CN110395916A - A kind of quicklime slaking dust treatment system - Google Patents
A kind of quicklime slaking dust treatment system Download PDFInfo
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- CN110395916A CN110395916A CN201910811054.9A CN201910811054A CN110395916A CN 110395916 A CN110395916 A CN 110395916A CN 201910811054 A CN201910811054 A CN 201910811054A CN 110395916 A CN110395916 A CN 110395916A
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- dust
- mixing drum
- mixed
- belt mechanism
- quicklime slaking
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 69
- 235000012255 calcium oxide Nutrition 0.000 title claims abstract description 69
- 239000000428 dust Substances 0.000 title claims abstract description 67
- 238000002156 mixing Methods 0.000 claims abstract description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 238000005303 weighing Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 27
- 239000003517 fume Substances 0.000 claims description 20
- 238000005245 sintering Methods 0.000 claims description 16
- 239000004615 ingredient Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 16
- 230000029087 digestion Effects 0.000 abstract description 11
- 239000003500 flue dust Substances 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
- C04B2/08—Devices therefor
Abstract
The invention discloses a kind of quicklime slaking dust treatment systems, are related to environment protection treatment field, comprising: quick lime storehouse, weighing belt, mixed feeding belt mechanism, mixing drum and dust-extraction unit.Change traditional quicklime slaking technique, remove burnt lime digester, digestion process is transferred in mixing drum by quick lime orlop, it is digested that dry quick lime is transported to mixing drum after unloading to mixed feeding belt mechanism, front shroud and back cover is respectively set at the discharge end of the mixed feeding belt mechanism and the feed inlet of the mixing drum to trap dusty gas simultaneously, while effectively trapping dusty gas, ensure not to be extracted into the humid gas after fetching water mixture slaking, by being counted dust mass size distribution in the dusty gas with the reasonable filtration velocity of determination, it is effectively reduced filter bag load, also ensure that mixing machine dust remover resistance will not be too high, occupied area is not too large, it realizes and is effectively treated and solves the problems, such as that cleaning shaft and equipment block to quicklime slaking flue dust.
Description
Technical field
The present invention relates to environment protection treatment field more particularly to a kind of quicklime slaking dust treatment systems.
Background technique
The process that existing iron and steel enterprise carries out quicklime slaking all occurs in the quick lime storehouse of primary mixer front end substantially
Under, quick lime meets water digestion heat release and generates a large amount of steam, and entrainment with steam dust, which is formed, contains damp and hot exhaust gas.Postdigestive lime with
Primary mixer is conveyed by belt feeder together with other sintered materials, material is during Belt Conveying and enters mixing drum
Its interior digestion process still remains, and thus can generate largely during Belt Conveying process and entrance mixing drum containing moisture
Dust, seriously pollute environment.
Existing iron and steel enterprise is directed to the pollution that quicklime slaking generates, and conventional administration way generally comprises:
1, quicklime slaking process: wet dust removal is used.In actual moving process, secondary pollution is serious, pipeline and dedusting
Device blocking is serious, and the workload of daily cleaning is very big.
2, belt-conveying process: using closed belt vestibule, and flue dust (predominantly steam) dissipates in vestibule.
3, in the inlet of mixing machine, material can dissipate a large amount of flue dust, cigarette during having bad luck from belt to mixing drum
It include the quick lime of digestion in dirt, water capacity is big, easy to harden；It tries to take various dust collecting process to this each steel mill, comprising:
Wet dust removal, bag-type dusting, sintered plate dedusting etc., but because failing fundamentally to solve, quicklime slaking dust is easy to harden to be asked
Topic, to not can solve air draft pipe and the susceptible to plugging problem of mixing machine deduster, causes all dust pelletizing systems to be unable to escape " short
The final result of life ".
Therefore, it is current urgently to be resolved for how carrying out effective processing for the flue dust generated during quicklime slaking
Technical problem.
Summary of the invention
In order to overcome the shortcomings of Related product in the prior art, the present invention proposes a kind of quicklime slaking dust treatment system
System solves the problems, such as that the flue dust generated during current quicklime slaking cannot be effectively treated.
