CN208859613U - Suspension combined type incinerator - Google Patents
Suspension combined type incinerator Download PDFInfo
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- CN208859613U CN208859613U CN201821361163.2U CN201821361163U CN208859613U CN 208859613 U CN208859613 U CN 208859613U CN 201821361163 U CN201821361163 U CN 201821361163U CN 208859613 U CN208859613 U CN 208859613U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
Suspension combined type incinerator is mainly made of eddy flow portion, boiling portion and cyclone separator；Eddy flow portion includes upper and lower part horn mouth, spin chamber, and spin chamber is equipped with tangential air inlet mechanism comprising the air inlet pipeline of first air inlet tangentially-arranged with spin chamber, the first air inlet is equipped with first charging aperture；Boiling portion includes the boiling-house, fluidized bed, aeration tank set gradually from top to bottom, fluidized bed includes dispersion plate and fluidizing agent layer, aeration tank bottom sets the first slag notch, and the second slag notch is set on dispersion plate, and the first, second slag notch is connected by Y-shaped clinker overflow pipe；Eddy flow portion is connected to cyclone separator by the first air outlet；It is connected at the top of eddy flow portion bottom and boiling portion；Second discharge port of cyclone separator is connected to boiling-house by feeder pipe.The utility model simple structure is unique, and low cost passes through two segments combined whirlwind, oxygen-enriched burning process, it can be ensured that the completely burned of the useless carbon electrode of graphitization in aluminium cell slag from delining.
Description
Technical field
The utility model relates to a kind of suspension combined type incinerators, more particularly to one kind to be suitable for aluminium cell slag from delining height
The suspension combined type incinerator that temperature is burned, belongs to solid waste recycling equipment technical field.
Background technique
Aluminium cell slag from delining is the solid waste that aluminium cell is periodically discharged, the institute removed when being to electrolytic cell overhaul
There is the general designation of waste and old inner lining material and carbonaceous electrode material.Wherein, carbonaceous material includes waste cathode carbon block and anode carbon granule；It gives up resistance to
Fiery thermal insulation material includes the combined mixture such as refractory brick, insulating brick, Impervious Materials and thermal insulation board.One during aluminium cell overhaul
As electrolytic cell do not discarded into flame-proof thermal insulation material and carbonaceous material etc. separately store, but useless carbonaceous electrode material and useless fire resisting are protected
The mixture of adiabator.It must carry out large repairs within aluminium cell every 3~5 years, it is left will to generate 25kg for every 1 ton of electrolytic aluminium of production according to statistics
Right aluminium cell slag from delining.Currently, China's accumulation stockpiling aluminium cell slag from delining is more than 7,000,000 tons, while increasing aluminium electricity year newly
Groove overhaul slag is solved about more than 1,000,000 tons.
Aluminium cell slag from delining is beige solid cake mass, and bulk granularity is 30~40cm, and easy fragmentation is difficult to grind
Carefully, there is certain viscosity and be varied with the length of its service life.Aluminium cell slag from delining chemical composition be C,
Na3AlF6、 NaF、A1203、Si02Material account for 90% or more and a small amount of other impurities.It is found, is given up by X- diffraction analysis
The object phase composition of Pot Lining is more complex, visible more fluoride in XRD spectrum.Fluoride in aluminium cell slag from delining with NaF,
Na3AIF6And AlF3Form exists, and mostlys come from infiltration and erosion of the electrolyte to cathode inner lining.Furthermore in waste tank lining also
Contain more graphite and β-NaAl11Ol7,β-NaAl11Ol7The production generated for flame-proof thermal insulation material and the electrolysis qualitative response penetrated into
Object, slow graphitization of the graphite from carbonaceous material under electrolysis temperature.Due to each electrolytic aluminium factory current capacity, liner knot
Structure, inner lining material type, Electrolytic conditions, operating duty, groove life difference are larger.The concrete composition thousand of each waste lining is poor
Ten thousand are not, and content of fluoride therein also has difference certainly.Studies have shown that in the waste lining removed, generally based on carbonaceous material,
Account for about 50% or so, furthermore contains ice crystal, sodium fluoride, nepheline, mono- aluminium oxide of β, a small amount of α-aluminium oxide, aluminium carbide, nitridation
Aluminium, alfer and micro cyanide (about 0.2%), mean calorie are greater than 8000kJ/kg.
