CN210632617U - A flying dust stabilization shaping processing apparatus for msw incineration factory - Google Patents
A flying dust stabilization shaping processing apparatus for msw incineration factory Download PDFInfo
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- CN210632617U CN210632617U CN201920764804.7U CN201920764804U CN210632617U CN 210632617 U CN210632617 U CN 210632617U CN 201920764804 U CN201920764804 U CN 201920764804U CN 210632617 U CN210632617 U CN 210632617U
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Abstract
The utility model provides a flying dust stabilization shaping processing apparatus for msw incineration factory, include: the fly ash temporary storage bin is configured to temporarily store fly ash generated by waste incineration; a mixer-blender configured to blend the fly ash with a chelant to substantially sequester the fly ash; a granulator configured to granulate and shape the chelated fly ash to generate a fly ash granulated finished product; the screening machine is configured to screen qualified finished fly ash granules and unqualified finished fly ash granules; a surge bin configured to receive the sequestered fly ash and the off-spec fly ash granulation finish. According to the utility model provides a fly ash stabilization becomes type processing apparatus for waste incineration plant, through with unqualified fly ash granulation finished product back send to the surge bin in with through chelated fly ash granulation shaping once more together, the fly ash is airtight at chelation, granulation shaping, packing, transportation, keeps in and transports to the whole full flow of landfill, has reduced the raise dust pollution.
Description
Technical Field
The utility model relates to a msw incineration power generation field, concretely relates to flying dust stabilization shaping processing apparatus for msw incineration factory.
Background
Fly ash generated by a household garbage incinerator can not meet the requirement of direct landfill, the landfill can be carried out only by stabilizing treatment to ensure that the concentration limit value of pollutants in leachate reaches the requirement of GB16889-2008 'pollution control standard of household garbage landfill', the conventional fly ash stabilizing treatment process generally adopts the steps of feeding fly ash and a chelating agent into a mixing stirrer according to a certain proportion, carrying out chelation treatment in the stirrer, and transporting chelated fly ash to a landfill for landfill after the chelated fly ash is detected to be qualified by a professional detection unit.
But the fly ash chelating treatment and the fly ash after chelating have the problems of dust pollution in the processes of storage, transportation and landfill.
Therefore, there is a need to provide a new fly ash stabilization and forming device for waste incineration plants to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
The utility model provides a flying dust stabilization shaping processing apparatus for msw incineration factory, include:
the fly ash temporary storage bin is configured to temporarily store fly ash generated by waste incineration;
a mixer-blender configured to blend the fly ash with a chelant to substantially sequester the fly ash;
a granulator configured to granulate and shape the chelated fly ash to generate a fly ash granulated finished product;
the screening machine is configured to screen qualified finished fly ash granules and unqualified finished fly ash granules;
a surge bin configured to receive the sequestered fly ash and the off-spec fly ash granulation finish.
Further, the fly ash stabilization forming treatment device further comprises: and the fly ash weighing equipment is configured to weigh the fly ash so as to control the addition amount of the fly ash.
Further, the fly ash stabilization forming treatment device further comprises: the chelating agent preparation weighing device is used for preparing the chelating agent and weighing the chelating agent to control the adding amount of the chelating agent.
Further, the fly ash stabilization forming treatment device further comprises: a screw doser configured to control the amount of the sequestered fly ash added to the pelletiser.
Further, the fly ash stabilization forming treatment device further comprises: a forced feeder configured to feed the fly ash from the screw constant feeder into the granulator.
Further, the fly ash stabilization forming treatment device further comprises: and the return material screw conveyor is configured to return the unqualified fly ash granulation finished product to the buffer bin.
Further, the fly ash stabilization forming treatment device further comprises: and the chain type bucket elevator is configured to convey the qualified finished fly ash granulation product.
Further, the fly ash stabilization forming treatment device further comprises: and the finished product bin is configured to receive and store the qualified finished granulated fly ash product.
Further, the fly ash stabilization forming treatment device further comprises: and the packer is configured to pack the qualified fly ash granulation finished product in the finished product bin into a fly ash ton bag.
