Pyrolysis fly ash recycling production system
By coupling the water washing section in the fly ash detoxification process with the resource utilization production line, the simultaneous water washing and mixing of fly ash and ingredients are achieved, solving the problems of large water consumption and additional mixing devices in the existing technology, and realizing cost reduction and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JINGLAN LOW CARBON TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-28
AI Technical Summary
In existing technologies, after fly ash detoxification treatment, an additional mixer is required for stirring, which consumes a large amount of water and involves complicated procedures, resulting in high costs.
The water washing section in the fly ash detoxification process is coupled with the resource utilization production line. The fly ash and ingredients are mixed and washed by the stirring component in the water washing tank, which reduces water consumption and eliminates the need for additional stirring devices. Three-stage water washing and vacuum belt dewatering machine are used for dewatering.
It simplified the process, reduced operating costs, decreased water consumption, and improved production efficiency.
Smart Images
Figure CN224168314U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fly ash recycling technology, and in particular to a pyrolysis fly ash resource production system. Background Technology
[0002] Municipal solid waste incineration fly ash (hereinafter referred to as fly ash) is the ash collected by the flue gas purification system of municipal solid waste incineration plants and the bottom ash that settles at the bottom of the flue and chimney. In related technologies, the treatment of this fly ash mainly involves detoxification treatment, which includes two processes. First, dioxins in the fly ash are removed using low-temperature pyrolysis technology to obtain pyrolytic fly ash. Then, the pyrolytic fly ash is washed with water to remove heavy metals and obtain detoxified fly ash.
[0003] The detoxified fly ash obtained can be used as some building materials. It can be mixed with mineral powder, fly ash, gypsum and other solid wastes, molded and cured to prepare aggregates or blocks, thus realizing the resource utilization of fly ash.
[0004] In short, this method involves two independent production lines: one is a fly ash detoxification production line, which detoxifies fly ash to obtain detoxified fly ash; the other is a resource-based production line, which mixes and processes the obtained detoxified fly ash with ingredients to produce the desired product (such as building blocks).
[0005] This method consumes a relatively large amount of water, and because the fly ash is mixed with other solid waste after detoxification treatment (i.e., detoxified fly ash), an additional mixer is usually required to mix the detoxified fly ash with other solid waste. Therefore, improvements are needed. Utility Model Content
[0006] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a pyrolysis fly ash resource production system.
[0007] To achieve the above objectives, this application provides the following technical solution.
[0008] A pyrolysis fly ash resource utilization production system, comprising:
[0009] The washing system includes several washing tanks arranged sequentially. The pyrolysis fly ash is washed sequentially through each washing tank. Each washing tank is equipped with a first stirring component. A solid-liquid separation device is provided between two adjacent washing tanks. The solid-liquid separation device is used to separate the solid and liquid of the output liquid from the upstream washing tank to obtain filter residue and filtrate, and then transport the filter residue to the downstream washing tank for washing.
[0010] A dewatering device is located downstream of the mixing and washing tank and is used to dewater the mixture output from the mixing and washing tank to obtain a slurry.
[0011] The molding system, located downstream of the dewatering unit, is used to solidify the slurry output from the dewatering unit into precast components.
[0012] Compared with existing technologies, the advantages of this solution are:
[0013] In this solution, the washing section (i.e., the washing system) of the originally independent fly ash detoxification production line is coupled with the fly ash resource utilization production line. That is, during the washing process of pyrolysis fly ash, ingredients can be added for mixing and stirring. In other words, the mixing and washing tank is used for both washing pyrolysis fly ash and stirring and mixing fly ash with other ingredients. In this way, water consumption can be reduced because the water used for washing in the mixing and washing tank can directly participate in the stirring and mixing of fly ash and ingredients.
[0014] Secondly, there is no need to set up an additional stirring device to mix the fly ash and ingredients, because the washing tank usually has a built-in stirring component.
[0015] Finally, this coupling method can shorten the process and reduce operating costs.
[0016] As an optional embodiment of this application, the solid-liquid separation device includes a filter press; and / or the dewatering device is a vacuum belt dewatering machine.
[0017] As an optional embodiment of this application, a sedimentation tank is provided between the mixing washing tank and the dewatering device, and the mixed material output from the mixing washing tank is conveyed to the dewatering device after sedimentation in the sedimentation tank.
