Waste incineration fly ash recycling product production system

Abstract

The utility model relates to the field of solid waste resource utilization, in particular to a waste incineration fly ash resource product production system which comprises a material storage system used for storing raw materials; the stirring system is arranged at the downstream of the material storage system and used for stirring the raw materials, and the stirring system comprises a stirrer; the forming system is arranged on the downstream of the stirring system and comprises a mold used for forming the prefabricated part and a conveying line, the raw materials are conveyed by the conveying line after being poured into the mold, and the conveying line can vibrate the mold during conveying; the curing system is arranged on the downstream of the material distribution forming system and used for curing the prefabricated part in the mold, and the prefabricated part is obtained after the mold is demolded; fly ash recycling can be achieved, and when the conveying line conveys the molds, the molds can be driven to vibrate, so that air holes mingled in materials in the molds are reduced, and the compactness of follow-up formed products is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of solid waste resource utilization, in particular to a waste incineration fly ash resource product production system. BACKGROUND

[0002] Waste incineration fly ash (referred to as fly ash) is the bottom ash collected by the flue gas purification system of a waste incineration plant and the bottom ash settled at the bottom of the flue and chimney. The fly ash contains organic pollutants such as dioxins and heavy metals such as Cr, Cd, and Hg, and is a hazardous waste.

[0003] The annual emission of incineration fly ash is huge, but the resource utilization rate is very low. The environmental and social development problems caused by the fly ash disposal methods of landfill and cement kiln cooperation are serious.

[0004] Therefore, with the prevalence of the concept of low carbon and sustainable development, how to make incineration fly ash resourceful has become a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of the present application is to provide a waste incineration fly ash resource product production system.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0007] A waste incineration fly ash resource product production system, comprising:

[0008] A storage system for storing raw materials;

[0009] A stirring system provided downstream of the storage system for stirring the raw materials, the stirring system comprising a stirrer;

[0010] A forming system provided downstream of the stirring system, comprising a mold for forming a precast component and a conveying line, the raw materials are poured into the mold and then conveyed by the conveying line, wherein the conveying line can vibrate the mold during conveying;

[0011] A curing system provided downstream of the material forming system for curing the precast component in the mold, and the precast component is obtained after the mold is demolded.

[0012] As an optional embodiment of the present application, the production system further comprises:

[0013] A crushing system provided downstream of the curing system for crushing the precast component, comprising a crusher;

[0014] A screening system provided downstream of the crushing system, comprising a vibrating screen, for screening the particles after the precast component is crushed to obtain an artificial aggregate product.

[0015] As an optional embodiment of the present application, a second elevator is arranged downstream of the screening system, and the second elevator is used to lift the particles screened by the screening system into the crushing system.

[0016] As an optional embodiment of the present application, the conveying line comprises a conveying belt and a vibrating motor, and the vibrating motor is arranged on the conveying belt to drive the conveying belt to vibrate.

[0017] As an optional embodiment of the present application, the storage system comprises a plurality of storage units, and each storage unit comprises a barrel and a first conveyor used to output the material in the barrel, and the feeding port of the first conveyor is connected to the discharging port of the barrel.

[0018] As an optional embodiment of the present application, the storage system further comprises a first weighing system used to weigh the material output by the first conveyor.

[0019] As an optional embodiment of the present application, the production system further comprises a second weighing system used to weigh the fly ash.

[0020] As an optional embodiment of the present application, the production system further comprises a first elevator used to lift the material weighed by the second weighing system into the mixer.

[0021] As an optional embodiment of the present application, the forming system further comprises a palletizer arranged on the discharging side of the conveying line and used to palletize the mold output by the conveying line.

[0022] As an optional embodiment of the present application, the forming system further comprises a distributing device, and the distributing device comprises a hopper and a second conveyor, the hopper is used to receive the material output by the mixer, and the material output by the hopper is arranged in the mold by the second conveyor.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The present application can process the detoxified fly ash into prefabricated components and / or artificial aggregate products, so as to realize the resource utilization of fly ash.

[0025] Moreover, in the present application, the raw material is arranged in the mold, and then the mold is conveyed by the vibrating conveying line, so that the mold can be vibrated when the mold is conveyed by the conveying line, thereby reducing the air holes in the material in the mold, and further improving the compactness of the subsequent formed product.

[0026] It is to be understood that the description of the contents of this section is not intended to identify key or essential features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0028] In the drawings, identical or corresponding reference signs indicate identical or corresponding parts.

[0029] Figure 1 A flowchart of the present application is shown;

[0030] Figure 2 A structural diagram of the molding system of the present application is shown.

