CN108267020A - A kind of vertical sinter cooler and sinter cooling means - Google Patents
A kind of vertical sinter cooler and sinter cooling means Download PDFInfo
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- CN108267020A CN108267020A CN201611265351.0A CN201611265351A CN108267020A CN 108267020 A CN108267020 A CN 108267020A CN 201611265351 A CN201611265351 A CN 201611265351A CN 108267020 A CN108267020 A CN 108267020A
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- 238000001816 cooling Methods 0.000 title claims abstract description 126
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- 239000000523 sample Substances 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 12
- 239000000112 cooling gas Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 238000005245 sintering Methods 0.000 description 25
- 230000000694 effects Effects 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- 239000002918 waste heat Substances 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 8
- 238000011084 recovery Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0286—Cooling in a vertical, e.g. annular, shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- General Engineering & Computer Science (AREA)
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Abstract
Vertical cooling machine, it includes：Feed bin (1), cloth tube (2), the tower body being made of tower body head cover (3) and tower wall (4), multiple discharge cone buckets (5) below tower wall (4), vane (H), blast cap (M) and the hot-blast outlet (8) being arranged on tower wall (4) top or tower body head cover (3)；Wherein, head cover (3) is fixedly connected with the upper end of tower wall (4), feed bin (1) is arranged on the top of head cover (3), the upper end of cloth tube (2) is connect with the bottom of feed bin (1), the lower end of cloth tube (2) extend into the lower section of head cover, annular spread is presented in the lower end of tower wall (4) or is circumferentially evenly distributed for the multiple discharge cone bucket (5), the fixed interval (FI) of one week is formed between the lower part of tower wall (4) and the top of multiple discharge cone buckets (5) as vane (H), the bottom centre position of tower body is equipped with the blast cap (M) for extending upwardly into tower body inner space, discharge apparatus (P) is equipped with each discharge cone bucket (5) lower section.
Description
Technical field
The present invention relates to vertical sinter cooler and sinter cooling means, belong to ironmaking field and field of environment protection.
Background technology
During modern sintering process, " cooling " is one of more crucial process.Sinter is in the roasting by sintering machine
After burning, high temperature finished product ore deposit has been formed, how under the premise of its quality and yield rate is not influenced protectiveness cooling to be carried out to it,
Finished product ore storage bin can be sent into through belt feeder, while the sensible heat energy perfection entrained by it is recycled, is all the time
The problem of skilled worker constantly studies in the industry.Since the 1960s, the cooling technique of sinter is rapidly developed,
It is broadly divided into belt cooling, ring type cooling cools down three categories with disc type.In the market competition in later stage, belt cooling technology is washed in a pan
It eliminates, remaining ring type cooling respectively has its advantage and disadvantage with disc type cooling technology.But Integrated comparative, the cold UTILIZATION OF VESIDUAL HEAT IN colder than ring of disk
Rate is more preferable (all sintering mine sensible heats are recycled utilization), therefore disk cold is widely used general in overseas market, and this patent is also
It is illustrated around disk cold technology.
Disk cold technology develops since the seventies, most starts cold for transverse type disk, i.e., cooling wind is out of disk cold
Circumferential outer shroud flowing, is horizontally through the bed of material to be cooled and exchanges heat with it, and the cooling wind after having exchanged heat is directly outer to drain into air.It does so
Both uneconomical or not environmentally, by continuous research optimization for many years, newest disk cold technology is Mitsubishi Hitachi in
It contains " air-draft-type longitudinal direction disk refrigeration technique " that steel proposes.This technology uses exhausting, and cooling wind is pumped into material bottom to be cooled from air
Portion, then up longitudinally through the bed of material, finally from bed of material top, blowout enters subsequent handling.The program and the scheme phase most started
Than having had very big optimization and progress, having described in detail below for the program.
JP2008232519A (Hitachi of Mitsubishi and middle Sheng steel, call D1 in the following text) discloses air-draft-type longitudinal direction disk refrigeration technique, referring to
Fig. 1 therein：Heat sinter enters feed chute from sintering machine tail clan, the stock column of certain altitude is piled into chute, in this way
On the one hand it is to play the role of uniform blanking, is on the other hand to play material envelope to prevent feed inlet string wind action.Mineral aggregate continue to
It is lower to enter in disk cold babinet after hood, push into the stock column of certain altitude.At the same time, by the negative pressure shadow of exhaust fan
It rings, the air near disk cold can be inhaled into via blinds air-intake device in stock column, exchanged heat, changed therewith across stock column from the bottom up
Air after heat is pierced by from stock column top surface into air outlet, is sent to gravitational precipitator and waste heat boiler, finally by taking out
By outer row after wind turbine.Cross section is formed as 37 degree of stocking angle triangles at disk cold lower tray by the sintering feed after air cooling
The annular accumulation area of shape, when being turned to discharge zone, sintering feed is scraped by scraper plate device, and completion cooling process enters next
A process links.
