CN116393492A - Device and method for reutilizing waste incineration fly ash - Google Patents

Device and method for reutilizing waste incineration fly ash Download PDF

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Publication number
CN116393492A
CN116393492A CN202310644317.8A CN202310644317A CN116393492A CN 116393492 A CN116393492 A CN 116393492A CN 202310644317 A CN202310644317 A CN 202310644317A CN 116393492 A CN116393492 A CN 116393492A
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China
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fly ash
ash
calciner
waste incineration
groups
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CN202310644317.8A
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CN116393492B (en
Inventor
任成茂
韩晓强
高忠超
赵良
李贺
张国亮
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Beijing Hongjie Lantian Technology Co ltd
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Beijing Hongjie Lantian Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/38Stirring or kneading
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/40Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B2101/00Type of solid waste
    • B09B2101/30Incineration ashes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to the field of waste incineration fly ash treatment, and discloses a waste incineration fly ash secondary utilization device and a waste incineration fly ash secondary utilization method. The invention relates to a waste incineration fly ash secondary utilization device and a method thereof, wherein hot air flow is generated in a hot air supply box, is guided out from each group of air inlet pipes, is injected into a blowing ring seat, continuously blows air downwards along the inner wall of a centrifugal washing cylinder from an air outlet, gradually dries wet fly ash, falls off from a permeable membrane, is injected into a receiving hopper along with the hot air flow, and is continuously transferred to an inclined material guide channel, wherein the hot air has a drying effect on one hand, has a material transferring effect on the other hand, is suitable for different working conditions, and brings better use prospect.

Description

Device and method for reutilizing waste incineration fly ash
Technical Field
The invention relates to the field of treatment of waste incineration fly ash, in particular to a waste incineration fly ash secondary utilization device and a waste incineration fly ash secondary utilization method.
Background
At present, the disposal mode of the waste incineration fly ash mainly comprises the following steps: the fly ash contains benzene series, dioxin and other organic pollutants and Pb, cr and other trace heavy metals, and is classified as dangerous waste (code HW 18) by various countries in the world, and special treatment is needed, but in China, the fly ash treatment is in a relatively single treatment mode at present.
Landfill limitations: the household garbage landfill is designed for landfill of household garbage, and the fly ash after chelation and solidification is essentially different from the household garbage. Because of the large amount of construction of the waste incineration plants, fly ash disposal becomes an urgent need, and the household garbage landfill becomes a main place for the household garbage landfill; meanwhile, the domestic refuse landfill in China has the problems of early construction, management shortage and the like, the received fly ash definitely improves the requirement on environmental supervision, the fly ash does not enter the landfill site for landfill, and the resource utilization is a long-term way.
Limitations of cement kiln co-treatment: the cement kiln co-treatment of the waste incineration fly ash refers to that the pretreated fly ash is taken as a raw material to be added into a cement production process, so that organic pollutants such as dioxin and the like enriched in the fly ash are effectively removed while partial cement raw materials are replaced, and the recycling treatment of the fly ash is realized; however, since fly ash contains a large amount of Cl-and heavy metal elements, it is necessary to pretreat the fly ash in order to avoid affecting the cement production process, and thus secondary utilization equipment for dechlorination and calcination of fly ash is required.
The existing related equipment for chlorine removal and calcination has the following technical defects that firstly, in the chlorine removal process, fly ash is mainly washed and mixed, and then the generated chlorine-containing salt water is separated, the process is separately carried out, and the operation is carried out by different devices, so that the operation is more complicated and the working efficiency is low; secondly, after the fly ash is dried, the fly ash is required to be uniformly collected and then transferred into a calciner, so that the lifting is complicated and the working efficiency is low; the third fly ash is easy to accumulate in the calciner, so that the upper part and the bottom of the piled layer are heated unevenly to influence the calcination effect, and the fly ash is easy to accumulate on the furnace wall and is difficult to remove to influence the normal discharging of the fly ash.
Therefore, we propose a device and a method for reutilizing the fly ash of the waste incineration.
