CN108126974A - Filter residue drying system and method after a kind of incineration of refuse flyash or the elution dechlorination of kiln ash - Google Patents
Filter residue drying system and method after a kind of incineration of refuse flyash or the elution dechlorination of kiln ash Download PDFInfo
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- CN108126974A CN108126974A CN201810112823.1A CN201810112823A CN108126974A CN 108126974 A CN108126974 A CN 108126974A CN 201810112823 A CN201810112823 A CN 201810112823A CN 108126974 A CN108126974 A CN 108126974A
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- flying dust
- finished product
- filter residue
- mixing apparatus
- drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
Abstract
The present invention relates to filter residue drying system and methods after a kind of incineration of refuse flyash or the elution dechlorination of kiln ash.Its purpose is to provide a kind of efficient, the energy-saving and environment-friendly flying dust of processing or kiln ash to elute filter residue drying system and method after dechlorinating.The present invention includes levigate mixed material device, flying dust elutes dechlorination device, pre-mixing apparatus, drying unit, dust arrester installation, finished product flying dust warehouse and controller, the filter residue delivery outlet of flying dust elution dechlorination device is connected with the first entrance of pre-mixing apparatus, the dust outlet of levigate mixed material device is connected with the second entrance of pre-mixing apparatus, the outlet of pre-mixing apparatus is connected with the entrance of drying unit, the outlet of drying unit is connected with the entrance of dust arrester installation, loading head outlet on dust arrester installation is connected with the entrance of finished product flying dust warehouse, the offgas outlet of dust arrester installation is connected with the gas inlet of exhaust gas purification system, it the finished product flying dust outlet of finished product flying dust warehouse and the second entrance of pre-mixing apparatus and prepares clinker unit entrance and connects.
Description
Technical field
The present invention relates to incineration of refuse flyash or kiln ash process field, more particularly to a kind of incineration of refuse flyash or kiln ash
Filter residue drying system and furnace drying method after elution dechlorination.
Background technology
Burn one of three big major techniques as solid waste processing disposition, have take up an area less, volume reduction reduction rate height,
The advantage of innoxious thorough, recovering energy source etc..With energy crisis, metropolitan rapid development, incineration technology is got over
Carry out more uses, the burning disposal ratio of life in China rubbish is also rising year by year, and waste incineration has become important rubbish
One of rubbish processing means.
The secondary pollution product of waste incineration all the time --- flying ash is the problem of Ge Ling governments and expert's headache.
The processing means such as storage, landfill, sintering develop successively, and with the proposition that sustainable development needs, recycling is building
Material is also more and more paid attention to, but the inorganic villaumite of flying dust middle and high concentration can not only reduce the matter of resource product
Amount, and production process can be destroyed, in addition, inorganic villaumite can adversely affect the other modes of flying dust processing disposition.By
The pretreated inorganic villaumite of desalination is alternatively arranged as recycling.The very effective mode of current flying dust harmlessness disposing is pair
Flying dust carries out " elution " pretreatment, certainly most of soluble villaumites in flying dust is got rid of, then dried, afterwards into cement kiln
It is calcined.Using the high temperature of cement kiln, the heavy metal in flying dust is made to be fixed in cement lattice, Shi bioxin thoroughly decomposes,
It is made not have synthesis condition.Harmlessness disposing finally is carried out to flying dust.
Chinese invention patent application No. is 201010162532.7 discloses a kind of cement kiln collaboration processing house refuse
The method of flying ash, wherein flying dust is carried out to elute the side for pre-processing and being delivered to cement kiln high-temperature section calcining after drying and processing
Method.But this method, in actual operation since the content of calcium oxide in flying dust is high, grain size is small, the flying dust after elution pre-processes
Filter residue moisture content it is high, and easily caking be easy to cause in drying, makes dryer internal junction wall, blocks, cause drying efficiency
It substantially reduces, consumes a large amount of energy, and tail gas is not handled after the drying, influence is caused on ambient enviroment.
Chinese patent application No. is 201420451435.3 discloses a kind of domestic garbage incineration flyash filter cake drying system
System, by the flying dust filter cake after separation of solid and liquid by screw conveyor with together with drying flying dust into colter mixer, after by entering
Material scraper-trough conveyer enters drying machine drying.And the tail gas after drying has entered quality coal in cement kiln systems again.The problem of method is：First, it is opening
It when beginning to run, is used without the drying flying dust of sufficient amount for it, and finished product flying dust is used alone to mix in engineering, also make it
Drying effect is undesirable；2nd, the tail gas after drying is directly discharged into rotary kiln, due to containing a large amount of moisture and nuisance in tail gas
Matter etc. easily has an adverse effect to the production of rotary kiln, and can increase the energy consumption of cement kiln, increases manufacturing cost.
