A waste incineration fly ash treatment device and treatment method

Abstract

The application relates to a household garbage incineration fly ash treatment device and method, and relates to the technical field of fly ash treatment devices. The treatment device comprises a treatment frame body, a spraying unit, a receiving unit, a receiving support, a driving assembly and a plurality of receiving cylinders arranged along the circumference of the receiving support. The plurality of receiving cylinders are rotatably installed on the receiving support by the driving assembly. In a first state, the driving assembly drives the plurality of receiving cylinders to move along the receiving support. In a second state, the driving assembly drives the plurality of receiving cylinders to rotate around their own axes. An adding unit is arranged to add a solvent into the receiving cylinder to promote the solid-liquid separation of waste water. The application has the effect of improving the fly ash treatment efficiency.

Description

Technical Field

[0001] This application relates to the field of fly ash treatment equipment technology, and in particular to a treatment device and method for fly ash from municipal solid waste incineration. Background Technology

[0002] Flue gas from municipal solid waste incineration contains a large amount of fly ash and some soluble heavy metal components. In engineering practice, wet scrubbing is usually used to wash the flue gas. After scrubbing, the solid wastewater containing solids is then treated with solvents (such as heavy metal chelating agents, coagulants / flocculators) to achieve solid-liquid separation and meet emission standards.

[0003] However, existing technologies generally suffer from the following efficiency bottlenecks: Long settling time: Solvents are often added uniformly in sedimentation tanks or independent settling areas. When the concentration and flow rate of the incoming liquid fluctuate, the contact and mixing between the reagent and suspended particles are insufficient, resulting in slow floc formation and small particle size. A longer settling time is required to achieve acceptable clarity and separation, thus lengthening the overall treatment cycle time. Inefficient containerization and transfer: The spray effluent side typically relies on several independent containers to collect wastewater one by one. After a single container is full, it needs to be transferred to the settling area for settling. This batch processing mode of "place one by one—fill and remove—settle again" easily leads to discontinuous incoming liquid reception and accumulated waiting time, further reducing treatment efficiency and increasing the on-site logistics burden and land requirements.

[0004] Therefore, it is urgent to set up a treatment device for fly ash from municipal solid waste incineration.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To improve the treatment efficiency of fly ash from municipal solid waste incineration, this application provides a treatment device and method for fly ash from municipal solid waste incineration.

[0007] In a first aspect, this application provides a treatment device for fly ash from municipal solid waste incineration, the treatment device comprising:

[0008] The processing frame has a first end and a second end that are positioned opposite to each other;

[0009] A spray unit, disposed at the first end, is used to spray the flue gas containing fly ash to generate wastewater, and the spray unit has a liquid outlet side;

[0010] A receiving unit is disposed on the liquid outlet side. The receiving unit includes a receiving bracket, a driving assembly, and a plurality of receiving cylinders arranged circumferentially along the receiving bracket. The plurality of receiving cylinders are rotatably mounted on the receiving bracket by the driving assembly.

[0011] The driving component can operate in a first state and a second state:

[0012] In the first state, the driving component drives multiple receiving cylinders to move along the receiving support, so that different receiving cylinders are sequentially located at the receiving position on the liquid outlet side;

[0013] In the second state, the drive assembly drives the plurality of receiving cylinders to rotate about their own axes respectively;

[0014] An additive unit is used to add solvent into the receiving cylinder to promote solid-liquid separation in the wastewater.

[0015] By adopting the above technical solution, the fly ash-containing flue gas is sprayed by a spray unit at the first end of the treatment frame, and the generated wastewater is discharged from the liquid outlet side of the spray unit and received by a receiving unit located on the liquid outlet side. The receiving unit includes a receiving bracket, a driving component, and multiple receiving cylinders arranged circumferentially along the receiving bracket. The driving component first operates in a first state, driving the multiple receiving cylinders to move along the receiving bracket, so that different receiving cylinders sequentially reach the receiving position on the liquid outlet side to complete the receiving of the incoming liquid. Then the driving component switches to a second state, causing the multiple receiving cylinders to rotate around their own axes, while an adding unit connected to the receiving cylinders adds solvent into the cylinders to promote solid-liquid separation of the wastewater.

[0016] By setting up a receiving unit on the liquid outlet side of the spray unit and using a circumferential arrangement of multiple receiving cylinders in coordination with the drive components, receiving, adding chemicals, and separating are carried out alternately on different receiving cylinders, avoiding the interruptions caused by aligning and transporting each container individually, thus achieving continuous processing; by using an addition unit connected to the receiving cylinder and rotating and mixing inside the cylinder, the contact between the chemical and the incoming liquid is enhanced, accelerating solid-liquid separation and shortening the waiting time.

[0017] Optionally, the driving component includes:

[0018] A drive gear ring is rotatably connected to the receiving bracket;

[0019] The driven wheel has multiple driven wheels, which are spaced apart circumferentially along the drive gear ring, wherein each driven wheel meshes with the drive gear ring, and the receiving cylinder is connected to the driven wheel;

[0020] A driving wheel is provided, and there are gaps between the plurality of driven wheels. The driving wheel is rotatably connected within the gaps and meshes with each of the driven wheels.

[0021] The first power component, through which the drive wheel rotates;

[0022] The second power component allows the plurality of driven wheels to rotate via the second power component.

[0023] By adopting the above technical solution, in the first state, the second power component is activated to rotate multiple sets of driven wheels. With the help of the meshing and relative rolling action of the driven wheels and the drive gear ring, the receiving cylinders are driven to move circumferentially along the receiving support with the driven wheels, so that different receiving cylinders arrive at the receiving position on the liquid outlet side of the spray unit in sequence. In the second state, the first power component is activated to drive the drive wheel to rotate. The drive wheel meshes with each driven wheel and outputs a rotation torque to it, so that the multiple receiving cylinders connected to the driven wheels rotate around their own axes to complete the mixing and separation processing in the receiving cylinders. Then, it switches back to the first state to proceed to the next station, realizing the continuous operation of the receiving-rotation processing cycle.