Disclosure of Invention
The invention mainly aims to provide a device and a method for reutilizing waste incineration fly ash, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a waste incineration fly ash secondary utilization device and method thereof, includes the washing case, the inside rotation of washing case is provided with centrifugal washing section of thick bamboo, the outside a week of centrifugal washing section of thick bamboo is provided with outer fixing base, outer fixing base includes upper annular spacing shell and lower annular spacing shell.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the center of the upper end face of the washing tank is fixedly provided with a connecting table, and the center of the connecting table is vertically provided with a first motor.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the anti-sedimentation stirrer is arranged at the lower end of the first motor and extends into the centrifugal washing cylinder.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the bottom of the washing tank and under the centrifugal washing cylinder is provided with a receiving hopper which is communicated with a fly ash calciner through an inclined guide channel, and the fly ash calciner comprises a fly ash raising structure.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the centrifugal washing cylinder comprises a flange, a net rack, a mixing part, a large gear, a permeable membrane and a discharging disc, wherein the net rack is positioned between the flange and the mixing part, the permeable membrane is glued on the inner side of the net rack in a circle, the flange is positioned in an upper annular limiting shell, the mixing part is positioned in a lower annular limiting shell, the large gear is sleeved on the outer side of the mixing part, and the discharging disc is positioned at the bottom of the mixing part and is driven to turn by a hydraulic switch.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the anti-sedimentation stirrer comprises a rotating rod, a limiting shaft sleeve, a connecting rod, a welding seat and a brush rod, wherein the rotating rod extends to the bottom of a centrifugal washing cylinder from the lower end of a first motor, the limiting shaft sleeve is sleeved at the upper position of the rotating rod, a plurality of groups of connecting rods are welded outside the shaft sleeve, the preferential quantity of the connecting rods is 2-4 groups, the connecting rods are riveted with the bottom of a connecting table, the bottom of the connecting rod is provided with the welding seat, two groups of brush rods are symmetrically and horizontally connected on the welding seat, and a plurality of groups of steel wires are uniformly distributed at the bottom of the brush rod.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the upper end of outer fixing base is provided with interior seat that props, the inboard annular a week of interior seat that props has set up the jetting ring seat, the bottom of jetting ring seat is provided with the air outlet, the inner wall of air outlet and centrifugal washing section of thick bamboo is in the parallel and level state, jetting ring seat upper end intercommunication is provided with a plurality of groups air-supply line, the preferred quantity of air-supply line is 4-6 groups, and hot-blast supply box is located the upper end of air-supply line, be provided with the air heater in the hot-blast supply box.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the fly ash calciner comprises side supports, semicircular supports, a calciner, a combustor, a fuel tank and distribution pipes, wherein the two groups of side supports are symmetrically arranged on two sides of the calciner, the semicircular supports are wrapped at the bottom of the calciner and are fixed with the inner sides of the two groups of side supports, the fuel tank is positioned at the upper end of the calciner and comprises the combustor, the distribution pipes are symmetrically arranged on two sides of the fuel tank, the quantity of the distribution pipes is preferably 5-10 groups, and the distribution pipes extend into the calciner and are positioned at the upper half part of the calciner.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the calciner includes furnace body, rectangle feed channel, annular joint, guiding groove, flue gas filter screen, pipe cassette, row's material door and second motor, the left end face of furnace body is provided with rectangle feed channel by the upper position, rectangle feed channel passes through annular joint and oblique guide channel connection, the inside guiding groove that includes of annular joint, the bilateral symmetry of furnace body is provided with the pipe cassette that a plurality of groups acted on the cloth pipe, the bottom activity of furnace body is provided with row's material door, the second motor is installed to the right-hand member face center of furnace body outside position.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the flue gas filter screen is located the rectangle feed channel, and when the flue gas filter screen was in vertical state, just the shutoff rectangle feed channel, rectangle feed channel up end is provided with the exhaust groove, and when the flue gas filter screen was turned over from vertical state to the horizontality, just the shutoff exhaust groove.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the calcining furnace comprises a rotating roller, a bearing seat, swing rods and an ash lifting shovel, wherein the rotating roller is connected with a second motor through a coupler, the rotating roller is horizontally arranged at the center of the inside of the furnace body, the other end of the rotating roller is fixed with the inner wall of the furnace body through the bearing seat, two rows of swing rods are symmetrically welded on the outer side of the rotating roller, a plurality of groups of swing rods are distributed at equal intervals in each row, the optimal number of the swing rods is 4, the ash lifting shovel is welded at the end part of the swing rods, and the ash lifting shovel is attached to the inner wall of the furnace body to move in an annular mode.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the ash shovel comprises an ash storage chamber, a curved shovel plate and ash scattering holes, wherein the ash storage chamber is positioned in the ash shovel, the section of the ash storage chamber is in an inverted trapezoid shape, the curved shovel plate is positioned at the bottom of the ash shovel, the curvature of the curved shovel plate is consistent with that of a curved wall of a furnace body, and a plurality of groups of ash scattering holes are uniformly distributed on the upper end face of the ash shovel.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the second motor penetrates through the side support, and a motor shell is arranged on the outer side of the second motor.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the left side meshing of gear wheel is provided with the pinion, the pinion is located the gear shaft, the gear shaft is connected with the third motor of bottom, the vertical bottom at the washing case of fixing of third motor, the pinion stretches into in the lower annular spacing shell.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the connecting table is provided with a feeding hopper, and an outlet at the lower end of the feeding hopper is communicated with the centrifugal washing cylinder.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the connecting table is used for enabling a plurality of groups of air inlet pipes to pass through.