Hitachi of Mitsubishi with it is middle contain steel " air-draft-type longitudinal direction disk refrigeration technique " although more conventional technology has marked improvement, but still
So there are following five point defects：
1) requirement of device whole height is excessively high：Since " air-draft-type longitudinal direction disk refrigeration technique " takes exhausting mode, so necessary
Material envelope, that is, the stock column accumulated in feed chute in Fig. 1 of D1 are set in gating location, material envelope height is with disk cold case
1.2~1.5 times of internal stock column height are standard.The height of whole series of discs device for cooling is thus virtually increased, is pacified in construction
Or it just needs to rise whole sintering machine absolute altitude during dress or just needs down to dig the civil engineering plane of disk cold.No matter choosing
Which kind of mode is selected, can all cause a high cost of investment, it is very not cost-effective in economic indicator；
2) distinguished and admirable open circuit circulation causes utilization rate of waste heat low and pollutes environment：Due to the wind of " air-draft-type longitudinal direction disk refrigeration technique "
It flows for open circuit circulation, the directly outer row of the air come out from waste heat boiler does not recycle, and causes what is spent also 100 in this way more
Air sensible is wasted, and causes a degree of particle for air containing a large amount of little particle dust in the air arranged outside
Object pollutes；
3) material serious wear at feed inlet：Due to " air-draft-type longitudinal direction disk refrigeration technique ", setting material seals at feed chute,
Therefore one section of frictional distance is had between charge level upper strata in material envelope lower part and disk cold babinet.Sintering feed is expected in high temperature and top at this time
Under the double-deck bad working environments that column squeezes, dusting is easy to when being rubbed and becomes broken, so as to reduce the yield rate of sintering machine；
4) environmental pollution is more serious：Due to the negative pressure exhausting technology that " air-draft-type longitudinal direction disk refrigeration technique " is taken, thus it
Sealing closure assembly is not provided at lower box pallet.In this way when sinter is scraped by doctor blade device, it be easy to cause a large amount of subtle
Particle splashes with dust.And once exhaust fan breaks down maintenance, the material dust pushed around disk cold can all enter big
Gas, causes the operating environment by machine and its ill effect；
5) the waste heat boiler thermal efficiency is not up to highest：Since " air-draft-type longitudinal direction disk refrigeration technique " be not the air for being pierced by the bed of material
It is precisely classified according to wind-warm syndrome, but is all mixed into waste heat boiler, it, will certainly in this way when low-temperature zone outlet wind-warm syndrome is too low
The air themperature into waste heat boiler is dragged down, so as to reduce the thermal efficiency value of waste heat boiler.
At present, sinter cooling is mainly using the conventional belt based on strong wind rapid cooling, disposable handling cooling principle
Cooler or circular cooler.No matter which kind of type of cooling used, cooler is all big there are air leak rate of air curtain, and wind turbine power consumption is high, sensible heat
The problems such as the rate of recovery is low, and boiler thermal efficiency is low.In other words, in Vehicles Collected from Market energy-saving requirement with green manufacturing to sintering production
Under increasingly stringenter overall situation, originally device structure has been difficult to realize sintering mine sensible heat high efficiente callback with utilizing.
Therefore, the limitation of traditional ring type cooling or belt cooling is broken through, develops a kind of sintering mine sensible heat high efficiente callback
Technique and technical equipment have been the energy-saving and environment-friendly only ways of sintering industry.
Invention content
Therefore, by research work a large amount of in terms of domestic and international sintering mine sensible heat recycling, it is proposed that one kind is based on small wind
Slow cooling sinter adverse current deep bed sintering cooling technique.The technique is slow with sinter cooling velocity, and ton consumption cooling air quantity is small, exhausted air quantity
Relatively small, exhaust gas temperature is high, and boiler thermal efficiency is high, and cooling exhaust gas can all be utilized by boiler, the sintering mine sensible heat rate of recovery one
As up to 70% or so cooling feature.
According to sinter adverse current deep bed sintering cooling technique, a kind of vertical cooling machine is invented, which has cloth
The characteristics of material is uniform, and discharge is uniform, and cloth wind is uniform, can also carry out region discharge regulatory function according to cooling effect, therefore the cooling
Machine good cooling results, hot blast temperature is high, meets the requirement of sinter adverse current deep bed sintering cooling technique.
The invention vertical cooling machine compared with former ring cold machine, do not leak out by simple structure and reliable sealing, plant maintenance amount
Small, waste heat recovery is efficient.
According to the invention ,the aim of the invention is to provide a kind of vertical cooling machine for cooling down sinter, it is tower structure, because
This, also referred to as tower cooler.
According to the present invention, a kind of vertical cooling machine is provided, which includes：Feed bin, cloth tube, by tower body head cover
The tower body formed with tower wall, multiple discharge cone buckets below tower wall, vane and are arranged on tower wall top or tower body at blast cap
Hot-blast outlet on head cover；
Wherein, head cover is fixedly connected with the upper end of tower wall, and feed bin is arranged on the top of head cover, the upper end of cloth tube and feed bin
Bottom connection, the lower end of cloth tube extend into the lower section of head cover,
Annular spread is presented in the lower end of tower wall or is circumferentially evenly distributed for the multiple discharge cone bucket,
The fixed interval (FI) of one week is formed between the lower part of tower wall and the top of multiple discharge cone buckets (to be used for defeated as vane
Enter cold wind),
The bottom centre position of tower body be equipped with extend upwardly into tower body inner space blast cap and
Discharge apparatus is equipped with below each discharge cone bucket.
In this application, the bottom of tower body is by being located at the blast cap of bottom centre position and multiple discharge cone buckets of annular spread
It forms.That is, there is the discharge cone bucket (that is, multiple discharge cone buckets are arranged in a circle) of a circle in tower wall lower part.
Preferably, which further includes vane air supply device.The vane air supply device include vane air duct and
The vane air hose connected on vane air duct, the circular vane in the vane air duct are simultaneously coupled logical.
It is preferred that the vertical cooling machine further includes blast cap air supply device.The blast cap air supply device includes multiple blast cap branch pipes, ring
The blast cap air duct of shape or " C " shape and the blast cap air hose being connect with blast cap air duct, one end and the blast cap air duct of each blast cap branch pipe
Connection and the other end are connected with the bottom of blast cap.
In general, the lower section of discharge apparatus end is equipped with cold sinter transport device.
It is preferred that in the lower part of tower wall or lower section and in the top of discharge cone bucket, further there is provided a tower wall transition
Section.In this way, installation discharge cone bucket is more convenient in the lower part of tower wall.In this case, by tower body head cover, tower wall and lower part
(back taper tubular) tower wall changeover portion constitutes tower body.Back taper tubular or rounding cone barrel is presented in tower wall changeover portion, that is, under it
The interior diameter in portion is less than the interior diameter on its top.It may also be referred to as transition bucket or make top cone bucket.(circle) cone barrel
The cone angle of tower wall changeover portion is usually 60-75 degree, preferably>63.5 degree.