Efficient, environmentally friendly place can not be carried out for incineration of refuse flyash in the relevant technologies or the drying and processing after the elution of kiln ash
The problem of reason, currently no effective solution has been proposed.
Invention content
The technical problem to be solved in the present invention is to provide a kind of efficient, the energy-saving and environment-friendly incineration of refuse flyash of processing or kiln ashes
Filter residue drying system and furnace drying method after elution dechlorination.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein, including levigate mixing
Expect device, flying dust elution dechlorination device, pre-mixing apparatus, drying unit, dust arrester installation, finished product flying dust warehouse and controller, fly
The filter residue delivery outlet of ash elution dechlorination device is connected with the first entrance of pre-mixing apparatus, the powder output of levigate mixed material device
Mouth is connected with the second entrance of pre-mixing apparatus, and the delivery outlet of pre-mixing apparatus is connected with the entrance of drying unit, drying unit
Outlet connected with the entrance of dust arrester installation, the dust outlet of dust arrester installation is connected with the entrance of finished product flying dust warehouse, and gather dust dress
The offgas outlet put is connected with the gas inlet of exhaust gas purification system, and the finished product flying dust outlet of finished product flying dust warehouse is attached together with premix
The second entrance connection put, the control signal output of controller respectively with the control signal receiving end of pre-mixing apparatus and drying
The control signal receiving end electrical connection of device.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein the drying system is also
Including supply unit, supply unit includes the first conveying device and the second conveying device again, and the first conveying device is arranged on flying dust
It elutes between dechlorination device and pre-mixing apparatus；Second conveying device be arranged on levigate mixed material device and pre-mixing apparatus it
Between, the control signal output of controller is electrically connected with the control signal receiving end of supply unit.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein the drying system is also
Including metering units, metering units include the first metering device, the second metering device and third metering device, the first metering dress again
It puts and is arranged between flying dust elution dechlorination device and the first conveying device；Second metering device be arranged on levigate mixed material device with
Between second conveying device；Third metering device is arranged between finished product flying dust warehouse and the second conveying device, the control of controller
Signal output end processed is electrically connected with the control signal receiving end of metering units.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein the dust arrester installation with
The second wind turbine is provided between exhaust gas purification system, the control signal output of controller and the control signal of the second wind turbine receive
End electrical connection.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein the drying system is also
Including rotary kiln residual heat system, the heat outlet of rotary kiln residual heat system is connected with the hot gas inlet of drying unit, drying unit
The first wind turbine, the control signal output of controller and the control signal of the first wind turbine are provided between rotary kiln residual heat system
Receiving terminal is electrically connected.
Filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein the finished product flying dust stores up
The flying dust outlet in storehouse is connected with preparing the feeding mouth of clinker unit.
Filter residue furnace drying method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein, include the following steps：
Step S1：Filter residue after flying dust elution dechlorination device elution and lime powder are delivered to pre-mixing apparatus
In be sufficiently mixed or will by flying dust elute dechlorination device elution after filter residue and finished product fly ash carry to premix attach together
It is sufficiently mixed in putting or filter residue, lime powder and finished product flying dust after dechlorination device elutes will be eluted by flying dust
It is delivered in pre-mixing apparatus and is sufficiently mixed；
Step S2：Mixture after being sufficiently mixed is transported in drying unit and is dried；
Step S3：The finished product flying dust of gained is passed through dust arrester installation after being dried in drying unit；
Step S4：Finished product flying dust after drying is passed through finished product flying dust warehouse and is collected by dust arrester installation, and tail gas is passed through
Exhaust gas purification system carries out vent gas treatment；
Step S5：Finished product flying dust in pre-mixing apparatus is passed through according to the collecting amount of finished product flying dust in finished product flying dust warehouse
Amount is controlled, in the state of not having finished product flying dust in finished product flying dust warehouse, only by the calcium oxide powder in levigate mixed material device
End is passed through pre-mixing apparatus；
In finished product flying dust warehouse in the state of a small amount of finished product flying dust, the mixed material of finished product flying dust and lime powder is led to
Enter pre-mixing apparatus；
Finished product flying dust is enough in finished product flying dust warehouse, while drying temperature can reach moisture content after being dried to finished product flying dust and want
In the state of asking, finished product flying dust is only passed through pre-mixing apparatus；
Finished product flying dust is enough in finished product flying dust warehouse, while drying temperature cannot reach to moisture content after the drying of finished product flying dust
In the state of it is required that, finished product flying dust and lime powder are passed through pre-mixing apparatus simultaneously；
Finished product flying dust is enough in finished product flying dust warehouse, while drying temperature cannot reach to moisture content after the drying of finished product flying dust
In the state of it is required that, lime powder is only passed through pre-mixing apparatus；
Step S6：Repeat the operation in step 1 to step 5.
