CN109289669B - A kind of system and its processing method of environmental protection convenient treated coal ash and dedusting ash - Google Patents
A kind of system and its processing method of environmental protection convenient treated coal ash and dedusting ash Download PDFInfo
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- CN109289669B CN109289669B CN201811215248.4A CN201811215248A CN109289669B CN 109289669 B CN109289669 B CN 109289669B CN 201811215248 A CN201811215248 A CN 201811215248A CN 109289669 B CN109289669 B CN 109289669B
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- slurrying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/811—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the system and its processing method of a kind of environmental protection convenient treated coal ash and dedusting ash, which includes bag filter, ash-storing bin, Double shaft stirring humidifier, slurrying pond and stockyard, can be used for handling flyash and dedusting ash in flue gas.The flyash and dedusting ash of slurrying accumulation ultimately form the truncated rectangular pyramids structure slag muck of rule, can be used for making machine-made baking-free brick after dusting, realize the cycling and reutilization of trade waste.At the same time, what which eliminated loading machine and dump truck has bad luck process, reduces the generation of fugitive dust.
Description
Technical field
The present invention relates to chemical fields, in particular to the system and its processing side of a kind of treated coal ash and dedusting ash
Method.
Background technique
Flyash is commonly called as flying dust, from the trade waste of power plant emission, typically exhibits grey or grey black, mainly
Ingredient is SO2And Al2O3, additionally include Fe2O3, CaO, MgO, TiO2Etc. other compositions.Coal dust is in suspended state in burner hearth
It burns, incombustible is mingled in high-temperature flue gas, in the molten state because surface tension effects form a large amount of tiny spherical shapes
Particle, under boiler induced-draft fan effect, the flue gas with a large amount of ash exists in the cooled cooling in furnace tail portion, some tiny soot particles
By being in glassy state under the cooling effect of quick refrigeration, the flue gas after cooling passes through bag filter for the ash particle in flue gas
Interception is got off, and is collected, as flyash.
Dedusting ash includes flue gas ash removal ash and environmental dust removal ash, the former is the product occurred in high temperature production technical process,
Dedusting and sintering machine head end high-temperature flue gas including blast furnace and converter gas system etc., it is larger using difficulty；The latter is at normal temperature
Aggregation, including dedusting ash caused by the transhipment between raw material handling, post etc..
It is consumed in smelting iron and steel, coal-fired thermal power and other chemical industries, the daily production process of the equipment such as blast furnace, boiler big
Coal is measured, and then generates a large amount of flyash and dedusting ash, with China's chemical industry, smelting, the development of power industry, the row of the two
High-volume it will also increase year by year.2001 to 2013, China's thermal power generation unit was in explosive growth, and flyash yield increases
3.1 times, national flyash yield has reached 6.2 hundred million tons within 2015, causes to the development of the national economy and ecological environment in China
Huge pressure.
The method of conventional process flyash and dedusting ash is to humidify outdoor accumulation, but this method is had bad luck in dump truck entrucking
Fugitive dust will be generated in the process, pollute atmospheric environment.For problems, in recent years, many researchers begin look for more environmentally friendly
System and method to treated coal ash and dedusting ash.
Application No. is 201711057362.4 patents to disclose a kind of method of treated coal ash, and this method is successively to powder
Coal ash carries out carbon removal treatment, mixed processing, ball-milling treatment, alkali-activated carbonatite processing, forming processes and maintenance processing, and final acquirement is high
Quality froth brick has significant economic benefit and environmental benefit.But this method is complex, and can occur as time goes by
Excitation poisoning, and then hydration reaction occur and a series of contingency questions such as slow down gradually or even terminate.
Application No. is 201510474563.9 patents to disclose a kind of dust collecting process of dry coke quenching dedusting ash, which exists
It is equipped with upper hose and Hydraulic transportation pipeline between dry coke quenching deduster and coke quenching pool, water pump, In are set at the clear water reserviors of coke quenching pool
The clear water of coke quenching pool is sent to the injection below deduster by setting jet pump or stirring pool, water pump by upper hose below deduster
Pump or stirring pool, the dedusting ash in deduster are sent back to after mixing in jet pump or stirring pool with water by Hydraulic transportation pipeline
In coke quenching pool, dedusting ash is with catching after precipitating, and the simple process, equipment are few and operating cost is low.But the technique is being removed
Directly fail consideration chemical industry volume of waste minimizing and money with being transported after being caught away with shipment vehicle after dust precipitating
The cycling and reutilization in source.
In view of the above-mentioned problems, needing to find system and the processing side of a kind of environmental protection convenient and fast treated coal ash and dedusting ash
Method realizes the cycling and reutilization of resource while conveniently and efficiently treated coal ash and dedusting ash.