The present invention provides a kind of quicklime slaking dust treatment systems, comprising: quick lime storehouse, weighing belt, mixed feed skin
Band mechanism, mixing drum and dust-extraction unit, the weighing belt are arranged in below the discharge end in the quick lime storehouse, the mixed feed
Belt mechanism is arranged in below the discharge end of the weighing belt, discharge end and the mixing drum of the mixed feeding belt mechanism
The top of the mixed feeding belt mechanism is arranged in feed inlet connection, the dust-extraction unit, wherein the discharge end of the weighing belt
Be provided with leading portion fume trap cover at the feed end of mixed feeding belt mechanism, the leading portion fume trap cover is connected to just by dedusting air hose
Pass through setting two at the ingredient deduster being closely arranged, the discharge end of the mixed feeding belt mechanism and the feed inlet of the mixing drum
A back segment fume trap cover traps dusty gas respectively, and two back segment fume trap covers are respectively front shroud and back cover, be provide with before described
Set the discharge end in the mixed feeding belt mechanism, the back cover is arranged at the feed inlet of the mixing drum, the front shroud and
Back cover passes through dedusting air hose and is connected to the dust-extraction unit.
In some embodiments of the present invention, beating for multiple transport quicklime slaking water is provided in the mixing drum
Water spot, the exhausting amount of the back cover and the setting position fetched water a little are according to the specification of sintering machine and the size of the mixing drum
It determines, the specification of the sintering machine is effective sintering area, and the size of the mixing drum includes length and diameter.
In some embodiments of the present invention, when the specification of the sintering machine is 180m2, the length of mixing drum be 12m,
When diameter is 3.4m, the exhausting amount of the back cover is 15000m3/ h, the distance for a little feed inlet away from mixing drum of fetching water are 3m.
In some embodiments of the present invention, when the specification of the sintering machine is 360m2, the length of mixing drum is
When 16m, diameter are 3.8m, the exhausting amount of the back cover is 18000m3The distance of/h, a little feed inlet away from mixing drum of fetching water is
3.5m。
In some embodiments of the present invention, the dust-extraction unit includes mixing machine deduster, blower and chimney, institute
It states mixing machine deduster, blower and chimney to be sequentially communicated, the mixing machine deduster is caught by dedusting air hose and the back segment
Collection cover is connected to, and is provided with unloading valve below the mixing machine deduster, the opening of the unloading valve is located at the mixed feed skin
Above band mechanism.
In some embodiments of the present invention, the mixing machine deduster is sack cleaner, the mixing machine dedusting
All inlet pipelines of device are provided with periodically employs the automatic block clearing device that compressed air is purged certainly.
In some embodiments of the present invention, the mixing machine deduster use continuously unloads grey mode and works, i.e., described
Unloading valve remains unlatching after mixing machine deduster operation.
In some embodiments of the present invention, the filtration velocity of the mixing machine deduster is 0.5m/min.
In some embodiments of the present invention, it is provided on the weighing belt to the transport path of mixed feeding belt mechanism
Step discharger slip awaing tube.
Compared with prior art, the present invention has the following advantages:
The present invention changes traditional quicklime slaking technique, removes the quick lime between weighing belt and mixed feeding belt mechanism
Digestion process is transferred in mixing drum by digester by quick lime orlop, and dry quick lime is transported after unloading to mixed feeding belt mechanism
It send digested to mixing drum, while being set respectively at the discharge end of the mixed feeding belt mechanism and the feed inlet of the mixing drum
Front shroud and back cover are set to trap dusty gas, while effectively trapping dusty gas, it is ensured that be not extracted into mixing tube rear end and fetch water
Humid gas after mixture slaking, by being counted dust mass size distribution in the dusty gas with the reasonable mistake of determination
Wind speed to be filtered, filter bag load is effectively reduced, also ensures that mixing machine dust remover resistance will not be too high, occupied area is not too large,
It realizes and is effectively treated and solves the problems, such as that cleaning shaft and equipment block to quicklime slaking flue dust.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of quicklime slaking dust treatment system of the present invention；
Fig. 2 is the corresponding dust settling minimum grain size statistical form of different filtration velocities；
Fig. 3 is the equipment resistance statistical form of different filtration velocities.