Filter residue furnace drying method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein in the step 1, it is right
The filter residue weight being delivered in pre-mixing apparatus is measured, and the moisture content of filter residue is 40wt% to 60wt%, filter residue after mixing
Moisture content be 15wt% to 30wt%.
Filter residue furnace drying method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein in the step S2,
The moisture content of gained finished product flying dust is 1wt% to 5wt% after drying.
Filter residue furnace drying method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, wherein in the step S5,
Mixture in pre-mixing apparatus is lime powder and filter residue, then the weight ratio of lime powder and filter residue is 100:25 to
100:35；Mixture in pre-mixing apparatus is finished product flying dust and filter residue, then the weight ratio of finished product flying dust and filter residue is 100:10
To 100:20；Mixture in pre-mixing apparatus is finished product flying dust, lime powder and filter residue, then finished product flying dust and calcium oxide powder
The weight ratio of end and filter residue is 100:80:20 to 100:60:40.
After a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash filter residue drying system and method with the prior art not
It is with part：Pending flying dust or kiln ash are sufficiently mixed by the present invention by pre-mixing apparatus with lime powder, oxygen
Change calcium powder to react to the moisture in flying dust either kiln ash the preliminary water content reduced in flying dust or kiln ash, then
Mixed material is fully heated by drying unit, ensures that the drying of finished product flying dust is abundant.Remaining finished product is flown
Ash can be transmitted back to pre-mixing apparatus and be dried again, ensure that all flying dusts all carry out processing cmpletely.Pass through flying dust
It elutes dechlorination device and desalting processing is carried out to pending flying dust or kiln ash, it is more efficient when making follow-up drying and processing.Pass through
Controller respectively controls the working condition of pre-mixing apparatus and drying unit, and the degree of automation greatly improves.The present invention
Processing is efficient, energy conservation and environmental protection, compared with prior art with clear advantage.
Below in conjunction with the accompanying drawings to the present invention a kind of incineration of refuse flyash or kiln ash elution dechlorination after filter residue drying system and
Method is described further.
Description of the drawings
Fig. 1 is the structure diagram of filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash.
Specific embodiment
As shown in Figure 1, the structure for filter residue drying system after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash
Schematic diagram elutes dechlorination device 16, for mixed material including metering units, supply unit, levigate mixed material device 12, flying dust
Pre-mixing apparatus 6, drying unit 7, finished product flying dust warehouse 8, dust arrester installation 9, prepare clinker unit 14, rotary kiln waste heat
System 13, exhaust gas purification system 15 and controller, metering units include the first metering device 1, the second metering device 2 and third again
Metering device 3, supply unit include the first conveying device 4 and the second conveying device 5 again, and the first conveying device 4 uses spiral transferring
Device is sent, the second conveying device 5 uses Pneumatic conveyer or helix transporting device.Flying dust elutes the filter residue of dechlorination device 16
Delivery outlet is connected by the first conveying device 4 with the first entrance of pre-mixing apparatus 6, flying dust elution dechlorination device 16 and first defeated
It send and is provided with the first metering device 1 between device 4, pass sequentially through the first metering device 1 and the first conveying device 4 will be after elution
Flying dust filter residue is delivered in pre-mixing apparatus 6 and is sufficiently mixed.The powder delivery outlet of levigate mixed material device 12 passes through second
Conveying device 5 is connected with the second entrance of pre-mixing apparatus 6, is set between levigate 12 and second conveying device 5 of mixed material device
Have the second metering device 2, pass sequentially through the second metering device 2 and the second conveying device 5 will be levigate after lime powder conveying
It is sufficiently mixed into pre-mixing apparatus 6.The delivery outlet of pre-mixing apparatus 6 is connected with the entrance of drying unit 7, drying unit