[0024] The above structure enables the receiving cylinders to rotate circumferentially with equal pitch and continuous flow using the second power component. At the same time, the driving wheel, which is arranged in the gap and meshes with each driven wheel, can be centrally driven by the first power component to enable all receiving cylinders to rotate synchronously or independently and controllably. This combines the two functions of "overall rotation" and "rotation processing", reducing the number of components and maintenance difficulty. Meanwhile, the driving wheel is placed in the gap between the driven wheels to save radial space, making the receiving unit structure more compact and the channel more unobstructed, which is conducive to realizing parallel workstations of multiple receiving cylinders and a small footprint layout.

[0025] Optionally, the first power component includes:

[0026] A first rotating shaft is rotatably connected to the receiving bracket, and the axial direction of the first rotating shaft is the same as the axial direction of the receiving cylinder.

[0027] The first motor is used to drive the first rotating shaft to rotate.

[0028] By adopting the above technical solution, the first power component consists of a first rotating shaft and a first motor. The first rotating shaft is rotatably mounted on the receiving bracket, and its axial direction is the same as that of the receiving cylinder. When the drive component switches to the self-rotation mode, the first motor drives the first rotating shaft to rotate, and the first rotating shaft outputs power to the drive wheel connected to it. The drive wheel then meshes with the circumferentially distributed driven wheels one by one and drives them to rotate, so that the receiving cylinders connected to each driven wheel rotate around their own axis, completing the mixing and solid-liquid separation treatment after the drug is added into the cylinder.

[0029] By aligning the axis of the first rotating shaft with the axis of the receiving cylinder, and ensuring that the power transmission link is in the same direction as the cylinder's rotation axis, intermediate reversal transmission and additional off-center loads are reduced, resulting in high transmission efficiency, low vibration, and stable positioning. The first motor drives the drive wheel uniformly through the first rotating shaft, achieving centralized drive and synchronization of the rotation of multiple receiving cylinders. While ensuring rotation consistency, the structure is more compact, has fewer parts, and is easier to maintain, which helps to shorten the separation cycle and improve the overall processing stability and reliability.

[0030] Optionally, the second power component includes:

[0031] The second rotating shaft has one end rotatably connected to the receiving bracket, and the axial direction of the second rotating shaft is the same as the axial direction of the receiving cylinder.

[0032] A power support is connected to the other end of the second rotating shaft, wherein the power support has a plurality of connecting parts corresponding to the driven wheel; the power support is connected to the driven wheel through the connecting parts;

[0033] The second motor is used to drive the second shaft to rotate.

[0034] By adopting the above technical solution, the second power component consists of a second rotating shaft, a power support, and a second motor. One end of the second rotating shaft is rotatably mounted on the receiving support, and its axial direction is the same as that of the receiving cylinder. The other end of the second rotating shaft is fixedly connected to the power support, which is provided with multiple connecting parts corresponding to the driven wheels, and is connected to each driven wheel through these connecting parts. During operation, the second motor drives the second rotating shaft to rotate, causing the power support to rotate circumferentially as a whole. The power support transmits the rotational power synchronously to the corresponding driven wheel through its connecting parts. Since each driven wheel is engaged with the drive gear ring, the rotation of the power support enables each receiving cylinder to move circumferentially along the receiving support, allowing different receiving cylinders to sequentially reach the receiving position on the liquid outlet side of the spray unit. This facilitates the continuous receiving task of the receiving cylinders moving to the liquid outlet side, creating the cycle time and working conditions for the subsequent (driven by the first power component to the drive wheel) self-rotation processing of the receiving cylinders.

[0035] The second rotating shaft is arranged coaxially with the receiving cylinder, making the rotational transmission link straight, with high rigidity and small off-center load. The power support centered on the second rotating shaft synchronously drives multiple receiving cylinders / driven wheels through multiple connecting parts. With the direct meshing of the driven wheel and the drive gear ring, a circumferential repositioning effect with high positioning accuracy and good repeatability can be obtained, reducing backlash and slippage. The integrated solution of motor-shaft-support has fewer components, occupies less space, and is simpler in wiring and maintenance. It is conducive to arranging more receiving cylinders in a compact structure, realizing continuous rotation without interruption of flow, thereby reducing the need for manual positioning and handling of containers, and improving the overall processing cycle, operational stability and reliability.

[0036] Optionally, the receiving cylinder includes a first cylinder section and a second cylinder section arranged sequentially in a vertical direction;

[0037] A blocking element is provided between the first cylindrical section and the second cylindrical section;

[0038] The receiving cylinder is in a sedimentation state;

[0039] During the sedimentation state, the blocking element is closed, thus isolating and preventing communication between the first cylinder section and the second cylinder section.

[0040] By adopting the above technical solution, the receiving cylinder is vertically divided into an upper first section and a lower second section, with a blocking element between the two sections to seal the gap between them. During operation, the receiving cylinder is initially in a sedimentation state, with the blocking element closed, isolating the first and second sections. Solid-containing wastewater entering the first section undergoes particle settling within this independent space and accumulates above the blocking element. When wastewater is injected into the receiving cylinder, the blocking element separates the first and second sections, placing the wastewater within the first section. After sedimentation, the wastewater undergoes solid-liquid separation for subsequent treatment.

[0041] Optionally, the blocking element includes:

[0042] baffle,

[0043] A drive source, connected to the baffle plate, is used to drive the baffle plate to move along the axial direction of the first cylindrical section to separate or open the first cylindrical section from the second cylindrical section; the drive source is also used to drive the baffle plate to move along a first direction, wherein the axial direction of the first cylindrical section is perpendicular to the first direction.

