CN105731840B - By the device and method that garbage flying ash disposition is cement raw material - Google Patents
By the device and method that garbage flying ash disposition is cement raw material Download PDFInfo
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- CN105731840B CN105731840B CN201610108231.3A CN201610108231A CN105731840B CN 105731840 B CN105731840 B CN 105731840B CN 201610108231 A CN201610108231 A CN 201610108231A CN 105731840 B CN105731840 B CN 105731840B
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- spurts
- bioxin
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 83
- 239000004568 cement Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002994 raw material Substances 0.000 title claims abstract description 25
- 239000002956 ash Substances 0.000 claims abstract description 107
- 239000010881 fly ash Substances 0.000 claims abstract description 41
- 239000008187 granular material Substances 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims description 77
- 239000007789 gas Substances 0.000 claims description 46
- 239000002817 coal dust Substances 0.000 claims description 16
- 230000009347 mechanical transmission Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000004566 building material Substances 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005243 fluidization Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 241000370738 Chlorion Species 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses by the device and method that garbage flying ash disposition is cement raw material, wherein described device include cement kiln, the stove that spurts offline, fly ash carry device and separator；The fly ash carry device, for garbage flying ash to be delivered to the offline stove that spurts；The offline stove that spurts handles garbage flying ash, the fly ash granule in garbage flying ash is detached He bioxin by the hot wind drawn from the cement kiln；The fly ash carry device by comprising fly ash granule He the air of bioxin is separated into fly ash granule and comprising the air of bioxin, and export fly ash granule from the ash releasing tube of the separator, the air comprising bioxin is exported from the exhaust duct of the separator to the cement kiln；The cement kiln carries out high temperature incineration to the air Zhong bioxin comprising bioxin.The present apparatus has the characteristics that flow is simple, low energy consumption, cost of disposal is low, present apparatus water is less, has saved certain water resource compared with existing wet processing.
Description
Technical field
The present invention relates to the process field of garbage flying ash more particularly to it is a kind of by garbage flying ash disposition be cement raw material dress
It sets and method.
Background technology
Garbage flying ash contains higher heavy metal He the substances such as toxicity of dioxin, belong to hazardous waste due to it.Rubbish flies
Traditional disposal options of ash are to enter hazardous waste security landfill field.In recent years, for the joint disposal of garbage flying ash, China takes
Some achievements in research were obtained, the main component and clinker of the garbage flying ash generated due to waste incineration are substantially close, can
To substitute the part material in manufacture of cement (such as clay, lime stone etc.), by the clinker high-temperature calcination stage, the weight in flying dust
Metal is He bioxin is volatilized and decomposed, to realize the comprehensive utilization of resources of flying dust.
But contain a large amount of villaumite in flying ash, when flying dust is in the clinker high temperature firing stage, there are high temperature for chlorion
The phenomenon that volatilization, low temperature solidification enrichment, firing system Coating clogging is easily caused, while can also influence clinker quality.
For the above technological difficulties, domestic scientific research institutes carries out some research work, open in patent CN101333084A
A kind of garbage flying ash pretreating process becomes the process of cement raw material, and technical process is flying dust through washing, stirring, and is thrown
After aggravating the pretreating process such as metallic stabilizer, it is re-fed into cement kiln and is prepared into cement through calcining.The technique flying dust need to pass through water
It washes, stirs, multiple processing steps such as addition additive, process is complicated, in the water-washing process of flying dust, needs to consume a large amount of life
Water is applied flexibly, the waste water after disposition needs to add waste water dis posal system, and entire technology investment is larger, and operating cost is high.
In CN101386481A, a kind of chlorion removed using bypass technology in garbage flying ash is disclosed, burning is realized and flies
Ash prepares the technical method of clinker.The technique is on the basis of quality coal in cement kiln systems, by flying dust from existing kiln hood, kiln tail
Existing kiln system is sent at the positions such as smoke-box, dore furnace, and installs a set of bypass system, and the system one-time investment is big,
The bypass system of design and kiln type, the type of furnace have relationship, this technology needs bypass system continuous operation, Cai Nengbao
Card effectively reduces chloride ion content in flying dust.Bypass system has the ratio leaked informaton certain limitation, to chlorine in raw material from
Sub- concentration there are certain requirements.In addition the kiln ash for bypassing releasing needs after-treatment.