According to the utility model provides a flying dust stabilization shaping processing apparatus for msw incineration factory utilizes mixed mixer to stir flying dust and chelating agent to abundant chelation will be sent into the granulator through chelated flying dust and carry out the granulation shaping, in order to generate flying dust granulation finished product, and with unqualified flying dust granulation finished product back to the surge bin in with granulation shaping once more through chelated flying dust together, the flying dust is airtight at chelation, granulation shaping, packing, transportation, temporary storage and transportation to the whole full flow of landfill, has reduced the raise dust pollution.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles and devices of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a schematic view of the fly ash stabilization, molding and processing device for waste incineration plants of the present invention.
Reference numerals
1. Fly ash temporary storage bin 2 and fly ash weighing equipment
3. Process water tank 4 and chelating agent storage bin
5. Chelating agent configuration weighing device 6 and mixing stirrer
7. Buffer bin 8 and spiral quantitative feeder
9. Forced feeder 10 and granulator
11. Sieving machine 12, chain bucket elevator
13. Finished product bin 14 and packaging machine
15. Material returning bucket elevator 16, material returning screw conveyer
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps will be provided in the following description in order to explain a fly ash stabilization and formation treatment apparatus for a waste incineration plant. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
To the fly ash after fly ash chelation processing and chelation store, transport, the landfill in-process easily produces the problem of raise dust pollution, the utility model provides a fly ash stabilization shaping processing apparatus for waste incineration plant, as shown in figure 1, include:
a fly ash temporary storage bin 1 configured to temporarily store fly ash generated by the incineration of garbage;
a mixer-blender 6 configured to blend the fly ash with a chelating agent to sufficiently chelate;
a granulator 10 configured to granulate and shape the chelated fly ash to generate a fly ash granulated finished product;
the screening machine 11 is configured to screen qualified finished fly ash pellets and unqualified finished fly ash pellets;
a surge bin 7 configured to receive the sequestered fly ash and off-spec finished fly ash pellets.
Exemplarily, fly ash generated in the garbage incineration process is collected by dust removing equipment such as a bag-type dust collector and the like, then is conveyed to the fly ash temporary storage bin 1 through a pneumatic conveying device for temporary storage, and then is subjected to subsequent chelating treatment to meet the requirements of GB16889-2008 pollution control Standard of municipal solid waste landfill.
The chelation treatment of the fly ash mainly comprises the step of carrying out stable solidification treatment on the fly ash by adopting a chelating agent. Chelating agents are compounds that have a chelating function and can selectively trap and separate specific metal ions from a solution containing the metal ions. When a metal ion is combined with an electron donor, the resultant is called a complex or coordination compound. If the substance (molecule or ion) bound to the metal contains two or more electron donating groups so that a complex having a cyclic structure is formed, the resultant, whether a neutral molecule or a charged ion, is called a chelate or an endocomplex, this type of ring formation is called chelation, and the electron donor becomes a chelator. In a chelate, the metal ion and each electron donor are classified into "substantially ionic" and "substantially covalent" types due to the difference in polarity between the bond and the bond, which depends mainly on the types of the metal and electron donor atoms. Since the covalent bond strength is stronger than the ionic bond, when the central metal ion is strongly covalent to the ligand bond, the chelate formed is more stable. Elements in the fifth group to the seventh group, mainly O, N, S, are used as the coordinating atoms in the chelating agent, and the chelating agent is a common agent for treating fly ash.
Exemplarily, the utility model provides a fly ash stabilization molding processing apparatus for waste incineration plant still includes process water tank 3 and chelate medicament storage bin 4, is used for storing the water and the chelate medicament that are used for configuring the chelant (solution) respectively.
The utility model provides a fly ash stabilization becomes type processing apparatus for waste incineration plant still includes fly ash weighing device 2 and chelant configuration weighing device 5, and fly ash weighing device 2 configuration is configured to weigh the addition amount with control fly ash to the fly ash, and chelant configuration weighing device 5 configuration is prepared the chelant and is right the chelant weighs the addition amount with control chelant to send into mix mixer 6 with fly ash and chelant according to a certain proportion.