7 outlet is connected with the entrance of dust arrester installation 9, and the dust outlet of dust arrester installation 9 is connected with the entrance of finished product flying dust warehouse 8, is led to
Crossing dust arrester installation 9 will store in the finished product fly ash carry after drying to finished product flying dust warehouse 8, and finished product flying dust warehouse 8 flies
Ash outlet is connected with preparing the feeding mouth of clinker unit 14, by the finished product fly ash carry collected in finished product flying dust warehouse 8 extremely
It prepares in clinker unit 14 and cement is made.The offgas outlet of dust arrester installation 9 connects with the gas inlet of exhaust gas purification system 15
It is logical, the pernicious gas in tail gas is passed through exhaust gas purification system 15 and carries out purified treatment, reaches right after national exhaust emission standard
It is outer to be discharged, the second wind turbine 11 is provided between dust arrester installation 9 and exhaust gas purification system 15.Finished product flying dust warehouse 8 flies
Ash outlet is also connected by the second conveying device 5 with the second entrance of pre-mixing apparatus 6, and finished product flying dust warehouse 8 and second conveys
Be provided with third metering device 3 between device 5, the finished product flying dust in finished product flying dust warehouse 8 can be delivered in pre-mixing apparatus 6 into
Row is sufficiently mixed, and the flying dust outlet of finished product flying dust warehouse 8 is provided with screw(-type) feeder, is stored up finished product flying dust by screw(-type) feeder
In fly ash carry to third metering device 3 in storehouse 8.The hot gas inlet of drying unit 7 and the hot gas of rotary kiln residual heat system 13
Outlet provides enough heats into drying unit 7, in drying unit 7 and rotary kiln by rotary kiln residual heat system 13
The first wind turbine 10 is provided between residual heat system 13.
In the present invention control signal output of controller respectively with control signal receiving end, the supply unit of metering units
Control signal receiving end, pre-mixing apparatus 6 control signal receiving end, the control signal receiving end of drying unit 7, the first wind
The control signal receiving end electrical connection of the control signal receiving end and the second wind turbine 11 of machine 10, it is single to metering respectively by controller
Member, supply unit, pre-mixing apparatus 6, drying unit 7, the first wind turbine 10 and the second wind turbine 11 working condition controlled, into
And the ratio for being delivered to mixed material in pre-mixing apparatus 6 can be controlled.
In some embodiments of the present invention, used pre-mixing apparatus 6 is colter mixer.
In some embodiments of the present invention, used drying unit 7 is vertical air flow dryer.
In some embodiments of the present invention, used dust arrester installation 9 is bagroom or cottrell.
Some of the present invention are in example, and used controller is PLC controller.
Filter residue furnace drying method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, includes the following steps：
Step S1：Filter residue after flying dust elution dechlorination device 16 elutes and lime powder are delivered to premix and attached together
It puts and is sufficiently mixed in 6 or by the filter residue after flying dust elution dechlorination device 16 elutes and finished product fly ash carry to pre-
Be sufficiently mixed in mixing arrangement 6 or by by flying dust elution dechlorination device 16 elute after filter residue, lime powder and
It is sufficiently mixed in finished product fly ash carry to pre-mixing apparatus 6.
The filter residue weight being delivered in pre-mixing apparatus 6 is measured, the moisture content of filter residue is 40wt% to 60wt%
(wt% refers to weight percentage), the moisture content of filter residue is 15wt% to 30wt% after mixing.
Step S2：Mixture after being sufficiently mixed is transported in drying unit 7 and is dried, gained finished product flies after drying
The moisture content of ash is 1wt% to 5wt%.
Step S3：The finished product flying dust of gained is passed through dust arrester installation 9 after being dried in drying unit 7.
Drying unit 7, as drying heat source, will be returned using the heat in rotary kiln residual heat system 13 by the second wind turbine 11
Heat in rotary kiln residual heat system 13 is blown into the form of hot wind in drying unit 7.
Step S4：Finished product flying dust after drying is passed through finished product flying dust warehouse 8 and is collected by dust arrester installation 9, and tail gas is led to
Enter exhaust gas purification system 15 and carry out vent gas treatment.