Invention content
Purpose of the present invention is to a kind of by the device and method that garbage flying ash disposition is cement raw material, with existing wet method (water
Wash) technique compares, and have the characteristics that flow is simple, investment is low, low energy consumption, cost of disposal is low, is the important of future technical advances
Direction.
The present invention solves technical problem and adopts the following technical scheme that：A kind of dress disposed garbage flying ash as cement raw material
It sets comprising cement kiln, the stove that spurts offline, fly ash carry device and separator；
The fly ash carry device, for garbage flying ash to be delivered to the offline stove that spurts；
The offline stove that spurts handles garbage flying ash, rubbish is flown by the hot wind drawn from the cement kiln
Fly ash granule in ash is detached He bioxin；
The fly ash carry device by comprising fly ash granule He the air of bioxin is separated into fly ash granule and comprising Er Evil
The air of English, and fly ash granule is exported from the ash releasing tube of the separator, by the air comprising bioxin from described point
It is exported to the cement kiln from the exhaust duct of device；
The cement kiln carries out high temperature incineration to the air Zhong bioxin comprising bioxin.
Optionally, the fly ash carry device includes flying dust transmitting device and flying dust metering device；The flying dust transmission dress
It sets including Pneumatic conveyer and/or mechanical transmission device；The flying dust metering device includes flying dust storehouse and metering delivering balance；Institute
The discharge end for stating Pneumatic conveyer and mechanical transmission device is connected to the flying dust storehouse；It is arranged at the ash hole in the flying dust storehouse
There is gate, the gate can be closed or opened the ash hole in the flying dust storehouse, and the ash hole in the flying dust storehouse is positioned at described
Measure the surface of delivering balance.
Optionally, the air inlet of the offline stove that spurts is connected to the kiln head cover or three of the cement kiln by blast pipe
Secondary air hose.
Optionally, the air outlet of the offline stove that spurts is connected to by discharge pipe with separator, will contain fly ash granule with
The gas of bioxin is delivered to separator, the separator carry out material qi leel from；Treated fly ash granule is by separator bottom
Portion is drawn off, after cooling the admixture as production building material product；The decomposition of the air outlet of the separator and the cement kiln
Stove is connected to, and to discharge it the dore furnace burning that the low cloud of dust pneumatic transmission rich in bioxin enters cement kiln, Shi bioxin thoroughly decomposes.
The present invention solves technical problem and also adopts the following technical scheme that：A kind of side disposed garbage flying ash as cement raw material
Method comprising following steps：
S10, garbage flying ash is delivered to flying dust metering device by flying dust transmitting device；
S20, after measuring garbage flying ash by the flying dust metering device, it is delivered to the offline stove that spurts；
S30, the offline stove that spurts extract hot wind to the offline stove that spurts from the kiln head cover or tertiary-air pipe of cement kiln；
S40, garbage flying ash after fluidization, come into full contact with heat exchange with the hot wind, make garbage flying ash in the offline stove that spurts
Zhong bioxin is detached with fly ash granule, and bioxin is distributed in flue gas；
S50, the air delivery of Han bioxin and fly ash granule to separator is detached, fly ash granule is from separator
Bottom is drawn off, and the low cloud of dust rich in bioxin is discharged in the admixture as production building material product, the separator after cooling
The dore furnace that pneumatic transmission enters cement kiln burns, and Shi bioxin thoroughly decomposes；
Optionally, further include step S35 between the step S30 and step S40；
S35, coal dust is supplied to the offline stove that spurts by coal dust supplementary device, described is spurted in stove offline with improving
Temperature.
