CN206580845U - A kind of utilization high-temperature slag handles the device of incineration of refuse flyash - Google Patents
A kind of utilization high-temperature slag handles the device of incineration of refuse flyash Download PDFInfo
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- CN206580845U CN206580845U CN201720152355.1U CN201720152355U CN206580845U CN 206580845 U CN206580845 U CN 206580845U CN 201720152355 U CN201720152355 U CN 201720152355U CN 206580845 U CN206580845 U CN 206580845U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The utility model provides the device that a kind of utilization high-temperature slag handles flying dust, including smelting furnace, the smelting furnace is provided with slag entrance, flying dust entrance, slag exit, and the smelting furnace includes side wall and the seal closure on side wall, and the side wall, seal closure enclose the chamber to form closing.The utility model utilizes the sensible heat melting and solidification city garbage burning flying ash of high-temperature slag, the maximization of steel plant's using energy source is realized, by city solid waste regenerated resources.
Description
Technical field
The utility model belongs to garbage flying ash recycling field, more particularly to a kind of to handle rubbish using high-temperature slag
The device of flying ash.
Background technology
In metal smelt field, high-temperature slag has higher temperature, for example, blast furnace red dregs.Blast furnace red dregs are blast furnace refinings
Gangue, production additive, fuel ash in one of byproduct of iron, iron ore grade through blast furnace smelting, in molten condition, from height
Fire grate goes out, and slag sluicing system is realized by skimming tool, blast furnace plant is discharged by the slag runner of refractory material laying, because of its red-hot hair
It is red, therefore also referred to as red slag, red 1400 DEG C~1500 DEG C of slag temperature, main component be calcium oxide, silica, aluminum oxide,
Magnesia etc..Current most blast furnace red dregs are through water quenching granulating as construction material recycling, and its high temperature sensible heat does not have
It is utilized effectively.
City garbage burning flying ash refers to collect obtained residue in the flue gas purification system of garbage burning factory, mainly
Composition is calcium oxide, silica, magnesia, aluminum oxide, and the toxic heavy metal and substantial amounts of two such as a small amount of Hg, Pb, Cd
Evil English class materials are a kind of while having the extra quality danger of Heavy Metal Pollution characteristic and the lasting organic toxic hazard characteristic of environment useless
Thing, has great harmfulness to health and ecological environment.Incineration of refuse flyash has been included at present《National Hazard waste
Register》, numbering is HW18.The domestic processing method at present to the usual use of incineration of refuse flyash has：1) security landfill method；2) it is solid
Change and stabilize, including cement solidification, bitumen solidification, melting and solidification, chemical agent solidification and stabilization etc.；3) by the huge sum of money in flying dust
Category is extracted, including acid is extracted, alkali carries take, biological and biological agent is extracted etc..Wherein, melting and solidification volume reduction rate height, slag property
Stable, glassy state slag can reach recycling as construction material, and high-temperature process can decompose the destruction overwhelming majority two
Evil English class organic pollutions, and, so as to realize stabilisation, but use high-temperature fusion work by most of heavy metals immobilization in solids
Skill needs to consume the substantial amounts of energy, it is also contemplated that the processing of waste gas after melting.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of using at high-temperature slag
The device of flying dust is managed, for solving the problems such as energy of incineration of refuse flyash processing is originated.
In order to achieve the above objects and other related objects, the utility model provides a kind of utilization high-temperature slag processing flying dust
Device, including smelting furnace, the smelting furnace are provided with slag entrance, flying dust entrance, slag exit, and the smelting furnace includes side wall and peace
Seal closure on side wall, the side wall, seal closure enclose the chamber to form closing.Seal closure can reduce smelting furnace heat damage
Lose, collect harmful volatile matter in smelting furnace tail gas and flying dust.
In some embodiments of the present utility model, barricade is provided with the chamber of the smelting furnace, the barricade is by smelting furnace
Chamber is divided into the baffling passage passed through for slag.
In some embodiments of the present utility model, the side wall includes shell, the inner lining of casing refractory material.Shell
Can be refractory brick etc. using the materials such as steel plate, refractory material.