Pernicious gas in tail gas is passed through after exhaust gas purification system 15 purifies and externally discharges.
Step S5：Finished product flying dust in pre-mixing apparatus 6 is led to according to the collecting amount of finished product flying dust in finished product flying dust warehouse 8
Enter amount to be controlled.
In the state of there is no finished product flying dust in finished product flying dust warehouse 8, only by the calcium oxide powder in levigate mixed material device 12
End is passed through pre-mixing apparatus 6；
In finished product flying dust warehouse 8 in the state of a small amount of finished product flying dust, by finished product flying dust and the mixed material of lime powder
It is passed through pre-mixing apparatus 6；
In a state that finished product flying dust is enough in finished product flying dust warehouse 8, and material is passed through into pre-mixing apparatus 6 there are three kinds
Situation：Finished product flying dust is enough in finished product flying dust warehouse 8, while drying temperature can reach moisture content after being dried to finished product flying dust and want
In the state of asking, finished product flying dust is only passed through pre-mixing apparatus 6；Finished product flying dust is enough in finished product flying dust warehouse 8, while dries temperature
Degree cannot reach in the state of water content requirement after the drying of finished product flying dust, finished product flying dust and lime powder being passed through simultaneously pre-
Mixing arrangement 6；Finished product flying dust is enough in finished product flying dust warehouse 8, while drying temperature cannot reach to containing after the drying of finished product flying dust
In the state of the requirement of water rate, lime powder is only passed through pre-mixing apparatus 6；
Mixture in pre-mixing apparatus 6 is lime powder and filter residue, then the weight ratio of lime powder and filter residue is
100:25 to 100:35；Mixture in pre-mixing apparatus 6 is finished product flying dust and filter residue, then the weight ratio of finished product flying dust and filter residue
It is 100:10 to 100:20；Mixture in pre-mixing apparatus 6 is finished product flying dust, lime powder and filter residue, then finished product flying dust
It is 100 with the weight ratio of lime powder and filter residue:80:20 to 100:60:40.
Step S6：Repeat the operation in step 1 to step 5.
The present invention can input filter residue moisture content, finished product flying dust after flying dust elution in actual mechanical process into controller
After moisture content and mixing after material content parameter, situation and moisture content are added according to filter residue, controller can be according to the first meter
The amount of filter residue carrys out the automatic dosage for calculating lime powder and finished product flying dust in amount device 1.Controller is levigate mixed by controlling
The screw(-type) feeder frequency conversion revolution that apparatus for material combining 12 and finished product flying dust warehouse 8 export controls lime powder and finished product flying dust
Dosage, it is final true by the frequency conversion revolution for the screw batcher that the metrology feedback added, finished product flying dust warehouse 8 export
Determine the dosage of lime powder and finished product flying dust.
Do not have when operating early period or during only a small amount of finished product flying dust, all lime powders of mixture may be selected
Or lime powder and the mixture of finished product flying dust by a certain percentage；
When the middle and later periods, operating there are enough finished product flying dusts, all finished product flying dusts of mixture may be selected；
When the filter residue after flying dust elution is reduced, the value of feedback that controller receives the first metering device 1 reduces, controller
It is carried out automatically controlling automatically according to preset calculation formula, reduces the dosage of lime powder or finished product flying dust；
When the filter residue after flying dust elution increases, the value of feedback that controller receives the first metering device 1 subtracts greatly, controller
It is carried out automatically controlling automatically according to preset calculation formula, increases the dosage of lime powder or finished product flying dust.
After operating personnel obtain the instruction of modification finished product flying dust moisture content, it is aqueous only need to change finished product flying dust in controller
The parameter of rate, control device can carry out analog quantity adjusting automatically according to inner setting calculation formula, increase or decrease mixture or
The dosage of finished product flying dust.