Optionally, garbage flying ash is in the most short residence time t to spurt offline in stove：
In formula：V is the dischargeable capacity of stove of spurting offline, and the horizontal position that the stove that spurts offline is entered from garbage flying ash calculates,
To the volume for the outlet of still that spurts offline；
Determine that furnace gas effective stay time of spurting offline is more than or equal to 3.0s.Therefore the above-mentioned stop being calculated
Time should be greater than being equal to 3.0s.
QpIt is averaged operating mode flow for the furnace gas that spurts offline；
K is that gas ash solid and gas is detained ratio.
Optionally, the offline furnace gas that spurts is averaged operating mode flow QpFor：
In formula：QbFor the furnace gas mark condition flow that spurts offline；
T is offline furnace gas mean temperature of spurting；
PdFor local atmospheric pressure；
PlFor the furnace gas average pressure that spurts offline.
Optionally, the offline furnace gas mark condition flow Q that spurtsbFor：
Qb=Qy+Qx+Qs
In formula：QyThe exhaust gas volumn generated for coal dust firing；
QxFor the stove inleakage that spurts offline；
QsFor the hot wind excess gas amount extracted from kiln head cover or tertiary-air pipe.
The present invention has the advantages that：It is provided by the invention for the method for cement raw material and to show garbage flying ash disposition
There is wet method (washing) technique to compare, have the characteristics that flow is simple, investment is low, low energy consumption, cost of disposal is low, is WeiLai Technology hair
The important directions of exhibition.
And it is provided by the invention by the device that garbage flying ash disposition is cement raw material, it can realize above-mentioned technical process, together
When also have the characteristics that investment it is low, low energy consumption and save water resource.
Description of the drawings
Fig. 1 is the structural schematic diagram by the device that garbage flying ash disposition is cement raw material of the embodiment of the present invention 1；
The mark in the figure shows：1- Pneumatic conveying pumps；2- delivery pipes；4- elevators；5- flying dusts storehouse；6- gates；7- flying dusts
Metering device；8- spurts stove offline；9- separators；10- dore furnaces；11- flying dust coolers；12- cement rotary kilns；13- kiln hoods
Cover；14- tertiary-air pipes；15- coal dust supplementary devices.
Specific implementation mode
Technical scheme of the present invention is further elaborated with reference to embodiment and attached drawing.
Embodiment 1
Present embodiments provide a kind of device by garbage flying ash disposition for cement raw material comprising cement kiln, offline spray
Rise stove, fly ash carry device and separator.
The fly ash carry device includes flying dust transmitting device and flying dust metering device；In the present embodiment, flown by described
The garbage flying ash is delivered to flying dust metering device by grey transmitting device, i.e., garbage flying ash is delivered to flying for flying dust metering device
The structure of ash cellar, the flying dust metering device will be by being described below.
The flying dust transmitting device may include Pneumatic conveyer and/or mechanical transmission device；The Geldart-D particle dress
It may include Pneumatic conveying pump to set；The mechanical transmission device can be bucket elevator etc.；The Pneumatic conveyer and machine
Tool conveying device both can be arranged while use simultaneously, and exclusive use can also be arranged simultaneously, can also be according to actual conditions only
A set of Pneumatic conveyer or a set of mechanical transmission device is separately provided, and only uses a set of transport system.
When the flying dust transmitting device of the present embodiment is realized by Pneumatic conveyer, the Pneumatic conveyer includes gas
Power delivery pump and delivery pipe；One end of the delivery pipe is connected to the air outlet of the Pneumatic conveying pump, and the other end flies with described
Ash cellar is connected to, to realize the conveying that the gas comprising garbage flying ash hoists from lower；When the flying dust of the present embodiment transmits
When device is realized by mechanical transmission device, the mechanical transmission device is bucket elevator, the upper end of the bucket elevator
Positioned at the surface of the upper opening in the flying dust storehouse, to realize the garbage flying ash of solid state by the bucket elevator
Transmission.
The flying dust metering device includes flying dust storehouse and metering delivering balance；The Pneumatic conveyer and mechanical transmission device
Discharge end be connected to the flying dust storehouse；Gate is provided at the ash hole in the flying dust storehouse, the gate can be closed or be beaten
The ash hole in the flying dust storehouse is opened, and the ash hole in the flying dust storehouse is located at the surface of the metering delivering balance.
