CN106363004B - A kind of pretreatment unit and processing method of waste incineration and generating electricity flying dust - Google Patents
A kind of pretreatment unit and processing method of waste incineration and generating electricity flying dust Download PDFInfo
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- CN106363004B CN106363004B CN201510430498.XA CN201510430498A CN106363004B CN 106363004 B CN106363004 B CN 106363004B CN 201510430498 A CN201510430498 A CN 201510430498A CN 106363004 B CN106363004 B CN 106363004B
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Abstract
The invention discloses the pretreatment units and processing method of a kind of waste incineration and generating electricity flying dust, and flying dust storehouse, pre-processing device, flying dust metering device, cement bin, cement-weighting device, kneading machine, stabilizer stoste slot, stabilizer stock solution flow meter, distributed water flow meter, stabilizer stirred tank and conveying metering pump is rationally arranged.Using the processing method of the device, by flying dust after being stirred of pre-processing device, detection and analysis are sampled in pre-processing device sample tap；According to being the detection and analysis result obtained in pre-processing device sample tap sample detection and data setting cement and stabilizer ratio；By flying dust, the discharging after kneading machine is sufficiently mixed of a certain proportion of cement and stabilizer；Treated, and flying dust is discharged into waiting in the transport vehicle of its underpart, is transported to specified landfill yard and is filled.Stabilizer, cement, water proportional quantity can be arranged accurately for the processing method, and the effect of solidification and stabilization processing is good.
Description
Technical field
The present invention relates to energy conservation and environmental protection, the pretreatment unit of specially a kind of waste incineration and generating electricity flying dust and processing side
Method.
Background technique
Flying dust refers to the substance collected in recuperation of heat using system, flue gas purification system after waste incineration.The generation of flying dust
Amount is related with rubbish type, burning condition, the burning type of furnace and flue gas treating process, generally accounts for about the 3%-5% of waste incineration amount
Left and right.In flying dust containing a large amount of lead, zinc, cadmium, mercury etc. heavy metals and its esters and a variety of persistence organic pollutants,
Middle dioxin is the main organic pollutant in flying dust.Dioxin is polychlorinated dibenzo- p- dioxins (PCDDs) and more chlorine
The general designation of dibenzofurans (PCDFs), the concentration distribution of dioxin isomers has similar feature, high chloro in flying dust
The content of dioxin is apparently higher than low chloro dioxin.Generally believe that waste incineration is the main of dioxin in environment at present
One of source.Pollutant in above-mentioned flying dust can migrate after being directly entered environment in the environment such as without processing, not only can be to ring
Border produces serious influence, it is also possible to enter human body by food chain, threaten human health." the consumer waste incineration dirt in China
Dye control standard " flying ash is clearly classified as a kind of hazardous waste, it is necessary to carry out harmless treatment disposition.China is annual at present
Municipal refuse output is at 1.8 hundred million tons or so, and 7% or so is burning disposal, and the yield of flying dust is based on 3%, annual flying dust
Yield is about 37.8 ten thousand tons, it is therefore desirable to which cheap, efficient technology carries out processing disposition to flying dust, reduces its environmental risk.
Solidification and stabilization is the main method of pollutant in current processing flying dust.It is to burn curing and stabilizing agent and rubbish
After burning flying dust mixing, mineral or insoluble substance are generated using the reaction of curing and stabilizing agent and metal, to reduce weight
The dissolution of metal and organic pollutant.Although flyash curing stabilization processes are a kind of simple possible, flying dust without secondary pollution
Processing mode, but need, harm more for pollutant type in flying dust greatly, the feature of complicated component, ingredient dynamic change, open
It sends out novel, efficient solidification stabilization process and equipment, is current to influence the development of flyash curing stabilizing surface treatment and promote
The key of waste incineration development.