[0018] As an optional implementation of this application, the production system further includes:
[0019] The first feeding device is used to transport pyrolysis fly ash to the upstream washing tank;
[0020] The second feeding device is connected to the feeding side of the mixing and washing tank and is used to transport fly ash into the mixing and washing tank.
[0021] The third feeding device is connected to the feed side of the mixing and washing tank and is used to transport mineral powder into the mixing and washing tank.
[0022] The fourth feeding device is connected to the feed side of the mixing and washing tank and is used to transport gypsum into the mixing and washing tank.
[0023] As an optional embodiment of this application, the first feeding device and / or the second feeding device and / or the third feeding device include:
[0024] Temporary storage warehouse, used for temporarily storing materials;
[0025] The first conveyor is used to transport materials output from the temporary storage bin;
[0026] The weighing bin is connected to the first conveyor and is used to receive the material conveyed by the first conveyor and weigh the material.
[0027] The second conveyor is used to transport the materials output from the weighing bin.
[0028] As an optional embodiment of this application, the second conveyor is a twin-shaft screw conveyor, and / or the fourth feeding device includes a belt conveyor.
[0029] As an optional embodiment of this application, the washing tank includes three tanks, namely a primary washing tank, a secondary washing tank, and a tertiary washing tank, wherein the tertiary washing tank constitutes the mixing washing tank; the solid-liquid separation device includes two devices, one of which is disposed between the primary washing tank and the secondary washing tank to form a first solid-liquid separation device, and the other of which is disposed between the secondary washing tank and the tertiary washing tank to form a second solid-liquid separation device.
[0030] As an optional embodiment of this application, the water washing system further includes:
[0031] The primary filtrate tank is used to receive the filtrate output from the first solid-liquid separation device;
[0032] The secondary filtrate tank is used to receive the filtrate output from the second solid-liquid separation device, and the secondary filtrate tank is connected to the primary water washing tank.
[0033] The three-stage filtrate tank is used to receive the filtrate output from the dehydration device, and the three-stage filtrate tank is connected to the two-stage washing tank.
[0034] As an optional embodiment of this application, the primary filtrate tank, the secondary filtrate tank, and the tertiary filtrate tank are all equipped with a second stirring component.
[0035] As an optional embodiment of this application, the molding system includes:
[0036] A concrete feeding machine is used to receive slurry output from a dewatering device and to pour and distribute the slurry into molds for forming precast components.
[0037] Conveyor lines are used to transport molds filled with slurry to the stacking station;
[0038] A palletizer is installed at the palletizing station and is used to palletize molds.
[0039] The curing room is used to cure the prefabricated components in the mold after stacking.
[0040] Other advantages and effects of this application are explained in detail in the Detailed Description and Drawings sections.
[0041] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description
[0042] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:
[0043] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
[0044] Figure 1 A schematic diagram of the structure of this application is shown. Detailed Implementation
[0045] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0046] This embodiment provides a pyrolysis fly ash resource utilization production system. To facilitate understanding, this embodiment first explains the relevant technical terms.
[0047] Pyrolysis fly ash refers to fly ash that has undergone low-temperature pyrolysis. Specifically, fly ash from municipal solid waste incineration generally requires detoxification treatment, which mainly involves two steps:
[0048] The first step is to perform low-temperature thermal decomposition on the incineration fly ash to remove dioxins and obtain pyrolytic fly ash. Specifically, low-temperature thermal decomposition involves heating the waste incineration fly ash through low-temperature thermal decomposition equipment in an inert atmosphere that maintains oxygen-free conditions, inducing the decomposition of organic pollutants such as dioxins, and achieving detoxification of persistent organic pollutants.
[0049] Fly ash is added to a low-temperature pyrolysis furnace, nitrogen is introduced to maintain an inert and oxygen-free atmosphere, and the temperature is raised to 300℃~400℃ for 60min~90min; this induces the decomposition of organic pollutants and causes dioxins to undergo dechlorination / condensation reactions.