Next, the fly ash and the chelating agent are mixed and stirred in the mixer 6 to be sufficiently chelated, and the heavy metals in the fly ash react with the chelating agent to form a chelated substance, thereby stabilizing the fly ash. The chelated fly ash is powdery and is sent into the surge bin 7 for short-term retention.
The utility model provides a fly ash stabilization becomes type processing apparatus for waste incineration plant still includes screw quantitative feeder 8 and forces feeding machine 9, and screw quantitative feeder 8 configuration is controlled to be added granulator 10 through chelated fly ash volume, forces feeding machine 9 configuration to be with the fly ash that screw quantitative feeder 8 sent out is sent into in the granulator 10.
Illustratively, the pelletizer 10 includes two pair rolls containing die holes to extrude the fly ash into pellets. The granulator 10 further comprises a hydraulic cylinder to provide a suitable pressure for the granulator 10.
Regarding the quality identification of the finished product of the fly ash granulation, the current judgment indexes of the quality of the finished product of the fly ash granulation are mainly the forming degree and the hardness. The forming degree is observed by naked eyes, the walnut-shaped granules are in a complete flat walnut shape, slightly have dark gray, and the edges of the granules are acute angles and have no burrs; the same scoop corresponding to the middle section of the roll shaft should be substantially free of particulate matter. The hardness can be measured by a detection instrument, and can also be used as a reference for kneading sense organs by hands.
Regarding the adjustment of the quality of the finished product of the fly ash granulation, the factors influencing the quality of the finished product particles are the current value of the granulator, the original ash water content, the frequency of the granulator and the pressure of a hydraulic cylinder besides the factors of the granulator. The granulator current value is substantially dependent on the feed rate and the proportion of return material in the feed. In one embodiment, the adjustment setting for the pelletizer current level is desirably stabilized between 120A and 140A, and preferably between 100A and 160A during operation. The original ash moisture content is the moisture newly added in the chelation process, and the moisture content is not actual, and the particle hardness, the particle forming degree and the blanking smoothness are influenced by the moisture content. In one embodiment, the raw ash moisture content is set at 7%, and may be modified moderately within 6-8% depending on the climate conditions, but it is not recommended to increase to more than 10%. The higher the granulator frequency is, the higher the machine yield is, but the granulation effect is slightly reduced; meanwhile, due to the existence of a material returning system, poor granulation effect can cause the increase of material returning. In one embodiment, there is a significant increase in throughput as the pelletizer frequency is increased to 40Hz and no significant increase in throughput as it continues to increase to 50 Hz. The hydraulic cylinder provides suitable pressure for the sheet rolling machine, and is set to be 8MPa-10 MPa.
Fly ash is granulated and formed into fly ash granulated finished products, and the fly ash is granulated from chelated powdery fly ash, so that dust pollution in the subsequent packaging, storage, transportation and landfill processes is reduced.
Next, the finished granulated fly ash product generated by the granulator 10 enters a sieving machine 11 for sieving to obtain qualified granulated fly ash products and unqualified granulated fly ash products.
The fly ash stabilization and formation treatment device for the waste incineration plant provided by the utility model also comprises a chain type bucket elevator 12 which is configured to convey the qualified fly ash granulation finished product; a finished product bin 13 configured to receive and store the qualified fly ash granulation finished products; and a baling machine 14 configured to bale the qualified fly ash prilled finished products in the finished product silo into fly ash ton bags.
In one embodiment, the qualified granulated fly ash product is transported by the chain hopper 12 to the product silo 13 and then from the product silo 13 to the baling machine 14 for baling into fly ash ton bags. As an example, the fly ash ton bag is a woven bag of flat polypropylene threads having dimensions of 1000mm by 1000mm for containing the finished fly ash pellets, and has a weight of about 1000 kg.
The fly ash stabilization and formation treatment device for the waste incineration plant provided by the utility model also comprises a material returning bucket elevator 15 which is configured to convey the unqualified fly ash granulation finished product; a return screw conveyor 16 configured to return the rejected finished granulated fly ash product to the surge bin 7.