[0044] By adopting the above technical solution, the blocking component includes a blocking plate for opening and closing the channel and a driving source. During operation, when the receiving cylinder is in the sedimentation stage, the driving source drives the blocking plate axially upward to the sealing position, separating the first cylinder section from the second cylinder section; when the receiving cylinder is driven to the predetermined station to enter the transfer stage (to clean the solids on the blocking plate), the driving source drives the blocking plate along the first direction, causing the blocking plate to move to the solids cleaning position, so as to facilitate the subsequent cleaning of the solids on the blocking plate.

[0045] Optionally, the driving source includes:

[0046] A drive screw is rotatably connected inside the second cylindrical section, and the axial direction of the drive screw is perpendicular to the axial direction of the first cylindrical section;

[0047] The first slider and the second slider are disposed on the drive screw; the blocking plate is disposed on the side of the first slider and the second slider away from the bottom wall of the second cylinder section;

[0048] A drive motor is used to drive the drive screw to rotate;

[0049] A guide component is used to guide the movement of the blocking plate;

[0050] Wherein, the distance between the top surface of the first slider and the bottom wall of the second cylinder section is greater than the distance between the top surface of the second slider and the bottom wall of the second cylinder section, and the bottom wall of the baffle plate is provided with a protrusion that cooperates with the first slider; so that when the first slider approaches the second slider, the baffle plate is lifted, thereby sealing the first cylinder section and the second cylinder section, and the first slider and the second slider are connected by a connector.

[0051] By adopting the above technical solution, the device is initially in a connected state. The drive motor drives the drive screw located in the second cylinder section and perpendicular to the axis of the first cylinder section to rotate. Since the distance between the top surface of the first slider and the bottom wall of the second cylinder section is greater than that of the second slider, the baffle plate installed on the side of the first slider and the second slider away from the bottom wall is "lifted up" by the first slider when the first slider and the second slider approach each other. As the screw continues to rotate, it is lifted to the sealing position, thereby achieving a seal between the first cylinder section and the second cylinder section. When solids are deposited on the baffle plate and it is necessary to remove the solids on the baffle plate, the drive motor rotates in the opposite direction, and the first slider and the second slider move together. Under the action of the first slider and the second slider, the baffle plate is moved to the subsequent cleaning position.

[0052] Optionally, the processing device further includes an extraction unit;

[0053] The extraction unit includes an extraction bracket, an extraction pump, an extraction tube, and a lifting assembly;

[0054] The extraction bracket is disposed on one side of the receiving bracket;

[0055] The extraction tube is connected to the lifting assembly and moves through the lifting assembly. The direction of movement of the extraction tube is the same as the axial direction of the receiving cylinder.

[0056] The extraction pump is connected to the extraction pipe and is used to extract the liquid in the receiving cylinder when the extraction pipe is inserted into the receiving cylinder.

[0057] By adopting the above technical solution, this processing equipment adds an extraction unit, which consists of an extraction bracket set on one side of the receiving bracket, a matching extraction pump, a liftable extraction pipe, and a lifting assembly. During operation, the extraction pipe is connected to the lifting assembly and moves linearly up and down in the same direction as the receiving cylinder under its drive. When it is necessary to extract liquid from a certain receiving cylinder, the lifting assembly extends the extraction pipe from top to bottom into the receiving cylinder to a predetermined depth, and the extraction pump is connected to the extraction pipe and starts to complete the extraction of liquid from the receiving cylinder. After extraction is completed, the extraction pump stops, and the lifting assembly withdraws the extraction pipe along the same axis and resets it so as to switch to the next receiving cylinder or enter the next cycle.

[0058] The extraction support is located on one side of the receiving support, and the extraction pipe is raised and lowered coaxially, enabling on-site extraction without altering the circumferential arrangement of the receiving cylinder. The lifting assembly controls the insertion and extraction actions, and in conjunction with the continuous suction of the extraction pump, it can quickly remove liquid from the cylinder, release volume, shorten waiting time, and increase continuous processing cycle time. As an independent module, the extraction unit can be flexibly switched between multiple receiving cylinders, occupying little space and being easy to modify and maintain. It also reduces the risk of manual handling and secondary contamination, thereby improving the overall processing efficiency, continuity, and operational safety of the system.

[0059] Optionally, the processing device further includes an adsorption unit;

[0060] The second section has an outlet;

[0061] The baffle plate can be moved to the outlet by the drive source, and the adsorption unit is located at the outlet. The adsorption unit is used to adsorb and collect solid waste on the baffle plate.

[0062] By adopting the above technical solution, the treatment equipment is equipped with an adsorption unit and an outlet is opened on the second cylinder section. When it is necessary to clean the solid waste attached to the surface of the baffle plate, the drive source drives the baffle plate to move to the outlet of the second cylinder section and lifts the baffle plate at the outlet. The adsorption unit is then activated after being aligned with the baffle plate to adsorb and collect the solid waste on the baffle plate. After collection is completed, the adsorption unit stops, and the baffle plate is driven to detach from the outlet and return to its original position inside the cylinder. Subsequent sedimentation and continuous circulation continue.

[0063] By arranging an adsorption unit at the outlet of the second cylinder section and allowing the baffle plate to be cleaned in place under the action of the driving source, the solids adhering to the surface of the baffle plate can be removed on-site and quickly, avoiding the problems of poor opening and closing and sealing failure caused by scale accumulation, and reducing the risk of backflow and secondary pollution. This online collection method does not require manual disassembly and cleaning, shortens maintenance downtime, maintains a stable circulation rhythm, and centrally recovers solids, which is conducive to subsequent unified disposal and improves the overall operational reliability, processing efficiency and hygiene safety of the system.

[0064] Secondly, this application provides a method for treating fly ash from municipal solid waste incineration, the method comprising:

[0065] The fly ash flue gas is connected to a spray unit, which sprays the fly ash flue gas to form wastewater.