Fluoride in aluminium cell slag from delining is with NaF, AlF3And Na3AlF6Presence, meet water hydrolysis generate F-, and release
Severe toxicity HF is released, harmfulness is very big.Cyanide in slag from delining is with NaCN and Na (FeCN6) exist, meet the CN that water dissolution generates-,
Also hypertoxic HCN can be released.Especially HCN can cause on a small quantity people poisoning and in seconds death, have skin abrasion wound into
Enter blood or can make one to be poisoned into respiratory tract.Leachate fluorine content is up to 2800mg/L, CN in aluminium cell slag from delining-
Content is up to 10~40mg/L (note: F-And CN-Content because of groove profile, service life, cell lining structure, operating procedure not
It is same and different), substantially exceed national " one leaching characteristic identification of hazardous waste judging standard " standard.Meanwhile in slag from delining
Metallic aluminium, AlN, Al2C3Equal hydrolysis may also generate NH3、H2、CH4Gas, these gases may cause burning and explosion thing
Therefore.If carried out harmless treatment not in time, the harm to environment will be serious and long-term.Due to its fluorine containing noxious material
Compound and Cyanide Leaching risk are defined as dangerous solid waste (classification: HW48) in " National Hazard waste register ", are
Country prohibites the I class waste arbitrarily abandoned.
There is presently no heavy industrialization application, Shao Shuoqi to the harmless treatment of aluminium cell slag from delining for aluminium electrolysis enterprise
Industry carried out some small-scale tests, and wherein floatation restores the utilities such as carbon and HF, ice crystal and has by burning disposal
The experiment of the methods of evil substance achieves certain success, but since aluminium cell slag from delining is difficult to grinding and fluoride, cyaniding
The characteristics such as object is readily volatilized are difficult to control in disposition, in the large amount of sewage newly increased containing harmful substances such as fluorine ions, make
At the risk of secondary pollution, it is unable to reach innoxious, minimizing, ultimateization disposition target.And disposition investment is big, disposing capacity
It is small, processing cost is high, less economical, project sustainability is bad.
Aluminium electrolysis enterprise to the harmless treatment of aluminium cell slag from delining there are no heavy industrialization application, a small number of enterprises into
It went some small-scale tests, and wherein the floatation reduction utilities such as carbon and HF, ice crystal and passed through burning disposal nuisance
The experiment of the methods of matter achieves certain success, but since aluminium cell slag from delining is difficult to grinding and fluoride, cyanide appearance
The characteristics such as volatile are difficult to control in disposition, and the harmful substances such as fluorine ion are contained in the large amount of sewage newly increased, cause two
The risk of secondary pollution is unable to reach harmlessness disposing target.And disposition investment is big, disposing capacity is small, processing cost is high, and it is economical
Property is poor, and project sustainability is bad.
Currently, for house refuse, garbage flying ash, various sludge, waste plastics, spent resin, scrap rubber, human and animal excreta, doctor
There is environment containing danger wastes tight in the organic solid castoff with certain energy including the industrial and agricultural wastes such as treatment rubbish
The harm of weight can make the thorough decomposition combustion of organic matter therein using the method that high temperature pyrolysis burns, eliminate toxicity, obtain it
Energy, residue is less after burning out, and the chemical property of residue is stablized, and can be used as construction material use and organic waste
Gurry is innoxious, disposal of resources optimal path.At present solid waste roasting, pyrolysis plant type it is also very much, have fixed bed,
Rotary kiln, fluidized bed, double tower circulation etc. various types pyrolysis oven, but all exist treatment effeciency it is not high, disposition not exclusively, energy
The problems such as consumption is high, cost is expensive, burn it is insufficient will generate a large amount of carbon dioxide, cause secondary pollution, and due to
Aluminium cell slag from delining during high temperature incineration is pyrolyzed can product corrosive substance, therefore to material is corrosion-resistant and high temperature resistant
Performance requirement is also higher, it is difficult to the problems such as meeting long-term safety operating.
The present invention is quasi- to provide a kind of suspension combined type incinerator that pyrolysis processing is burned suitable for aluminium cell slag from delining.
CN207019075U discloses a kind of circulating fluid bed garbage furnace, including incinerator, in the smoke outlet of incinerator
It is connected with cyclone separator, Boiling Combustion room is equipped in the lower part of incinerator burner hearth, is connected with and send below Boiling Combustion room
Air hose, the connection of Boiling Combustion room, smoke outlet and the cloth bag cooling cleaner connection of the dust-exhausting port and incinerator of cyclone separator,
It is equipped with rubbish feeding inlet and Secondary Air on the burner hearth of incinerator, suspension fired system is equipped on the burner hearth of incinerator, is passed through
Suspension fired system realizes the compound combustion of fluidized bed combustion and suspension combustion, and the fluid boiling into furnace material is made to burn.Although this
Kind fluid-bed combustion furnace can make material burn under fluidized state, but the time of still material stop or limited, contact
Insufficient, efficiency of combustion has also suffered from limitation.