It is preferred that in the lower part of tower wall or on tower wall changeover portion, preferably along its circumferencial direction, visited equipped with multiple thermometrics
Head；Preferably, the temperature probe is thermocouple temperature sensor.
It is preferred that the middle part or lower part of discharge cone bucket are equipped with regulating rod.By adjust regulating rod be inserted into the bed of material in depth come
Adjust the discharge velocity of discharge cone bucket.
It is preferred that in vertical cooling machine, the height h1 of discharge cone bucket is more than the feed height h2 of tower wall.
Generally, the number of discharge cone bucket is 4-12, preferably 6-10,6-8.The horizontal stroke at the top of these discharge cone buckets
Section is adjacent to each other, forms a ring.
It is preferred that blast cap branch pipe is 1-12 roots, preferably 2-10 roots, more preferably 4-8 roots, more preferable 6-8 roots；Preferably
It is, in gap of each blast cap branch pipe between two adjacent discharge cone buckets.
It is preferred that the blast cap includes supporting rack, hood top cover, multiple taper cover boards and blast cap air hose, plurality of taper
Cover board is successively set on supporting rack, and hood top cover is arranged on the top of top taper cover board, and air hose is arranged on supporting rack
It lower section and is connect with supporting rack；Preferably, the hood top cover is pyramidal structure.
Generally, gas channel is formed between the neighbouring taper cover board.
The cone angle of the hood top cover is more than the cone angle of taper cover board.Blast cap is located at the center of the bottom of tower body simultaneously
It extends upwardly into tower body so that the form for entering the wind the solid accumulation thickness in the length and tower body of approach is consistent, it is ensured that no
It is about consistent with the gas-flow resistance at position.
It is preferred that discharge apparatus is oscillating feeder.It is further preferred that discharge apparatus is double-deck oscillating feeder, bilayer vibration
Batcher includes body rack, upper strata vibra shoot, lower floor's vibra shoot, vibrator；Upper strata vibra shoot and lower floor's vibra shoot are arranged on
On body rack, upper strata vibra shoot is located at the top of lower floor's vibra shoot, upper strata vibra shoot and lower floor's vibra shoot respectively with vibrator
Connection.Preferably, upper strata vibra shoot and/or lower floor's vibra shoot are equipped with regulating device, and regulating device adjusts lower floor's vibra shoot
Bottom plate inclination angle.This discharge apparatus of the present invention can control discharge velocity well.
It is preferred that vibrator includes upper strata vibrator and lower floor's vibrator, upper strata vibrator is connect with upper strata vibra shoot, lower floor
Vibrator is connect with lower floor vibra shoot.Preferably, upper strata vibra shoot and lower floor's vibra shoot are arranged on body rack by spring
On.
It is preferred that the vertical cooling machine further includes control system.Control system and vane air supply device, blast cap air supply device,
Temperature probe, regulating rod, cold sinter transport device, discharge apparatus connection, and control vane air supply device, blast cap air feed dress
It puts, the operation of temperature probe, regulating rod, cold sinter transport device, discharge apparatus.
In this application, tower wall is cylindrical or rectangular barrel-like structure.That is, the cross section of tower wall is circle, oval, square
Or rectangle.
According to the present invention, a kind of sinter cooling means is also provided or is come using a kind of above-described vertical cooling machine cold
But the method for sinter, this method include the following steps：
(1) sinter enters in the feed bin of vertical cooling machine, under gravity continuous flowing from top to bottom, via cloth
Expects pipe is deposited in the tower body of cooler；
(2) it is logical to convey cooling gas (such as air) respectively for the vane air supply device of vertical cooling machine and blast cap air supply device
It crosses vane and blast cap enters in tower body, cooling gas (i.e. cold wind or cooling air) passes through the burning being deposited in tower body from bottom to top
Mineral aggregate layer is tied, and countercurrent heat exchange is carried out with sinter, heat exchange postcooling gas temperature gradually rises, through vertical cooling machine tower
Interior sinter charge level discharge, forms high-temperature hot-air, high-temperature hot-air is discharged through hot-blast outlet；Preferably, high-temperature hot-air is conveyed
Into afterheat utilizing system；
(3) be deposited in sinter in the tower body of cooler and cooling gas from bottom to top carry out countercurrent heat exchange and by
Cooling, enters in the discharge cone bucket of vertical cooling machine lower part, then discharged by discharge apparatus (such as to be discharged to cold sinter defeated
It send on machine).
It is preferred that in the above-mentioned methods, the temperature detected according to temperature probe, control system control vane air supply device,
The operation of blast cap air supply device, regulating rod, cold sinter transport device, discharge apparatus.
It is preferred that setting temperature probe corresponding with each discharge cone bucket, the temperature detected according to each temperature probe
Degree, control system control the operation of corresponding discharge apparatus or Discharge outlet.
In the present invention, it is however generally that, the vertical cooling machine is mainly by feed bin, cloth tube, head cover, tower wall, vane, vane
Air supply device, blast cap, blast cap air supply device, discharge cone bucket, discharge apparatus, hot-blast outlet composition.Feed bin, cloth tube composition are uniform
Feed system after heat sinter enters feed bin, under the effect of gravity into cloth tube, then flows out, into head cover from cloth tube
In the tower body of tower wall composition, the natural packing in tower body；Cooling wind is uniformly blown into vane by vane air supply device, then passes through
Vane is uniformly blown into the sinter of tower body accumulation, and sinter is cooled down；Cooling wind can also pass through blast cap air supply device
Blast cap uniformly is blown into, then is uniformly blown into the sinter of tower body accumulation by blast cap, sinter is cooled down；Burning after cooling
Knot ore deposit by gravity flow into discharge cone bucket, discharge cone bucket it is evenly distributed in the circumferential direction several, ensure that and pass through
The sinter of discharge cone bucket can equably flow downward；Each discharge cone bucket lower end connects a discharge apparatus, passes through discharge
Equipment can control the discharge velocity of each discharge cone bucket.Into tower body cooling wind pass through with after the heat exchange of heat sinter,
By heat sinter be cooled to 150 DEG C hereinafter, and itself be heated to higher temperature as hot wind, hot wind passes through after passing through the bed of material
The charge level on bed of material top, the non-material area of the upper end of tower body formed into head cover and tower wall, is then discharged using hot-blast outlet,
Into follow-up afterheat generating system.