Description of symbols:
1- quick lime storehouse, 2- weighing belt, 3- mix feeding belt mechanism, 4- mixing drum, 5- dust-extraction unit, the trapping of 6- leading portion
Cover, 7- back segment fume trap cover, 8- dedusting air hose, 9- ingredient deduster, 41- feed inlet, 42- fetch water point, 51- mixing machine deduster,
52- blower, 53- chimney, 54- unloading valve, 71- front shroud, 72- back cover.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is only
A part of the embodiment of the present invention, instead of all the embodiments, following present presently preferred embodiments of the present invention.The present invention can be with
It realizes in many different forms, however it is not limited to embodiment described herein, on the contrary, provide the purpose of these embodiments
It is to make the disclosure of the present invention more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.The phrase occurs in each position in the description might not
Identical embodiment is each meant, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art
Member explicitly and implicitly understands that embodiment described herein can be combined with other embodiments.
As shown in fig.1, the quicklime slaking dust treatment system includes quick lime storehouse 1, weighing belt 2, mixed feed skin
Band mechanism 3, mixing drum 4 and dust-extraction unit 5, the weighing belt 2 is arranged in below the discharge end in the quick lime storehouse 1, described
Mixed feeding belt mechanism 3 is arranged in below the discharge end of the weighing belt 2, the discharge end of the mixed feeding belt mechanism 3 and institute
The feed inlet 41 for stating mixing drum 4 is connected to, and the top of the mixed feeding belt mechanism 3 is arranged in the dust-extraction unit 5, wherein institute
It states and is provided with leading portion fume trap cover 6 at the discharge end of weighing belt 2 and the feed end of mixed feeding belt mechanism 3, the leading portion trapping
Cover 6 is connected to the ingredient deduster 9 being arranged nearby by dedusting air hose 8, and the discharge end of the mixed feeding belt mechanism 3 is mixed with described
It closes and is provided with back segment fume trap cover 7 at the feed inlet 41 of cylinder 4, the back segment fume trap cover 7 is connected to described remove by dedusting air hose 8
Dirt device 5.Quicklime slaking dust treatment system described in the embodiment of the present invention is by removing weighing belt 2 and mixed feeding belt mechanism
Burnt lime digester between 3, quick lime can generate fugitive dust during being transported to mixed feeding belt mechanism 3 from quick lime storehouse 1,
This part fugitive dust leads to nearest ingredient deduster 9 by the leading portion fume trap cover 6 and dedusting air hose 8, dry quick lime unload to
It is transported to mixing drum 4 after mixed feeding belt mechanism 3, during transportation, because of no digestion, entire transportational process is without fugitive dust, vestibule
Clean conditions are presented, mixes in 3 discharging to mixing drum 4 of feeding belt mechanism and belt turning course can generate a large amount of fugitive dusts,
It is escaped from the feed inlet 41 of mixing drum 4, the dust-extraction unit 5 is connected to by dedusting air hose 8 here with the back segment fume trap cover 7
It is handled, after dry quick lime enters mixing drum 4, water is added to mix, be completed at the same time digestion process and finally sent to sintering machine,
It realizes and quicklime slaking flue dust is effectively treated.
In embodiments of the present invention, in order to reduce ingredient dedusting of the leading portion fume trap cover 6 to being connected to ingredient deduster 9
On the one hand the influence of system will adjust the air quantity of trapping, on the other hand to reduce the soakage of quick lime dust, therefore, described
It is provided with step discharger slip awaing tube on weighing belt 2 to the transport path of mixed feeding belt mechanism 3, uses step discharger slip awaing tube skill herein
Art can effectively reduce the influence to feed proportioning system.
