realizing the separation of impurities from easily combustible solid waste, and can avoid the jamming and coking caused by the winding of miscellaneous materials and corner waste during the disposal of solid waste in a fluidized bed boiler.

[0020] 2. The structural design of the air outlet pipe of the present invention and the matching furnace wall can enable the air outlet pipe to move during the air separation process, shake off the materials accumulated on the air outlet pipe, shake off the scattered miscellaneous materials near the miscellaneous material outlet, and also loosen the solid waste materials to better achieve fluidization, avoiding the occurrence of fluidization dead zones.

[0021] 3. The arrangement of the scraper cleaner of the present invention can push the miscellaneous materials to the miscellaneous material outlet, preventing the accumulation of impurities at the lower part of the air pipe after long-term operation.

[0022] 4. After the solid waste enters the air separator of the present invention, the solid waste and impurities are separated. The generated impurities are discharged from the miscellaneous material outlet provided at the bottom of the air separator, and the air carrying the solid waste from which the impurities have been removed is discharged from the gas-solid outlet provided at the upper part of the air separator. Among them, the miscellaneous material outlet is connected to the miscellaneous material dropping pipe, and then communicated to the miscellaneous material bin through the electromagnetic flap valve. The miscellaneous materials generated by the air separator enter the miscellaneous material bin through the electromagnetic flap valve, and the gas-solid outlet is connected to the solid waste inlet of the lower conical section of the fluidized bed incinerator.

[0023] 5. The flue gas generated by the fluidized bed incinerator of the present invention enters the cyclone separator, and under the action of inertia, the large-particle ash is separated, and then sent back to the fluidized bed incinerator by the return feeder for continuous incineration treatment; the relatively clean flue gas enters the flue shaft. Brief Description of the Drawings

[0024] Attached Figure 1 is a schematic structural diagram of the present invention;

[0025] Attached Figure 2 is the front view of the air separator;

[0026] Attached Figure 3 is the top view of the air outlet device;

[0027] Attached Figure 4 is the schematic structural diagram of the air outlet pipe inlet;

[0028] In the figure: 1, solid waste bin; 2, blower; 3, air separator; 4, air outlet pipe; 5, scraper cleaner; 6, miscellaneous material dropping pipe; 7, electromagnetic flap valve; 8, miscellaneous material bin; 9, coal hopper; 10, fluidized bed incinerator; 11, cyclone separator; 12, return feeder; 13, flue shaft; 14, heating surface; 15, dust collector; 16, chimney; 31, furnace wall; 32, feed pipe; 33, miscellaneous material outlet pipe; 51, hydraulic power pack; 52, connecting rod; 53, scraper; 21, outlet air pipe; 41, pipe wall; 42, pipe rail; 43, circumferential support; 44, connecting rod; 45, pushing device; 46, air outlet hole. Detailed Embodiments

[0029] Example 1:

[0030] An air separation and incineration disposal device for industrial solid waste, which comprises: a solid waste bin 1, an air separator 3, a coal hopper 9, a fluidized bed incinerator 10, a cyclone separator 11, a return feeder 12, a flue shaft 13, a dust collector 15 and a chimney 16;

[0031] The said solid waste bin is connected to the solid waste inlet at the lower part of the said air separator;

[0032] The gas-solid outlet of the said air separator is connected to the solid waste inlet at the lower conical section of the said fluidized bed incinerator;

[0033] The flue gas outlet at the upper part of the said fluidized bed incinerator is connected to the flue gas inlet of the said cyclone separator. The cyclone separator is provided with a coarse ash outlet at the bottom, which is connected to the inlet of the said return feeder. The outlet of the said return feeder is connected to the return port arranged at the lower conical section of the said fluidized bed incinerator.

[0034] Example 2:

[0035] For the air separation and incineration disposal device for industrial solid waste according to Example 1, the said air separator comprises a furnace wall 31, a feed pipe 32 and a waste discharge pipe 33. An air outlet device is arranged at the lower part of the air separator. A scraper cleaner 5 is fixed at the lower part of the air outlet device, which is used to push the miscellaneous materials at the lower part of the air outlet pipe to the waste discharge pipe. The said waste discharge pipe is connected to a waste dropping pipe 6, and then is connected to a miscellaneous material bin 8 through an electromagnetic flap valve 7.