The present invention provide it is a kind of for the pretreated Processes and apparatus of waste incineration and generating electricity flying dust, primarily directed to solidifying
During stabilization processes, flying dust has complicated component and the moment is in the feature in dynamic change, causes flyash ingredient not solid
It is fixed, pollutant type is not fixed, pollutant load is not fixed, pollutant is unevenly distributed, so during processing without
Method be accurately arranged curing and stabilizing agent, cement, water additive amount, the final effect for influencing solidification and stabilization processing.
At present in solidification and stabilization treatment process, flying dust, stabilization agent, cement, water proportion the main basis of setting
Experience or the setting of history detection data, the setting of this proportion is inaccurate, and the monitoring data of mainly proportion installation warrants are
History detection data or the data sometime put cannot really reflect winged ash composition to be processed, the type of pollutant, dirt
Contaminate the content and distribution of object.
Summary of the invention
It is above-mentioned to solve it is an object of the invention to the pretreatment unit and processing method of a kind of waste incineration and generating electricity flying dust
Technical problem.
To achieve the above object the invention adopts the following technical scheme: a kind of pretreatment of waste incineration and generating electricity flying dust fills
It sets, including flying dust storehouse, pre-processing device, flying dust metering device, cement bin, cement-weighting device, kneading machine, stabilizer stoste
Slot, stabilizer stock solution flow meter, distributed water flow meter, stabilizer stirred tank and conveying metering pump, the flying dust storehouse passes through spiral transferring
Machine is sent to be connected with pre-processing device, pre-processing device is connected with kneading machine, and pre-processing device is equipped with sample tap, in pre-processing device
Flying dust metering device is equipped between kneading machine, cement bin is connected with kneading machine, and cement is equipped between cement bin and kneading machine
Metering device, the stabilizer stirred tank is connected with stabilizer stoste slot and water source respectively, in stabilizer stirred tank and stabilizer
It is equipped with stabilizer stock solution flow meter between stoste slot, distributed water flow meter, stabilizer are equipped between stabilizer stirred tank and water source
Stirred tank is connected with kneading machine, and conveying metering pump is equipped between stabilizer stirred tank and kneading machine.
The quantity of pre-processing device is set according to the technological requirements, and according to the size of spatial position, pre-processing device is set as
It is vertical or horizontal, the size of pre-processing device volume is set according to daily treatment scale.
Pre-processing device can select powerful blender or other mixing plants.
Process method step using above-mentioned pretreatment unit is as follows:
1) flying dust is sent by screw conveyor to pre-processing device, after being stirred of pre-processing device, pre-
Processing equipment sample tap is sampled detection and analysis, obtains type, content and the distributed data of pollutant in flying dust；
2) according to be the detection and analysis result obtained in pre-processing device sample tap sample detection and data setting cement and
Stabilizer ratio；
3) by flying dust, the cement of certain mass ratio and stabilizer after kneading machine is sufficiently mixed, stop kneading machine work
And start discharging；
4) treated, and flying dust is discharged into waiting in the transport vehicle of its underpart, is transported to specified landfill yard and is filled.
The quality of the stabilizer addition is the 1%~5% of flying dust quality, and cement adds 8% that quality is flying dust quality
~12%.
Within in flying dust exceeded 10 times of pollutant load, it is 2% that stabilizer, which adds mass ratio,；Pollutant load is exceeded
Within 15 times, it is 3% that stabilizer, which adds mass ratio,；Within exceeded 15 times of pollutant load, stabilizer addition mass ratio is
5%.
The stabilizer is chelating agent.
The beneficial effects of the present invention are: the pretreatment unit of the waste incineration and generating electricity flying dust, structure is simple, and design is reasonable,
Low cost；Using the pretreatment unit in solidification and stabilization treatment process, by pre-processing device sample tap sample detection
Obtained detection and analysis result and data can really reflect winged ash composition to be processed, the type of pollutant, the content of pollutant
And distribution, flying dust, stabilizer, cement, the setting of water proportional quantity are accurate, and the effect of solidification and stabilization processing is good.
Detailed description of the invention
Fig. 1 is this bright structural schematic diagram；
In figure: 1. flying dust storehouses, 2. pre-processing devices, 3. flying dust metering devices, 4. cement bins, 5. cement-weighting devices, 6.