In embodiments of the present invention, since a large amount of fugitive dusts can be generated in mixed feeding belt mechanism 3 discharging to mixing drum 4, because
This, traps dusty gas by two back segment fume trap covers 7 of setting respectively, and specifically, two back segment fume trap covers 7 are distinguished
For front shroud 71 and back cover 72, the discharge end of the mixed feeding belt mechanism 3 is arranged in the front shroud 71, and the setting of back cover 72 exists
At the feed inlet 41 of the mixing drum 4, especially back cover 72, taking out air volume can be directly to the quick lime in mixing drum 4
Digestion and the operation of dust-extraction unit 5 generate direct influence, therefore, how effectively to extract belt discharging fugitive dust as far as possible
While, it is ensured that it is not extracted into 4 rear end of mixing drum and fetches water the humid gas after mixture slaking, is directly related to the operation of whole system,
Specifically, the fugitive dust not extracted by the back cover 72 will necessarily escape from 4 feed inlet 41 of mixing drum, this part fugitive dust is by institute
The trapping of front shroud 71 is stated, if a trap sites are only arranged, it may appear that following problem under the conditions of same design air quantity:
If the back cover 72 is only arranged, to guarantee that all fugitive dusts are captured, air quantity must be increased, thus mixing drum 4
The fetch water wet flue gas of digestion of rear end can trap simultaneously, and the entrance of wet flue gas necessarily causes the stifled of subsequent pipeline and dust-extraction unit 5
Plug, not can guarantee dust pelletizing system stable operation.
If the front shroud 71 is only arranged, because the front shroud 71 apart from fugitive dust point farther out, to guarantee not fugitive dust, to reach same
The trapping effect of sample must expend bigger exhausting amount, and primary investment and operation energy consumption can all increase, and the dust-extraction unit
5 optimal setting positions compare in mixed feeding belt mechanism 3 to the top of 4 transfer station of mixing drum, the use space of the usual position
Anxiety, excessive air quantity need more powerful exhaust equipment, it is likely that lead to insufficient space.
Therefore, before being respectively set at the discharge end of the mixed feeding belt mechanism 3 and the feed inlet 41 of the mixing drum 4
Cover 71 and back cover 72 trap dusty gas respectively, have preferable effect.
On the other hand, be provided in the mixing drum 4 it is multiple transport quicklime slaking water fetch water a little 42, it is described to fetch water
The position setting of point 42 similarly affects the digestion of quick lime in the trapping and mixing drum 4 of dusty gas.
In embodiments of the present invention, the exhausting amount of the back cover 72 and fetch water a little 42 setting position according to sintering machine
Specification and the size of the mixing drum 4 determine that the specification of the sintering machine is effective sintering area, the ruler of the mixing drum 4
Very little includes length and diameter, specifically in embodiments of the present invention, for example, when the specification of the sintering machine is 180m2, mixing drum
When 4 length is 12m, diameter is 3.4m, the exhausting amount of the back cover 72 is 15000m3/ h, fetch water a little 42 away from mixing drum 4 into
The distance of material mouth 41 is 3m；When the specification of the sintering machine is 360m2, when the length of mixing drum 4 is 16m, diameter is 3.8m, institute
The exhausting amount for stating back cover 72 is 18000m3/ h, the distance for a little 42 feed inlets 41 away from mixing drum 4 of fetching water are 3.5m；At this point, described
Back cover 72 can not only efficiently accomplish the trapping of dusty gas, but also will not trap humid gas, wherein what the back cover 72 was connected to
It is provided with electric air volume adjusting valve and smoke moisture analyzer in dedusting air hose 8, it is big exhausting can be adjusted according to smoke moisture
It is small, it is ensured that extraction is dry gas.