[0036] Example 3:

[0037] For the air separation and incineration disposal device for industrial solid waste according to Example 1 or 2, the said air outlet device comprises a blower 2, a plurality of air outlet pipes 4, a pipe track 42, a circumferential support 43, a connecting rod 44 and a pushing device 45;

[0038] A plurality of the said air outlet pipes are arranged in parallel and are fixed by the said circumferential support and the said pipe track. The end of the said pipe track is inserted into the groove of the said furnace wall;

[0039] The outlet air pipe of the said blower has a thick pipe wall, and the two ends of each of the said air outlet pipes are inserted into the grooves of the outlet air pipe of the said blower;

[0040] The said circumferential support is fixed to the said connecting rod, and the connecting rod is fixed by the pushing end of the said pushing device.

[0041] Example 4:

[0042] For the air separation and incineration disposal device for industrial solid waste according to Example 1 or 2 or 3, the said scraper cleaner comprises a hydraulic power pack 51, a connecting rod 52 and a scraper 53. The output end of the said hydraulic power pack is fixed to the said connecting rod, and the end of the said connecting rod is fixed to the said scraper.

[0043] Example 5:

[0044] For the air separation and incineration disposal device of industrial solid waste according to Embodiment 1 or 2 or 3 or 4, a plurality of round holes are provided in the upper part of the circumferential direction of each air outlet pipe for air outlet.

[0045] Example 6:

[0046] For the air separation and incineration disposal device of industrial solid waste according to Embodiment 1 or 2 or 3 or 4 or 5, a heating surface 14 is provided in the flue shaft, and the flue gas entering it exchanges heat with the working medium inside the heating surface.

[0047] Example 7:

[0048] For the air separation and incineration disposal device of industrial solid waste according to Embodiment 1 or 2 or 3 or 4 or 5 or 6, a dust collector 15 and a chimney 16 are sequentially arranged at the outlet of the flue shaft, and the heat-exchanged flue gas is further removed of fine ash by the dust collector and then discharged into the atmosphere by the chimney.

[0049] The blower 2 is connected to the air inlet at the lower part of the air separator. The air separator is provided with a miscellaneous material outlet and a gas-solid outlet. After the solid waste enters the air separator, the separation of the solid waste and impurities is carried out. The generated impurities are discharged from the miscellaneous material outlet arranged at the bottom of the air separator, and the air-carrying solid waste from which impurities have been removed is discharged from the gas-solid outlet arranged at the upper part of the air separator. Among them, the miscellaneous material outlet is connected to the miscellaneous material dropping pipe, and then is communicated to the miscellaneous material bin through an electromagnetic flap valve. The miscellaneous material generated by the air separator enters the miscellaneous material bin through the electromagnetic flap valve, and the gas-solid outlet is connected to the solid waste inlet at the lower conical section of the fluidized bed incinerator.

[0050] The electromagnetic flap valve is opened irregularly. When the electromagnetic flap valve is opened, the miscellaneous material separated by the air separator enters the miscellaneous material bin through the miscellaneous material dropping pipe; when the electromagnetic flap valve is closed, the discharge of miscellaneous materials is not carried out.

[0051] A number of air outlet pipes are arranged at the lower part of the air separator. The two sides of the air outlet pipes are communicated with the air outlet pipe of the blower to realize symmetric air inlet; a number of round holes are opened in the upper part of the circumference of each air pipe as air outlet holes 46. A scraper cleaner is arranged at the lower part of the air outlet pipe, and the power pack drives the scraper to move back and forth through a connecting rod, pushing the miscellaneous material at the lower part of the air outlet pipe to the orifice of the miscellaneous material discharging pipe. Multiple scraper cleaners can be equipped in different directions according to actual needs.

[0052] The air separator furnace wall is internally provided with a cuboid-shaped groove at the interface of the outlet air duct as the moving space for the pipe track of the outlet air duct. The pushing device provides power and drives the circumferential support to move through the connecting rod, thereby enabling the overall movement of the outlet air duct. The pipe track then moves within the groove of the furnace wall while ensuring airtightness. A similar design is adopted at the joint between the blower outlet air duct and the inlet air duct of the outlet air duct 4, that is, the blower outlet air duct has a thick pipe wall, and a circular groove is provided along the circumference in the middle of the pipe wall as the moving space for the pipe wall. During the process of the power pack driving the outlet air duct to move, the corner part of the pipe wall moves within the groove of the blower outlet air duct.