Summary of the invention
The present invention provides a kind of small investments, system and its place of treated coal ash and dedusting ash convenient and that be conducive to environmental protection
Reason method.
The technical scheme is that
The system includes bag filter, ash-storing bin, Double shaft stirring humidifier, slurrying pond and stockyard, and the system is available
Flyash and dedusting ash in processing flue gas.
In the present invention, the side of the bag filter is configured with pulse valve, and storehouse pump is connected with below bag filter；
The storehouse pump lower section is connect by pipeline with two ash-storing bins, and one-in-and-two-out formula reversal valve is equipped on the pipeline, can
It realizes that two ash-storing bin switchings use, avoids causing because of equipment and other slurrying equipment faults completely accident generation out of service；
It is equipped with exhaust outlet above the ash-storing bin, deduster, two ash-storing bin bottoms are mounted on the exhaust outlet
It connect with two Double shaft stirring humidifiers, is respectively set between two ash-storing bins and two Double shaft stirring humidifiers respectively
There is unloading valve；The Double shaft stirring humidifier utilizes two symmetrical helical axis synchronous rotaries, in powders such as conveying dry ashes
It is added water and stirred while material, uniformly humidifies dry ash granular material, mixing will not generate segregation, and reaching, which makes to humidify material, does not emit dry ash
The purpose of water droplet will not be oozed out again, consequently facilitating humidifying grey entrucking transport or being transferred to other conveying equipments；Two twin shafts
Stirring humidifier passes through pipeline respectively and connect with the slurrying pond, and the slurrying pond is reinforced concrete structure, bottom of pond and
Pool wall inner lining glass fiber reinforced plastic anti-corrosion leak-proof layer avoids waste water in pond from penetrating into pollution surrounding enviroment in soil, and slurrying bottom of pond is in tilted layout,
Bottom of pond side lowest part is cheated equipped with submerged pump, equipped with slush pump under liquid, is equipped with double-layer stirring device in pond, is passed through the rotation of blade
Mud is driven to suspend.The slurrying pond is connect by pipeline with the stockyard, and the stockyard bottom is laid with antiseepage film,
Stockyard surrounding is laid with discharge pipe, is equipped with several mortar pools inside stockyard, and multiple mortar pools use in turn, wait mud in mortar pools
It starches after dehydration solidifies by manually having built cofferdam again on its original base, so successively accumulation, ultimately forms down big up small
The truncated rectangular pyramids structure slag muck of rule；The discharge pipe is laid around stockyard annular, is conducive to keep away mortar pool plasma discharge operation simultaneously
The generation of plasma discharge pipe end accumulation of mud stopping state is exempted from；The stockyard is provided centrally with center pond, if center pond is placed in
Between dry mortar pool, winter water evaporation quantity is small, and mud desiccation speed is slower in mortar pool, when mud is not in mortar pool
When dehydration solidifies, mud can be discharged into the pond of center and be buffered, guarantee stockyard continuous operation.
Further, the system of a kind of environmental protection convenient treated coal ash and dedusting ash of the invention, processing method include
Following steps:
(1) flyash and dedusting ash are sent by storehouse pump and pipeline to ash-storing bin after bag filter is collected, and opening is unloaded
Grey valve, flyash and dedusting ash enter in Double shaft stirring humidifier in ash-storing bin；
(2) flyash in step (1) in Double shaft stirring humidifier and dedusting ash are tentatively added by Double shaft stirring humidifier
It is wet, dust raising phenomenon is avoided the occurrence of, the dust after being humidified；
(3) dust after humidifying obtained in step (2) enters in slurrying pond through piping, sufficiently mixed with the water in pond
It closes, the slush pump after the double-layer stirring device stirring in slurrying pond through slurrying bottom of pond portion, which pressurizes, to be sent through pipeline to the row in stockyard
It starches in pipe, mortar is discharged into specified mortar pool through discharge pipe, and multiple mortar pools use in turn；
(4) mortar of the mortar pool curing molding after 2-3 days is discharged into step (3), by manually in the mortar pool solidified
Cofferdam has been built again on the inside of cofferdam, while having laid antiseepage film, as new mortar pool, is successively built height, is eventually formed slag muck.
Further, antiseepage film thickness described in step (4) is not less than 0.5mm；
Further, slag muck described in step (4) is the truncated rectangular pyramids shape of rule, and truncated rectangular pyramids structural stability is better than vertical
Face body can prevent the dam break of stockyard cofferdam；
Further, slag muck described in step (4) can admix part of cement, gravel, for making machine-made baking-free brick.
The beneficial effect that the present invention obtains is:
(1) present invention employs by the mode transport process of flyash and dedusting ash slurrying, eliminate previous loading machine, from
Unload the process of having bad luck of truck, generation that is convenient and efficient and reducing fugitive dust.