[0050] The phenyl parent compound undergoes a dechlorination / condensation reaction, breaking the C-Cl bond and decomposing to degrade persistent organic pollutants such as dioxins into non-toxic and harmless polymers (ultimately amorphous carbon), thus mitigating the environmental impact of persistent organic pollutants. Simultaneously, the alkaline atmosphere within the low-temperature pyrolysis furnace strongly neutralizes the volatile acidic gases such as HF, HCl, and SOx generated during decomposition. The chloride salts produced are more easily leached and separated. After the dechlorination reaction is complete, the mixture must be rapidly cooled to below 150°C in an oxygen-free, inert atmosphere to effectively inhibit the resynthesis of dioxins.
[0051] Activated carbon is sprayed into the flue gas duct after the reaction tower to absorb dioxins in the flue gas, and then passes through a dust collector to ensure sufficient adsorption.
[0052] The second step is to wash the pyrolysis fly ash obtained in the first step with water to remove heavy metals, thus obtaining detoxified fly ash. The principle is as follows: the pyrolysis fly ash and water are mixed, and the soluble salts and soluble heavy metals in the ash dissolve in the aqueous phase. Then, water-solid separation is performed through equipment to transfer the salts in the ash to the water, thereby achieving the purpose of water washing.
[0053] After heavy metals dissolve in the aqueous phase, they enter the subsequent water treatment system for treatment, mainly for removal in the sedimentation stage. By adjusting the pH to the optimal pH for heavy metal precipitation, the heavy metal ions are generated into heavy metal hydroxides and precipitate under the optimal precipitation pH conditions. The addition of ferric chloride coagulant produces a coagulation effect, causing the fine particles of heavy metal hydroxides to adhere and bind to the ferric hydroxide flocs, thereby achieving removal through solid precipitation.
[0054] Resource utilization refers to the recycling and processing of detoxification fly ash into other resource materials. For example, in this embodiment, detoxification fly ash is mainly mixed with gypsum, fly ash, and mineral powder to produce building materials such as blocks and aggregates.
[0055] The pyrolysis fly ash resource utilization production system provided in this embodiment is mainly obtained by coupling the water washing section in the fly ash detoxification process with the detoxified fly ash resource utilization production line. Specifically:
[0056] like Figure 1 As shown, the pyrolysis fly ash resource utilization production system provided in this embodiment includes a water washing system, a dewatering device 62, and a forming system, etc. The following is a detailed description of each component:
[0057] The water washing system is mainly used to wash pyrolysis fly ash to remove heavy metals and other substances from it.
[0058] The washing system includes several washing tanks arranged in sequence, and the pyrolysis fly ash is washed in each washing tank in sequence. A solid-liquid separation device is provided between two adjacent washing tanks. The solid-liquid separation device is used to separate the solid and liquid of the output liquid from the upstream washing tank to obtain filter residue and filtrate, and then transport the filter residue to the downstream washing tank for washing.
[0059] It is worth noting that existing fly ash washing tanks are generally equipped with a stirring component, which performs washing through the stirring action of the stirring component; for the purpose of distinction, the stirring component in the washing tank in this embodiment is referred to as the first stirring component J1.
[0060] In addition, among the washing tanks, the washing tank at the lowest end constitutes the mixing washing tank; the mixing washing tank includes a feeding side for feeding ingredients, and the materials entering the mixing washing tank are stirred and mixed by the first stirring component J1 to obtain a mixture.
[0061] As a specific implementation method, this embodiment specifically demonstrates, such as Figure 1 As shown, in the case of using three washing tanks and two solid-liquid separation devices, the three washing tanks are sequentially designated as primary washing tank 11, secondary washing tank 12, and tertiary washing tank 13, thus achieving three-stage washing.
[0062] The three-stage washing tank 13 constitutes the aforementioned mixing washing tank; there are two solid-liquid separation devices, one of which is located between the first-stage washing tank 11 and the second-stage washing tank 12 to form the first solid-liquid separation device, and the other is located between the second-stage washing tank 12 and the three-stage washing tank 13 to form the second solid-liquid separation device.
[0063] In some embodiments, each solid-liquid separation device may be a filter press, such as a plate filter press; for the purpose of distinction, in this embodiment the first solid-liquid separation device is a first filter press 41 and the second solid-liquid separation device is a second filter press 42.