As a preferable scheme of the garbage incineration fly ash secondary utilization device and the method thereof, the invention comprises the following steps: the position of the inner side of the outer fixing seat, which corresponds to the net rack, is provided with a liquid receiving tank, and the liquid receiving tank discharges chlorine-containing brine to the outside through a conduit.
A secondary utilization method of waste incineration fly ash comprises the following steps:
s1, stirring and mixing: the method comprises the steps of firstly throwing incineration fly ash and water in a certain proportion from a feeding hopper, entering a mixing part of a centrifugal washing barrel after falling, then starting a first motor, rotating an anti-sedimentation stirrer, fully mixing the fly ash and the water by utilizing high-speed movement of two groups of brush rods, and continuously cleaning the bottom of the centrifugal washing barrel by utilizing a plurality of groups of steel wires at the bottom of the brush rods.
S2, centrifugally separating chlorine water: stopping stirring, starting the third motor, driving the pinion to rotate, enabling the large gear to drive the centrifugal washing cylinder to do high-speed centrifugal motion, enabling the mixed liquid of the mixing part to move upwards in an adherence manner in the motion process, enabling the solution to pass through the permeable membrane, and throwing out the solution outwards to be collected.
S3, drying fly ash: stopping centrifugal movement, at this time, restarting the air heater, synchronously opening the discharge tray at the bottom, generating hot air flow in the hot air supply box, guiding out from each group of air inlet pipes, injecting into the injection ring seat, continuously blowing downwards along the inner wall of the centrifugal washing barrel from the air outlet, gradually airing the wet fly ash, and falling off from the permeable membrane.
S4, fly ash transfer: the fly ash falling off from the permeable membrane is injected into the receiving hopper along with the hot air flow, then continuously transferred to the inclined material guide channel, and finally transported into the fly ash calciner;
s5, calcining the fly ash: when the fly ash in the water washing tank is completely transferred into the furnace body, the flue gas filter screen is turned over from a horizontal state to a vertical state, at the moment, the burner is started, high temperature of 800-1300 ℃ is generated through the point positions in the furnace of a plurality of groups of material distribution pipes, and the fly ash is calcined.
S6, ash lifting and flue gas filtration: when the second motor is started to drive the rotating roller to rotate, a plurality of groups of ash lifting shovels on the rotating roller are utilized to lift fly ash when moving to the bottom of the furnace body, the fly ash is led into the ash storage chamber and moves upwards in a ring shape, when approaching to the inner side of the top of the furnace body, the fly ash overflows outwards from ash scattering holes, irregularly moves in a high-temperature area at the upper part of the furnace body, is fully calcined, and is circulated to lift ash in this way, finally cement clinker is formed, the cement clinker is discharged from the discharge door, and harmful gas and dust are filtered when generated flue gas passes through the flue gas filter screen and are discharged from the exhaust groove.
Compared with the prior art, the invention provides a garbage incineration fly ash secondary utilization device and a garbage incineration fly ash secondary utilization method by improving the device, which have the following remarkable improvements and advantages:
the centrifugal washing drum is designed, the first motor is started, the sedimentation-preventing stirrer rotates, the two groups of brush rods are utilized to move at a high speed to fully mix fly ash and water, meanwhile, a plurality of groups of steel wires at the bottom of the brush rods are utilized to continuously clean the bottom of the centrifugal washing drum, chlorine element substances in the fly ash are fully dissolved in the water to form saline water, the stirring is stopped, the third motor is started to drive the pinion to rotate, the large gear drives the centrifugal washing drum to do high-speed centrifugal movement, in the movement process, the mixed solution of the mixing part moves upwards to cling to the wall, the solution is thrown outwards from the permeable membrane, the rest fly ash components are adhered to the inner side surface of the permeable membrane, the liquid is completely separated, the centrifugal washing drum has the functions of integrating the steps of mixing washing and separating chlorine water into a whole, and the two functions have the sequential and no butt joint technical barriers, so that the technical problems of complex operation and low working efficiency in the whole process are solved, and the construction cost is also reduced.
When the anti-sedimentation stirrer is used for operation, on one hand, the stirring can be uniform, chlorine substances are fully dissolved in water, and on the other hand, a plurality of groups of steel wires at the bottom of the brush rod are used for continuously cleaning the bottom of the centrifugal washing cylinder, so that fly ash is prevented from being quickly deposited at the bottom of the cylinder to form a sludge, and therefore, the anti-sedimentation stirring device has a cleaning effect and improves the absorption rate of chlorine elements.
The hot air supply box generates hot air flow, the hot air flow is led out from each group of air inlet pipes and is injected into the injection ring seat, and the air is continuously blown downwards along the inner wall of the centrifugal washing barrel from the air outlet, so that wet fly ash is gradually air-dried and falls off from the permeable membrane, and is continuously transferred to the inclined material guide channel after being injected into the material receiving hopper along with the hot air flow, and the hot air in the process plays a drying role on one hand and plays a role in transferring material transportation on the other hand, thereby solving the technical problems of complex operation and low working efficiency in the whole process and synchronously solving two technical problems.