[0066] The wastewater is then introduced into the receiving cylinder;

[0067] Solvent is added to the receiving cylinder to achieve solid-liquid separation of the wastewater;

[0068] The liquid inside the receiving cylinder is extracted, and the solids are collected.

[0069] In summary, this application includes at least one of the following beneficial technical effects:

[0070] 1. The receiving unit adopts multiple receiving cylinders arranged circumferentially along the receiving support. The driving component realizes the indexing and rotation between cylinders in the "first state" and realizes the rotation of each cylinder in the "second state". With the addition unit connected to the receiving cylinder, the chemical is added on the spot, so that "receiving - solid-liquid separation - handover" can be carried out in parallel on different cylinders, avoiding the interruption caused by the positioning and handling of each container, and significantly improving the processing capacity and stability.

[0071] 2. The structure of the receiving cylinder with upper and lower sections and an openable and closable blocking component separates the first and second cylinder sections during the sedimentation stage, so that the solids can be settled onto the blocking component, which facilitates further cleaning of the solids in the later stage.

[0072] 3. In operation, the blocking device provided in this application, when the receiving cylinder is in the sedimentation stage, the drive source drives the blocking plate axially upward to the sealing position, separating the first cylinder section from the second cylinder section; when the receiving cylinder is driven to the predetermined station to enter the transfer stage, the drive source drives the blocking plate along the first direction, driving the blocking plate to a position that facilitates the cleaning of solids, so as to facilitate the cleaning of solids on the blocking plate in the later stage. Attached Figure Description

[0073] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0074] Figure 1 This is a schematic diagram of the overall structure of a device for treating fly ash from municipal solid waste incineration, according to one embodiment of this disclosure.

[0075] Figure 2 for Figure 1 Enlarged view of part A.

[0076] Figure 3 This is a partial structural schematic diagram of a device for treating fly ash from municipal solid waste incineration, according to one embodiment of this disclosure.

[0077] Figure 4 This is a schematic diagram from another perspective of a partial structure of a device for treating fly ash from municipal solid waste incineration, according to one embodiment of this disclosure.

[0078] Figure 5 This is a partial structural diagram of the driving component in one embodiment of the present disclosure.

[0079] Figure 6This is a schematic diagram of the structure of the receiving cylinder in one embodiment of the present disclosure.

[0080] Figure 7 for Figure 6 A sectional view.

[0081] Figure 8 for Figure 7 Enlarged view of part B.

[0082] Figure 9 This is a schematic diagram of the extraction unit, the clearing unit, and the adding unit in one embodiment of the present disclosure.

[0083] Explanation of reference numerals in the attached figures:

[0084] 1. Processing frame; 11. First end; 12. Second end; 2. Spraying unit; 21. Liquid outlet side; 3. Receiving unit; 31. Receiving bracket; 32. Drive assembly; 321. Drive gear ring; 322. Driven wheel; 323. Drive wheel; 324. First power component; 3241. First rotating shaft; 3242. First motor; 325. Second power component; 3251. Second rotating shaft; 3252. Power bracket; 3253. Connecting part; 3254. Second motor; 33. Receiving cylinder; 331. First cylinder section; 332. Second cylinder section; 3321. Outlet; 34. Blocking component; 341. Blocking plate; 342. Drive source; 3421. Drive screw; 3422. First slider; 3423. Second slider; 3424. Drive motor; 3425. Guide component; 34251. First guide post; 34252. Second guide post; 34253. Guide hole; 4. Extraction unit; 41. Extraction bracket; 42. Extraction pump; 43. Extraction tube; 44. Lifting assembly; 441. Lifting bracket; 442. Rotary disk; 443. Mounting bracket; 444. Lifting gear; 445. Lifting motor; 446. Lifting rack; 5. Adsorption unit; 6. Cleaning unit; 61. Cleaning scraper; 7. Addition unit. Detailed Implementation

[0085] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0086] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0087] This application discloses a treatment device for fly ash from municipal solid waste incineration. The device includes a treatment frame 1 with a first end 11 and a second end 12 arranged opposite to each other. The frame is linearly arranged along the material flow direction, forming a continuous process channel of "spraying—receiving and separation—conveyance". A spraying unit 2 is provided at the first end 11. The spraying unit 2 is used to perform gas-liquid contact with the flue gas containing fly ash and capture particulate matter and soluble components. Wastewater formed after spraying is discharged directionally along the liquid outlet side 21 of the spraying unit 2. A receiving unit 3 is provided corresponding to the liquid outlet side 21. The receiving unit 3 includes a receiving support 31 arranged in a ring or polygonal shape, a driving assembly 32, and multiple receiving cylinders 33 spaced apart circumferentially along the receiving support 31. The multiple receiving cylinders 33 are rotatably connected to the receiving support 31 via the driving assembly 32 and can revolve relative to the receiving support 31. The drive assembly 32 can switch between two operating states: in the first state, it drives multiple receiving cylinders 33 to revolve around the receiving support 31, so that different receiving cylinders 33 sequentially reach the receiving position located on the liquid outlet side 21; in the second state, it drives multiple receiving cylinders 33 to rotate around their own axes to achieve solid-liquid separation of wastewater within the receiving cylinders 33. The adding unit 7 is used to add solvent into the receiving cylinders 33 to promote solid-liquid separation of the wastewater; furthermore, in some embodiments, the adding unit 7 can add solvent to one or more receiving cylinders 33 according to a set ratio and perform pulsed or continuous addition when needed.