(2) flyash of slurrying accumulation and dedusting ash ultimately form the truncated rectangular pyramids structure slag muck of rule, determine on the outside of slag muck
Phase applies one layer of adhesive, prevents from stacking for a long time and causes appearance weathering dust raising phenomenon.
(3) accumulation flyash admix part of cement after dusting, gravel makes machine-made baking-free brick, instead of traditional clay brick,
Trade waste cycling and reutilization can be achieved.
Figure of description
Fig. 1: the system construction drawing that the present invention is implemented
Fig. 2: stockyard schematic diagram
In Fig. 1,1- bag filter, 2- pulse valve, 3- reversal valve, 4- ash-storing bin, 5- unloading valve, 6- Double shaft stirring humidification
Device, 7- slurrying pond, 8- slush pump, the stockyard 9-, 10- discharge pipe, the storehouse 11- pump, 12- double-layer stirring device, 13- mortar pool, in 14-
Heart pond.
Specific embodiment
As shown in Figure 1, which includes bag filter 1, ash-storing bin 4, Double shaft stirring humidifier 6, slurrying pond 7 and heap
Field 9, which can be used for handling flyash and dedusting ash in flue gas.
In the present invention, the side of the bag filter is configured with pulse valve 2, is connected with storehouse below bag filter 1
Pump 11；11 lower section of storehouse pump is connect by pipeline with two ash-storing bins 4；One-in-and-two-out formula is installed to change on the pipeline
To valve 3, it is equipped with exhaust outlet above the ash-storing bin 4, is mounted on deduster on the exhaust outlet；Two storages
4 bottom of ash cellar is connect with two Double shaft stirring humidifiers 6 respectively, two ash-storing bins 4 and two Double shaft stirring humidifiers 6
Between be respectively arranged with unloading valve 5；Two Double shaft stirring humidifiers 6 are connected by pipeline and the slurrying pond 7 respectively
It connects, 7 bottom of slurrying pond is equipped with slush pump 8, and slurrying pond 7 is internally provided with double-layer stirring device 12；The slurrying
Pond 7 is connect by pipeline with the stockyard 9.
As shown in Fig. 2, the 9 bottom applied thickness of stockyard is the antiseepage film of 0.05mm, 12 ashes are equipped with inside stockyard 9
Stock tank 13 and 1 center pond 14, (1)-(12) number mortar pool 13 use in turn, wait in mortar pools 13 after mud dehydration solidification by artificial
Cofferdam has been built again on its original base, so successively accumulation, ultimately form the truncated rectangular pyramids structure slag of down big up small rule
Heap；9 surrounding of stockyard is laid with discharge pipe 10；The stockyard 9 is provided centrally with center pond 14, and center pond 14 is placed in 12
Between a mortar pool 13.
A kind of system of environmental protection convenient treated coal ash and dedusting ash, processing method the following steps are included:
(1) flyash and dedusting ash are sent by storehouse pump 11 and pipeline to ash-storing bin 4 after the collection of bag filter 1, are beaten
Unloading valve 5 is opened, flyash and dedusting ash enter in Double shaft stirring humidifier 6 in ash-storing bin 4；
(2) flyash in step (1) in Double shaft stirring humidifier 6 and dedusting ash are preliminary by Double shaft stirring humidifier 6
Humidification, avoids the occurrence of dust raising phenomenon, the dust after being humidified；
(3) dust after humidifying obtained in step (2) enters in slurrying pond 7 through piping, sufficiently mixed with the water in pond
It closes, the slush pump 8 after the double-layer stirring device 12 in slurrying pond 7 is sufficiently stirred through 7 bottom of slurrying pond pressurizes to be sent through pipeline
Into the discharge pipe 10 in stockyard, mortar is discharged into specified mortar pool 13 through discharge pipe 10, and multiple mortar pools 13 use in turn；
(4) mortar of mortar pool 13 curing molding after 2-3 days is discharged into step (3), by manually in the mortar solidified
Cofferdam is built on the inside of 13 cofferdam of pond again, while applied thickness is the antiseepage film of 0.5mm,
New mortar pool 13 is formed, the truncated rectangular pyramids structure slag muck of rule is eventually formed.
Finally, the flyash of accumulation admixes part of cement, gravel production machine-made baking-free brick after dusting, and tradition can be replaced glutinous
Cob brick.
Finally, it should be noted that the above content is merely illustrative of the technical solution of the present invention, rather than is protected to the present invention
The limitation of range, the simple modification or equivalent replacement that those skilled in the art carry out technical solution of the present invention,
All without departing from the spirit and scope of technical solution of the present invention.