Filter residue drying system and method after a kind of incineration of refuse flyash of the present invention or the elution dechlorination of kiln ash, are attached together by premix
Putting 6, either kiln ash is sufficiently mixed with lime powder the water in calcium oxide powder foot couple flying dust or kiln ash by pending flying dust
Point react, the preliminary water content reduced in flying dust or kiln ash, then by drying unit 7 to mixed material into
Row fully heating ensures that the drying of finished product flying dust is abundant.Pre-mixing apparatus 6 can be transmitted back to for remaining finished product flying dust and carry out weight
New drying, ensures that all flying dusts all carry out processing cmpletely.Dechlorination device 16 is eluted to pending flying dust by flying dust
Or kiln ash carries out desalting processing, it is more efficient when making follow-up drying and processing.Filter after from the conveying elution to pre-mixing apparatus 6
During slag, lime powder and finished product flying dust, measured respectively by the first metering device 1, the second metering device 2 and third
Device 3 measures conveying capacity, and passes through controller and conveying capacity is controlled, ensure finished product flying dust, lime powder and
Proportionally mixed and conveyed between filter residue, so guarantee that the moisture in pending flying dust fully absorb and
Drying.Cement is made to preparing in clinker unit 14 in the finished product fly ash carry being collected into, it is follow-up to solve finished product flying dust
The problem of processing.Heat in rotary kiln residual heat system 13 is passed through by drying unit 7 in the form of hot wind by the first wind turbine 10
In, the drying to mixed material can be completed, the hot wind for being passed through drying unit 7 again can be to the dirt and residue in drying unit 7
Impurity is cleared up in real time, solves the problems, such as encrustation and blocking entry and exit after the long-time service of 7 inner wall of drying unit.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to the technical side of the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain that claims of the present invention determines.
Claims (10)
1. a kind of filter residue drying system after incineration of refuse flyash or the elution dechlorination of kiln ash, it is characterised in that：Including levigate mixture
Device (12), flying dust elution dechlorination device (16), pre-mixing apparatus (6), drying unit (7), dust arrester installation (9), finished product flying dust
Warehouse (8) and controller, the filter residue delivery outlet of flying dust elution dechlorination device (16) connect with the first entrance of pre-mixing apparatus (6)
Logical, the powder delivery outlet of levigate mixed material device (12) is connected with the second entrance of pre-mixing apparatus (6), pre-mixing apparatus (6)
Delivery outlet connected with the entrance of drying unit (7), the outlet of drying unit (7) is connected with the entrance of dust arrester installation (9), is gathered dust
The dust outlet of device (9) is connected with the entrance of finished product flying dust warehouse (8), the offgas outlet and tail gas clean-up of dust arrester installation (9)
The gas inlet connection of system (15), the finished product flying dust outlet of finished product flying dust warehouse (8) and the second entrance of pre-mixing apparatus (6)
Connection, the control signal output of controller respectively with the control signal receiving end of pre-mixing apparatus (6) and drying unit (7)
Control signal receiving end electrical connection.
2. filter residue drying system after a kind of incineration of refuse flyash according to claim 1 or the elution dechlorination of kiln ash, feature
It is：The drying system further includes supply unit, and supply unit includes the first conveying device (4) and the second conveying device again
(5), the first conveying device (4) is arranged between flying dust elution dechlorination device (16) and pre-mixing apparatus (6)；Second conveying device
(5) it is arranged between levigate mixed material device (12) and pre-mixing apparatus (6), the control signal output of controller and conveying are single
The control signal receiving end electrical connection of member.
3. filter residue drying system after a kind of incineration of refuse flyash according to claim 2 or the elution dechlorination of kiln ash, feature
It is：The drying system further includes metering units, and metering units include the first metering device (1), the second metering device (2) again
With third metering device (3), the first metering device (1) is arranged on flying dust elution dechlorination device (16) and the first conveying device (4)
Between；Second metering device (2) is arranged between levigate mixed material device (12) and the second conveying device (5)；Third metering dress
It puts (3) to be arranged between finished product flying dust warehouse (8) and the second conveying device (5), the control signal output of controller and metering
The control signal receiving end electrical connection of unit.
4. filter residue drying system after a kind of incineration of refuse flyash according to claim 1 or the elution dechlorination of kiln ash, feature
It is：The second wind turbine (11), the control signal of controller are provided between the dust arrester installation (9) and exhaust gas purification system (15)
Output terminal is electrically connected with the control signal receiving end of the second wind turbine (11).
5. filter residue drying system after a kind of incineration of refuse flyash according to claim 1 or the elution dechlorination of kiln ash, feature
It is：The drying system further includes rotary kiln residual heat system (13), the heat outlet of rotary kiln residual heat system (13) and drying
The hot gas inlet connection of device (7), is provided with the first wind turbine (10) between drying unit (7) and rotary kiln residual heat system (13),
The control signal output of controller is electrically connected with the control signal receiving end of the first wind turbine (10).