Utility model content
It is suitable for aluminium cell slag from delining the technical problem to be solved by the present invention is to provide one kind and burns pyrolysis processing
Suspension combined type incinerator.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme:
A kind of suspension combined type incinerator is provided, the suspension combined type incinerator is mainly by eddy flow portion, boiling portion and rotation
Wind separator group at；
Eddy flow portion includes top horn mouth, spin chamber, lower part horn mouth, and the bell-mouthed top in top is equipped with the first outlet air
Mouthful, spin chamber is equipped with tangential air inlet mechanism, and tangential air inlet mechanism includes first air inlet tangentially-arranged with spin chamber, first into
The air inlet pipeline in air port is equipped with first charging aperture；
Cyclone separator includes separator body, and the top of separator body is equipped with the second air outlet, and bottom is equipped with second
Discharge port；
Boiling portion includes the boiling-house, fluidized bed, aeration tank set gradually from top to bottom, and the fluidized bed includes air point
The bottom of fabric swatch and the fluidizing agent layer being arranged on dispersion plate, the aeration tank is equipped with the first slag notch, the air
Distribution grid is equipped with the second slag notch, and first slag notch is connect with the second slag notch by a Y-shaped clinker overflow pipe；Institute
The side for stating aeration tank is additionally provided with combustion air inlet, and the top of the boiling-house is exhanst gas outlet；
Eddy flow portion is connected to the first air outlet of cyclone separator by air hose；The bell-mouthed bottom in eddy flow subordinate portion and boiling
Exhanst gas outlet connection at the top of portion；Second discharge port of cyclone separator is connected in boiling-house by feeder pipe.
When work, first air inlet in eddy flow portion is used to input the high temperature gas flow into spin chamber, i.e. circulating flue gas；First
Air outlet rises flue gas to cyclone separator for being discharged；First charging aperture is for inputting smashed slag from delining powder；
Second air outlet of cyclone separator is for being discharged the flue gas after cyclonic separation dedusting；Second discharge port is used for cigarette
Dust after gas separation, which is discharged, is delivered in boiling-house high temperature incineration again by feeder pipe.
Further,
The Y-shaped clinker overflow pipe, the third branch pipe of the first branch pipe, the second branch pipe and lower part including top, the
One branch pipe is connect with the first slag notch, and the second branch pipe passes through aeration tank and protruded into boiling-house by the second slag notch.
When work, first slag notch in boiling portion falls into inflation from dispersion plate gap for being discharged after slag from delining burning
Lime-ash in case；Second slag notch is for being discharged the lime-ash that slag from delining is fallen in after boiling-house completely burned on dispersion plate；
Lime-ash imports the third branch pipe discharge of lower part by first, second branch pipe on Y-shaped clinker overflow pipe top.
Further,
The dispersion plate is the plate for being evenly arranged several mesh.
Further,
The fluidizing agent layer with a thickness of 10~50cm；The fluidizing agent is the lime stone rubble of 3~8mm.
Further,
The spin chamber is cylindrical structure, and draw ratio is 3~10.
Further,
The top horn mouth is back taper hopper construction, and angle of taper is 45 °~75 °.
Further,
The lower part horn mouth is positive broach hopper structure, and angle of taper is 45 °~75 °.
Further,
The boiling-house is the cylindrical structure that top is equipped with back taper exhanst gas outlet, and draw ratio is 3~10.
Further,
It leaks out in order to prevent, the feeder pipe is equipped with high temperature weighted valve.
Further,
The eddy flow portion, boiling portion casing include steel chassis ontology, the adiabator layer that is covered on casing ontology
With the fire brick layer being covered on adiabator layer.When specifically manufacturing, i.e., patch plus thermal insulation material on steel chassis ontology
It builds refractory material again afterwards, and refractory material may be selected according to substance performance in kiln.
Preferably,
The suspension combined type incinerator further includes inspection platform, stair and fixed bracket, will be suspended by fixed bracket
Combined type incinerator is fixed on building.