Feed bin is a cylindrical or rectangular barrel-like structure, for buffering the heat sinter for holding conveyer transport and coming, material
Orlop portion is fixedly connected on head cover.Cloth tube is a cylindrical or rectangular barrel-like structure, positioned at bin bottom, the upper end and material
Orlop portion is fixedly connected, and lower end is stretched into below head cover, inside the tower body formed positioned at head cover and tower wall, wherein, sinter can be with
It is entered inside cloth tube under the effect of gravity from the bottom of feed bin, and can be under gravity from cloth tube lower openings
Freely flow out.Tower wall is a cylindrical or rectangular barrel-like structure, and the upper end is fixedly connected with head cover, between lower end and discharge cone bucket
The fixed interval (FI) of one week is formed, is vane, on the basis of some position is fixed on therebetween, the weight of head cover is undertaken on tower wall
One week.Vane is the one week cavity formed between tower wall and discharge cone bucket, cooling wind can uniformly across a circle vane to
Sinter in tower body is blown into, and is sintered the cooling of ore deposit.Vane air supply device, can be to one week air feed of vane.Blast cap is located at
Tower wall inner lower position, is located on discharge cone bucket, and cooling wind can be uniformly through the sintering in the circumferential tower body of blast cap one
Ore deposit is blown into, and is sintered the cooling of ore deposit.Discharge cone bucket is located at tower wall lower end, is fixed with basis, while wind is formed between tower wall
Ring, blast cap are fixed thereon end, discharge cone bucket it is evenly distributed in the circumferential direction several, generally 4-8, shape is upper big
Under small abnormity or circle or pyramidal structure.Sinter after cooling is by gravity flowed into discharge cone bucket.Each row
Material cone bucket lower end all connects a discharge apparatus, and the discharge velocity of each discharge cone bucket can be controlled by discharge apparatus.Hot wind goes out
Mouth is located at tower wall top, is fixedly connected with tower wall, and with being connected inside tower body, and hot wind passes through bed of material top after passing through the bed of material
Charge level, the non-material area of the upper end of tower body formed into head cover and tower wall, is then discharged using hot-blast outlet, more than follow-up
Heat generating system.
Preferably, several temperature probes are circumferentially evenly arranged in tower wall lower part, position is located at vane top, fixed
In tower wall, one end extend into it is a bit of in tower body, for detecting the temperature of sinter herein, it is preferable that temperature probe
It can be thermocouple temperature sensor.It is just normal after the sinter temperature of some circumferential position of detection reaches cooling effect
The discharge apparatus or Discharge outlet below the corresponding discharge cone bucket in the region are opened in ground, normal discharge are carried out, conversely, then mutually coping with
It reduces the discharge velocity of discharge apparatus or closes discharge apparatus, the sinter in the region is allowed to cool down a period of time again, works as sinter
After temperature reaches cooling effect, normal discharge is being carried out.
Preferably, discharge cone bucket can play the role of material envelope.By vane and blast cap enter the cooling wind of tower body to
Across the sinter bed of material, must just there be certain pressure, under the effect of the pressure, cooling wind can also be passed down through discharge cone bucket,
It is discharged below discharge cone bucket to reduce cooling wind as best one can at this time, it is necessary to the height of discharge cone bucket is suitably improved, and
At this point, discharge cone bucket just plays the role of material envelope.Preferably, the height H1 of discharge cone bucket is greater than bed depth H2.
Preferably, regulating rod can be set on the side wall of each discharge cone bucket.Regulating rod is arranged on discharge cone bucket side wall
On, it can laterally move, the discharge velocity of corresponding discharge cone bucket can also be adjusted by regulating rod.
Preferably, discharge cone bucket upper end interconnects between adjacent discharge cone bucket, is split up into several still further below
Structure.
Preferably, vane air supply device is made of vane air duct and vane air hose, and vane air duct is arranged on the outside of vane, will
Vane is surrounded for one week, and cooling wind can be by vane air duct equably to vane air feed, and vane air hose connects with vane air duct
It is logical, to vane air duct air feed.
Preferably, blast cap air supply device is made of blast cap branch pipe, blast cap air duct and blast cap air hose.Blast cap branch pipe is circumferentially equal
It is even to arrange several, it is preferable that blast cap branch pipe except sinter logistics, is not sintered across adjacent discharge cone bucket
The friction of ore deposit.Each blast cap branch pipe one end is connected with blast cap, and another section connects with blast cap air duct.It is responsible for equably in blast cap air duct
To each blast cap branch pipe air feed.Blast cap air hose is responsible for blast cap air duct air feed.
By the broken heat sinter of single roll crusher, vertical cooling machine top is transported by heat sinter conveying device
Portion is entered in vertical cooling machine feed bin, sinter continuous flowing from top to bottom under the effect of gravity, by vertical cooling machine material
Storehouse and cloth tube, natural packing carry out countercurrent heat exchange in tower body, with the cooling wind in machine from bottom to top, and sinter temperature is cold
But to after less than 150 DEG C, by the discharge cone bucket of vertical cooling machine lower part, cold sinter conveying is then discharged to by discharge apparatus
On machine, then by cold sinter conveyer sinter after cooling is transported into subsequent processing.