[0031] Explanation of reference signs in the drawings:

[0032] 100, storage system; 11, barrel; 12, first conveyor; 13, industrial water tank; 14, water scale; 15, powder weighing and metering bin;

[0033] 200, belt metering scale;

[0034] 300, first elevator;

[0035] 400, curing system; 41, curing chamber;

[0036] 500, mixer;

[0037] 600, molding system; 61, conveyor belt; 62, palletizer; 63, distributing device; 631, hopper; 632, second conveyor;

[0038] 700, crusher;

[0039] 800, vibrating screen; 81, belt conveyor; 82, second elevator; 83, electric hoist. DETAILED DESCRIPTION

[0040] In order to make the purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Referring to Figure 1 and Figure 2 As shown in the drawings, the embodiment provides a waste incineration fly ash resource product production system, which can be used to process waste incineration fly ash (hereinafter referred to as fly ash) into building materials, such as prefabricated components, aggregates, etc.; for example, fly ash, fly ash, mineral powder, gypsum, industrial tap water are processed to obtain the aforementioned building materials.

[0042] The production system mainly includes a storage system 100, a stirring system, a forming system 600, and a curing system 400.

[0043] As shown in Figure 1 , the storage system 100 is used to store raw materials, and in some embodiments, the storage system 100 includes several storage units, for example, in this embodiment, the storage unit includes two, and the two storage units are used to store fly ash and mineral powder respectively.

[0044] Since the structures of the storage units are basically the same, this embodiment will be described in detail taking one of them as an example:

[0045] As shown in Figure 1 , the storage unit includes a barrel 11 and a first conveyor 12 for outputting the material in the barrel 11, the material is stored in the barrel 11, and the feed inlet of the first conveyor 12 is connected to the discharge port of the barrel 11. The first conveyor 12 can adopt a screw conveyor. It can be understood that a discharge valve is provided between the discharge port of the barrel 11 and the feed inlet of the first conveyor 12, when it is needed to discharge, the discharge valve and the first conveyor 12 are opened, the material in the barrel 11 flows into the first conveyor 12 from the discharge port and is conveyed forward by the first conveyor 12, and finally enters the stirring system.

[0046] Among them, the barrel 11 is a vertical silo with arch breaking, fluidization, dust removal equipment and material level meter control device, wherein the arch breaking and fluidization equipment mainly functions to prevent powder or particulate material from caking, blocking and other problems during storage and conveying, and to ensure smooth flow of the material.

[0047] In addition, the storage system 100 also includes a first weighing system, wherein the first weighing system can adopt an existing powder weighing and metering bin 15, and the first weighing system is mainly used for weighing the material output by the first conveyor 12, so as to obtain the required weight of the material. The discharge ports of each first conveyor 12 are connected to the same weighing and metering bin.

[0048] Of course, in other some alternative embodiments, the first weighing system can also adopt a conventional weighing scale that can weigh, to weigh the material output by each first conveyor 12 respectively.

[0049] Further, the production system provided by the embodiment further comprises a second weighing system for weighing the fly ash and the first elevator 300; in some embodiments, the second weighing system comprises two belt weighers 200, one of which is used for weighing the fly ash and the other of which is used for weighing the gypsum. The gypsum and the fly ash weighed by the two belt weighers 200 are lifted to the stirring system by the first elevator 300.

[0050] It should be noted that the fly ash here is fly ash that has been treated by a fly ash detoxification system. In the related art, fly ash detoxification mainly uses heat treatment, water washing and other treatment processes to remove pollutants such as dioxins, heavy metals and soluble chlorides in waste incineration fly ash to become detoxified fly ash, and the detoxified fly ash is then used for downstream resource utilization.

[0051] Further, as shown in Figure 1 the embodiment further comprises an industrial water tank 13, a water pump and a water scale 14, which are in communication with industrial tap water and are used for temporarily storing industrial tap water; the water inlet end of the water pump is in communication with the industrial water tank 13 and is used for pumping the industrial tap water temporarily stored in the industrial water tank 13 to the water scale 14 for weighing and then introducing the industrial tap water into the stirring system.

[0052] The stirring system is arranged downstream of the storage system 100 and is used for stirring the raw materials. The stirring system comprises a stirrer 500, for example, a vertical shaft planetary stirrer 500. Specifically, the weighed fly ash, gypsum, mineral powder, fly ash and industrial tap water are introduced into the stirring system for stirring and mixing to obtain a mixture.

[0053] The forming system 600 is arranged downstream of the stirring system and comprises a conveying line, a mold, a palletizer 62 and a distributing device 63.

[0054] The mold is mainly used for forming prefabricated components (such as bricks, blocks, etc.). The mixture output by the stirrer 500 is poured into the mold through the distributing device 63.

[0055] The conveying line is mainly used for conveying the mold forward to convey the poured mold to the palletizer 62, and the palletizer 62 is used for palletizing the mold.