[0088] During operation, the fly ash-containing flue gas enters the spray unit 2 at the first end 11. After spraying and demisting, a thin layer of solid wastewater is continuously formed on the liquid outlet side 21 and flows into the receiving position below by gravity. The drive component 32 is in the first state, driving multiple receiving cylinders 33 arranged circumferentially along the receiving support 31 to revolve in a rhythm. The receiving cylinders 33 arrive at the receiving position in sequence. Then, the adding unit 7 injects a preset amount of solvent into the receiving cylinder 33 to mix with the received wastewater. The drive component 32 switches to the second state, and the receiving position and the multiple receiving cylinders 33 thereafter rotate around their own axes to accelerate flocculation and solid-liquid separation. When the separation time of a certain receiving cylinder 33 reaches a set threshold, the drive component 32 returns to the first state, the receiving cylinder 33 unlocks and relocates to other positions for subsequent processes. In subsequent processes, the material inside the solid-liquid separation receiving cylinder 33 is processed. After processing, the receiving cylinder 33 returns to the receiving position to participate in the next cycle, thus realizing a quasi-continuous processing flow with multiple receiving cylinders 33 rotating.

[0089] It should be noted that in this embodiment, the function of the spray unit 2 is to spray the flue gas containing fly ash to generate wastewater. This method is well known to those skilled in the art, and this application will not elaborate on this structure.

[0090] As an example, the receiving cylinder 33 includes a first cylinder section 331 and a second cylinder section 332 arranged sequentially in a vertical direction; a blocking member 34 is provided between the first cylinder section 331 and the second cylinder section 332; the receiving cylinder 33 is in a sedimentation state; in the sedimentation state, the blocking member 34 is closed, so that the first cylinder section 331 and the second cylinder section 332 are isolated from each other and not connected, so as to facilitate solid-liquid separation of wastewater in the receiving cylinder 33.

[0091] In this example, after the receiving cylinder 33 moves to the receiving position, the blocking member 34 remains closed, isolating the first cylinder section 331 from the second cylinder section 332. Solid wastewater enters the first cylinder section 331 from top to bottom. At this time, under the action of the driving component 32, the receiving cylinder 33 is stationary or rotates at low speed to achieve solid-liquid separation of the wastewater. Furthermore, since the blocking member 34 is closed, the sediment is confined in the first cylinder section 331 and does not communicate with the second cylinder section 332 until the subsequent working condition switches to the first cylinder section 331 and the second cylinder section 332 to unload the solids.

[0092] Furthermore, the blocking member 34 includes a blocking plate 341 and a driving source 342; the driving source 342 is connected to the blocking plate 341 and is used to drive the blocking plate 341 to move along the axial direction of the first cylindrical section 331 to isolate or open the first cylindrical section 331 from the second cylindrical section 332; at the same time, the driving source 342 is also used to drive the blocking plate 341 to move along a first direction, wherein the axial direction of the first cylindrical section 331 is perpendicular to the first direction.

[0093] Specifically, during the sedimentation stage, the drive source 342 causes the baffle plate 341 to rise along the cylinder axis to the closed position, separating the first cylinder section 331 from the second cylinder section 332, and the solid falls and accumulates on the baffle plate 341. When the receiving cylinder 33 moves to the predetermined transfer position (the solid-liquid separation of solid and wastewater in the receiving cylinder 33 is completed), the drive source 342 drives the baffle plate 341 to move downward to release the sealing pre-pressure (the solid is deposited on the baffle plate 341). Then, the drive source 342 drives the baffle plate 341 to move in a first direction perpendicular to the cylinder axis, so that the solid accumulated on the baffle plate 341 moves to a position in the second cylinder section 332 that is easy to clean.

[0094] In some embodiments, the drive source 342 includes a drive screw 3421, a first slider 3422, a second slider 3423, and a drive motor 3424; the drive screw 3421 is rotatably connected within the second cylindrical section 332, and the axial direction of the drive screw 3421 is perpendicular to the axial direction of the first cylindrical section 331; the first slider 3422 and the second slider 3423 are disposed on the drive screw 3421 (in this application, the drive screw 3421 is a one-way threaded rod); a baffle plate 341 is disposed on the first slider 3422. 422 and the second slider 3423 are on the side away from the bottom wall of the second cylinder section 332; the drive motor 3424 is used to drive the drive screw 3421 to rotate; wherein, the distance between the top surface of the first slider 3422 and the bottom wall of the second cylinder section 332 is greater than the distance between the top surface of the second slider 3423 and the bottom wall of the second cylinder section 332, so that when the first slider 3422 approaches the second slider 3423, it lifts the baffle plate 341, thereby sealing the first cylinder section 331 and the second cylinder section 332. The drive motor 3424 drives the drive screw 3421, located inside the second cylindrical section 332 and perpendicular to the axis of the first cylindrical section 331, to rotate. At this time, the first slider 3422 and the second slider 3423 move toward the connection between the first cylindrical section 331 and the second cylindrical section 332. Because the drive screw 3421 does not have a threaded section at the corresponding position at the connection between the first cylindrical section 331 and the second cylindrical section 332 (not shown in the attached drawings), the second slider 3423 will stop moving, and the first slider 3422 will move to below the baffle plate 341. The first slider 3422 moves toward the second slider 3423. 423 Movement: Since the distance between the top surface of the first slider 3422 and the bottom wall of the second cylinder section 332 is greater than the distance between the top surface of the second slider 3423 and the bottom wall of the second cylinder section 332, and the baffle plate 341 has a protrusion on the side near the bottom wall of the second cylinder section 332 (this application does not specifically mark this feature), when the first slider 3422 contacts the protrusion, the baffle plate 341 is lifted (one end of the baffle plate 341 is rotatably connected to the second slider 3423, so the baffle plate 341 will have an upward movement tendency), thereby achieving the sealing of the first cylinder section 331 and the second cylinder section 332.