Cooling gas is under the action of circulating fan, from vertical cooling machine vane air supply device and blast cap air supply device with one
Fixed pressure is fed by vane and (via blast cap branch pipe) blast cap in body, from bottom to top across the sinter bed of material, and with burning
It ties ore deposit and carries out countercurrent heat exchange.Heat exchange postcooling gas temperature gradually rises, and sinter charge level is arranged in vertical cooling machine tower
Go out, form high-temperature hot-air.Hot-blast outlet discharge of the high-temperature hot-air through vertical cooling machine top.After the high-temperature hot-air of discharge enters
Continuous afterheat generating system.
Preferably, which also has self feed back discharge regulatory function.The sintering of corresponding region is detected by temperature probe
Ore deposit temperature after the sinter temperature of some circumferential position of detection reaches cooling effect, just normally opens region correspondence
Discharge cone bucket below discharge apparatus, carry out normal discharge, conversely, then mutually reply reduce discharge apparatus discharge velocity or pass
Discharge apparatus is closed, the sinter in the region is allowed to cool down a period of time again, after sinter temperature reaches cooling effect, is being carried out just
Normal discharge.It is also possible to the adjusting of discharge velocity is carried out by adjusting the insertion depth of regulating rod.
The surface toughness of the pelletizing shape sinter of high temperature, once cooling, is adhered to one another, the equipment of the prior art
Discharge difficulty is often resulted in, still, equipment of the invention has well solved this problem.
Generally, the height for the tower body being made of head cover and tower wall is usually 5-18 meters, preferably 6-15 meters, more preferable 7-12
Rice.The overall diameter of tower body is generally 8-30 meters, preferably 9-27 meters, preferably 10-25 meters, preferably 11-22 meters, 12-20 meters more preferable.
In this application, the diameter of blast cap is usually 1.5-4 meters, preferably 1.8-3.5 meters, 2-3 meters more preferable, more preferably
2.2-2.8 rice, such as 2.5 meters.
In this application, the diameter of vane or interior diameter are usually 7-26 meters, preferably 8-24 meters, preferably 9-22 meters, preferably
It is 10-20 meters, 12-15 meters more preferable.
The diameter or interior diameter of vane are usually 0.65-0.96 times of the overall diameter of tower body, preferably 0.68-0.94 times, excellent
Select 0.70-0.92 times, more preferable 0.73-0.9 times, more preferable 0.78-0.88 times, more preferable 0.8-0.86 times.
Compared with prior art, the present invention has following advantageous effects：
Cloth is uniform in present device, and discharge is uniform, and cloth wind is uniform.Can also region discharge tune be carried out according to cooling effect
Function is saved, therefore the cooler good cooling results, hot blast temperature height meet the requirement of sinter adverse current deep bed sintering cooling technique.
The invention vertical cooling machine compared with the ring cold machine of the prior art, do not leak out by simple structure and reliable sealing, if
Standby maintenance is small, and waste heat recovery is efficient.Cooling feature of the sintering mine sensible heat rate of recovery generally up to 70% or so.
The technique can also overcome the problems, such as double sintering of the sinter in vertical cooling device, prevent vertical cooling device
There is blocking phenomenon.
1st, it is simple in structure, equipment investment is reduced, and reduce the operating cost of equipment；
2nd, the good airproof performance of device, the heat recovery efficiency of sinter is high and obtains the exhaust gas (hot wind) of high temperature for producing
Raw steam, and for generating electricity in the form of high-temperature steam, electricity generation efficiency higher；
3rd, discharge significantly reduces the frequency of shutdown, maintenance without clogging；
4th, it operates continuously, the material upper strata in tower body is the sinter of heat just added in always so that across upper layer substance
The hot wind of material has high temperature.High-temperature hot-air is for generating high-temperature steam, and high-temperature steam drives steam turbine fast turn-around so that power generation
The generating efficiency of machine significantly improves；
It 5th, can be by independently controlling each discharge according to the temperature of the top material of each discharge cone bucket detected
The discharge velocity of cone bucket, to adjust the temperature.
Description of the drawings
Fig. 1 is a kind of structure diagram of vertical cooling machine of the present invention；
Fig. 2 is vane of the present invention and vane air supply device structure diagram；
Fig. 3 is blast cap of the present invention and blast cap air supply device structure diagram；
Fig. 4 is discharge cone bucket layout drawing of the present invention；
Fig. 5 is temperature probe layout drawing of the present invention；
Fig. 6 is regulating rod layout drawing of the present invention；
Fig. 7 is the structure diagram of blast cap of the present invention；
Fig. 8 is the structural scheme of mechanism of vibrator there are two the double-deck oscillating feeder of the present invention is set；
Fig. 9 is the structural scheme of mechanism of vibrator there are one the double-deck oscillating feeder of the present invention is set；
Figure 10 is a kind of control system schematic diagram of vertical cooling machine of the present invention.
Reference numeral：A1：Vertical cooling machine；1：Feed bin；2：Cloth tube；3：Head cover；4：The tower wall of tower body；4a：Under tower body
The tower wall changeover portion of the back taper tubular in portion；5：Discharge cone bucket；6：Vane air supply device；601：Vane air duct；602：Vane air hose；
7：Blast cap air supply device；701：Blast cap by-path；702：Blast cap air duct；703：Blast cap air hose；8：Hot-blast outlet；9：Temperature probe；
10：Regulating rod；11：Cold sinter conveying device；P：Discharge apparatus；P01：Body rack；P02：Upper strata vibra shoot；P03：Lower floor
Vibra shoot；P04：Vibrator；P0401：Upper strata vibrator；P0402：Lower floor's vibrator；P05：Regulating device；H：Vane；M：Wind
Cap；M01：Supporting rack；M02：Head cover；M03：Taper cover board；M04：Air hose；h1：The height of discharge cone bucket；h2：The tower wall of tower body
Feed height.K：Control system.