Further,
The outer wall of the spin chamber is equipped with the first observation door；The outer wall of the boiling-house is equipped with the second observation door, institute
State the first observation door, the second observation door is respectively used to observation spin chamber, the indoor working condition of boiling.
Further,
The second observation door is also used to launch fuel, guarantees full combustion；And for launching fluidizing agent and setting
Igniter.
Further,
The igniter is manual igniting device or automatic ignition system.
Preferably,
Several maintenance doors, pressure instrumentation mounting hole, temperature inspection is set as needed in the suspension combined type incinerator
Survey instrument mounting hole.
Further,
Bottom combustion air inlet is connect with industrial oxygen-enriched generator, is supplied by industrial oxygen-enriched generator gas to boiling portion
Oxygen-enriched air is answered, oxygen content reaches 25~30% in the air to guarantee to enter boiling portion, guarantees full combustion.
Further,
First air inlet is connect with external high temperature blower, is introduced high temperature gas flow in spin chamber by high-temperature blower；From whirlwind
The circulating flue gas or introducing cement kiln tail smoke-box of the second air outlet discharge at the top of separator are further burnt.
Further,
The Y-shaped clinker overflow pipe is connect by pipeline with external clinker dealkalize system, and clinker dealkalize system is passed through
It converts the clinker of discharge to containing CaF by alkali liquid washing and CaO2Fluorite ore agent, and obtain NaOH (caustic soda) by-product
Product.
The burning process of above-mentioned suspension combined type incinerator is specific as follows:
First charging aperture of the slag from delining powder in the middle part of suspension combined type incinerator accompanies what the first air inlet tangentially entered
High temperature gas flow (circulating flue gas) is sent to together in the spin chamber in eddy flow portion, and the little particle powder in slag from delining powder is with eddy flow
The air-flow that indoor rotation rises enters cyclone separator by the first air outlet at the top of eddy flow portion, after cyclone separator separates
Powder be discharged through the second discharge port of its bottom and along feeder pipe enter boiling Indoor Combustion；High-temperature flue gas after separation is from rotation
The second air outlet at the top of wind separator is aspirated by high-temperature blower and is discharged, a portion again from the first air inlet tangentially into
Enter in spin chamber, realization recycles；And it is got rid of under the centrifugal force effect of bulky grain powder swirling eddy in rotating room therein
It is slid downwards to edge along the inner wall of spin chamber, the lower part horn mouth in eddy flow portion sweeps along part to return in the ascending air of necking
Into spin chamber, partially falls in boiling-house and burn；Return to the indoor powder of eddy flow part under the action of swirling eddy again
Separate into cyclone separator with high temperature gas flow (circulating flue gas) and boiling-house burning is entered by feeder pipe or directly from rotation
Flow chamber falls into boiling Indoor Combustion, so recycles, until slag from delining powder full combustion；Due to entering the indoor slag from delining that boils
Powder is evenly distributed in it on fluidizing agent under the action of air-flow, combustion air from combustion air inlet through aeration tank from
The dispersion plate of fluidized bed is blown into, and is entered in furnace by the gap between fluidizing agent, and slag from delining powder is made to form boiling-like
State, which is suspended in air-flow, completes burning, and burned ashes are discharged by Y-shaped clinker overflow pipe, as dregs of incinerator.
In above-mentioned burning process, the indoor air-flow of eddy flow is by the circulating flue gas that enters along a tangential direction from the first air inlet
It (high temperature gas flow) and is made of the flue gas that boiling portion high temperature incineration slag from delining powder is discharged；Since the air-flow that tangent line enters can will revolve
It flows indoor air-flow traffic direction and changes into rotation ascending fashion, so as to extend air-flow runing time, also increase material
With the time of gas heat exchange, the slag from delining powder in swirling eddy is made effectively to be spread and be fully warmed-up, guarantees it sufficiently
Burning.To prevent from leaking out, high temperature weighted valve is set in the middle part of feeder pipe；
Further,
The utility model has the beneficial effects that
1, the present invention is difficult to burn and contain toxic fluoride and cyanide for graphitized charcoal in aluminium cell slag from delining
The characteristics of design, the suspension combined type incinerator designed through the invention to electrolytic aluminium slag from delining carry out high temperature incineration, slag from delining
Fine particle high degree of dispersion is suspended in high temperature gas phase, by providing oxygen-enriched atmosphere, is extended the modes such as residence time, is made slag from delining
In carbonaceous material be able to full combustion, the heat after burning by flue gas exclusion can carry out waste heat recycling or as clinker
The energy needed for handling.During the burning process, cyanide (NaCN) is oxidized in the case where high temperature is aerobic and alkaline condition and disappears in slag from delining
Except toxicity, a small amount of HF gas evaporation into flue gas can by external alkaline matter and solidify, elimination toxicity, such as with
CaO in cement kiln is solidified into stable CaF2Solid, to eliminate toxicity.Metallic aluminium, AlN, Al in slag from delining2C3Deng
Solid Al is oxidized under high temperature2O3With gas N2、CO2.Resulting clinker can be converted by alkali liquid washing and CaO after burning
To contain CaF2Fluorite ore agent, and NaOH (caustic soda) byproduct is obtained, to realize harmless treatment aluminium cell overhaul
Slag completely eliminates secondary pollution risk, environmental-friendly, safety in production.