[0064] The washing process is as follows:
[0065] like Figure 1 As shown, pyrolysis fly ash is fed into a primary washing tank 11 for washing. Then, the liquid in the primary washing tank 11 is pumped to a first filter press 41 by a first pump 31. The first filter press 41 is used to filter the solid and liquid to obtain filter residue and filtrate. The filter residue output from the first filter press 41 is fed into a secondary washing tank 12 for washing again. Then, the liquid in the secondary washing tank 12 is pumped to a second filter press 42 by a second pump 32. The second filter press 42 is used to filter the solid and liquid again to obtain filter residue and filtrate. The filter residue output from the second filter press 42 is fed into a tertiary washing tank 13 (i.e., a mixing washing tank) for washing.
[0066] During the washing process in the three-stage washing tank 13, relevant ingredients can be added to the three-stage washing tank 13. Through the stirring of the first stirring component J1 inside the three-stage washing tank 13, the ingredients and fly ash in the three-stage washing tank 13 are stirred and mixed to obtain a mixture. In this embodiment, taking the final formed blocks or aggregates as an example, the relevant ingredients are mainly fly ash, gypsum, and mineral powder.
[0067] As can be seen, in this embodiment, the three-stage washing tank 13 (i.e. the mixing washing tank) is used for both washing the pyrolysis fly ash and mixing the fly ash with other ingredients. In this way, the amount of water used can be reduced, because the water used for washing in the mixing washing tank can directly participate in the mixing of fly ash and ingredients.
[0068] The dewatering device 62 is located downstream of the three-stage washing tank 13 and is used to dewater the mixture output from the three-stage washing tank 13 to obtain slurry. In some embodiments, the dewatering device 62 is preferably a vacuum belt dewatering machine. Such a dewatering machine is described in detail in the prior art and will not be elaborated on here.
[0069] Specifically, in this embodiment, the selected vacuum belt dewatering machine has the following parameters: PET filter cloth is used, with the filter cloth material being monofilament to reduce clogging; the vacuum degree is 0.06 MPa-0.08 MPa. The moisture content of the dewatered slurry is ≤20%.
[0070] Of course, in some other alternative embodiments, the dewatering device 62 may also be a filter press or other similar device, which is not specifically limited here.
[0071] The molding system is located downstream of the dewatering device 62 and is used to solidify the slurry output from the dewatering device 62 to form precast components, which are mainly precast blocks.
[0072] Specifically, the molding system includes a fabric feeding machine 71, a conveyor line 72, a palletizer 73, and a curing chamber (not shown in the figure).
[0073] It is understandable that the molding of prefabricated components requires the provision of molds for molding the prefabricated components.
[0074] The cloth feeding machine 71 is used to receive the slurry output from the dewatering device 62 and to pour the slurry evenly into the mold for forming precast components.
[0075] The palletizer 73 is located at the palletizing station and is used to stack the molds after casting.
[0076] Conveyor line 72 is used to transport molds filled with slurry to the stacking station.
[0077] The curing room is used to cure the prefabricated components in the mold after stacking.
[0078] The specific process is as follows: Figure 1 As shown, the slurry output from the dewatering device 62 enters the concrete placing machine 71, which then distributes the slurry into the molds placed on the conveyor line 72. The conveyor line 72 then transports the cast molds to the stacking machine 73 for stacking. The stacked molds are then transferred to the curing chamber for curing. After curing, demolding yields the precast components (i.e., blocks).
[0079] To obtain aggregates, simply crush and screen the obtained blocks.
[0080] During the above process, after the slurry is poured into the mold, there will be many small pores in the material. If it solidifies directly, it will affect the strength of the molded product.
[0081] Based on this, in order to reduce the generation of air holes, in some embodiments, the conveyor line 72 adopts a vibrating conveyor line. Specifically, the conveyor line 72 includes a conveyor belt and a vibrating motor. The vibrating motor is installed on the conveyor belt to drive the conveyor belt to vibrate. It can be understood that the vibrating motor is not directly installed on the surface of the conveyor belt, but can be installed on the frame of the conveyor belt. In this way, the working vibration of the vibrating motor drives the entire conveyor belt to vibrate, thereby driving the mold on the conveyor belt to vibrate, so as to reduce the generation of air holes.