In some embodiments of the present utility model, the slag entrance is connected to slag producer, for introducing high temperature
Slag, the slag exit discharge mixing slag is simultaneously sent to water-flushing-slag apparatus.
In some embodiments of the present utility model, the slag that the slag entrance is connected to for introducing high-temperature slag is sent out
Raw stove (13), the mixing slag of the slag exit outflow enters water-flushing-slag apparatus.
In some embodiments of the present utility model, the smelting furnace, which is provided with, is used for the discharge of deposit in discharge chamber
Hole.
In some embodiments of the present utility model, the heating dress heated to chamber interior is additionally provided with the smelting furnace
Put.
In some embodiments of the present utility model, in addition to for purifying the exhaust gas cleaner of flue gas in smelting furnace, institute
The chamber that exhaust gas cleaner is stated with the smelting furnace is connected, the dust that exhaust gas cleaner is used in purifying smoke, adsorbs it
In pollutant etc..
In some embodiments of the present utility model, in addition to by the flying dust entrance to smelting furnace add flying dust flying dust
Adding apparatus.
In some embodiments of the present utility model, the flying dust adding apparatus includes feeding chamber, feed pipe, batcher,
The batcher is sent into the flying dust in feeding chamber in smelting furnace by feed pipe, flying dust entrance.Flying dust, which is added, can also use gas
Power conveys method, and critical piece includes flying dust batch can, Fluidizer, delivery of carrier gas, conveyance conduit, shower nozzle etc., and Geldart-D particle can be realized
Long range continuous conveying.
Incineration of refuse flyash is the residue of the flue gas purification system of garbage burning factory, high-temperature slag from blast furnace red dregs,
One or more combinations in the metallurgical cinders such as mineral hot furnace slag, COREX melting furnace slags.
As described above, a kind of utilization high-temperature slag of the present utility model handles the device and method of flying dust, have with following
Beneficial effect：The utility model relies on ripe metallurgical technology, is flown using the sensible heat melting and solidification city garbage burning of high-temperature slag
Ash, realizes the maximization of steel plant's using energy source, by city solid waste regenerated resources.
Brief description of the drawings
Fig. 1 is shown as the apparatus structure signal of the utilization high-temperature slag processing incineration of refuse flyash of the utility model embodiment
Figure.
Fig. 2 is shown as the planar structure schematic diagram of smelting furnace in Fig. 1.
The apparatus structure that Fig. 3 is shown as handling incineration of refuse flyash using high-temperature slag in the utility model embodiment 1 shows
It is intended to.
Fig. 4 is shown as the annexation schematic diagram of smelting furnace and slag runner in the utility model embodiment 1.
Fig. 5 is shown as the A portions enlarged drawing in Fig. 4.
The apparatus structure that Fig. 6 is shown as handling incineration of refuse flyash using high-temperature slag in the utility model embodiment 2 shows
It is intended to.
Fig. 7 is shown as the annexation schematic diagram of smelting furnace and slag runner in the utility model embodiment 2.
Piece mark explanation
1-shell
2-side wall
3-seal closure
4-barricade
5-heater
6-flying dust adding apparatus
61-flying dust entrance
62-feeding chamber
63-feed pipe
64-batcher
7-slag entrance
8-slag exit
9-discharge orifice
10-exhaust gas cleaner
11-smelting furnace
12-water-flushing-slag apparatus
13-slag producer
14-sow
15-slag runner
Embodiment
Embodiment of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages of the present utility model and effect easily.
As Figure 1-Figure 2, a kind of utilization high-temperature slag handles the device of incineration of refuse flyash, including smelting furnace 11, smelting furnace
11 are provided with slag entrance 7, flying dust entrance 61, slag exit 8, and smelting furnace 11 includes side wall 2 and the sealing on side wall 2
Cover 3, side wall 2, seal closure 3 enclose the chamber to form closing, effectively reduce the thermal loss of slag.Smelting furnace 11 can be circular or
The shapes such as rectangle, the furnace bottom of smelting furnace 11 and the inner lining material of side wall 2 are formed using refractory material laying or cast.Seal closure
3 are covered in the top of side wall 2, for reducing radiating and collecting dust and waste gas.Preferably, slag entrance 7, flying dust entrance 61
The side of smelting furnace 11 is arranged on, slag exit 8 is arranged on the opposite side of smelting furnace 11 so that slag reaches with flying dust in smelting furnace 11
Maximum flow path, is sufficiently mixed, then discharged from slag exit 8.