[0095] Similarly, when it is necessary to remove solids from the baffle plate 341, the drive motor 3424 drives the drive screw 3421 to rotate in the opposite direction. Since the second slider 3423 is in the part without the threaded section, the second slider 3423 will not move with the drive screw 3421 in the initial stage, while the first slider 3422 will move with the rotation of the drive screw 3421. At this time, the first slider 3422 moves away from the second slider 3423, and the first slider 3422 gradually separates from the protrusion. At this time, the baffle plate 341 moves downward, and the first cylindrical section 331 and the second cylindrical section 332 are in a connected state. Since there is a connecting piece between the first slider 3422 and the second slider 3423 (not specifically marked in the attached drawings of this application), the movement of the first slider 3422 will also drive the second slider 3423 to move. The movement of the first slider 3422 and the second slider 3423 achieves the purpose of moving the baffle plate 341 to the outlet 3321 of the second cylindrical section 332, so as to facilitate the subsequent removal of solids from the baffle plate 341.

[0096] As an example, the drive source 342 also includes a guide 3425; the guide 3425 includes a first guide post 34251 and a second guide post 34252; the first guide post 34251 is disposed on the second slider 3423; the second guide post 34252 is disposed on the side of the baffle plate 341 near the second slider 3423; wherein the second guide post 34252 has a guide hole 34253 adapted to the first guide post 34251, thereby facilitating the guidance of the baffle plate 341 during upward or downward movement.

[0097] In some embodiments of this disclosure, the processing equipment further includes an adsorption unit 5; the second cylindrical section 332 has an outlet 3321; the baffle plate 341 is movable to the outlet 3321 via a drive source 342, and the adsorption unit 5 is located at the outlet 3321. The adsorption unit 5 is used to adsorb and collect solid waste on the baffle plate 341. When the sedimentation stage ends and the solids on the baffle plate 341 need to be cleaned, the drive source 342 first lowers the baffle plate 341, and the first cylindrical section 331 communicates with the second cylindrical section 332; the drive motor 3424 drives the drive screw 3421 to rotate, causing the first slider 3422 and the second slider 3423 to move in a first direction perpendicular to the axis of the receiving cylinder 33. The movement of the first slider 3422 and the second slider 3423 causes the baffle plate 341 to be laterally translated to the outlet 3321 of the second cylindrical section 332 and aligned with the outlet 3321. The adsorption unit 5 at the outlet 3321 quickly sucks away the solid waste attached to the baffle plate 341 and transports it to the collection container through a pipeline.

[0098] It should be noted that the function of the adsorption unit 5 is to adsorb the solid on the baffle plate 341 by generating negative pressure; this structure is well known to those skilled in the art and will not be described in detail here.

[0099] It should also be noted that, in this embodiment, the adsorption unit 5 can be raised and lowered to better remove solids from the baffle plate 341. This raising and lowering structure (not shown in the accompanying drawings) is well-known to those skilled in the art and will not be described in detail here. Furthermore, this raising and lowering structure allows the baffle plate 341 to remove solids without extending beyond the outlet 3321 of the second cylindrical section 332.

[0100] In some embodiments of this disclosure, the processing device further includes an extraction unit 4; the extraction unit 4 includes an extraction bracket 41, an extraction pump 42, an extraction tube 43, and a lifting assembly 44; the extraction bracket 41 is disposed on one side of the receiving bracket 31; the extraction tube 43 is connected to the lifting assembly 44 and moves through the lifting assembly 44, and the direction of movement of the extraction tube 43 is the same as the axial direction of the receiving cylinder 33; the extraction pump 42 is connected to the extraction tube 43 and is used to extract the liquid in the receiving cylinder 33 when the extraction tube 43 extends into the receiving cylinder 33. After the receiving cylinder 33 moves to the extraction position (the receiving cylinder 33 contains solid-liquid separated wastewater and solids), the lifting assembly 44 descends to insert the extraction pipe 43 along the cylinder axis to a preset depth (avoiding the blocking part 34 and sediment); the extraction pump 42 starts, and the extraction pipe 43 extracts the wastewater in the receiving cylinder 33. At this time, only solids remain in the receiving cylinder 33 (the solids are located on the baffle plate 341 or on the side wall of the receiving cylinder 33), thereby achieving the purpose of extracting wastewater from the receiving cylinder 33.

[0101] As an example, the lifting assembly 44 may include a lifting bracket 441, a rotating disk 442, a mounting bracket 443, a lifting gear 444, a lifting rack 446, and a lifting motor 445. The lifting bracket 441 is located on one side of the second end 12. The lifting rack 446 is located on the lifting bracket 441, and the axial direction of the lifting rack 446 is the same as the axial direction of the receiving cylinder 33. The mounting bracket 443 is slidably connected to the lifting bracket 441 through the lifting gear 444, and the lifting gear 444 meshes with the lifting rack 446. The lifting motor 445 is used to drive the lifting gear 444 to rotate.

[0102] As another example, unit 7 is added to the rotating disk 442.

[0103] In some embodiments, the processing device further includes a cleaning unit 6; the cleaning unit 6 includes a plurality of cleaning scrapers 61; the plurality of cleaning scrapers 61 are disposed on the rotating disk 442, and in the cleaning state, the plurality of cleaning scrapers 61 extend into the receiving cylinder 33 to remove the solids adhering to the receiving cylinder 33, so as to remove the solids to the baffle plate 341.

[0104] Specifically, when wastewater is injected into the receiving cylinder 33, the lifting component 44 moves, driving the rotating disk 442 to move so that the adding unit 7 moves directly above the receiving cylinder 33. The adding unit 7 adds solvent into the receiving cylinder 33 to facilitate solid-liquid separation of the wastewater. The receiving cylinder 33 continues to move, and at this time, the lifting component 44 moves upward (to prevent interference with the movement of the receiving cylinder 33). When the receiving cylinder 33 moves to the next position (wastewater solid-liquid separation is completed), the lifting component 44 moves, driving the rotating disk 442 to move. 2. The extraction unit 4 moves to the top of the receiving cylinder 33. The lifting assembly 44 continues to move, and the extraction unit 4 contacts the receiving cylinder 33 and extracts the wastewater inside the receiving cylinder 33. The receiving cylinder 33 continues to move, and the lifting assembly 44 moves, driving the rotating disk 442 to move, so that the cleaning unit 6 moves to the top of the receiving cylinder 33. The lifting assembly 44 continues to move, and the cleaning unit 6 extends into the receiving cylinder 33 and scrapes the solids on the side wall of the receiving cylinder 33 to scrape all the solids onto the baffle plate 341.