When the garbage flying ash is delivered to flying dust storehouse, that is, when being delivered to the flying dust metering device, the flying dust measures
Device measures garbage flying ash, and the garbage flying ash after metering is delivered to the offline stove that spurts, at this point, the flying dust
Metering device includes flying dust storehouse and metering delivering balance, is provided with gate at the ash hole in the flying dust storehouse, the gate can be closed
Or the ash hole in the flying dust storehouse is opened, and the ash hole in the flying dust storehouse is located at the surface of the metering delivering balance, from
And when the gate opens the ash hole in the flying dust storehouse, the garbage flying ash in the flying dust storehouse is drop to automatically by gravity
On the metering delivering balance, and conveyed by the metering delivering balance；And work as flying dust storehouse described in the closing gate
When ash hole, do not pass through the metering delivering balance conveying garbage flying dust at this time.
In the present embodiment, when by garbage flying ash be delivered to it is offline spurt stove when, garbage flying ash is in the offline furnace interior quilt that spurts
The air inlet of processing, the offline stove that spurts described at this time is connected to the kiln head cover or tertiary air of the cement kiln by blast pipe
Pipe is sent into the stove that spurts offline as the heat source of desorption bioxin to extract hot wind from kiln head cover or tertiary-air pipe, makes garbage flying ash
Zhong bioxin is detached with fly ash granule, and bioxin is distributed in flue gas.
The air outlet of the offline stove that spurts is connected to by discharge pipe with separator, will contain fly ash granule He bioxin
Gas is delivered to separator, and material qi leel is carried out from treated, and fly ash granule is drawn off by separator bottom, warp in the separator
Admixture after cooling as building material products such as production cement, building block, ready-mixed concrete.The low cloud of dust that the separator is discharged
The dore furnace that gas (being rich in bioxin) is sent into cement kiln burns, and Shi bioxin thoroughly decomposes.
To ensure the temperature of the offline stove that spurts, in the present embodiment, described by garbage flying ash disposition is cement raw material
Device further includes coal dust supplementary device, with by the coal dust supplementary device to the offline stove supplying high temperature gas that spurts, from
And ensure the offline temperature spurted in stove.
It is described to fly rubbish in order to which the fly ash granule exported to the separator effectively cool down in the present embodiment
Ash disposition is that the device of cement raw material further includes flying dust cooler, the bottom of the feed inlet and the separator of the flying dust cooler
Portion's ash hole connection, discharge port are the fly ash granule exported after cooling.
In the present embodiment, when by garbage flying ash be delivered to it is described it is offline spurt stove when, the metering delivering balance can pass through
Airlock is by the offline stove that spurts of garbage flying ash feeding, and the offline stove that spurts is located at the kiln tail frame one of cement kiln
Side, the metering delivering balance can be rotor weigher or Coriolis scale, accurately to be measured to garbage flying ash.
The offline stove that spurts of the present embodiment has following technical characterstic：The furnace type structure of the stove that spurts offline is simple, bottom
There are one necking, middle parts can set a necking in portion, and rest part is cylinder.
Fluid (hot wind extracted from kiln head cover or tertiary-air pipe) is entered offline by the bottom necking for the stove that spurts offline
It spurts in stove.Because necking area is smaller, fluid is spurted in stove offline with the penetrating of higher speed.When powder (garbage flying ash) by
After entering outside the offline stove that spurts in the stove that spurts offline, can spurt dispersion with the thermal current (fluid) to spurt at a high speed, and equably
It is distributed in the furnace space of the offline stove that spurts, fully contacts and be heated with thermal current.Dust (garbage flying ash) after heated
As the offline gas stream in the stove that spurts continues up, takes out of via the outlet for the stove that spurts offline and spurt outside stove offline.