When the second motor is started to drive the rotating roller to rotate, a plurality of groups of ash lifting shovels on the rotating roller are utilized to lift fly ash when moving to the bottom of the furnace body, the fly ash is led into the ash storage chamber and moves upwards in a ring shape, when approaching to the inner side of the top of the furnace body, the fly ash overflows outwards from the ash scattering holes, irregularly moves in a high-temperature area at the upper part of the furnace body, is fully calcined, and is circulated to lift ash in this way, finally cement clinker is formed, in the process, on one hand, the fly ash is continuously lifted by the ash lifting shovels, so that the fly ash is uniformly heated, the calcining effect is improved, on the other hand, the curved shovels are attached to the furnace wall to move, thereby cleaning ash layers stuck on the furnace wall, achieving the effect of cleaning, facilitating the discharging of the fly ash, and synchronously solving two technical problems.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a waste incineration fly ash secondary utilization device and a method thereof;
FIG. 2 is a specific external construction view of the washing tank of the present invention;
FIG. 3 is an internal structural view of the washing tank of the present invention;
FIG. 4 is an external structural view of the centrifugal washing cartridge of the present invention;
FIG. 5 is a disassembled view of the outer holder of the present invention;
FIG. 6 is an internal structural view of the centrifugal washing cartridge of the present invention;
FIG. 7 is a relative position of the injection ring seat of the present invention;
FIG. 8 is an external block diagram of the fly ash calciner of the present invention;
FIG. 9 is a view of the connection of the fly ash calciner and the receiving hopper of the present invention;
FIG. 10 is an external structural view of the calciner of the present invention;
fig. 11 is a detailed view of the ash lifting structure of the present invention.
In the figure: 1. a washing tank; 2. an outer fixing seat; 201. an upper annular limiting shell; 202. a lower annular limit housing; 3. a connection station; 4. a first motor; 5. a rotating rod; 6. a limiting shaft sleeve; 7. a connecting rod; 8. centrifuging the washing cylinder; 81. a flange; 82. a net rack; 83. a mixing section; 84. a large gear; 85. a permeable membrane; 86. a discharge tray; 9. a fly ash calciner; 91. a side support; 92. a semicircular support; 93. a calciner; 94. a burner; 95. a fuel tank; 96. a material distribution pipe; 10. a welding seat; 11. a brush bar; 12. an inner support seat; 13. a blowing ring seat; 14. an air outlet; 15. an air inlet pipe; 16. a hot air supply box; 17. an air heater; 18. a receiving hopper; 19. an inclined guide channel; 20. a furnace body; 21. a rectangular feed channel; 22. an annular joint; 23. a guide groove; 24. a flue gas filter screen; 25. a tube clamping seat; 26. a discharge gate; 27. a second motor; 28. a rotating roller; 29. a bearing seat; 30. swing rod; 31. a fly ash shovel; 32. an ash storage chamber; 33. a curved shovel plate; 34. scattering ash holes; 35. a motor housing; 36. a pinion gear; 37. a gear shaft; 38. a third motor; 39. and (5) a charging hopper.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1-7, the embodiment provides a device and a method for reutilizing fly ash from garbage incineration, which comprises a washing tank 1, wherein a centrifugal washing cylinder 8 is rotatably arranged in the washing tank 1, an outer fixing seat 2 is arranged on the outer side of the centrifugal washing cylinder 8 in a circle, and the outer fixing seat 2 comprises an upper annular limiting shell 201 and a lower annular limiting shell 202.
Specifically, the centrifugal washing cartridge 8 includes a flange 81, a net mount 82, a mixing section 83, a large gear 84, a permeable membrane 85, and a discharge tray 86, as shown in fig. 4.
In this embodiment, the net rack 82 is located between the flange 81 and the mixing portion 83, a permeable membrane 85 is glued on the inner side of the net rack 82, the net rack 82 plays a supporting and fixing role, and the permeable membrane 85 is used for liquid permeation.
In this embodiment, the flange 81 is located in the upper annular limiting shell 201, the mixing portion 83 is located in the lower annular limiting shell 202, the large gear 84 is sleeved on the outer side of the mixing portion 83, the discharging plate 86 is located at the bottom of the mixing portion 83, and is driven to turn by the hydraulic switch, and turns downwards by 90 degrees.
In this embodiment, the left side of the large gear 84 is engaged with a small gear 36, the small gear 36 is located on a gear shaft 37, the gear shaft 37 is connected with a third motor 38 at the bottom, the third motor 38 is vertically fixed at the bottom of the washing tank 1, and the small gear 36 extends into a lower annular limiting shell 202, as shown in fig. 3.