[0105] In some embodiments, the processing equipment further includes a heating unit; the heating unit is connected to the receiving cylinder 33 and is used to heat the receiving cylinder 33. Specifically, after the solid-liquid separated wastewater in the receiving cylinder 33 has been extracted by the extraction unit 4, the heating unit heats the receiving cylinder 33 so that the solids in the receiving cylinder 33 are quickly formed, which facilitates the efficiency of subsequent solids treatment.

[0106] In some embodiments of this disclosure, the drive assembly 32 includes a drive gear ring 321, driven wheels 322, a drive wheel 323, a first power component 324, and a second power component 325. The drive gear ring 321 is rotatably connected to the receiving bracket 31. Multiple driven wheels 322 are spaced apart circumferentially along the drive gear ring 321, with each driven wheel 322 meshing with the drive gear ring 321. The receiving cylinder 33 is connected to the driven wheels 322. A gap exists between the multiple driven wheels 322, and the drive wheel 323 is rotatably connected within the gap and meshes with each driven wheel 322. The first power component 324 allows the drive wheel 323 to rotate. The second power component 325 allows the multiple driven wheels 322 to rotate.

[0107] Specifically, when the equipment is running, the system enters the first state: the second power component 325 controls the second power component 325 to drive multiple driven wheels 322 to move synchronously. Each driven wheel 322, under the constraint of meshing with the drive gear ring 321, "rolls and indexes" along the circumference of the gear ring, thereby driving the array of receiving cylinders 33 to revolve along the receiving support 31. Different receiving cylinders 33 sequentially reach the receiving position located on the liquid outlet side 21. After completing the receiving and filling, the system switches to the second state: the first power component 324 drives the drive wheel 323 to rotate. The drive wheel 323 meshes with the driven wheel 322 in the corresponding position and applies a rotation torque to it, so that the driven wheel 322 and its bearing receiving cylinder 33 rotate at high speed around their own axis to enhance solid-liquid separation.

[0108] In some embodiments of this disclosure, the first power component 324 includes a first rotating shaft 3241 and a first motor 3242; the first rotating shaft 3241 is rotatably connected to the receiving bracket 31, the axial direction of the first rotating shaft 3241 is the same as the axial direction of the receiving cylinder 33, and the first rotating shaft 3241 is connected to the drive wheel 323; the first motor 3242 is used to drive the first rotating shaft 3241 to rotate.

[0109] In this embodiment, the first motor 3242 drives the first rotating shaft 3241 to rotate, and the first rotating shaft 3241 transmits torque to the target driven wheel 322 and the receiving cylinder 33 via the driving wheel 323, causing the receiving cylinder 33 to rotate around its own axis.

[0110] In some embodiments of this disclosure, the second power component 325 includes a second rotating shaft 3251, a power support 3252, and a second motor 3254; one end of the second rotating shaft 3251 is rotatably connected to the receiving support 31, and the axial direction of the second rotating shaft 3251 is the same as the axial direction of the receiving cylinder 33; the power support 3252 is connected to the other end of the second rotating shaft 3251, wherein the power support 3252 has a plurality of connecting portions 3253 corresponding to the driven wheel 322; the power support 3252 is connected to the driven wheel 322 through the connecting portions 3253; the second motor 3254 is used to drive the second rotating shaft 3251 to rotate. During operation, the second motor 3254 drives the second rotating shaft 3251 to rotate, and the second rotating shaft 3251 drives the power support 3252 fixed to it to rotate around the shaft. Multiple connecting parts 3253 on the power support 3252 are connected to the corresponding driven wheels 322 respectively. The rotation of the driven wheels 322 causes the array of receiving cylinders 33 set on the driven wheels 322 to rotate synchronously along the circumference of the receiving support 31 under the constraint of the drive gear ring 321, so as to send multiple receiving cylinders 33 to the receiving position of the liquid outlet side 21 in sequence, and realize the uninterrupted feeding of the liquid outlet side 21.

[0111] The drive component 32 can send the processed receiving cylinder 33 to the next position and send the next receiving cylinder 33 to the receiving position; and the drive component 32 can realize solid-liquid separation of solid wastewater in the receiving cylinder 33.

[0112] In addition, this application also discloses a method for treating fly ash from municipal solid waste incineration: the treatment method includes:

[0113] S1: Connect the fly ash flue gas to the spray unit 2, and the spray unit 2 sprays the fly ash flue gas to form wastewater.

[0114] S2: The wastewater is introduced into the receiving cylinder 33.

[0115] S3: Add solvent into the receiving cylinder 33 to achieve solid-liquid separation of the wastewater.

[0116] S4: Extract the liquid from the receiving cylinder 33 and collect the solid.