The dust-extraction unit 5 include mixing machine deduster 51, blower 52 and chimney 53, the mixing machine deduster 51,
Blower 52 and chimney 53 are sequentially communicated, and the mixing machine deduster 51 is connected by dedusting air hose 8 and the back segment fume trap cover 7
Logical, the lower section of the mixing machine deduster 51 is provided with unloading valve 54, and the opening of the unloading valve 54 is located at the mixed feed skin
3 top of band mechanism；The pumping of blower 52 generates negative pressure, and by the front shroud 71 of connection and back cover 72 respectively described mixed
Dusty gas is trapped at the feed inlet 41 of the discharge end of feeding belt mechanism 3 and the mixing drum 4, dusty gas is by described
It is filtered after mixing machine deduster 51, filtered gas is discharged by the chimney 53, and the dry ash filtered out is by the unloading valve
In 54 decentralizations to the mixed feeding belt mechanism 3.
By detecting to the dusty gas, the Dust of the dusty gas is determined, as shown in the table,
One: the one main Dust table of mixed dedusting flue gas of table
| Dust | TFe | CaO | C | SiO2 | Al2O3 | S | H2O | ... |
| Mass fraction (%) | 15.90 | 36.85 | 30.02 | 2.80 | 1.59 | 0.212 | 2.00 | ... |
CaO content highest, more than 30%, and CaO content height means the easy moisture absorption of the dusty gas, easy plate after the moisture absorption
Knot, so that line clogging phenomenon occurs, in order to avoid this problem, in embodiments of the present invention, the mixing machine deduster 51
For sack cleaner, all inlet pipelines of the mixing machine deduster 51, which are provided with, periodically to be blown from employing compressed air
The automatic block clearing device swept makes inlet pipeline, and dust is not hardened, while the use of mixing machine deduster 51 continuously unloads grey mode and works,
The i.e. described unloading valve 54 remains unlatching after the mixing machine deduster 51 operation, it is ensured that does not deposit in mixing machine deduster 51
Ash.
Filtration velocity is an important technology economic indicator of sack cleaner, and filtration velocity is high, and occupied area is small, primary
Invest low, but resistance is easily high, and purification efficiency is relatively low, and filtration velocity is low then exactly the opposite.For the property of mixing machine flue dust, really
A fixed reasonable filtration velocity increases dust settling, reduces the Dust Capacity for being adsorbed in cloth bag, be it is necessary, therefore, need
It will be by being counted dust mass size distribution in the dusty gas with the reasonable filtration velocity of determination, statistical result is such as
Shown in following table,
The mixed exhaust gas dust mass size distribution of table 2: one
| Dust size (μm) | >60 | 60~40 | 40~30 | 30~20 | 20~10 | 30~20 | <5 |
| Mass fraction (%) | 22.5 | 19.5 | 12.4 | 10.4 | 12.6 | 5.8 | 16.8 |
By table 2 it was determined that the dust size of the dusty gas accounts for twenty percent or more greater than 60 μm, and 30 μm or more
Dust be more than half, as previously mentioned, part large dust particle can be settled by the buffer area of mixing machine deduster 51, according to stream
Mechanics Stokes formula can calculate the minimum grain size of various dust settlings under different filtration velocities.The dusty gas
Main dust be that quick lime, coke powder and sinter (are returned mine) particle, the minimum sedimentation being calculated under different filtration velocities
Partial size is shown in Fig. 2；When filtration velocity chooses 0.2m/min, the quick lime, coke powder and partial size that partial size is greater than about 40 μm are greater than about 30
μm sinter dust can settle before filtration；When filtration velocity choose 1.0m/min when, partial size be greater than about 80 μm quick lime,
The sinter dust that coke powder and partial size are greater than about 70 μm can settle before filtration.Fig. 3 is then the mixing machine under different filtration velocities
51 resistance detection data of deduster, from the figure 3, it may be seen that after the filtration velocity of mixing machine deduster 51 is more than about 0.5m/min,
With the increase of filtration velocity, 51 resistance of mixing machine deduster starts to sharply increase, and in conjunction with Fig. 2, selects the filtering of 0.5m/min
Wind speed has preferable effect, and the quick lime, coke powder and partial size that partial size is greater than about 60 μm under this filtration velocity are greater than about 50 μm
Sinter dust can settle before filtration, contrast table 2, and the dust more than 20% settles in advance, be effectively reduced filter bag load, together
When also ensure that 51 resistance of mixing machine deduster will not be too high, occupied area is not too large, and various aspects reach balance.