2, suspension combined type incinerator provided by the invention, can according to need setting residence time of material, can pass through
Heat addition oxygen-enriched air, meets the high temperature and oxygen-enriched combusting condition needed for it, to realize that complete oxidation burns.It can incite somebody to action simultaneously
Suspension combined type incinerator burns the surplus heat generated and is recycled by external waste heat reclaimer, and reduction can consume
It loses.
3, suspension combined type incinerator provided by the invention, simple in equipment is unique, easy to operate, low cost, and
Pass through the Particular crafts such as two segments combined cyclone firing, oxygen-enriched combusting, it can be ensured that the graphitization in aluminium cell slag from delining is useless
The completely burned of carbon electrode.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model suspension combined type incinerator；
Fig. 2 cuts open for the tangential air inlet mechanism in the utility model eddy flow portion to structural schematic diagram；
Fig. 3 is the structural scheme of mechanism of dispersion plate；
Fig. 4 is casing structure schematic diagram；
Fig. 5 is Y-shaped clinker overflow pipe attachment structure schematic diagram；
Above-mentioned appended drawing reference:
01, steel shell body；02, adiabator layer；03, refractory material layer；
11, spin chamber；12, top horn mouth；13, lower part horn mouth；14, the first air outlet；15, the first air inlet；
16, first charging aperture；17, the first observation door；
21, cyclone separator ontology；22, the second discharge port；23, the second air outlet；24, high temperature weighted valve；25, blanking
Pipe；
31, boiling-house；32, exhanst gas outlet；33, dispersion plate；34, combustion air inlet；35, Y-shaped clinker overflow
Pipe；36, the second observation door；37, aeration tank；38, the first slag notch；331, the second slag notch；351, the first branch pipe；352, second
Branch pipe；353, third branch pipe；4, fixed bracket.
Specific embodiment
Utility model is further illustrated below with reference to examples and drawings, but is not limited to the model of the utility model
It encloses.
As shown in Figs. 1-5, the present embodiment provides a kind of suspension combined type incinerator, the suspension combined type incinerator is main
It is made of eddy flow portion, boiling portion and cyclone separator；
Eddy flow portion includes top horn mouth 12, spin chamber 11, lower part horn mouth 13, and the top of top horn mouth 12 is equipped with the
One air outlet 14, spin chamber 11 are equipped with tangential air inlet mechanism, and tangential air inlet mechanism includes tangentially-arranged with spin chamber 11 first
The air inlet pipeline of air inlet 15, the first air inlet 15 is equipped with first charging aperture 16；
Cyclone separator includes separator body 21, and the top of separator body 21 is equipped with 23 bottom of the second air outlet and is equipped with
Second discharge port 22；
Boiling portion includes the boiling-house 31, fluidized bed, aeration tank 37 set gradually from top to bottom, and the fluidized bed includes sky
Gas distribution grid 33 and the fluidizing agent layer being arranged on dispersion plate 33, in the present embodiment, the thickness control of fluidizing agent layer
In 10~50cm；Fluidizing agent uses partial size for the lime stone rubble of 3~5mm.
The bottom of aeration tank 37 is equipped with the first slag notch 38, and dispersion plate 33 is equipped with the second slag notch 331, and first goes out
Cinder notch 38 is connect with the second slag notch 331 by a Y-shaped clinker overflow pipe 35；The side of aeration tank 37 is additionally provided with combustion air
Entrance 34, the top of boiling-house 31 are exhanst gas outlet 32；
Eddy flow portion is connected to cyclone separator by the first air outlet 14；The bottom of the lower part horn mouth 13 in eddy flow portion and boiling
The exhanst gas outlet 32 at the top of portion is risen to be connected to；Second discharge port 22 of cyclone separator is connected to boiling-house 31 by feeder pipe 25
It is interior；Feeder pipe 25 is equipped with high temperature weighted valve 24.