Barricade 4 is provided with the chamber of smelting furnace 11, the chamber of smelting furnace 11 is divided into the baffling passage passed through for slag by barricade 4,
Baffling passage can be " ∽ " type, " N " type or the mixed type of the two etc., by the flow direction for changing slag so that flying dust
It is sufficiently mixed with slag, barricade 4 is formed using refractory material laying or cast.The set-up mode of barricade 4 is more, it is therefore an objective to realize
The abundant baffling of slag, makes flying dust be sufficiently mixed with slag, as shown in figure 1, setting multiple barricades 4, the two of barricade 4 in smelting furnace 11
Madial wall of the side with smelting furnace 11 is connected, and the bottom of partial retaining wall 4 and smelting furnace 11 has gap, another part barricade 4 and smelting furnace
11 bottom connection, preferably, be connected with the barricade 4 that the bottom of smelting furnace 11 has gap adjacent to the bottom with smelting furnace 11
Barricade 4 so that the slag in smelting furnace 11 is by abundant baffling, and this kind of barricade is " N " type barricade.As shown in Figure 3 and Figure 4, smelting furnace
Multiple barricades 4 are set, and the side of barricade 4 is connected with a side wall of smelting furnace 11, another relative with smelting furnace 11 of opposite side in 11
There is gap in side wall, the bottom of barricade 4 is closely connected with the bottom of smelting furnace 11, between two neighboring barricade 4 and smelting furnace 11 inwall
The gap of presence is in opposite side, and this kind of barricade is " ∽ " type barricade, from fig. 4, it can be seen that gap is staggered, Neng Goushi
The abundant baffling of existing slag.
The bottom of smelting furnace 11, which is provided with, is used for the discharge orifice 9 of deposit in discharge chamber, realizes the deposition to the bottom of smelting furnace 11
Thing is periodically discharged, and deposit is usually that can be set on mixture of metal deposit, metal and slag etc., discharge orifice 9
Throttling arrangement, is easy to control the outflow of slag.
Also include exhaust gas cleaner 10, exhaust gas cleaner 10 is connected with the chamber of smelting furnace 11, exhaust gas cleaner
10 are communicated to the top of seal closure 3 or sidepiece.Exhaust gas cleaner 10 can be corresponding according to the feature selecting of incineration of refuse flyash
Device, such as cloth envelop collector, the device that dioxins materials can be removed, exhaust gas cleaner 10 is by blower fan by smelting furnace
Gas in 11 is taken away and handled, and realizes the purification to gas.
The heater 5 heated to chamber interior is additionally provided with smelting furnace 11, its body is a burner, incendivity coal
The fuel heat supply such as gas, natural gas, coal dust, coke powder, or with electrode, electric arc heated etc., when slag heat is not enough, using heating
Device 5 is heated, and on the one hand promotes flying dust to melt, and prevents slag from consolidating, on the other hand, and high temperature can be formed in smelting furnace 11
Inert atmosphere (CO2), promote harmful substance to decompose volatilization, processing is taken away by exhaust gas cleaner 10.
Side wall 2 includes shell 1, and shell 1 is the materials such as steel plate, and the inner lining refractory of shell 1 is specifically as follows refractory brick
Deng playing heat-blocking action.
The slag that slag exit 8 flows out enters water-flushing-slag apparatus 12, specifically, and the slag flowed out from slag exit 8 passes through
Slag runner enters water-flushing-slag apparatus 12, and grain slag is made by water quenching granulating, realizes the solidification to flying dust.Generally, water-flushing-slag apparatus 12
The existing device of stove 13 occurs for slag, without extra construction, slag producer 13 is specifically as follows blast furnace or mineral hot furnace etc..