Specific embodiment
As shown in figures 1 to 9, according to the present invention, a kind of vertical cooling machine is provided, vertical cooling machine A1 includes：Feed bin 1,
Cloth tube 2, the tower body being made of tower body head cover 3 and tower wall 4, multiple discharge cone buckets 5 positioned at 4 lower section of tower wall, vane H, blast cap M
And it is arranged on the hot-blast outlet 8 on 4 top of tower wall or tower body head cover 3；
Wherein, head cover 3 is fixedly connected with the upper end of tower wall 4, and feed bin 1 is arranged on the top of head cover 3, the upper end of cloth tube 2
It being connect with the bottom of feed bin 1, the lower end of cloth tube 2 extend into the lower section of head cover,
Annular spread is presented in the lower end of tower wall 4 or is circumferentially evenly distributed for the multiple discharge cone bucket 5,
The fixed interval (FI) of one week is formed between the lower part of tower wall 4 and the top of multiple discharge cone buckets 5 as vane H,
The bottom centre position of tower body be equipped with extend upwardly into tower body inner space blast cap M and
Each 5 lower section of discharge cone bucket is equipped with discharge apparatus P.
In this application, the bottom of tower body is by being located at the blast cap M of bottom centre position and multiple discharge cones of annular spread
Bucket 5 is formed.That is, there is the discharge cone bucket 5 of a circle in 4 lower part of tower wall.
Preferably, vertical cooling machine A1 further includes vane air supply device 6.The vane air supply device 6 includes vane wind
Road 601 and the vane air hose 602 connected on vane air duct 601, the circular vane H in the vane air duct 601 are simultaneously coupled
Lead to (as shown in Figure 2).
It is preferred that vertical cooling machine A1 further includes blast cap air supply device 7.The blast cap air supply device 7 includes multiple blast cap branch
Pipe 701, annular or " C " shape blast cap air duct 702 and the blast cap air hose 703 being connect with blast cap air duct 702, each blast cap branch pipe
701 one end is connected with blast cap air duct 702 and the other end is connected with the bottom of blast cap M.
In general, the lower section of discharge apparatus P ends is equipped with cold sinter transport device 11.
It is preferred that in the lower part of tower wall 4 or lower section and in the top of discharge cone bucket 5, further there is provided a tower wall mistakes
Cross a section 4a.In this way, installation discharge cone bucket 5 is more convenient in the lower part of tower wall 4.In this case, by tower body head cover 3,4 and of tower wall
(back taper tubular) the tower wall changeover portion 4a of lower part constitutes tower body.Back taper tubular is presented in tower wall changeover portion 4a, that is, its lower part
Interior diameter be less than its top interior diameter.It may also be referred to as transition bucket or make top cone bucket.The tower wall mistake of back taper tubular
The cone angle for crossing section 4a is usually 60-75 degree, preferably>63.5 degree.
It is preferred that in the lower part of tower wall 4 or on tower wall changeover portion 4a, preferably along its circumferencial direction, equipped with multiple thermometrics
Probe 9；Preferably, the temperature probe 9 is thermocouple temperature sensor.
It is preferred that the middle part or lower part of discharge cone bucket 5 are equipped with regulating rod 10.The depth being inserted into the bed of material by adjusting regulating rod
To adjust the discharge velocity of discharge cone bucket 5.
It is preferred that in vertical cooling machine A1, the height h1 of discharge cone bucket 5 is more than the feed height h2 of tower wall 4.
Generally, the number of discharge cone bucket 5 is 4-12, preferably 6-10,6-8.The top of these discharge cone buckets 5
Cross section is adjacent to each other, forms a ring, as shown in Figure 4.
It is preferred that blast cap branch pipe 701 is 1-12 roots, preferably 2-10 roots, more preferably 4-8 roots, more preferable 6-8 roots；It is preferred that
, in gap of each blast cap branch pipe 701 between two adjacent discharge cone buckets 5, as shown in Figure 3.
It is preferred that the blast cap M includes supporting rack M01, hood top cover M02, multiple taper cover board M03 and blast cap air hose M04,
Plurality of taper cover board M03 is successively set on supporting rack M01, and hood top cover M02 is arranged on top taper cover board M03's
Top, air hose M04 are arranged on the lower section of supporting rack M01 and are connect with supporting rack M01；Preferably, the hood top cover M02
For pyramidal structure.
Generally, gas channel is formed between the neighbouring taper cover board M03.
The cone angle of the hood top cover M02 is more than the cone angle of taper cover board M03.Blast cap M is located in the bottom of tower body
Heart position is simultaneously extended upwardly into tower body so that the form for entering the wind the solid accumulation thickness in the length and tower body of approach keeps one
It causes, it is ensured that the gas-flow resistance of different parts is about consistent.
It is preferred that discharge apparatus P is oscillating feeder.It is further preferred that discharge apparatus P is double-deck oscillating feeder, the double-layer vibration
Dynamic batcher includes body rack P01, upper strata vibra shoot P02, lower floor vibra shoot P03, vibrator P04；Upper strata vibra shoot P02 and
Lower floor vibra shoot P03 is arranged on body rack P01, and upper strata vibra shoot P02 is located at the top of lower floor vibra shoot P03, and upper strata shakes
Dynamic slot P02 and lower floor vibra shoot P03 is connect respectively with vibrator P04.Preferably, upper strata vibra shoot P02 and/or lower floor's vibration
Slot P03 is equipped with regulating device P05, and regulating device P05 adjusts the bottom plate inclination angle of lower floor vibra shoot P03.This row of the present invention
Material equipment can control discharge velocity well.
It is preferred that vibrator P04 include upper strata vibrator P0401 and lower floor vibrator P0402, upper strata vibrator P0401 with
Upper strata vibra shoot P02 connections, lower floor vibrator P0402 are connect with lower floor vibra shoot P03.Preferably, upper strata vibra shoot P02 and
Lower floor vibra shoot P03 is arranged on by spring on body rack P01.