Kneading machine, 7. stabilizer stoste slots, 8. stabilizer stock solution flow meters, 9. distributed water flow meters, 10. stabilizer stirred tanks, 11. conveyings
Metering pump.
Specific embodiment
The present invention is further elaborated in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of pretreatment unit of waste incineration and generating electricity flying dust, including flying dust storehouse 1, pre-processing device 2, fly
Grey metering device 3, cement-weighting device 5, kneading machine 6, stabilizer stoste slot 7, stabilizer stock solution flow meter 8, is matched at cement bin 4
Water ga(u)ge 9, stabilizer stirred tank 10 and conveying metering pump 11, the flying dust storehouse 1 pass through screw conveyor (not shown)
It is connected with pre-processing device 2, pre-processing device 2 is connected with kneading machine 6, and pre-processing device 2 is equipped with sample tap (not shown),
Between pre-processing device 2 and kneading machine 6 be equipped with flying dust metering device 3, cement bin 4 is connected with kneading machine 6, and cement bin 4 and
Cement-weighting device 5 is equipped between kneading machine 6, the stabilizer stirred tank 10 is connected with stabilizer stoste slot 7 and water source respectively,
Stabilizer stock solution flow meter 8 is equipped between stabilizer stirred tank 10 and stabilizer stoste slot 7, in stabilizer stirred tank 10 and water
Distributed water flow meter 9 is equipped between source, stabilizer stirred tank 10 is connected with kneading machine 6, between stabilizer stirred tank 10 and kneading machine 6
Equipped with conveying metering pump 11.
The quantity of pre-processing device 2 is set according to the technological requirements, and according to the size of spatial position, pre-processing device 2 is arranged
To be vertical or horizontal, the size of 2 volume of pre-processing device is set according to daily treatment scale；Pre-processing device 2 can be selected greatly
The blender of power or other mixing plants.
Process method step using above-mentioned pretreatment unit is as follows:
1) flying dust is sent by screw conveyor to pre-processing device 2, after being stirred of pre-processing device 2,
2 sample tap of pre-processing device is sampled type, content and the distributed data for testing and analyzing and obtaining pollutant in flying dust；
2) according to be the detection and analysis result obtained in 2 sample tap sample detection of pre-processing device and data setting cement and
Stabilizer ratio；
3) by flying dust, the cement of certain mass ratio and stabilizer after kneading machine 6 is sufficiently mixed, stop 6 work of kneading machine
Make and starts discharging；
4) treated, and flying dust is discharged into waiting in the transport vehicle of its underpart, is transported to specified landfill yard and is filled.
The quality of the stabilizer addition is the 1%~5% of flying dust quality, and cement adds 8% that quality is flying dust quality
~12%.
Within in flying dust exceeded 10 times of pollutant load, it is 2% that stabilizer, which adds mass ratio,；Pollutant load is exceeded
Within 15 times, it is 3% that stabilizer, which adds mass ratio,；Within exceeded 15 times of pollutant load, stabilizer addition mass ratio is
5%.
The stabilizer is chelating agent.
A kind of working principle of the pretreatment unit of waste incineration and generating electricity flying dust of the present invention, starts the device, passes through spiral
Flying dust in flying dust storehouse is transported to pre-processing device by conveyer, is sent the flying dust in pre-processing device to flying dust by discharge valve
Quantitative flying dust is discharged into kneading machine by metering device, flying dust metering device in batches by the capacity of blender；Water in cement bin
Mud is quantitatively sent by cement-weighting device to kneading machine；After kneading machine is fed, kneading machine is no longer fed, and is started to work；Together
When, the stabilizer being stirred is added in kneading machine by conveying metering pump according to the ratio that sets with flying dust amount, by flying dust,
Cement, stabilizer are sufficiently stirred, mix.