[0082] In some embodiments, in order to reduce the burden on the dehydration device 62, such as Figure 1 As shown, a sedimentation tank 61 is provided between the three-stage washing tank 13 and the dewatering device 62. The mixture output from the three-stage washing tank 13 is pumped to the sedimentation tank 61 by the third pump 33 and settled for a period of time. Afterwards, a portion of the supernatant in the sedimentation tank 61 is pumped away, which can reduce the water content of the mixture. Then, the settled mixture is transported to the dewatering device 62 for dewatering, which can reduce the burden on the dewatering device 62.
[0083] like Figure 1 As shown, this system also includes:
[0084] The first feeding device 51 is used to transport pyrolysis fly ash to the upstream washing tank (i.e., the first-stage washing tank 11).
[0085] The second feeding device 52 is connected to the feeding side of the tertiary washing tank 13 and is used to transport fly ash into the tertiary washing tank 13.
[0086] The third feeding device 53 is connected to the feeding side of the three-stage washing tank 13 and is used to transport mineral powder into the three-stage washing tank 13.
[0087] The fourth feeding device 54 is connected to the feeding side of the three-stage washing tank 13 and is used to transport gypsum into the mixing washing tank. In some embodiments, the fourth feeding device 54 may be a belt conveyor.
[0088] In some embodiments, the first feeding device 51, the second feeding device 52, and the third feeding device 53 have basically the same structure, mainly including a temporary storage bin 501, a weighing bin 503, a first conveyor 502, and a second conveyor 504.
[0089] Temporary storage bin 501 is used to temporarily store materials; for example, in this embodiment, the temporary storage bin 501 of the first feeding device 51 is used to temporarily store pyrolysis fly ash; the temporary storage bin 501 of the second feeding device 52 is used to temporarily store fly ash; and the temporary storage bin 501 of the third feeding device 53 is used to temporarily store mineral powder.
[0090] The first conveyor 502 is used to transport the material output from the temporary storage bin 501 to the weighing bin 503. The first conveyor 502 can be a screw conveyor.
[0091] The weighing bin 503 is connected to the first conveyor 502 to receive the material conveyed by the first conveyor 502 and weigh the material. In this way, the material of a set weight can be weighed by the weighing bin 503 and sent to the second conveyor 504.
[0092] The second conveyor 504 is used to convey the material output from the weighing bin 503. Specifically, in this embodiment:
[0093] The second conveyor 504 in the first feeding device 51 transports pyrolysis fly ash into the first-stage washing tank 11;
[0094] The second conveyor 504 in the second feeding device 52 transports fly ash into the three-stage washing tank 13;
[0095] The second conveyor 504 in the third feeding device 53 transports the mineral powder to the three-stage washing tank 13.
[0096] Since pyrolysis fly ash, fly ash, mineral powder, etc. are all powders, these powders will float on the water surface after entering the washing tank, which is not conducive to mixing. Therefore, it is usually necessary to granulate the powders first. Based on this, in this embodiment, the second conveyor 504 is preferably a twin-shaft screw conveyor, which has a granulation function.
[0097] In this embodiment, the water washing system further includes:
[0098] The primary filter tank 21 is used to receive the filtrate output from the first filter press 41. The filtrate in the primary filter tank 21 is drawn by the fourth pump 34 to the water treatment system for processing.
[0099] The secondary filter tank 22 is used to receive the filtrate output from the second filter press 42. The secondary filter tank 22 is connected to the primary washing tank 11 through a pipeline. A fifth pump 35 is installed on the pipeline. The filtrate in the secondary filter tank 22 can be drawn into the primary washing tank 11 by the fifth pump 35 to replenish the primary washing tank 11, thereby reducing the water consumption.
[0100] The third-stage filtrate tank 23 is used to receive the filtrate output by the dehydration device 62, and the third-stage filtrate tank 23 is connected to the second-stage washing tank 12 through a pipeline. A sixth pump 36 is provided on the pipeline, so that the filtrate output by the dehydration device 62 can be drawn into the second-stage washing tank 12 through the sixth pump 36 to replenish the water in the second-stage washing tank 12.
[0101] In addition, in this embodiment, each of the primary filtrate tank 21, the secondary filtrate tank 22, and the tertiary filtrate tank 23 is equipped with a second stirring component J2. By setting the stirring of the second stirring component, excessive sedimentation in each filtrate tank is prevented from affecting the pumping efficiency.