For the slag flowed out from slag exit 8, cooling granulation can also be carried out using methods such as natural cooling granulations.
The present apparatus also includes the flying dust adding apparatus 6 for adding flying dust to the chamber of smelting furnace 11 by flying dust entrance 61, specifically
Ground, flying dust adding apparatus 6 includes feeding chamber 62, feed pipe 63, batcher 64, and batcher 64 is by feed pipe 63 by feeding chamber 62
In flying dust from the flying dust entrance 61 of the top of smelting furnace 11 or side feeding smelting furnace 11.Feeding chamber 62, batcher 64 are envelope
Enclosed, is prevented effectively from outside flying dust and raises.Flying dust adding apparatus 6 is placed on the top or side of smelting furnace 11.
As it was previously stated, blast furnace is one of main production plant of ferrous metallurgical industry high-temperature slag, therefore, with blast furnace red dregs
Illustrate specific implementation method exemplified by processing incineration of refuse flyash.Temperature is generally 1400~1500 DEG C, red slag ratio during tap cinder
Thermal capacitance about 1.2kJ/ (kg* DEG C), typical composition is shown in Table 1.
The blast furnace red dregs typical composition table (weight %) of table 1
About 20 DEG C of temperature when city garbage burning flying ash adds smelting furnace, specific heat capacity about 1.2kJ/ (kg* DEG C), flying dust fusing point is about
1400 DEG C, composition is slightly changed when different, and city garbage burning flying ash typical composition is shown in Table 2.
The city garbage burning flying ash typical composition table (weight %) of table 2
Incineration of refuse flyash is handled using high-temperature slag, the relation of the addition speed of flying dust and red slag flow, temperature is as follows
Formula：
QAsh=[CSlag*QSlag*(tSlag-t0)]/[CAsh*(t0-tAsh)+qPhase]
In formula, QAsh--- flying dust addition kg/h；
CAsh--- flying dust specific heat capacity J/ (kg* DEG C)；
tAsh--- temperature when flying dust is added, DEG C；
QSlag--- red slag flow kg/h；
CSlag--- red slag ratio thermal capacitance J/ (kg* DEG C)；
tAsh--- temperature when red slag enters stove, DEG C；
to--- flying dust and temperature after the melting of red slag, DEG C；
qPhase--- flying dust melts the heat of transformation, J/kg.
From above formula, flying dust adds speed and red slag temperature, flow proportional, specific heat capacity, the temperature of red slag
And the flying dust heat of transformation etc. is typically metastable.Blast furnace is once slagged tap about 1-2 hours, is slagged tap 6-8 times daily, i.e., every
It is slagged tap about 8-12 hours time.Tap cinder amount is depended on using blast furnace red dregs processing incineration of refuse flyash efficiency and temperature of slagging tap
Degree.
Incineration of refuse flyash is warming up to 1400 DEG C of fusing point and starts to melt in about 20 DEG C of addition smelting furnaces of normal temperature after being mixed with red slag
Change, be continuously heating to be completely melt, flying dust heating fusion process needs cycle certain time.Heat transfer between flying dust and red slag
Journey is more complicated, when fly ash granule is larger, and flowing velocity difference is larger between flying dust and red slag, conducts heat based on heat convection, now
The principal element for influenceing flying dust heating fusing cycle t is convection transfer rate α and temperature difference Δ t.I.e.：
T=f (Δ t, α)
In formula, the temperature difference between Δ t --- flying dust and red slag, DEG C；
Convection transfer rate between α --- flying dust and red slag, W/ (m2*℃)。
Wherein, convection transfer rate is determined by Multiple factors.I.e.：
α=g (v, λ, Cp, ρ, μ, Δ t, L, Φ)
In formula：V --- red slag flow velocity, m/s；
λ --- thermal conductivity factor, W/ (m2*℃)；
Cp --- specific heat capacity, J/ (kg* DEG C)；
ρ --- density, kg/m3；
μ --- viscosity；
Δ t --- fluid and solid temperature are poor, DEG C；
L --- ash surface size, m；
The geometrical factor of Φ --- wall.