It is preferred that vertical cooling machine A1 further includes control system K, control system K and vane air supply device 6, blast cap air feed
Device 7, temperature probe 9, regulating rod 10, cold sinter transport device 11, discharge apparatus P connections, and control vane air supply device
6th, the operation of blast cap air supply device 7, temperature probe 9, regulating rod 10, cold sinter transport device 11, discharge apparatus P.
In this application, tower wall 4 is cylindrical or rectangular barrel-like structure.That is, the cross section of tower wall 4 is circle, oval, pros
Shape or rectangle.
According to the present invention, a kind of sinter cooling means is also provided or is come using a kind of above-described vertical cooling machine cold
But the method for sinter, this method include the following steps：
(1) sinter enters in the feed bin 1 of vertical cooling machine A1, under gravity continuous flowing from top to bottom, warp
By cloth tube 2, it is deposited in the tower body of cooler；
(2) it is (such as empty to convey cooling gas respectively for the vane air supply device 6 of vertical cooling machine A1 and blast cap air supply device 7
Gas) entered in tower body by vane H and blast cap M, cooling gas (i.e. cold wind or cooling air) passes through be deposited in tower from bottom to top
The internal sinter bed of material, and countercurrent heat exchange is carried out with sinter, heat exchange postcooling gas temperature gradually rises, through vertical
Sinter charge level is discharged in cooler A1 towers, forms high-temperature hot-air, and high-temperature hot-air is discharged through hot-blast outlet 8；Preferably, high temperature
Hot wind is transported in afterheat utilizing system；
(3) be deposited in sinter in the tower body of cooler and cooling gas from bottom to top carry out countercurrent heat exchange and by
Cooling, enters in the discharge cone bucket 5 of vertical cooling machine A1 lower parts, then (such as is discharged to cold sintering by discharge apparatus P discharges
On ore deposit conveyer 11).
It is preferred that in the above-mentioned methods, according to the temperature that temperature probe 9 is detected, control system K control vane air supply devices
6th, the operation of blast cap air supply device 7, regulating rod 10, cold sinter transport device 11, discharge apparatus P.
It is preferred that setting temperature probe 9 corresponding with each discharge cone bucket 5, is detected according to each temperature probe 9
Temperature, control system K control the operation of corresponding discharge apparatus P or Discharge outlet.
The equipment also has self feed back discharge regulatory function.The sinter temperature of corresponding region is detected by temperature probe,
After the sinter temperature of some circumferential position of detection reaches cooling effect, the corresponding discharge cone in the region is just normally opened
Discharge apparatus below struggling against, carries out normal discharge, conversely, then mutually reply reduces the discharge velocity of discharge apparatus or closing discharge is set
It is standby, the sinter in the region is allowed to cool down a period of time again, after sinter temperature reaches cooling effect, is carrying out normal discharge.
It is also possible to the adjusting of discharge velocity is carried out by adjusting the insertion depth of regulating rod.
Embodiment 1
It it is 9 meters by the height of tower body that head cover and tower wall form, the overall diameter of tower body is 13 meters.The height of discharge cone bucket is
7 meters.
The diameter of blast cap is 2.5 meters.The interior diameter of vane is about 11 meters.
The daily handling ability of sinter is 8600 ton days.The temperature of sinter before into feed bin is 700 DEG C of left sides
The right side, the hot blast temperature of hot-blast outlet 8 reach 500 DEG C or so.For the heat of recycling for generating electricity, generated energy is about 34 degree of electricity.
Compared with the ring cold machine of the prior art, advantage is：Generated energy is high, air leak rate of air curtain is low, dust emission is small, and equipment simply may be used
It leans on, due to better tightness, technology of the invention is capable of providing the hot wind of higher temperature for generating high-temperature steam, significantly improves
Electricity generation efficiency.
The technique can also overcome the problems, such as double sintering of the sinter in vertical cooling device, prevent vertical cooling device
There is blocking phenomenon.Device is run 6 months, the problem of putty, stuck does not occur.
Claims (15)
1. a kind of vertical cooling machine, which includes：Feed bin (1), cloth tube (2), by tower body head cover (3) and tower
The tower body that wall (4) is formed, multiple discharge cone buckets (5) below tower wall (4), vane (H) and are arranged on tower at blast cap (M)
Hot-blast outlet (8) on wall (4) top or tower body head cover (3)；
Wherein, head cover (3) is fixedly connected with the upper end of tower wall (4), and feed bin (1) is arranged on the top of head cover (3), cloth tube (2)
Upper end connect with the bottom of feed bin (1), the lower end of cloth tube (2) extend into the lower section of head cover,
Annular spread is presented in the lower end of tower wall (4) or is circumferentially evenly distributed for the multiple discharge cone bucket (5),
The fixed interval (FI) of one week is formed between the lower part of tower wall (4) and the top of multiple discharge cone buckets (5) as vane (H),
The bottom centre position of tower body be equipped with extend upwardly into tower body inner space blast cap (M) and
Discharge apparatus (P) is equipped with below each discharge cone bucket (5).
2. vertical cooling machine according to claim 1, it is characterised in that the vertical cooling machine (A1) further includes vane air feed
Device (6), the vane air supply device (6) include vane air duct (601) and the vane air hose connected on vane air duct (601)
(602), the vane air duct (601) is around the vane (H) and coupled logical.
3. vertical cooling machine according to claim 1 or 2, it is characterised in that the vertical cooling machine (A1) further includes blast cap confession
Wind apparatus (7), the blast cap air supply device (7) including multiple blast cap branch pipes (701), annular or " C " shape blast cap air duct (702) and
The blast cap air hose (703) being connect with blast cap air duct (702), one end and the blast cap air duct (702) of each blast cap branch pipe (701) connect
The logical and other end is connected with the bottom of blast cap (M).