Further, a connecting table 3 is fixedly arranged at the center of the upper end face of the washing tank 1, and a first motor 4 is vertically arranged at the center of the connecting table 3.
Further, an anti-sedimentation stirrer is arranged at the lower end of the first motor 4 and extends into the centrifugal washing drum 8.
Specifically, the anti-deposition stirrer comprises a rotating rod 5, a limiting shaft sleeve 6, a connecting rod 7, a welding seat 10 and a brush rod 11, as shown in fig. 6.
In this embodiment, bull stick 5 extends to centrifugal washing section of thick bamboo 8 bottom by first motor 4 lower extreme, and spacing axle sleeve 6 cup joints the position in bull stick 5, and spacing axle sleeve 6 outside welding has a plurality of groups connecting rod 7, and the bottom riveting of connecting rod 7 and connecting bench 3 plays the fixed action, and the bottom of connecting rod 7 is provided with welded seat 10, and symmetrical horizontal connection has two sets of brush-holder stud 11 on the welded seat 10, and brush-holder stud 11 bottom evenly distributed has a plurality of steel wires, is the soft steel wire, has the effect of cleaning.
Further, the upper end of the outer fixing seat 2 is provided with an inner supporting seat 12 which plays a role in supporting connection, and a blowing ring seat 13 is arranged on the inner side of the inner supporting seat 12 in a circle.
In this embodiment, an air outlet 14 is arranged at the bottom of the blowing ring seat 13, the air outlet 14 is downward, the air outlet 14 and the inner wall of the centrifugal washing drum 8 are in a flush state, no blocking is caused during blowing, and a plurality of groups of air inlet pipes 15 are arranged at the upper end of the blowing ring seat 13 in a communicating manner, as shown in fig. 7; the connecting table 3 is provided with a plurality of groups of air inlet pipes 15 penetrating through, a hot air supply box 16 is positioned at the upper end of the air inlet pipes 15, and a hot air blower 17 is arranged in the hot air supply box 16.
Further, a receiving hopper 18 is arranged at the bottom of the washing tank 1 and right below the centrifugal washing cylinder 8, the receiving hopper 18 is communicated with the fly ash calciner 9 through an inclined material guide channel 19, and the inclined material guide channel 19 is obliquely arranged, so that material guide is facilitated.
Further, a feeding hopper 39 is arranged on the connecting table 3, and an outlet at the lower end of the feeding hopper 39 is communicated with the centrifugal washing cylinder 8.
Further, a liquid receiving tank is arranged at the inner side of the outer fixing seat 2 corresponding to the net rack 82, the liquid receiving tank has the function of splashing prevention and liquid receiving, chlorine-containing brine is discharged to the outside through a conduit by the liquid receiving tank, and the subsequent treatment of the brine does not belong to the technical gist of the invention.
When the device is used, a certain proportion of incineration fly ash and water are firstly thrown into the feeding hopper 39, fall and enter the mixing part 83 of the centrifugal washing drum 8, then the first motor 4 is started, the anti-sedimentation stirrer rotates, the fly ash and the water are fully mixed by utilizing the high-speed movement of the two groups of brush rods 11, meanwhile, the bottom of the centrifugal washing drum 8 is continuously cleaned by utilizing the plurality of groups of steel wires at the bottom of the brush rods 11, the fly ash deposition and insufficient absorption of chlorine elements are prevented, chlorine elements in the fly ash are fully dissolved in the water to form salt water, the stirring is stopped, the third motor 38 is driven to rotate, the pinion 36 is driven to enable the large gear 84 to drive the centrifugal washing drum 8 to perform high-speed centrifugal movement, in the movement process, the mixed liquid of the mixing part 83 is upwards adhered to the position of the permeable membrane 85, the solution passes through the permeable membrane 85 and is thrown outwards, the rest fly ash components are adhered to the inner side surface of the permeable membrane 85, the liquid is completely separated, the centrifugal movement is stopped, the fan 17 is restarted (the bottom hot air disc 86 is synchronously opened), the discharge box 16 is fully dissolved in the water to form salt water, the salt water is stopped, the third motor 38 is driven to rotate, the large gear 84 is driven to drive the centrifugal washing drum 8 to perform high-speed centrifugal movement, the mixed liquid is upwards adhered to the permeable membrane 85, the movement is enabled to pass through the permeable membrane 85, the rest through the permeable membrane, the inner side of the permeable membrane 85, the liquid is continuously and the inner air-cooled by the inner air, the inner air carrier and the air is continuously and the air-cooled by the air carrier and the air, and the air flow is continuously and the air-cooled by the air through the air carrier and the air drum 18, and the air drum 18.