Therefore, the factor of influence flying dust fusing time is more, and fusing time and the actual conditions of theoretical calculation generally have one
Fixed deviation is more during practical application to be determined by testing.
Flying dust also has another situation, i.e. fly ash granule smaller after being mixed with red slag, and specific surface area is big, after being mixed with red slag
It is suspended in red slag, is flowed with red slag with same speed.Now, flying dust influences with the heat transfer of red slag based on thermal contact conductance
Factor is similar with heat convection situation, is mainly influenceed by temperature difference and thermal conductivity factor, here is omitted.
Flying dust is added after blast furnace red dregs, and the two composition is similar, and the composition transfer of red slag is calculated by conservation of matter principle.
In a word, according to the calculating of the composition of blast furnace red dregs and incineration of refuse flyash, analysis of physical and chemical property etc., red Slag treatment is utilized
The method of incineration of refuse flyash is feasible；Addition, treatment effeciency of flying dust etc. depend on the quantity of slag and tapping temperature.Flying dust with
Heating after the mixing of red slag, fusing time depend primarily on the physics and chemistry state of flying dust or red slag, generally pass through to test and determine.
Embodiment 1
The present embodiment handles the device of garbage flying ash as shown in Figure 3-Figure 5 using blast furnace red dregs.
Certain furnace volume about 4700m3, averagely produce about 9400 tons of the pig iron daily, red slag about 2630t, slag iron is red than 0.28t/t
Slag average discharge 240t/h, red 1470 DEG C of slag temperature during into slag runner, it is assumed that smelting furnace and slag runner heat waste 10%, blast furnace once taps a blast furnace
About 160 minutes (slag) time.Incineration of refuse flyash at the uniform velocity adds smelting furnace after skimming tool with normal temperature powder, with red slag in smelting furnace
Interior mixed melting, eventually enters into granulated slag groove and carries out water quenching granulating, the existing grain slag granulating device of the blast furnace.
Flying dust addition and slag tapping temperature and composition transfer are calculated according to above-mentioned condition, 3 are the results are shown in Table.
Table 3 adds slag temperature and main component change table (weight %) after flying dust
Note：Result of calculation slightly difference when the values such as heat transfer efficiency, specific heat are different
According to table 3, red slag temperature rapid decrease after flying dust is added, slag composition, basicity change are smaller.Mix going out for slag
Furnace temperature cannot be below in flying dust fusing point, the present embodiment, should control tapping temperature >=1400 DEG C, therefore, the maximum addition of flying dust
Speed is no more than 7t/h.Being melted in view of flying dust needs certain degree of superheat, is actually added into speed less than 7t/h.Can from table 3
To find out, flying dust is added after red slag, and red slag ingredient and basicity is not significantly changed, therefore, is added in red slag after flying dust, to red slag
Or the conventional processes of grain slag influence very little with purposes.