When work, first air inlet 15 in eddy flow portion is used to input the high temperature gas flow into spin chamber 11, i.e. circulating flue gas；
First air outlet 14 rises flue gas to cyclone separator for being discharged；First charging aperture 16 is for inputting smashed overhaul ground-slag
Material；
Second air outlet 23 of cyclone separator is for being discharged the flue gas after cyclonic separation dedusting；Second discharge port 22 is used for
Dust discharge after flue gas is separated is delivered in boiling-house 31 high temperature incineration again by feeder pipe 25.
As shown in figure 5, in the present embodiment, Y-shaped clinker overflow pipe 35, the first branch pipe 351, the second branch pipe including top
352 and lower part third branch pipe 353, the first branch pipe 351 connect with the first slag notch 38, and the second branch pipe 352 passes through aeration tank
It 37 and is protruded into boiling-house 31 by the second slag notch 331.
When work, first slag notch 38 in boiling portion after slag from delining burning is discharged from 33 gap of dispersion plate for falling into
Lime-ash in aeration tank 37；Second slag notch 331 falls in air distribution for slag from delining to be discharged after 31 completely burned of boiling-house
Lime-ash on plate 33；Lime-ash imports lower part by the first branch pipe 351, second branch pipe 352 on 35 top of Y-shaped clinker overflow pipe
Third branch pipe 353 be discharged.
In the present embodiment, dispersion plate 235 is the circular plate for being evenly arranged several mesh.
Spin chamber 11 in the present embodiment uses draw ratio to grow for 5 cylindrical structure as other preferred embodiments
Diameter ratio can control according to actual needs 3~10.
Top horn mouth 12 is back taper hopper construction, and angle of taper is 60 °, as other preferred embodiments, cone
Shape angle can be controlled according to actual needs at 45 °~75 °.
Lower part horn mouth 13 is positive broach hopper structure, and angle of taper is 60 °, as other preferred embodiments, cone
Shape angle can be controlled according to actual needs at 45 °~75 °.
Boiling-house 31 is the cylindrical structure that top is equipped with that the draw ratio of back taper exhanst gas outlet 32 is 5, excellent as other
Embodiment is selected, draw ratio can control according to actual needs 3~10.
Eddy flow portion, boiling portion casing include steel chassis ontology 01, the adiabator layer that is covered on casing ontology 01
02 and the fire brick layer 03 that is covered on adiabator layer 02.When specifically manufacturing, i.e., patch plus guarantor on steel chassis ontology
Refractory material is built after adiabator again, and refractory material may be selected according to substance performance in kiln.
Suspension combined type incinerator in the present embodiment is additionally provided with fixed bracket 4, will be suspended combined type by fixed bracket 4
Incinerator is fixed on building.
The outer wall of spin chamber 11 is equipped with the first observation door 17；The outer wall of boiling-house 31 is equipped with the second observation door 36, the
One observation door 17, second observes door 36 and is respectively used to observation spin chamber 11, the working condition in boiling-house 31；Second observation door 36
It can be used for launching fuel, guarantee full combustion；And for igniter to be arranged, the igniter is manual igniting device
Or automatic ignition system, manual firing is used in the present embodiment.
When work, bottom combustion air inlet 34 is connect with industrial oxygen-enriched generator, passes through industrial oxygen-enriched generator gas
Boiling portion oxygen-enriched air is given, oxygen content reaches 25~30% in the air to guarantee to enter boiling portion, guarantees full combustion.
First air inlet 15 is connect with external high temperature blower, is introduced high temperature gas flow in spin chamber 11 by high-temperature blower；From cyclonic separation
The circulating flue gas or introducing cement kiln tail smoke-box of the second air outlet 23 discharge at the top of device are further burnt.Boiling portion
Y-shaped clinker overflow pipe 35 by pipeline with outside clinker dealkalize system connect, clinker is led to by clinker dealkalize system
It crosses alkali liquid washing and CaO is converted into containing CaF2Fluorite ore agent, and obtain NaOH (caustic soda) byproduct.