[0053] The solid waste is incinerated after entering the fluidized bed, and the generated flue gas carries dust and is discharged from the flue gas outlet provided at the upper part of the fluidized bed incinerator. The flue gas generated by the fluidized bed incinerator enters the cyclone separator, and large particles of ash are separated under the action of inertia, and then are sent back to the fluidized bed incinerator by the loop seal for continued incineration treatment; the relatively clean flue gas enters the flue shaft. The flue shaft is provided with a heating surface, and the flue gas entering it exchanges heat with the working medium inside the heating surface, reducing the flue gas temperature while transferring heat. A dust collector and a chimney are sequentially arranged at the outlet of the flue shaft, and the heat-exchanged flue gas is further removed of fine ash by the dust collector and then discharged into the atmosphere through the chimney.

[0054] On the basis of adopting the above device, a crushing device is added between the outlet of the solid waste bin and the inlet of the air separator, so that the particle size specification of the solid waste when entering the furnace is smaller and the state is looser, thereby improving the air separation and impurity removal effect.

[0055] On the basis of adopting the above device, three rows of outlet air ducts are arranged at the lower part of the air separator furnace wall, and the air ducts in each row are arranged in a staggered manner, making the internal air field distribution of the air separator more uniform, thereby also improving the air separation effect.

Claims

1. A device for separating impurities from industrial solid waste by air separation and incinerating and disposing of the waste, characterized in that: It consists of: a solid waste bin, a pneumatic separator, a coal hopper, a fluidized bed incinerator, a cyclone separator, a return feeder, a flue gas shaft, a dust collector and a chimney; The said solid waste bin is connected to the solid waste inlet at the lower part of the pneumatic separator; The gas-solid outlet of the pneumatic separator is connected to the solid waste inlet at the lower conical section of the fluidized bed incinerator; The flue gas outlet at the upper part of the fluidized bed incinerator is connected to the flue gas inlet of the cyclone separator. The cyclone separator is provided with a coarse ash outlet at the bottom, which is connected to the inlet of the return feeder. The outlet of the return feeder is connected to the return port arranged at the lower conical section of the fluidized bed incinerator; The pneumatic separator includes a furnace wall, a feed pipe and a waste outlet pipe. An air outlet device is arranged at the lower part of the pneumatic separator. A scraper cleaner is fixed below the air outlet device for pushing the sundries at the lower part of the air outlet pipe into the waste outlet pipe. The waste outlet pipe is connected to a waste dropping pipe and then communicated to a sundries bin through an electromagnetic flap valve; The air outlet device includes a blower, a plurality of air outlet pipes, a pipe rail, a circumferential support, a connecting rod and a pushing device; The plurality of air outlet pipes are arranged in parallel. A number of round holes are opened in the upper part of the circumference of each air outlet pipe as air outlet holes and are fixed by the circumferential support and the pipe rail. The end of the pipe rail is inserted into the groove of the furnace wall; The outlet air pipe of the blower has a thick pipe wall, and the two ends of each air outlet pipe are inserted into the groove of the outlet air pipe of the blower; The circumferential support is fixed to the connecting rod, and the connecting rod is fixed by the pushing end of the pushing device; The scraper cleaner includes a hydraulic power pack, a connecting rod and a scraper. The output end of the hydraulic power pack is fixed to the connecting rod, and the end of the connecting rod is fixed to the scraper; 2. The air separation and impurity removal and incineration disposal device for industrial solid waste according to claim 1, wherein: The flue gas shaft has a heating surface, and the flue gas entering it exchanges heat with the working medium inside the heating surface; 3. The air separation and impurity removal and incineration disposal device for industrial solid waste according to claim 2, wherein: A dust collector and a chimney are sequentially arranged at the outlet of the flue gas shaft. The heat-exchanged flue gas is further removed of fine ash by the dust collector and then discharged into the atmosphere through the chimney.

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