In one embodiment, the unqualified finished granulated fly ash is returned to the surge bin 7 by a return hopper type elevator 15 and a return screw conveyor 16, and then enters the granulator 10 again together with the chelated fly ash for granulation and forming, so as to generate the finished granulated fly ash.
According to the utility model provides a flying dust stabilization shaping processing apparatus for msw incineration factory utilizes mixed mixer to stir flying dust and chelating agent to abundant chelation will be sent into the granulator through chelated flying dust and carry out the granulation shaping, in order to generate flying dust granulation finished product, and with unqualified flying dust granulation finished product back to the surge bin in with granulation shaping once more through chelated flying dust together, the flying dust is airtight at chelation, granulation shaping, packing, transportation, temporary storage and transportation to the whole full flow of landfill, has reduced the raise dust pollution.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A flying ash stabilization shaping processing apparatus for waste incineration plant which characterized in that includes:
the fly ash temporary storage bin is configured to temporarily store fly ash generated by waste incineration;
a mixer-blender configured to blend the fly ash with a chelant to substantially sequester the fly ash;
a granulator configured to granulate and shape the chelated fly ash to generate a fly ash granulated finished product;
the screening machine is configured to screen qualified finished fly ash granules and unqualified finished fly ash granules;
a surge bin configured to receive the sequestered fly ash and the off-spec fly ash granulation finish.
2. The fly ash stabilization molding treatment apparatus according to claim 1, further comprising: and the fly ash weighing equipment is configured to weigh the fly ash so as to control the addition amount of the fly ash.
3. The fly ash stabilization molding treatment apparatus according to claim 1, further comprising: the chelating agent preparation weighing device is used for preparing the chelating agent and weighing the chelating agent to control the adding amount of the chelating agent.
4. The fly ash stabilization molding treatment apparatus according to claim 1, further comprising: a screw doser configured to control the amount of the sequestered fly ash added to the pelletiser.
5. The fly ash stabilization molding treatment apparatus according to claim 4, further comprising: a forced feeder configured to feed the fly ash from the screw constant feeder into the granulator.
6. The fly ash stabilization molding treatment apparatus according to claim 1, further comprising: and the return material screw conveyor is configured to return the unqualified fly ash granulation finished product to the buffer bin.
7. The fly ash stabilization molding treatment apparatus according to claim 1, further comprising: and the chain type bucket elevator is configured to convey the qualified finished fly ash granulation product.
8. The fly ash stabilization molding treatment apparatus according to claim 7, further comprising: and the finished product bin is configured to receive and store the qualified finished granulated fly ash product.
9. The fly ash stabilization-forming treatment device of claim 8, further comprising: and the packer is configured to pack the qualified fly ash granulation finished product in the finished product bin into a fly ash ton bag.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764804.7U CN210632617U (en) | 2019-05-24 | 2019-05-24 | A flying dust stabilization shaping processing apparatus for msw incineration factory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920764804.7U CN210632617U (en) | 2019-05-24 | 2019-05-24 | A flying dust stabilization shaping processing apparatus for msw incineration factory |
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| CN210632617U true CN210632617U (en) | 2020-05-29 |
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| CN201920764804.7U Active CN210632617U (en) | 2019-05-24 | 2019-05-24 | A flying dust stabilization shaping processing apparatus for msw incineration factory |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482130A (en) * | 2020-06-11 | 2020-08-04 | 常州英科环境科技有限公司 | Fly ash stabilization granulation system and working method |
| WO2023173780A1 (en) * | 2022-03-16 | 2023-09-21 | 深圳能源环保股份有限公司 | Humidity-based waste incineration fly ash treatment control method and apparatus, and storage medium |
-
2019
- 2019-05-24 CN CN201920764804.7U patent/CN210632617U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482130A (en) * | 2020-06-11 | 2020-08-04 | 常州英科环境科技有限公司 | Fly ash stabilization granulation system and working method |
| WO2023173780A1 (en) * | 2022-03-16 | 2023-09-21 | 深圳能源环保股份有限公司 | Humidity-based waste incineration fly ash treatment control method and apparatus, and storage medium |
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