The burning process of above-mentioned suspension combined type incinerator is specific as follows:
First charging aperture 16 of the slag from delining powder in the middle part of suspension combined type incinerator accompany the first air inlet 15 tangentially into
The high temperature gas flow (circulating flue gas) entered is sent to together in the spin chamber 11 in eddy flow portion, the little particle powder in slag from delining powder with
The air-flow that rotation rises in spin chamber 11 enters cyclone separator by first air outlet 15 at 11 top of eddy flow portion, through whirlwind
Powder after separator 22 separates enters 31 internal combustion of boiling-house along feeder pipe 25 through the second discharge port 22 discharge of its bottom
It burns；High-temperature flue gas after separation, which is aspirated from the second air outlet 23 at the top of cyclone separator by high-temperature blower, to be discharged, wherein one
Part tangentially enters in spin chamber 11 from the first air inlet 215, and realization recycles；And bulky grain powder therein is in rotating room
It is thrown to edge under the centrifugal force effect of swirling eddy in 11 to slide downwards along the inner wall of spin chamber 11, the lower part loudspeaker in eddy flow portion
Mouth 13 sweeps along part to return in spin chamber 11 in the ascending air of necking, partially falls in boiling-house 31 and burns；Return to eddy flow
Part is carried out with high temperature gas flow (circulating flue gas) into cyclone separator powder in room 11 under the action of swirling eddy again
Separation is entered the burning of boiling-house 31 or directly fallen into boiling-house 31 from spin chamber 11 by feeder pipe 25 burns, and so recycles,
Until slag from delining powder full combustion；Since the slag from delining powder entered in boiling-house 31 makes it equably under the action of air-flow
It is distributed on fluidizing agent, combustion air is blown through aeration tank 37 from the dispersion plate 33 of fluidized bed from combustion air inlet 34
Enter, and entered in furnace by the gap between fluidizing agent, so that slag from delining powder is formed fluidized state and be suspended in completion combustion in air-flow
It burns, burned ashes are discharged by Y-shaped clinker overflow pipe 35, as dregs of incinerator.
In above-mentioned burning process, air-flow in spin chamber 11 is by the circulation cigarette that enters along a tangential direction from the first air inlet 15
The flue gas composition of gas (high temperature gas flow) and the discharge of boiling portion high temperature incineration slag from delining powder；Since the air-flow that tangent line enters can will revolve
Air-flow traffic direction in flow chamber 11 changes into rotation ascending fashion, so as to extend air-flow runing time, also increases object
The time of material and gas heat exchange, so that the slag from delining powder in swirling eddy is effectively spread and is fully warmed-up, guarantee that it is filled
Divided combustion.
The present invention provides suspension combined type incinerator during carrying out high temperature incineration to electrolytic aluminium slag from delining, slag from delining
Fine particle meeting high degree of dispersion is suspended in high temperature gas phase, by providing oxygen-enriched atmosphere, is extended the modes such as residence time, is made overhaul
Carbonaceous material in slag is able to full combustion, and the heat after burning can carry out waste heat recycling or as furnace by flue gas exclusion
The energy needed for Slag treatment.During the burning process, cyanide (NaCN) is oxidized in the case where high temperature is aerobic and alkaline condition in slag from delining
Eliminate toxicity, a small amount of HF gas evaporation into flue gas can by external alkaline matter and solidify, elimination toxicity, such as
Stable CaF is solidified into the CaO in cement kiln2Solid, to eliminate toxicity.Metallic aluminium, AlN, Al in slag from delining2C3Deng
It is oxidized into solid Al at high temperature2O3With gas N2、CO2.Resulting clinker can be turned by alkali liquid washing and CaO after burning
It turns to containing CaF2Fluorite ore agent, and NaOH (caustic soda) byproduct is obtained, to realize that harmless treatment aluminium cell is big
Slag is repaired, secondary pollution risk is completely eliminated, environmental-friendly, safety in production.Suspension combined type incinerator provided by the invention, can be with
Residence time of material is set as needed, oxygen-enriched air can be added by heat, meet the high temperature and oxygen-enriched combusting needed for it, from
And it realizes complete oxidation and burns.Suspension combined type incinerator provided by the invention, simple in equipment are unique, easy to operate, make
Valence is low, and passes through the Particular crafts such as two segments combined cyclone firing, oxygen-enriched combusting, it can be ensured that in aluminium cell slag from delining
It is graphitized the completely burned of useless carbon electrode.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection scope is asked to be defined by appended claims and its equivalent.