4. a kind of vertical cooling machine according to any one of claim 1-3, it is characterised in that：Discharge apparatus (P) end
The lower section at end is equipped with cold sinter transport device (11)；And/or
In the lower part of tower wall (4) or lower section and in the top of discharge cone bucket (5), further setting (rounding cone barrel) tower wall
Changeover portion (4a).
5. a kind of vertical cooling machine according to any one of claim 1-4, it is characterised in that：Discharge cone bucket (5)
Middle part or lower part are equipped with regulating rod (10)；And/or
The lower part of tower wall (4) or on tower wall changeover portion (4a) (preferably along its circumferencial direction) equipped with multiple temperature probes
(9), it is preferred that the temperature probe (9) is thermocouple temperature sensor.
6. a kind of vertical cooling machine according to any one of claims 1-5, it is characterised in that：Of discharge cone bucket (5)
Number is 4-12, preferably 6-10, preferably 6-8.
7. a kind of vertical cooling machine according to any one of claim 3-6, it is characterised in that：Blast cap branch pipe (701) is
1-12 roots, preferably 2-10 roots, more preferably 4-8 roots, more preferable 6-8 roots；Preferably, each blast cap branch pipe (701) position
In gap between two adjacent discharge cone buckets (5).
8. a kind of vertical cooling machine according to any one of claim 1-7, it is characterised in that：The blast cap (M) includes
Supporting rack (M01), hood top cover (M02), multiple taper cover boards (M03) and blast cap air hose (M04), plurality of taper cover board
(M03) it is successively set on supporting rack (M01), hood top cover (M02) is arranged on the top of top taper cover board (M03), wind
Pipe (M04) is arranged on the lower section of supporting rack (M01) and is connect with supporting rack (M01)；Preferably, the hood top cover
(M02) it is pyramidal structure.
9. a kind of vertical cooling machine according to claim 8, it is characterised in that：The neighbouring taper cover board
(M03) gas channel is formed between；And/or
The cone angle of the hood top cover (M02) is more than the cone angle of taper cover board (M03).
10. a kind of vertical cooling machine according to any one of claim 1-9, it is characterised in that：Discharge apparatus (P) is shakes
Dynamic batcher；It is preferred that discharge apparatus (P) is double-deck oscillating feeder, the bilayer oscillating feeder including body rack (P01),
Upper strata vibra shoot (P02), lower floor's vibra shoot (P03), vibrator (P04)；Upper strata vibra shoot (P02) and lower floor's vibra shoot (P03)
It is arranged on body rack (P01), upper strata vibra shoot (P02) is positioned at the top of lower floor's vibra shoot (P03), upper strata vibra shoot
(P02) it is connect respectively with vibrator (P04) with lower floor's vibra shoot (P03)；Preferably, upper strata vibra shoot (P02) and/or lower floor
Vibra shoot (P03) is equipped with regulating device (P05), and regulating device (P05) adjusts the bottom plate inclination angle of lower floor's vibra shoot (P03).
11. a kind of vertical cooling machine according to claim 10, it is characterised in that：Vibrator (P04) is vibrated including upper strata
Device (P0401) and lower floor's vibrator (P0402), upper strata vibrator (P0401) are connect with upper strata vibra shoot (P02), lower floor's vibration
Device (P0402) is connect with lower floor vibra shoot (P03)；Preferably, upper strata vibra shoot (P02) and lower floor's vibra shoot (P03) pass through
Spring is arranged on body rack (P01).
12. a kind of vertical cooling machine according to any one of claim 1-11, it is characterised in that：The vertical cooling machine
(A1) control system (K), control system (K) and vane air supply device (6), blast cap air supply device (7), temperature probe are further included
(9), regulating rod (10), cold sinter transport device (11), discharge apparatus (P) connection, and control vane air supply device (6), wind
The operation of cap air supply device (7), temperature probe (9), regulating rod (10), cold sinter transport device (11), discharge apparatus (P).
13. a kind of sinter cooling means or a kind of vertical cooling machine described in using any one of claim 1-12 cool down
The method of sinter, this method include the following steps：
(1) sinter enters in the feed bin (1) of vertical cooling machine (A1), under gravity continuous flowing from top to bottom, warp
By cloth tube (2), it is deposited in the tower body of cooler；
(2) the vane air supply device (6) of vertical cooling machine (A1) and blast cap air supply device (7) convey respectively cooling gas (such as
Air) by vane (H) and blast cap (M) into tower body, cooling gas passes through the sinter being deposited in tower body from bottom to top
The bed of material, and countercurrent heat exchange is carried out with sinter, heat exchange postcooling gas temperature gradually rises, through vertical cooling machine (A1) tower
Interior sinter charge level discharge, forms high-temperature hot-air, and high-temperature hot-air is discharged through hot-blast outlet (8)；Preferably, high-temperature hot-air is defeated
It is sent in afterheat utilizing system；
(3) sinter in the tower body of cooler and cooling gas from bottom to top are deposited in and carries out countercurrent heat exchange and cold
But, it enters in the discharge cone bucket (5) of vertical cooling machine (A1) lower part, then (such as is discharged to cold by discharge apparatus (P) discharge
On sinter conveyer (11)).
14. according to the method for claim 13, wherein according to the temperature that temperature probe (9) is detected, control system (K) control
Vane air supply device (6) processed, blast cap air supply device (7), regulating rod (10), cold sinter transport device (11), discharge apparatus (P)
Operation.
15. the method according to claim 13 or 14, wherein setting temperature probe corresponding with each discharge cone bucket (5)
(9), the temperature detected according to each temperature probe (9), control system (K) control the behaviour of corresponding discharge apparatus (P)
Make.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360845A (en) * | 2019-07-10 | 2019-10-22 | 钢铁研究总院 | Ventilation terminal system and gas-solid heat exchange method used in a kind of gas-solid heat exchange process |
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