Claims (1)
1. a kind of method of environmental protection convenient treated coal ash and dedusting ash, this method by a kind of convenient treated coal ash of environmental protection with
The system of dedusting ash is realized, it is characterised in that: the system includes bag filter, ash-storing bin, Double shaft stirring humidifier, slurrying
Pond and stockyard, the system can be used for handling flyash and dedusting ash in flue gas；The side of the bag filter configures
There is pulse valve, storehouse pump is connected with below bag filter；The storehouse pump lower section is connect by pipeline with two ash-storing bins；It is described
Pipeline on one-in-and-two-out formula reversal valve is installed, be equipped with exhaust outlet above the ash-storing bin, pacify on the exhaust outlet
Equipped with deduster；Two ash-storing bin bottoms are connect with two Double shaft stirring humidifiers respectively, two ash-storing bins
Unloading valve is respectively arranged between two Double shaft stirring humidifiers；Two Double shaft stirring humidifiers pass through pipeline respectively
It is connect with the slurrying pond, the slurrying bottom of pond portion is equipped with slush pump, and the slurrying pond is internally provided with bilayer and stirs
Mix device；
The slurrying pond is connect by pipeline with the stockyard, and the stockyard bottom is laid with antiseepage film, stockyard surrounding
It is laid with discharge pipe, is equipped with several mortar pools inside the stockyard, multiple mortar pools use in turn；
This method specifically includes the following steps:
(1) flyash and dedusting ash are sent by storehouse pump and pipeline to ash-storing bin after bag filter is collected, and open unloading valve,
Flyash and dedusting ash in ash-storing bin enter in Double shaft stirring humidifier；
(2) flyash in step (1) in Double shaft stirring humidifier and dedusting ash are tentatively humidified by Double shaft stirring humidifier, are kept away
Exempt from dust raising phenomenon occur, the dust after being humidified；
(3) dust after humidifying obtained in step (2) enters in slurrying pond through piping, is sufficiently mixed with the water in pond, passes through
It is pressurizeed after double-layer stirring device stirring in slurrying pond by the slush pump of slurrying bottom of pond portion and is sent through pipeline to the discharge pipe in stockyard
In, mortar is discharged into specified mortar pool through discharge pipe, and multiple mortar pools use in turn；
(4) mortar of the mortar pool curing molding after 2-3 days is discharged into step (3), by manually in the mortar pool cofferdam solidified
Cofferdam has been built in inside again, while laying antiseepage film, as new mortar pool, eventually forms slag muck；
Antiseepage film thickness described in step (4) is not less than 0.5mm；
Slag muck described in step (4) is the truncated rectangular pyramids shape of rule；
Slag muck described in step (4) can be used for making machine-made baking-free brick after dusting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811215248.4A CN109289669B (en) | 2018-10-18 | 2018-10-18 | A kind of system and its processing method of environmental protection convenient treated coal ash and dedusting ash |
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| CN201811215248.4A CN109289669B (en) | 2018-10-18 | 2018-10-18 | A kind of system and its processing method of environmental protection convenient treated coal ash and dedusting ash |
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| CN109289669A CN109289669A (en) | 2019-02-01 |
| CN109289669B true CN109289669B (en) | 2019-10-29 |
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| CN109970433A (en) * | 2019-04-02 | 2019-07-05 | 淄博山鼎陶瓷技术有限公司 | The new recovering technology of waste material before building ceramic tiles are burnt into |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206109344U (en) * | 2016-09-09 | 2017-04-19 | 新疆广汇中化能源技术开发有限公司 | Forming device of raw coke oven gas high temperature dust removal ash |
| CN206276272U (en) * | 2016-12-14 | 2017-06-27 | 内蒙古中谷矿业有限责任公司 | A kind of furnace of calcium carbide purifying and dedusting ash handling plant |
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| CN203346449U (en) * | 2013-07-22 | 2013-12-18 | 重庆赛迪工业炉有限公司 | Metallurgical dust mudsludge homogenizing granulation system |
| KR101842929B1 (en) * | 2016-08-09 | 2018-03-29 | 주식회사 서호엔텍 | Dry reactor for efficiency enhancement of acdity gas and reactant |
| CN106402846B (en) * | 2016-08-19 | 2018-09-25 | 福建永恒能源管理有限公司 | One kind having the vertical pulverized-coal fired boiler of bottom type double burner twin furnace |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206109344U (en) * | 2016-09-09 | 2017-04-19 | 新疆广汇中化能源技术开发有限公司 | Forming device of raw coke oven gas high temperature dust removal ash |
| CN206276272U (en) * | 2016-12-14 | 2017-06-27 | 内蒙古中谷矿业有限责任公司 | A kind of furnace of calcium carbide purifying and dedusting ash handling plant |
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