Claims (10)
1. a kind of suspension combined type incinerator, which is characterized in that the suspension combined type incinerator is mainly by eddy flow portion, boiling portion
And cyclone separator composition；
Eddy flow portion includes top horn mouth, spin chamber, lower part horn mouth, and the bell-mouthed top in top is equipped with the first air outlet, rotation
Flow chamber is equipped with tangential air inlet mechanism, and tangential air inlet mechanism includes first air inlet tangentially-arranged with spin chamber, the first air inlet
Air inlet pipeline be equipped with first charging aperture；
Cyclone separator includes separator body, and the top of separator body is equipped with the second air outlet, and bottom is equipped with the second discharging
Mouthful；
Boiling portion includes the boiling-house, fluidized bed, aeration tank set gradually from top to bottom, and the fluidized bed includes dispersion plate
With the fluidizing agent layer being arranged on dispersion plate, the bottom of the aeration tank is equipped with the first slag notch, the air distribution
Plate is equipped with the second slag notch, and first slag notch is connect with the second slag notch by a Y-shaped clinker overflow pipe；It is described to fill
The side of gas tank is additionally provided with combustion air inlet, and the top of the boiling-house is exhanst gas outlet；
Eddy flow portion is connected to the first air outlet of cyclone separator by air hose；The bell-mouthed bottom in eddy flow subordinate portion and boiling portion are pushed up
The exhanst gas outlet in portion is connected to；Second discharge port of cyclone separator is connected in boiling-house by feeder pipe.
2. suspension combined type incinerator according to claim 1, which is characterized in that
The Y-shaped clinker overflow pipe, the third branch pipe of the first branch pipe, the second branch pipe and lower part including top, first
Pipe is connect with the first slag notch, and the second branch pipe passes through aeration tank and protruded into boiling-house by the second slag notch.
3. suspension combined type incinerator according to claim 1 or 2, which is characterized in that
The dispersion plate is the plate for being evenly arranged several mesh.
4. suspension combined type incinerator according to claim 1 or 2, which is characterized in that
The fluidizing agent layer with a thickness of 10~50cm；The fluidizing agent is the lime stone rubble of 3~8mm.
5. suspension combined type incinerator according to claim 1 or 2, which is characterized in that
The spin chamber is cylindrical structure, and draw ratio is 3~10.
6. suspension combined type incinerator according to claim 5, which is characterized in that the top horn mouth is back taper material
Bucket structure, angle of taper are 45 °~75 °.
7. suspension combined type incinerator according to claim 6, which is characterized in that the lower part horn mouth is positive conical material
Bucket structure, angle of taper are 45 °~75 °.
8. suspension combined type incinerator according to claim 7, which is characterized in that the boiling-house is that top is equipped with back taper
The cylindrical structure of shape exhanst gas outlet, draw ratio are 3~10.
9. suspension combined type incinerator according to claim 1 or 2, which is characterized in that
The eddy flow portion, boiling portion casing include steel chassis ontology, the adiabator layer being covered on casing ontology and cover
Cover the fire brick layer on adiabator layer.
10. suspension combined type incinerator according to claim 1 or 2, which is characterized in that
The outer wall of the spin chamber is equipped with the first observation door；The outer wall of the boiling-house is equipped with the second observation door；Second sees
Igniter is additionally provided at Cha Men.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361163.2U CN208859613U (en) | 2018-08-23 | 2018-08-23 | Suspension combined type incinerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361163.2U CN208859613U (en) | 2018-08-23 | 2018-08-23 | Suspension combined type incinerator |
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| CN208859613U true CN208859613U (en) | 2019-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282961A (en) * | 2020-03-02 | 2020-06-16 | 长沙中硅环保科技有限公司 | System and method for treating dust collection ash of iron and steel plant by mesh belt type suspension combined reduction furnace |
-
2018
- 2018-08-23 CN CN201821361163.2U patent/CN208859613U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282961A (en) * | 2020-03-02 | 2020-06-16 | 长沙中硅环保科技有限公司 | System and method for treating dust collection ash of iron and steel plant by mesh belt type suspension combined reduction furnace |
| CN111282961B (en) * | 2020-03-02 | 2024-01-02 | 长沙中硅环保科技有限公司 | System and method for disposing dust collection ash of steel plant by using mesh belt type suspension combined reduction furnace |
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Address after: 410075 D-244, No. 199 Lugu Road, Lugu Lu, high tech Zone, Changsha, Hunan Patentee after: Changsha Zhongsi Environmental Protection Technology Co., Ltd Address before: 410075 D-244, No. 199 Lugu Road, Lugu Lu, high tech Zone, Changsha, Hunan Patentee before: Changsha silicon cement technology development Co Ltd |