It is offline spurt stove combustion system the characteristics of be
1. the hot wind (tertiary air) from cement kiln (kiln head cover or tertiary-air pipe) enters at a high speed the stove that spurts offline, make rubbish
Flying dust disperses rapidly, is conducive to the removing of the organic pollutions such as bioxin；
2. fuel tolerance is strong, fuel ignition environment is in pure high-temperature flue gas, and fuel combustion is abundant；
3. high combustion efficiency, up to 93%~99%；
4. load adaptability is good.Load regulation range 40%~100%
The present invention provides a kind of by the device that garbage flying ash disposition is cement raw material, the present apparatus and existing wet method (washing) work
Skill is compared, and has the characteristics that flow is simple, investment is low, low energy consumption, cost of disposal is low, therefore, the present embodiment by garbage flying ash
Disposition is that the device water of cement raw material is less, has saved certain water resource, has been the important directions of future technical advances.
Embodiment 2
Present embodiments provide a kind of by the method that garbage flying ash disposition is cement raw material, method in the present embodiment can be with
Using the device in such as embodiment 1 comprising following steps：
S10, garbage flying ash is delivered to flying dust metering device by flying dust transmitting device；
S20, after measuring garbage flying ash by the flying dust metering device, it is delivered to the offline stove that spurts；
S30, the offline stove that spurts extract hot wind to the offline stove that spurts from the kiln head cover or tertiary-air pipe of cement kiln；
S40, garbage flying ash after fluidization, come into full contact with heat exchange with the hot wind, make garbage flying ash in the offline stove that spurts
Zhong bioxin is detached with fly ash granule, and bioxin is distributed in flue gas；
S50, the air delivery of Han bioxin and fly ash granule to separator is detached, fly ash granule is from separator
Bottom is drawn off, and the low cloud of dust rich in bioxin is discharged in the admixture as production building material product, the separator after cooling
The dore furnace that pneumatic transmission enters cement kiln burns, and Shi bioxin thoroughly decomposes.
In the present embodiment, it further includes step S35 between the step S30 and step S40 that the present embodiment, which flies method,；
S35, coal dust is supplied to the offline stove that spurts by coal dust supplementary device, described is spurted in stove offline with improving
Temperature.
In the present embodiment, garbage flying ash is in the most short residence time t to spurt offline in stove：
In formula：V is the dischargeable capacity of stove of spurting offline, and the horizontal position that the stove that spurts offline is entered from garbage flying ash calculates,
To the volume for the outlet of still that spurts offline；Spurt offline in the present embodiment stove dischargeable capacity be 51.24m3；
According to bioxin decomposition temperature under the high temperature conditions and high temperature lower residence time, to effectively improve burning for bioxin
Rate is ruined, when most short residence time t is less than 3s, it is 3s to take its value.
QpIt is averaged operating mode flow for the furnace gas that spurts offline；The furnace gas that spurts offline in the present embodiment is averaged operating mode stream
Amount is 54.67m3/s；
K is that gas ash solid and gas is detained ratio, i.e., the solid material measured in the offline stove that spurts of simulation using tracer material is average
The ratio of residence time and furnace gas mean residence time.Gas ash solid and gas is detained than being 3.40 in the present embodiment.
In the present embodiment, the offline furnace gas that spurts is averaged operating mode flow QpFor：
In formula：QbFor the furnace gas mark condition flow that spurts offline；Spurt furnace gas mark condition flow offline in the present embodiment
For 12.27Nm3/s；
T is offline furnace gas mean temperature of spurting；Gas mean temperature is 890 DEG C in the present embodiment；
PdFor local atmospheric pressure；Local atmospheric pressure is 97855Pa in the present embodiment；
PlFor the furnace gas average pressure that spurts offline.The furnace gas average pressure that spurts offline in the present embodiment be-
970Pa；
In the present embodiment, the offline furnace gas mark condition flow Q that spurtsbFor：
Qb=Qy+Qx+Qs=1.65+1.11+9.51=12.27Nm3/s
In formula：QyThe exhaust gas volumn generated for coal dust firing；1.65Nm3/ s, wherein Nm3/ s is status of criterion flux unit；
QxFor the stove inleakage that spurts offline；1.11Nm3/s；Wherein Nm3/ s is status of criterion flux unit；
QsFor the hot wind excess gas amount 9.51Nm extracted from kiln head cover or tertiary-air pipe3/s；Wherein Nm3/ s is standard shape
Condition flux unit；.