Examples
On the basis of the first embodiment, since the fly ash is easily accumulated in the calciner, the upper part and the bottom of the piled layer are heated at uneven temperature, the calcination effect is affected, the fly ash is easily accumulated on the furnace wall, the fly ash is difficult to remove, and the normal discharging of the fly ash is affected, for this reason, a fly ash raising structure is arranged in the fly ash calciner 9, as shown in fig. 8-11.
Specifically, the fly ash calciner 9 includes a side support 91, a semicircular support 92, a calciner 93, a burner 94, a fuel tank 95, and a distribution pipe 96, as shown in fig. 8.
In this embodiment, the side support 91 is symmetrically arranged on two sides of the calciner 93, the semicircular support 92 wraps the bottom of the calciner 93 and is fixed with the inner side surfaces of the two sets of side supports 91, so as to play a supporting role, and a plurality of layers of heat insulation materials are arranged on the surface of the calciner 93.
In this embodiment, the fuel tank 95 is located at the upper end of the calciner 93, the fuel tank 95 includes a burner 94, two sides of the fuel tank 95 are symmetrically provided with a plurality of groups of material distribution pipes 96, and the material distribution pipes 96 extend into the calciner 93 and are located at the upper half of the calciner 93.
Further, the calciner 93 includes a furnace body 20, a rectangular feed channel 21, an annular joint 22, a guide groove 23, a flue gas filter screen 24, a pipe holder 25, a discharge gate 26, and a second motor 27, as shown in fig. 10.
Specifically, the left end face of the furnace body 20 is provided with a rectangular feeding channel 21 near the upper position, the rectangular feeding channel 21 is connected with the inclined material guiding channel 19 through an annular connector 22, the inside of the annular connector 22 comprises a guiding groove 23, the guiding groove 23 is used for centralizing material guiding, two sides of the furnace body 20 are symmetrically provided with a plurality of groups of tube clamping seats 25 acting on a material distribution tube 96 to play a role in connection and fixation, the bottom of the furnace body 20 is movably provided with a material discharging door 26 to play a role in discharging, and a second motor 27 is installed near the outer position of the center of the right end face of the furnace body 20.
Further, the flue gas filter screen 24 is located in the rectangular feeding channel 21, when the flue gas filter screen 24 is in a vertical state, the rectangular feeding channel 21 is just plugged, a filtering effect is achieved, an exhaust groove is formed in the upper end face of the rectangular feeding channel 21, when the flue gas filter screen 24 is turned from the vertical state to the horizontal state, the exhaust groove is just plugged, a dust overflow preventing effect is achieved, and therefore the flue gas filter screen 24 has different functions in different working states.
Specifically, the calciner 93 is provided with a dust-raising structure, which includes a roller 28, a bearing seat 29, a swing link 30, and a dust-raising shovel 31, as shown in fig. 11.
In this embodiment, the rotary roller 28 and the second motor 27 are connected through a coupling, the rotary roller 28 is horizontally disposed at the center position inside the furnace body 20, and the other end of the rotary roller 28 is fixed to the inner wall of the furnace body 20 through a bearing seat 29.
In this embodiment, two rows of swing rods 30 are symmetrically welded on the outer side of the rotating roller 28, a plurality of groups of swing rods 30 are distributed on each row at equal intervals, a dust-lifting shovel 31 is welded on the end part of each swing rod 30, and the dust-lifting shovel 31 is attached to the inner wall of the furnace body 20 to move circularly.
Specifically, the fly ash blade 31 includes an ash storage chamber 32, a curved blade 33, and an ash spreading hole 34, as shown in fig. 11.
In this embodiment, the ash storage chamber 32 is located inside the ash shovel 31, the cross section is inverted trapezoid, the collection of material is facilitated, the curved shovel plate 33 is located at the bottom of the ash shovel 31, the curvature is consistent with the curvature of the curved wall of the furnace body 20, the ash shoveling is facilitated, the annular movement of the ash shovel 31 is not disturbed, and a plurality of groups of ash scattering holes 34 are uniformly distributed on the upper end face of the ash shovel 31.
Further, the second motor 27 penetrates the side mount 91, and a motor case 35 is provided outside the second motor 27.