Flying dust is warming up to more than flying dust melting temperature in smelting furnace 11 from normal temperature needs certain time, if slag is in smelting furnace 11
Interior movement velocity 0.1m/s, need to stop 150s, slag stroke 15m in smelting furnace.The structure of the smelting furnace 11 of the present embodiment such as accompanying drawing 2
Shown, smelting furnace 11 is rectangle, is arranged in beside slag runner 15, long 4.0m (from slag entrance 7 to the length in the direction of slag exit 8),
Wide 2.0m (perpendicular to the width of red slag inflow direction), pool depth 0.5m (i.e. the height of side wall 2), the shell 1 of side wall 2 is to use
Steel plate parcel is formed, and the inner lining refractory block of shell 1 plays heat-blocking action.Top seal closure 3 is made by the resistance to material of spraying steel plate indefinite form
Form.Build barricade 4 in smelting furnace 11 by laying bricks or stones, barricade 4 also uses refractory brick, forms " ∽ " type baffling passage, effect of the slag in barricade 4
Lower flow path about 16.5m.Heater 5, burning converter or coke-stove gas are set on the side wall 2 of smelting furnace 11.Flying dust passes through flying dust
Adding apparatus 6 is continuously added to from the top of smelting furnace 11, and the left upper portion of smelting furnace 11 sets slag entrance 7, (high from slag producer 13
Stove) slag runner 15 introduce red slag, the upstream of slag runner 15 is sow 14, and the lower right side of smelting furnace 11 sets slag exit 8, and guiding is mixed
Close slag and enter slag runner 15, and then send into water-flushing-slag apparatus 12.The bottom of smelting furnace 11 sets discharge orifice 9, discharges the deposition of molten bath bottom
Thing.The tail gas that seal closure 33 is discharged by pipeline communication to exhaust gas cleaner 10, purification smelting furnace 11.The depth of smelting furnace 11 according to
Content of beary metal is determined in flying dust, the weight % of content of beary metal 0.34 in the flying dust of the present embodiment, adds about 30 tons of ability of flying dust
Assemble about 100kg heavy metals, molten bath volume about needs 0.01m in theory3, pool depth is much larger than the volume in the present embodiment.
Therefore, the device of the present embodiment design can meet production needs.
Embodiment 2
The present embodiment handles the device of garbage flying ash as Figure 6-Figure 7 using blast furnace red dregs.
The slag producer 13 of the present embodiment is blast furnace, and its slag produced is specially red slag, dischargeable capacity about 2000m3,
Produce the pig iron about 4800t daily, produce red slag about 2400t daily, slag iron is than 0.5t/t, slag runner average discharge 300t/h is red during into smelting furnace
1500 DEG C of slag temperature, it is assumed that smelting furnace 11 and slag runner heat waste 20%.The blast furnace discharge yard slag runner is about 70m, and red slag is in slag runner 15
Residence time about 180s.Calculate slag temperature after flying dust is added and be shown in Table 4 with composition transfer.
Table 4 adds slag temperature and composition transfer table (weight %) after flying dust
Note：Heat transfer efficiency, result of calculation slightly difference when the value such as flying dust specific heat is different
According to table 4, flying dust is added after smelting furnace 11, and slag temperature drop rate is very fast, and slag composition change is smaller.Mixing is molten
Slag tapping temperature be cannot be below in flying dust fusing point, the present embodiment, should control tapping temperature >=1400 DEG C, and according to table 4, maximum is added
Speed is no more than 10t/h.Being melted in view of flying dust needs certain degree of superheat, is actually added into speed much smaller than 10t/h.
Flying dust rises to 1400 DEG C in smelting furnace 11 from normal temperature needs certain time, and (the present embodiment is height to slag producer 13
Stove) slag runner 15 be about 70m, red slag residence time about 180s in slag runner 15, flying dust has had longer fusing time.Cause
This, it is only necessary to set a compact vessel 11, for adding flying dust, promote flying dust to be sufficiently mixed with red slag, simultaneously on slag runner 15
Collect the airborne dust and harmful smoke when delivering flying dust.The structure of smelting furnace 11 is as shown in fig. 6-7.The long 2m of smelting furnace 11 is (from slag entrance 7
To the length in the direction of slag exit 8), wide 0.8m (perpendicular to the width of red slag inflow direction), depth 0.5m (the i.e. height of side wall 2
Degree), slag stops about 30s in smelting furnace 11, and slag flowing stroke 2.85m, the shell 1 of smelting furnace 11 is formed with steel plate parcel, interior
Portion builds refractory brick by laying bricks or stones, forms side wall 2, top steel plate and the resistance to material formation seal closure 3 of smelting furnace 11.Build barricade 4 in smelting furnace 11 by laying bricks or stones,
Vertical " N " type baffling passage is formed, slag passes through from the bottom and top of barricade 4, flowed from the slag exit 8 of smelting furnace 11 respectively
Go out, the purpose of barricade 4 is to promote slag fully to be contacted with flying dust, volatile matter is harmful in flying dust and is thermally decomposed and is collected processing.