[0056] As shown in Figure 2 the distributing device 63 comprises a hopper 631 and a second conveyor 632, wherein the second conveyor 632 can be a screw conveyor. The hopper 631 is used for receiving the material output by the stirrer 500, and the second conveyor 632 is used for distributing the material output by the hopper 631 into the mold, that is, the mixture output by the stirrer 500 is poured into the hopper 631, and then the mixture in the hopper 631 is poured onto the mold on the conveying belt 61 by the second conveyor 632 for pouring. After the mold is poured, the mold is conveyed to the palletizer 62 by the conveying belt 61 for palletizing by the palletizer 62.

[0057] It is worth mentioning that the fly ash, slag and other solid waste based gel materials are used as ingredients in the embodiment to produce and form, and the solid waste based gel materials are different from the traditional concrete block / brick forming when pouring and forming. In the traditional concrete block / brick forming, the cement and other materials are quickly absorbed and solidified through hydration reaction, so that the pressure forming can be directly performed after the mixing and pouring in the mold. However, for the solid waste based gel materials, the mutual excitation reaction between the solid waste based gel materials is slow, and a certain water content needs to be maintained during the process to fully react. In addition, after pouring in the mold, there are many small pores in the material, and if it is directly solidified, it will affect the strength of the product after forming.

[0058] Therefore, in order to reduce the pores in the material, the conveying line used in the embodiment can vibrate the mold during conveying, that is, a vibrating conveying line is used. In this way, the mold with the material is conveyed forward on the conveying line, and the conveying line drives the mold to vibrate, so as to break the pores mixed in the material, thereby reducing the pore content in the material.

[0059] In some embodiments, as shown in Figure 2 The conveying line includes a conveying belt 61 and a vibrating motor (not shown in the figure), and the vibrating motor is installed on the conveying belt 61 to drive the conveying belt 61 to vibrate. It can be understood that the vibrating motor is not directly installed on the belt surface of the conveying belt 61, but can be installed on the frame of the conveying belt 61. In this way, the vibrating motor works to drive the entire conveying belt 61 to vibrate, and then drives the mold on the conveying belt 61 to vibrate.

[0060] The curing system 400 is mainly used for curing the material in the mold (i.e., the prefabricated component), which is arranged downstream of the material forming system 600. The curing system 400 mainly includes a curing chamber 41 of a steel structure frame attached to a thermal insulation rock wool structure, and a temperature and humidity control instrument is arranged in the curing chamber 41. The temperature and humidity of different temperature measuring points in the chamber are controlled, so that the curing conditions of the curing chamber 41 are maintained at a temperature of 60-120°C and a relative humidity of 95%. The curing time is 6-15h. The molds after stacking can be transferred to the curing chamber 41 by a forklift for curing.

[0061] After curing, the mold is demolded to obtain the required prefabricated component. The demolding here can be manual demolding or mechanical demolding.

[0062] In some embodiments, according to different needs, sometimes artificial aggregate products are expected to be obtained, and the prefabricated component obtained can be further processed to obtain artificial aggregate products.

[0063] Specifically, the production system further includes a crushing system and a screening system.

[0064] The crushing system is arranged downstream of the maintenance system 400, and is used for crushing the precast component, and includes a crusher 700, for example, a ring hammer crusher 700. The obtained precast component is fed into the crusher 700 for crushing by the crusher 700 to obtain granular material.

[0065] The screening system is arranged downstream of the crushing system, and includes a vibrating screen 800, which is used for screening the granular material after crushing of the precast component to obtain artificial aggregate products. That is, the granular material output by the crusher 700 is transported to the vibrating screen 800 for screening by the vibrating screen 800 to obtain the required aggregate products.

[0066] It is worth noting that the vibrating screen 800 in the embodiment can be used for multi-stage screening. For example, in the embodiment, two-stage screening is used, the first stage screening obtains aggregate products of 5mm-10mm, and the second stage screening obtains aggregate products of 0mm-5mm.

[0067] The particles larger than 10mm need to be fed back into the crusher 700 for re-crushing, and therefore, in the embodiment, a second elevator 82 is further arranged downstream of the screening system, and is used for lifting the particles intercepted by the screening system to the crushing system. Here, the intercepted particles refer to the particles exceeding the required particle size, which are intercepted by the screen of the vibrating screen 800. For example, the particles larger than 10mm are intercepted, and can be lifted by the second elevator 82 to the crusher 700 for re-crushing to obtain artificial aggregate with the required particle size.