It is highly preferred that when its garbage flying ash treating capacity 50t/d (ton day), into the hot blast temperature for the stove that spurts offline
750-890 DEG C, the flow 16000-37000Nm of hot wind3/h；The coal amount 0.25-0.6t/h sprayed by coal dust supplementary device；Institute
State the air quantity 19500-44000Nm that comes out of the stove of the offline stove that spurts3/h；It comes out of the stove 870-950 DEG C of the temperature of wind；Garbage flying ash is in stove
Residence time is more than or equal to 3.0s；The efficiency 90-96% of the separator；The flying dust Zhong bioxin rate of destroying by fire is more than or equal to
99%.
As its garbage flying ash treating capacity 100t/d, into 750-890 DEG C of the hot blast temperature for the stove that spurts offline, the stream of hot wind
Measure 22000-53000Nm3/h；The coal amount 0.45-1.25t/h sprayed by coal dust supplementary device；The offline stove that spurts goes out
Stove air quantity 28000-62000Nm3/h；It comes out of the stove 870-950 DEG C of the temperature of wind；Residence time of the garbage flying ash in stove be more than etc.
In 3.0s；The efficiency 90-96% of the separator；Flying dust Zhong bioxin destroys rate by fire and is more than or equal to 99%.
As its garbage flying ash treating capacity 100t/d, into 780-910 DEG C of the hot blast temperature for the stove that spurts offline, the stream of hot wind
Measure 22000-53000Nm3/h；The coal amount 0.4-1.15t/h sprayed by coal dust supplementary device；The offline stove that spurts is come out of the stove
Air quantity 28000-58000Nm3/h；It comes out of the stove 870-950 DEG C of the temperature of wind；Residence time of the garbage flying ash in stove be more than or equal to
3.0s；The efficiency 90-96% of the separator；Flying dust Zhong bioxin destroys rate by fire and is more than or equal to 99%.
As its garbage flying ash treating capacity 200t/d, into 780-910 DEG C of the hot blast temperature for the stove that spurts offline, the stream of hot wind
Measure 27000-74000Nm3/h；The coal amount 0.7-2.05t/h sprayed by coal dust supplementary device；The offline stove that spurts is come out of the stove
Air quantity 34000-80000Nm3/h；It comes out of the stove 870-950 DEG C of the temperature of wind；Residence time of the garbage flying ash in stove be more than or equal to
3.0s；The efficiency 90-96% of the separator；Flying dust Zhong bioxin destroys rate by fire and is more than or equal to 99%.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (6)
1. it is a kind of by garbage flying ash disposition be cement raw material device, which is characterized in that including cement kiln, offline spurt stove, fly
Grey conveying device and separator；
The fly ash carry device, for garbage flying ash to be delivered to the offline stove that spurts；
The offline stove that spurts is handled garbage flying ash by the hot wind drawn from the cement kiln, will be in garbage flying ash
Fly ash granule detached He bioxin；
The separator by comprising fly ash granule He the air of bioxin is separated into fly ash granule and comprising the air of bioxin, and
Fly ash granule is exported from the ash releasing tube of the separator, by the air comprising bioxin from the exhaust duct of the separator
It exports to the cement kiln；
The cement kiln carries out high temperature incineration to the air Zhong bioxin comprising bioxin；
Wherein, the fly ash carry device includes flying dust transmitting device and flying dust metering device；The flying dust transmitting device includes
Pneumatic conveyer and/or mechanical transmission device；The flying dust metering device includes flying dust storehouse and metering delivering balance；The strength
The discharge end of conveying device and mechanical transmission device is connected to the flying dust storehouse；It is provided with lock at the ash hole in the flying dust storehouse
Door, the gate can be closed or opened the ash hole in the flying dust storehouse, and the ash hole in the flying dust storehouse is located at the metering
The surface of delivering balance；
The Pneumatic conveyer includes Pneumatic conveying pump, and the mechanical transmission device includes bucket elevator；
The air inlet of the offline stove that spurts is connected to the kiln head cover or tertiary-air pipe of the cement kiln by blast pipe；
The air outlet of the offline stove that spurts is connected to by discharge pipe with separator, will contain fly ash granule He the gas of bioxin
Be delivered to separator, the separator carry out material qi leel from；Treated, and fly ash granule is drawn off by separator bottom, through cooling
Admixture as production building material product afterwards；The air outlet of the separator is connected to the dore furnace of the cement kiln, by it
The dore furnace that low cloud of dust pneumatic transmission of the discharge rich in bioxin enters cement kiln burns, and Shi bioxin thoroughly decomposes.