Quicklime slaking dust treatment system of the present invention has the following beneficial effects: compared to the prior art
1, by removing the burnt lime digester between weighing belt 2 and mixed feeding belt mechanism 3, dry quick lime is through step
Discharger slip awaing tube is transported to mixing drum 4 after unloading to mixed feeding belt mechanism 3, and in discharge process, fugitive dust is dry dust, is easy to trap
Processing, during transportation, because of no digestion, clean conditions are presented without fugitive dust, vestibule in entire transportational process；
2, quick lime can generate fugitive dust during being transported to mixed feeding belt mechanism 3 from quick lime storehouse 1, this part fugitive dust
Nearest ingredient deduster 9 is led to by the leading portion fume trap cover 6 and dedusting air hose 8.Mixed 3 discharging of feeding belt mechanism extremely mixes
A large amount of fugitive dusts can be generated in cylinder 4, is escaped from the feed inlet 41 of mixing drum 4, passes through the discharge end in the mixed feeding belt mechanism 3
Dusty gas is trapped respectively with front shroud 71 and back cover 72 is respectively set at the feed inlet 41 of the mixing drum 4, here with institute
It states back cover 72 to be connected to the dust-extraction unit 5 by dedusting air hose 8 and handled, effectively extracts belt discharging fugitive dust as far as possible
Simultaneously, it is ensured that be not extracted into 4 rear end of mixing drum and fetch water the humid gas after mixture slaking；
3, by being counted dust mass size distribution in the dusty gas with the reasonable filtration velocity of determination, have
Effect alleviates filter bag load, while also ensuring that 51 resistance of mixing machine deduster will not be too high, and occupied area is not too large, each side
Face reaches balance, while the use of mixing machine deduster 51 continuously unloads grey mode and works, i.e., the described unloading valve 54 is in the mixing machine
Deduster 51 remains unlatching after running, it is ensured that do not deposit ash in mixing machine deduster 51, mixing machine deduster 51 it is all into
Mouth pipeline is provided with periodically from the automatic block clearing device that compressed air is purged is employed, and making inlet pipeline, dust is not hardened,
The final service life for improving dust-extraction unit 5 and reduction maintenance difficulties.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.More than
Only the embodiment of the present invention is not intended to limit the scope of the patents of the invention, although carrying out with reference to the foregoing embodiments to the present invention
Detailed description still can be to recorded in aforementioned each specific embodiment for coming for those skilled in the art
Technical solution modify, or to part of technical characteristic carry out equivalence replacement.It is all to utilize in description of the invention
Hold done equivalence replacement, be directly or indirectly used in other related technical areas, similarly protects model in the invention patent
Within enclosing.
Claims (9)
1. a kind of quicklime slaking dust treatment system characterized by comprising quick lime storehouse, weighing belt, mixed belt feeder
Structure, mixing drum and dust-extraction unit, the weighing belt are arranged in below the discharge end in the quick lime storehouse, the mixed feeding belt
Mechanism is arranged in below the discharge end of the weighing belt, the charging of the discharge end and the mixing drum of the mixed feeding belt mechanism
Mouthful connection, the top of the mixed feeding belt mechanism is arranged in the dust-extraction unit, wherein the discharge end of the weighing belt and mixed
Leading portion fume trap cover is provided at the feed end of feeding belt mechanism, the leading portion fume trap cover is set nearby by the connection of dedusting air hose
After passing through setting two at the ingredient deduster set, the discharge end of the mixed feeding belt mechanism and the feed inlet of the mixing drum
Section fume trap cover traps dusty gas respectively, and two back segment fume trap covers are respectively front shroud and back cover, the front shroud setting exists
The discharge end of the mixed feeding belt mechanism, the back cover are arranged at the feed inlet of the mixing drum, the front shroud and back cover
The dust-extraction unit is connected to by dedusting air hose.