Obviously, embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Claims (4)
1. a kind of pretreatment unit of waste incineration and generating electricity flying dust, including flying dust storehouse, pre-processing device, flying dust metering device, water
Hopper dredger, cement-weighting device, kneading machine, stabilizer stoste slot, stabilizer stock solution flow meter, distributed water flow meter, stabilizer stirring
Slot and conveying metering pump, which is characterized in that the flying dust storehouse is connected by screw conveyor with pre-processing device, pre-processing device
It is connected with kneading machine, pre-processing device is equipped with sample tap, and flying dust metering device, water are equipped between pre-processing device and kneading machine
Hopper dredger is connected with kneading machine, and between cement bin and kneading machine be equipped with cement-weighting device, the stabilizer stirred tank respectively with
Stabilizer stoste slot and water source are connected, and stabilizer stock solution flow meter is equipped between stabilizer stirred tank and stabilizer stoste slot,
Distributed water flow meter is equipped between stabilizer stirred tank and water source, stabilizer stirred tank is connected with kneading machine, stabilizer stirred tank
It is equipped with conveying metering pump between kneading machine, the quantity of pre-processing device is set according to the technological requirements, according to the big of spatial position
Small, pre-processing device is set as vertical or horizontal, and the size of pre-processing device volume is arranged according to daily treatment scale, described pre-
Processing equipment selects powerful blender.
2. a kind of method for handling waste incineration and generating electricity flying dust, which is characterized in that utilize pretreatment unit described in claim 1
Process method step it is as follows:
1), flying dust is sent by screw conveyor to pre-processing device, after being stirred of pre-processing device, is being pre-processed
Equipment sample tap is sampled detection and analysis, obtains type, content and the distributed data of pollutant in flying dust；
2), according to being the detection and analysis result obtained in pre-processing device sample tap sample detection and data setting cement and stabilization
Agent ratio；
3), by flying dust, the cement of certain mass ratio and stabilizer after kneading machine is sufficiently mixed, stop kneading machine and work and open
Beginning discharging；
4), treated, and flying dust is discharged into waiting in the transport vehicle of its underpart, is transported to specified landfill yard and is filled.
3. a kind of method for handling waste incineration and generating electricity flying dust according to claim 2, which is characterized in that the stabilizer
The quality of addition is the 1%~5% of flying dust quality, cement add quality be flying dust, cement and stabilizer gross mass 8%~
12%.
4. a kind of method for handling waste incineration and generating electricity flying dust according to claim 2, which is characterized in that the stabilization
Agent is chelating agent.
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| CN201510430498.XA CN106363004B (en) | 2015-07-22 | 2015-07-22 | A kind of pretreatment unit and processing method of waste incineration and generating electricity flying dust |
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| CN106363004B true CN106363004B (en) | 2019-04-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954742B (en) * | 2017-12-14 | 2021-11-02 | 上海环境卫生工程设计院有限公司 | Fly ash management method and system |
| CN108435749A (en) * | 2018-03-30 | 2018-08-24 | 山东中再生环境服务有限公司 | A kind of innoxious landfill system of danger wastes |
| CN108672463B (en) * | 2018-05-19 | 2019-11-22 | 镇江新区固废处置股份有限公司 | A kind of trash receptacle, solidification and burying method |
| CN109277402B (en) * | 2018-11-30 | 2023-11-07 | 永清环保股份有限公司 | Stabilization and solidification treatment system and treatment method for waste incineration fly ash |
| CN109745653A (en) * | 2019-01-04 | 2019-05-14 | 南京鑫豪高分子材料有限公司 | A kind of secondary sequestering system |
| CN113070316A (en) * | 2020-09-29 | 2021-07-06 | 徐州中科振丰环境科技研究院有限公司 | Key technology for pretreatment of fly ash generated by burning household garbage |
| CN117282749B (en) * | 2023-09-26 | 2024-07-23 | 青岛理工大学 | Method for solidifying fly ash by cement |
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Denomination of invention: A pretreatment device and treatment method of fly ash from waste incineration power generation Effective date of registration: 20210823 Granted publication date: 20190430 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: LOVE-SOIL ENGINEERING ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Registration number: Y2021110000037 |
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