2. it is a kind of by the method that garbage flying ash disposition is cement raw material, garbage flying ash is disposed using described in claim 1
For the device of cement raw material, which is characterized in that include the following steps：
S10, garbage flying ash is delivered to flying dust metering device by flying dust transmitting device；
S20, after measuring garbage flying ash by the flying dust metering device, it is delivered to the offline stove that spurts；
S30, the offline stove that spurts extract hot wind to the offline stove that spurts from the kiln head cover or tertiary-air pipe of cement kiln；
S40, garbage flying ash after fluidization, come into full contact with heat exchange with the hot wind, make in garbage flying ash in the offline stove that spurts
Bioxin is detached with fly ash granule, and bioxin is distributed in flue gas；
S50, the air delivery of Han bioxin and fly ash granule to separator is detached, fly ash granule is from the bottom of separator
It draws off, the low cloud of dust pneumatic transmission rich in bioxin is discharged in the admixture as production building material product, the separator after cooling
The dore furnace for entering cement kiln burns, and Shi bioxin thoroughly decomposes.
3. the method according to claim 2 disposed garbage flying ash as cement raw material, which is characterized in that the step
Further include step S35 between S30 and step S40；
S35, coal dust is supplied to the offline stove that spurts by coal dust supplementary device, to improve the offline temperature spurted in stove
Degree.
4. the method according to claim 3 disposed garbage flying ash as cement raw material, which is characterized in that garbage flying ash exists
The offline most short residence time t to spurt in stove is：
In formula：V is the dischargeable capacity of stove of spurting offline, and the horizontal position that the stove that spurts offline is entered from garbage flying ash calculates, until from
Line spurts the volume of outlet of still；
QpIt is averaged operating mode flow for the furnace gas that spurts offline；
K is that gas ash solid and gas is detained ratio.
5. the method according to claim 4 disposed garbage flying ash as cement raw material, which is characterized in that the offline spray
Furnace gas is risen to be averaged operating mode flow QpFor：
In formula：QbFor the furnace gas mark condition flow that spurts offline；
T is offline furnace gas mean temperature of spurting；
PdFor local atmospheric pressure；
PlFor the furnace gas average pressure that spurts offline.
6. the method according to claim 5 disposed garbage flying ash as cement raw material, which is characterized in that the offline spray
Rise furnace gas mark condition flow QbFor：
Qb=Qy+Qx+Qs
In formula：QyThe exhaust gas volumn generated for coal dust firing；
QxFor the stove inleakage that spurts offline；
QsFor the hot wind excess gas amount extracted from kiln head cover or tertiary-air pipe.
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| CN201610108231.3A CN105731840B (en) | 2016-02-26 | 2016-02-26 | By the device and method that garbage flying ash disposition is cement raw material |
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| CN106678831A (en) * | 2016-12-30 | 2017-05-17 | 安徽海螺川崎工程有限公司 | Cement kiln fly ash coprocessing system and processing process of cement kiln fly ash coprocessing system |
| CN111442651B (en) * | 2020-04-03 | 2022-03-25 | 北京四方联新技术开发有限公司 | Fly ash dioxin removing system and method based on cement kiln |
| CN112624639A (en) * | 2020-12-22 | 2021-04-09 | 临沂中联水泥有限公司 | Method for producing cement by treating dangerous waste through kiln head burner |
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