[0102] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.
[0103] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0104] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A pyrolysis fly ash resource utilization production system, characterized in that, include: A water washing system, comprising a plurality of water washing tanks arranged in sequence, wherein the pyrolysis fly ash is washed in each water washing tank in a step-by-step manner. A solid-liquid separation device is provided between two adjacent washing tanks. The solid-liquid separation device is used to separate the solid and liquid of the output liquid from the upstream washing tank to obtain filter residue and filtrate, and then transport the filter residue to the downstream washing tank for washing. Among the washing tanks, the downstream washing tank constitutes a mixing washing tank. A first stirring component is provided inside the washing tank. The mixing washing tank includes a feed side for feeding ingredients, and the first stirring component stirs and mixes the materials entering the mixing washing tank to obtain a mixture. A dewatering device is located downstream of the mixing and washing tank and is used to dewater the mixture output from the mixing and washing tank to obtain a slurry. The molding system, located downstream of the dewatering unit, is used to solidify the slurry output from the dewatering unit into precast components.
2. The pyrolysis fly ash resource utilization production system according to claim 1, characterized in that, The solid-liquid separation device includes a filter press; and / or the dewatering device is a vacuum belt dewatering machine.
3. A pyrolysis fly ash resource utilization production system according to claim 1 or 2, characterized in that, A sedimentation tank is provided between the mixing and washing tank and the dewatering device. The mixture output from the mixing and washing tank is transported to the dewatering device after sedimentation in the sedimentation tank.
4. The pyrolysis fly ash resource utilization production system according to claim 1, characterized in that, The production system also includes: The first feeding device is used to transport pyrolysis fly ash to the upstream washing tank; The second feeding device is connected to the feeding side of the mixing and washing tank and is used to transport fly ash into the mixing and washing tank. The third feeding device is connected to the feed side of the mixing and washing tank and is used to transport mineral powder into the mixing and washing tank. The fourth feeding device is connected to the feed side of the mixing and washing tank and is used to transport gypsum into the mixing and washing tank.
5. The pyrolysis fly ash resource utilization production system according to claim 4, characterized in that, The first feeding device and / or the second feeding device and / or the third feeding device include: Temporary storage warehouse, used for temporarily storing materials; The first conveyor is used to transport materials output from the temporary storage bin; The weighing bin is connected to the first conveyor and is used to receive the material conveyed by the first conveyor and weigh the material. The second conveyor is used to transport the materials output from the weighing bin.
6. The pyrolysis fly ash resource utilization production system according to claim 5, characterized in that, The second conveyor is a twin-shaft screw conveyor, and / or the fourth feeding device includes a belt conveyor.
7. The pyrolysis fly ash resource utilization production system according to claim 1, characterized in that, The washing tanks include three tanks, namely a primary washing tank, a secondary washing tank, and a tertiary washing tank, wherein the tertiary washing tank constitutes the mixing washing tank; the solid-liquid separation device includes two devices, one of which is located between the primary washing tank and the secondary washing tank to form a first solid-liquid separation device, and the other of which is located between the secondary washing tank and the tertiary washing tank to form a second solid-liquid separation device.
8. The pyrolysis fly ash resource utilization production system according to claim 7, characterized in that, The water washing system also includes: The primary filtrate tank is used to receive the filtrate output from the first solid-liquid separation device; The secondary filtrate tank is used to receive the filtrate output from the second solid-liquid separation device, and the secondary filtrate tank is connected to the primary water washing tank. The third-stage filtrate tank is used to receive the filtrate output from the dehydration device, and the third-stage filtrate tank is connected to the second-stage washing tank.
9. A pyrolysis fly ash resource utilization production system according to claim 8, characterized in that, Each of the primary, secondary, and tertiary filtrate tanks is equipped with a second stirring component.
10. The pyrolysis fly ash resource utilization production system according to claim 1, characterized in that, The molding system includes: A concrete feeding machine is used to receive slurry output from a dewatering device and to pour and distribute the slurry into molds for forming precast components. Conveyor lines are used to transport molds filled with slurry to the stacking station; A palletizer is installed at the palletizing station and is used to palletize molds. The curing room is used to cure the prefabricated components in the mold after stacking.