6. filter residue drying system after a kind of incineration of refuse flyash according to claim 1 or the elution dechlorination of kiln ash, feature
It is：The finished product flying dust outlet of the finished product flying dust warehouse (8) is connected with preparing the feeding mouth of clinker unit (14).
7. filter residue furnace drying method after a kind of incineration of refuse flyash or kiln ash the elution dechlorination used in claim 1, feature exist
In：Include the following steps：
Step S1：Filter residue after flying dust elution dechlorination device (16) elutes and lime powder are delivered to pre-mixing apparatus
(6) it is sufficiently mixed in or the filter residue after dechlorination device (16) elutes and finished product fly ash carry will be eluted extremely by flying dust
It is sufficiently mixed in pre-mixing apparatus (6) or the filter residue after dechlorination device (16) elutes, calcium oxide will be eluted by flying dust
It is sufficiently mixed in powder and finished product fly ash carry to pre-mixing apparatus (6)；
Step S2：Mixture after being sufficiently mixed is transported in drying unit (7) and is dried；
Step S3：The finished product flying dust of gained is passed through dust arrester installation (9) after drying in drying unit (7)；
Step S4：Finished product flying dust after drying is passed through finished product flying dust warehouse (8) and is collected by dust arrester installation (9), and tail gas is led to
Enter exhaust gas purification system (15) and carry out vent gas treatment；
Step S5：Finished product flying dust in pre-mixing apparatus (6) is led to according to the collecting amount of finished product flying dust in finished product flying dust warehouse (8)
Enter amount to be controlled, it, only will be in levigate mixed material device (12) in the state of there is no finished product flying dust in finished product flying dust warehouse (8)
Lime powder is passed through pre-mixing apparatus (6)；
In finished product flying dust warehouse (8) in the state of a small amount of finished product flying dust, the mixed material of finished product flying dust and lime powder is led to
Enter pre-mixing apparatus (6)；
Finished product flying dust is enough in finished product flying dust warehouse (8), while drying temperature can reach moisture content after being dried to finished product flying dust and want
In the state of asking, finished product flying dust is only passed through pre-mixing apparatus (6)；
Finished product flying dust is enough in finished product flying dust warehouse (8), while drying temperature cannot reach to moisture content after the drying of finished product flying dust
In the state of it is required that, finished product flying dust and lime powder are passed through pre-mixing apparatus (6) simultaneously；
Finished product flying dust is enough in finished product flying dust warehouse (8), while drying temperature cannot reach to moisture content after the drying of finished product flying dust
In the state of it is required that, lime powder is only passed through pre-mixing apparatus (6)；
Step S6：Repeat the operation in step 1 to step 5.
8. filter residue furnace drying method after a kind of incineration of refuse flyash according to claim 7 or the elution dechlorination of kiln ash, feature
It is：In the step 1, the filter residue weight being delivered in pre-mixing apparatus (6) is measured, the moisture content of filter residue is
40wt% to 60wt%, the moisture content of filter residue is 15wt% to 30wt% after mixing.
9. filter residue furnace drying method after a kind of incineration of refuse flyash according to claim 7 or the elution dechlorination of kiln ash, feature
It is：In the step S2, the moisture content of gained finished product flying dust is 1wt% to 5wt% after drying.
10. filter residue furnace drying method after a kind of incineration of refuse flyash according to claim 7 or the elution dechlorination of kiln ash, feature
It is：In the step S5, the mixture in pre-mixing apparatus (6) is lime powder and filter residue, then lime powder and filter
The weight ratio of slag is 100:25 to 100:35；Mixture in pre-mixing apparatus (6) is finished product flying dust and filter residue, then finished product flying dust
Weight ratio with filter residue is 100:10 to 100:20；Mixture in pre-mixing apparatus (6) is finished product flying dust, lime powder and
Filter residue, then finished product flying dust and the weight ratio of lime powder and filter residue are 100:80:20 to 100:60:40.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810112823.1A CN108126974A (en) | 2018-02-05 | 2018-02-05 | Filter residue drying system and method after a kind of incineration of refuse flyash or the elution dechlorination of kiln ash |
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| CN201810112823.1A CN108126974A (en) | 2018-02-05 | 2018-02-05 | Filter residue drying system and method after a kind of incineration of refuse flyash or the elution dechlorination of kiln ash |
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