When the embodiment is used, after the fly ash in the water washing tank 1 is completely transferred into the furnace body 20, the flue gas filter screen 24 is turned over from a horizontal state to a vertical state, at the moment, the burner 94 is started, high temperature of 800-1300 ℃ is generated through the furnace inner point positions of the plurality of groups of material distribution pipes 96, the second motor 27 is started, the rotating roller 28 is driven to rotate, when the plurality of groups of ash lifting shovels 31 on the rotating roller 28 move to the bottom of the furnace body 20, the curved shovels 33 are utilized to lift the fly ash, the fly ash is led into the ash storage chamber 32, then the fly ash moves upwards in a circular way, when approaching to the inner side of the top of the furnace body 20, the fly ash overflows outwards from the ash scattering holes 34 (at the moment, the ash scattering holes 34 are positioned on the lower end face of the ash lifting shovels 31), the fly ash is irregularly moved in the upper high temperature area in the furnace body 20, the fly ash is fully calcined, the fly ash is circulated, cement clinker is finally formed, the fly ash is discharged from the discharge gate 26, the aim of secondary utilization is achieved, and the generated flue gas is filtered when the flue gas passes through the filter screen 24.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a waste incineration flying ash reutilization device, includes washing case (1), its characterized in that: the inside of the water washing box (1) is rotatably provided with a centrifugal water washing cylinder (8), an outer fixing seat (2) is arranged on the outer periphery of the centrifugal water washing cylinder (8), and the outer fixing seat (2) comprises an upper annular limiting shell (201) and a lower annular limiting shell (202);
a connecting table (3) is fixedly arranged at the center of the upper end surface of the water washing tank (1), a first motor (4) is vertically arranged at the center of the connecting table (3), a deposition-preventing stirrer is arranged at the lower end of the first motor (4), and the deposition-preventing stirrer stretches into a centrifugal water washing barrel (8);
the bottom of the water washing tank (1) is provided with a receiving hopper (18) which is positioned under the centrifugal water washing cylinder (8), the receiving hopper (18) is communicated with the fly ash calciner (9) through an inclined guide channel (19), and the fly ash calciner (9) comprises a dust raising structure.
2. The waste incineration fly ash reutilization device according to claim 1, wherein: centrifugal washing section of thick bamboo (8) include flange (81), rack (82), mixed portion (83), gear wheel (84), osmotic membrane (85) and discharge disc (86), rack (82) are located between flange (81) and mixed portion (83), the inboard a week of rack (82) is glued and is had osmotic membrane (85), flange (81) are located annular spacing shell (201) down, mixed portion (83) are located annular spacing shell (202), gear wheel (84) have been cup jointed in the mixed portion (83) outside, discharge disc (86) are located the bottom of mixed portion (83).
3. The waste incineration fly ash reutilization device according to claim 2, characterized in that: the anti-sedimentation stirrer comprises a rotating rod (5), a limiting shaft sleeve (6), a connecting rod (7), a welding seat (10) and a brush rod (11), wherein the rotating rod (5) extends to the bottom of a centrifugal washing drum (8) from the lower end of a first motor (4), the limiting shaft sleeve (6) is sleeved at the upper position of the rotating rod (5), a plurality of groups of connecting rods (7) are welded outside the limiting shaft sleeve (6), the connecting rods (7) are riveted with the bottom of a connecting table (3), the welding seat (10) is arranged at the bottom of the connecting rods (7), two groups of brush rods (11) are symmetrically and horizontally connected to the welding seat (10), and a plurality of groups of steel wires are uniformly distributed at the bottom of the brush rod (11).
4. A waste incineration fly ash secondary utilization device according to claim 3, characterized in that: the upper end of outer fixing base (2) is provided with interior seat (12) that props, the inboard annular a week of interior seat (12) of propping has set up jetting ring seat (13), the bottom of jetting ring seat (13) is provided with air outlet (14), the inner wall of air outlet (14) and centrifugal washing section of thick bamboo (8) is in the parallel and level state, jetting ring seat (13) upper end intercommunication is provided with a plurality of groups air-supply line (15), and hot-blast supply box (16) are located the upper end of air-supply line (15).
5. The waste incineration fly ash reutilization device according to claim 4, wherein: the fly ash calciner (9) comprises side supports (91), semicircular supports (92), a calciner (93), a combustor (94), a fuel tank (95) and distribution pipes (96), wherein the two groups of side supports (91) are symmetrically arranged on two sides of the calciner (93), the semicircular supports (92) are wrapped at the bottom of the calciner (93) and are fixed with the inner side surfaces of the two groups of side supports (91), the fuel tank (95) is located at the upper end of the calciner (93), the combustor (94) is arranged in the fuel tank (95), the two groups of distribution pipes (96) are symmetrically arranged on two sides of the fuel tank (95), and the distribution pipes (96) extend into the calciner (93) and are located at the upper half part of the calciner (93).
6. The waste incineration fly ash reutilization device according to claim 5, wherein: the calciner (93) is including furnace body (20), rectangle feed channel (21), annular joint (22), guide slot (23), flue gas filter screen (24), pipe cassette (25), discharge door (26) and second motor (27), the left end face of furnace body (20) is provided with rectangle feed channel (21) by the upper position, rectangle feed channel (21) are connected through annular joint (22) and oblique guide channel (19), the bilateral symmetry of furnace body (20) is provided with pipe cassette (25) that a plurality of groups acted on cloth pipe (96), the bottom activity of furnace body (20) is provided with discharge door (26), second motor (27) are installed to the right-hand member face center of furnace body (20) outside position.