[0117] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A device for treating fly ash from municipal solid waste incineration, characterized in that: The processing equipment includes: The processing frame (1) has a first end (11) and a second end (12) arranged opposite to each other; A spray unit (2) is disposed at the first end (11) for spraying the flue gas containing fly ash to generate wastewater. The spray unit (2) has a liquid outlet side (21). A receiving unit (3) is disposed on the liquid outlet side (21). The receiving unit (3) includes a receiving bracket (31), a driving assembly (32), and a plurality of receiving cylinders (33) arranged circumferentially along the receiving bracket (31). The plurality of receiving cylinders (33) are rotatably mounted on the receiving bracket (31) by the driving assembly (32). The receiving cylinder (33) includes a first cylinder section (331) and a second cylinder section (332) arranged sequentially in the vertical direction; A blocking element (34) is provided between the first cylindrical section (331) and the second cylindrical section (332); The receiving cylinder (33) is in a sedimentation state; During the sedimentation state, the blocking member (34) is closed, so that the first cylinder section (331) and the second cylinder section (332) are isolated from each other and not connected; The driving component (32) can operate in a first state and a second state: In the first state, the drive assembly (32) drives multiple receiving cylinders (33) to move along the receiving bracket (31) so that different receiving cylinders (33) are sequentially located at the receiving position on the liquid outlet side (21); In the second state, the drive assembly (32) drives the plurality of receiving cylinders (33) to rotate about their own axes respectively; Adding unit (7) is used to add solvent into receiving cylinder (33) to promote solid-liquid separation in the wastewater.

2. The equipment for treating fly ash from municipal solid waste incineration according to claim 1, characterized in that: The driving component (32) includes: A drive gear ring (321) is rotatably connected to the support bracket (31); The driven wheel (322) has a plurality of driven wheels (322) arranged at circumferential intervals along the drive gear ring (321), wherein each driven wheel (322) meshes with the drive gear ring (321), and the receiving cylinder (33) is connected to the driven wheel (322); A drive wheel (323) is provided, and there is a gap between the plurality of driven wheels (322). The drive wheel (323) is rotatably connected within the gap and meshes with each of the driven wheels (322). The first power component (324) is used to drive the drive wheel (323) to rotate. The second power member (325) is used to rotate the plurality of driven wheels (322).

3. The equipment for treating fly ash from municipal solid waste incineration according to claim 2, characterized in that: The first power component (324) includes: The first rotating shaft (3241) is rotatably connected to the receiving bracket (31), and the axial direction of the first rotating shaft (3241) is the same as the axial direction of the receiving cylinder (33). The first motor (3242) is used to drive the first rotating shaft (3241) to rotate.

4. The equipment for treating fly ash from municipal solid waste incineration according to claim 2, characterized in that: The second power component (325) includes: The second rotating shaft (3251) has one end rotatably connected to the receiving bracket (31), and the axial direction of the second rotating shaft (3251) is the same as the axial direction of the receiving cylinder (33). A power support (3252) is connected to the other end of the second rotating shaft (3251), wherein the power support (3252) has a plurality of connecting parts (3253) corresponding to the driven wheel (322); the power support (3252) is connected to the driven wheel (322) through the connecting parts (3253); The second motor (3254) is used to drive the second rotating shaft (3251) to rotate.

5. The equipment for treating fly ash from municipal solid waste incineration according to claim 1, characterized in that: The blocking member (34) includes: Baffle plate (341); A drive source (342), connected to the baffle plate (341), is used to drive the baffle plate (341) to move along the axial direction of the first cylindrical section (331) to isolate or open the first cylindrical section (331) from the second cylindrical section (332); the drive source (342) is also used to drive the baffle plate (341) to move along a first direction, wherein the axial direction of the first cylindrical section (331) is perpendicular to the first direction.

6. The equipment for treating fly ash from municipal solid waste incineration according to claim 5, characterized in that: The driving source (342) includes: A drive screw (3421) is rotatably connected inside the second cylindrical section (332), and the axial direction of the drive screw (3421) is perpendicular to the axial direction of the first cylindrical section (331). The first slider (3422) and the second slider (3423) are disposed on the drive screw (3421); the baffle plate (341) is disposed on the side of the first slider (3422) and the second slider (3423) away from the bottom wall of the second cylindrical section (332); A drive motor (3424) is used to drive the drive screw (3421) to rotate; A guide (3425) is used to guide the movement of the baffle (341); Wherein, the distance between the top surface of the first slider (3422) and the bottom wall of the second cylindrical section (332) is greater than the distance between the top surface of the second slider (3423) and the bottom wall of the second cylindrical section (332). The bottom wall of the baffle plate (341) is provided with a protrusion that cooperates with the first slider (3422). This is so that when the first slider (3422) approaches the second slider (3423), the baffle plate (341) is lifted, thereby sealing the first cylindrical section (331) and the second cylindrical section (332). The first slider (3422) and the second slider (3423) are connected by a connector.

7. The equipment for treating fly ash from municipal solid waste incineration according to claim 1, characterized in that: The processing device also includes an extraction unit (4); The extraction unit (4) includes an extraction bracket (41), an extraction pump (42), an extraction tube (43), and a lifting assembly (44); The extraction bracket (41) is disposed on one side of the receiving bracket (31); The extraction tube (43) is connected to the lifting assembly (44) and moves through the lifting assembly (44). The direction of movement of the extraction tube (43) is the same as the axial direction of the receiving cylinder (33). The extraction pump (42) is connected to the extraction pipe (43) and is used to extract the liquid in the receiving cylinder (33) when the extraction pipe (43) is inserted into the receiving cylinder (33).

8. The equipment for treating fly ash from municipal solid waste incineration according to claim 5, characterized in that: The processing equipment also includes an adsorption unit (5); The second cylindrical section (332) has an outlet (3321); The baffle plate (341) can be moved to the outlet (3321) by the drive source (342), and the adsorption unit (5) is located at the outlet (3321). The adsorption unit (5) is used to adsorb and collect solid waste on the baffle plate (341).

9. A method for treating fly ash from municipal solid waste incineration, applied to the municipal solid waste incineration fly ash treatment equipment as described in any one of claims 1 to 8, characterized in that: The processing method includes: The fly ash flue gas is connected to the spray unit (2), which sprays the fly ash flue gas to form wastewater. The wastewater is then fed into the receiving cylinder (33); Solvent is added into the receiving cylinder (33) to achieve solid-liquid separation of the wastewater; The liquid in the receiving cylinder (33) is extracted and the solid is collected.

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