[0068] The system provided in the embodiment is specifically produced by the following method:

[0069] S1, feeding:

[0070] The detoxified fly ash (detoxified fly ash, i.e., detoxified fly ash) and gypsum with a set weight are weighed by the two-belt metering scale 200, and are fed into the mixer 500 by the first elevator 300;

[0071] The two material barrels 11 respectively output fly ash and mineral powder with a set weight into the mixer 500;

[0072] The industrial water tank 13 outputs industrial tap water with a set weight into the mixer 500. In the above-mentioned materials, the mass fraction of each material can be that the detoxified fly ash accounts for 1%-50%, preferably 10%-30%; the total mass fraction of the mineral powder and the fly ash accounts for 40%-90%, and the mass fraction of the gypsum accounts for 5%-10%. Among them, the water content of the gypsum particle is 10%-20%, and the water content of the detoxified fly ash is less than 5%.

[0073] S2, mixing: the mixer 500 is started, and the fly ash, gypsum, fly ash, mineral powder, and industrial tap water in the mixer 500 are mixed and stirred to obtain a mixture.

[0074] S3, distributing: the mixed material obtained after the stirring is distributed into the molds on the conveying belt 61 by the distributing device 63, so as to realize the pouring.

[0075] S4, stacking: the molds after the pouring are conveyed to the stacker 62 by the conveying belt 61, and the stacker 62 stacks the molds; the conveying belt 61 vibrates the molds during the conveying, so as to reduce the air holes in the material.

[0076] S5, the molds after the stacking are transferred to the curing chamber 41 by the forklift, and cured in the curing chamber 41; the curing chamber 41 is maintained at a temperature of 60-120℃ and a relative humidity of 95%; the curing time is 6-15h.

[0077] S6, after the curing, the molds are demolded to obtain the prefabricated components, which are continuously cured outdoors for 7 days.

[0078] S7, if the prefabricated components are used to obtain artificial aggregate products, the prefabricated components after the demolding are transferred to the crusher 700 by the electric hoist 83, and crushed by the crusher 700.

[0079] S8, the particles after the crushing are sent to the vibrating screen 800 for screening, so as to obtain the aggregate products with the required particle size; the particles with a particle size larger than the required particle size are re-sent to the crusher 700 by the elevator for crushing.

[0080] S9, the aggregate products meeting the requirements output by the vibrating screen 800 are conveyed to the next station by the belt conveyor 81.

[0081] It should be understood that the various forms of the flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, which is not limited herein.

[0082] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0083] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A waste incineration fly ash resource product production system, characterized by, The production system comprises: a stock system for storing raw materials; a stirring system arranged downstream of the stock system for stirring the raw materials, the stirring system comprising a stirrer; a forming system arranged downstream of the stirring system, the forming system comprising a mold for forming a precast component and a conveying line, the raw materials being poured into the mold and then conveyed by the conveying line, wherein the conveying line is capable of vibrating the mold during conveying; a curing system arranged downstream of the forming system for curing the precast component in the mold, the precast component being obtained after the mold is demolded.

2. The waste incineration fly ash resource product production system according to claim 1, characterized in that, The production system further comprises: a crushing system arranged downstream of the curing system for crushing the precast component, the crushing system comprising a crusher; a screening system arranged downstream of the crushing system, the screening system comprising a vibrating screen for screening the particles after the precast component is crushed to obtain artificial aggregate products.

3. The waste incineration fly ash resource product production system according to claim 2, characterized in that, A second elevator is further arranged downstream of the screening system, the second elevator being used to lift the particles trapped by the screening system into the crushing system.

4. The waste incineration fly ash resource product production system according to claim 1, characterized in that, The conveying line comprises a conveying belt and a vibrating motor mounted on the conveying belt to drive the conveying belt to vibrate.

5. The waste incineration fly ash resource product production system according to claim 1, characterized in that, The stock system comprises a plurality of stock units, each stock unit comprising a stock cylinder and a first conveyor for outputting the materials in the stock cylinder, the feeding port of the first conveyor being connected to the discharging port of the stock cylinder.

6. The waste incinerated fly ash resource product production system according to claim 1, characterized in that, The stock system further comprises a first weighing system for weighing the materials output by the first conveyor.

7. The waste incinerated fly ash resource product production system according to claim 1, characterized in that, The production system further comprises a second weighing system for weighing the fly ash.

8. The waste incinerated fly ash resource product production system according to claim 7, characterized in that, The production system further comprises a first elevator for lifting the materials weighed by the second weighing system into the stirrer.

9. The waste incinerated fly ash resource product production system according to claim 1, characterized in that, The forming system further comprises a palletizer arranged at the discharging side of the conveying line for palletizing the molds output by the conveying line.

10. The waste incinerated fly ash resource product production system according to claim 1, characterized in that, The forming system further comprises a distributing device, the distributing device comprising a hopper and a second conveyor, the hopper being used to receive the materials output by the stirrer, and the second conveyor being used to arrange the materials output by the hopper into the mold.

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