7. The waste incineration fly ash reutilization device according to claim 6, wherein: the flue gas filter screen (24) is located in the rectangular feeding channel (21), when the flue gas filter screen (24) is in a vertical state, the rectangular feeding channel (21) is just plugged, an exhaust groove is formed in the upper end face of the rectangular feeding channel (21), and when the flue gas filter screen (24) is turned over from the vertical state to the horizontal state, the exhaust groove is just plugged.
8. The waste incineration fly ash reutilization device according to claim 7, wherein: the utility model provides a calciner (93) is interior to be provided with ash raising structure, including commentaries on classics roller (28), bearing frame (29), pendulum rod (30) and ash raising shovel (31), commentaries on classics roller (28) and second motor (27) pass through the coupling joint, commentaries on classics roller (28) level sets up the inside central point of furnace body (20), the other end of commentaries on classics roller (28) is fixed through bearing frame (29) and the inner wall of furnace body (20), the outside symmetry welding of commentaries on classics roller (28) is provided with two rows of pendulum rods (30), and every row equidistance distributes has a plurality of pendulum rods (30), the tip welding of pendulum rod (30) has ash raising shovel (31), the inner wall annular motion of ash raising shovel (31) laminating furnace body (20).
9. The waste incineration fly ash reutilization device according to claim 8, wherein: the ash lifting shovel (31) comprises an ash storage chamber (32), a curved shovel plate (33) and ash scattering holes (34), wherein the ash storage chamber (32) is located inside the ash lifting shovel (31), the section of the ash storage chamber is in an inverted trapezoid shape, the curved shovel plate (33) is located at the bottom of the ash lifting shovel (31), and a plurality of groups of ash scattering holes (34) are uniformly distributed on the upper end face of the ash lifting shovel (31).
10. A method for reutilizing waste incineration fly ash, applied to a device for reutilizing waste incineration fly ash according to any one of claims 1 to 9, comprising the steps of:
s1, stirring and mixing: firstly, throwing required incineration fly ash and water from a throwing hopper (39), entering a mixing part (83) of a centrifugal washing barrel (8) after falling, then starting a first motor (4), preventing a sedimentation stirrer from rotating, fully mixing the fly ash and the water by utilizing high-speed movement of two groups of brush rods (11), and continuously cleaning the bottom of the centrifugal washing barrel (8) by utilizing a plurality of groups of steel wires at the bottom of the brush rods (11);
s2, centrifugally separating chlorine water: stopping stirring, starting a third motor (38), driving a pinion (36) to rotate, enabling a large gear (84) to drive a centrifugal washing cylinder (8) to perform high-speed centrifugal motion, enabling mixed liquid of a mixing part (83) to move upwards in an adherence manner in the motion process, enabling the solution to pass through a permeable membrane (85), and throwing out outwards to be collected;
s3, drying fly ash: stopping centrifugal movement, at the moment, restarting the air heater (17), synchronously opening a discharging disc (86) at the bottom, generating hot air flow in a hot air supply box (16), guiding out from each group of air inlet pipes (15), injecting into the injection ring seat (13), continuously blowing downwards along the inner wall of the centrifugal washing barrel (8) from the air outlet (14), and gradually airing wet fly ash and falling off from the permeable membrane (85);
s4, fly ash transfer: the fly ash falling off from the permeable membrane (85) is injected into the receiving hopper (18) along with the hot air flow, and then continuously transferred to the inclined guide channel (19), and finally transported into the fly ash calciner (9);
s5, calcining the fly ash: when the fly ash in the water washing tank (1) is completely transferred into the furnace body (20), the flue gas filter screen (24) is turned over (90) from a horizontal state to a vertical state, a burner (94) is started at the moment, high temperature of 800-1300 ℃ is generated through the point positions in the furnace of a plurality of groups of material distribution pipes (96), and the fly ash is calcined;
s6, ash lifting and flue gas filtration: when the second motor (27) is started to drive the rotary roller (28) to rotate, a plurality of groups of ash lifting shovels (31) on the rotary roller (28) are used for lifting fly ash to the bottom of the furnace body (20), the fly ash is led into the ash storage chamber (32) and then moves upwards in a ring shape, when the fly ash approaches the inner side of the top of the furnace body (20), the fly ash overflows outwards from ash scattering holes (34), and irregularly moves in the upper high-temperature area of the furnace body (20), is fully calcined, so ash is lifted circularly, cement clinker is finally formed, the cement clinker is discharged from the discharge door (26), and harmful gas and dust are filtered when the generated flue gas passes through the flue gas filter screen (24) and are discharged from the exhaust groove.
CN202310644317.8A 2023-06-02 2023-06-02 Device and method for reutilizing waste incineration fly ash Active CN116393492B (en)

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CN117948809B (en) * 2024-03-22 2024-05-28 常州市龙城粉体设备有限公司 Cleaning device for calciner

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