2. quicklime slaking dust treatment system according to claim 1, it is characterised in that: be provided in the mixing drum
Multiple to transport fetching water a little for quicklime slaking water, the exhausting amount of the back cover and the setting position fetched water a little are according to sintering machine
Specification and the size of the mixing drum determine that the specification of the sintering machine is effective sintering area, the ruler of the mixing drum
Very little includes length and diameter.
3. quicklime slaking dust treatment system according to claim 2, it is characterised in that: when the specification of the sintering machine
For 180m2, when the length of mixing drum is 12m, diameter is 3.4m, the exhausting amount of the back cover is 15000m3/ h fetches water a little away from mixed
The distance for closing the feed inlet of cylinder is 3m.
4. quicklime slaking dust treatment system according to claim 2, it is characterised in that: when the specification of the sintering machine
For 360m2, when the length of mixing drum is 16m, diameter is 3.8m, the exhausting amount of the back cover is 18000m3/ h fetches water a little away from mixed
The distance for closing the feed inlet of cylinder is 3.5m.
5. quicklime slaking dust treatment system according to claim 1, it is characterised in that: the dust-extraction unit includes mixed
Conjunction machine deduster, blower and chimney, the mixing machine deduster, blower and chimney are sequentially communicated, the mixing machine dedusting
Device is connected to by dedusting air hose with the back segment fume trap cover, is provided with unloading valve below the mixing machine deduster, described to unload
The opening of grey valve is located above the mixed feeding belt mechanism.
6. quicklime slaking dust treatment system according to claim 5, it is characterised in that: the mixing machine deduster is
Sack cleaner, all inlet pipelines of the mixing machine deduster, which are provided with, periodically employs what compressed air was purged certainly
Automatic block clearing device.
7. quicklime slaking dust treatment system according to claim 6, it is characterised in that: the mixing machine deduster is adopted
It is worked with grey mode is continuously unloaded, i.e., the described unloading valve remains unlatching after mixing machine deduster operation.
8. quicklime slaking dust treatment system according to claim 6, it is characterised in that: the mixing machine deduster
Filtration velocity is 0.5m/min.
9. quicklime slaking dust treatment system according to claim 1, it is characterised in that: the weighing belt to mixed feed
Step discharger slip awaing tube is provided in the transport path of belt mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811054.9A CN110395916A (en) | 2019-08-30 | 2019-08-30 | A kind of quicklime slaking dust treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811054.9A CN110395916A (en) | 2019-08-30 | 2019-08-30 | A kind of quicklime slaking dust treatment system |
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| CN110395916A true CN110395916A (en) | 2019-11-01 |
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| CN201910811054.9A Withdrawn CN110395916A (en) | 2019-08-30 | 2019-08-30 | A kind of quicklime slaking dust treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115040960A (en) * | 2022-06-27 | 2022-09-13 | 山东天景工程设计有限公司 | Dust removal process for mixed dust |
Citations (2)
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| CN105817100A (en) * | 2016-03-16 | 2016-08-03 | 宁波钢铁有限公司 | Method and system for treating pollution of flue dust of primary mixing machine for sintering |
| CN210711295U (en) * | 2019-08-30 | 2020-06-09 | 武汉美林环保科技有限公司 | Quick lime slaking smoke and dust processing system |
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2019
- 2019-08-30 CN CN201910811054.9A patent/CN110395916A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817100A (en) * | 2016-03-16 | 2016-08-03 | 宁波钢铁有限公司 | Method and system for treating pollution of flue dust of primary mixing machine for sintering |
| CN210711295U (en) * | 2019-08-30 | 2020-06-09 | 武汉美林环保科技有限公司 | Quick lime slaking smoke and dust processing system |
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| 徐洪源等: "烧结一次混合机系统工艺优化实践", 《河北冶金》, no. 1, pages 74 - 77 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115040960A (en) * | 2022-06-27 | 2022-09-13 | 山东天景工程设计有限公司 | Dust removal process for mixed dust |
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