Heater 5 is set close to the position of slag exit 8 on side wall 2, burn coal gas of converter, in 11 shortage of heat of smelting furnace, heating dress
5 are put to the additional heat of smelting furnace 11, in the case where red slag temperature is reduced, promotes flying dust heating, promotes pernicious gas to decompose.Flying dust
It is continuously added to by flying dust adding apparatus 6 from the top of smelting furnace 11.The left upper portion of smelting furnace sets slag entrance 7, introduces red slag, right side
Bottom sets slag exit 8, and discharge slag is sent to water-flushing-slag apparatus 12 to slag runner 15.The bottom of smelting furnace 11 sets discharge orifice 9, and discharge is molten
Pond deposit.Seal closure 3 is by pipeline communication to exhaust gas cleaner 10, and exhaust gas cleaner 10 plays the tail of purification smelting furnace 11
The effect of gas.The depth of smelting furnace 11 determines according to content of beary metal in flying dust, fly-ash heavy metal content 0.34% in the present embodiment,
About 100kg heavy metals could be assembled by adding about 30 tons of flying dust, and molten bath volume about needs 0.01m in theory3, the present embodiment molten bath depth
Degree is much larger than the volume.To sum up, the device of the present embodiment design can meet production needs.
In summary, the utility model is realized and steel plant's high-temperature slag waste heat is made full use of, and to municipal refuse
Flying ash recycling, high-temperature slag is sufficiently mixed with city garbage burning flying ash in smelting furnace, utilizes high-temperature slag
High temperature sensible heat disposes the harmful components in city garbage burning flying ash, melting and solidification or decomposition flying dust, realizes the money of city solid waste
Sourceization is utilized.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (9)
1. a kind of utilization high-temperature slag handles the device of incineration of refuse flyash, it is characterised in that including smelting furnace (11), the smelting furnace
(11) slag entrance (7), flying dust entrance (61), slag exit (8) are provided with, the smelting furnace (11) includes side wall (2) and peace
Seal closure (3) on side wall (2), the side wall (2), seal closure (3) enclose the chamber to form closing.
2. device according to claim 1, it is characterised in that：Barricade (4) is provided with the chamber of the smelting furnace (11), it is described
The chamber of smelting furnace (11) is divided into the baffling passage passed through for slag by barricade (4).
3. device according to claim 1, it is characterised in that：The side wall (2) is included in shell (1), the shell (1)
Lining refractories.
4. device according to claim 1, it is characterised in that：The slag entrance (7) is connected to slag producer (13),
For introducing high-temperature slag, slag exit (8) the discharge mixing slag is simultaneously sent to water-flushing-slag apparatus (12).
5. device according to claim 1, it is characterised in that：The smelting furnace (11), which is provided with, to be used to deposit in discharge chamber
The discharge orifice (9) of thing.
6. device according to claim 1, it is characterised in that：It is additionally provided with the smelting furnace (11) and chamber interior is added
The heater (5) of heat.
7. device according to claim 1, it is characterised in that：The tail gas for also including being used to purify flue gas in smelting furnace (11) is net
Makeup is put (10), and the exhaust gas cleaner (10) is connected with the chamber of the smelting furnace (11).
8. device according to claim 1, it is characterised in that：Also include passing through the flying dust entrance (61) to smelting furnace (11)
Add the flying dust adding apparatus (6) of flying dust.
9. device according to claim 8, it is characterised in that：The flying dust adding apparatus (6) includes feeding chamber (62), sent
Expects pipe (63), batcher (64), the batcher (64) is by feed pipe (63), flying dust entrance (61) by feeding chamber (62)
In flying dust feeding smelting furnace (11).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106755665A (en) * | 2017-02-20 | 2017-05-31 | 中冶赛迪上海工程技术有限公司 | A kind of utilization high-temperature slag processes the device and method of incineration of refuse flyash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106755665A (en) * | 2017-02-20 | 2017-05-31 | 中冶赛迪上海工程技术有限公司 | A kind of utilization high-temperature slag processes the device and method of incineration of refuse flyash |
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