CN106435068A - Blast furnace molten slag dry method treatment device based on high-temperature slag waste heat recovery - Google Patents
Blast furnace molten slag dry method treatment device based on high-temperature slag waste heat recovery Download PDFInfo
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- CN106435068A CN106435068A CN201611072767.0A CN201611072767A CN106435068A CN 106435068 A CN106435068 A CN 106435068A CN 201611072767 A CN201611072767 A CN 201611072767A CN 106435068 A CN106435068 A CN 106435068A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention discloses a blast furnace molten slag dry method treatment device based on high-temperature slag waste heat recovery. The blast furnace molten slag dry method treatment device comprises a furnace slag treatment box and a cooling unit, wherein blast furnace slag falls from the top of the furnace slag treatment box; and the cooling unit comprises a mechanism used for forming water columns in the furnace slag treatment box to impact and cool the fallen blast furnace slag. The cooling unit comprises spray nozzles. The spray nozzles comprise a plurality of layers of water column spray nozzle bodies used for spraying out the water columns. The multiple layers of water column spray nozzle bodies are arranged on the two opposite side faces of the inside of the furnace slag treatment box up and down in a staggered mode, so that the blast furnace slag falling in the corresponding positions can fall in a Z-shaped path. The blast furnace molten slag dry method treatment device based on high-temperature slag waste heat recovery is relatively simplified, water consumption is reduced, and particularly, solid-state furnace slag particles maintained in a high-temperature state can be provided; and the temperature of the furnace slag particles are controllable, so that a high-quality heat source is provided for waste heat recovery.
Description
Technical field
The present invention relates to the blast furnace slag processing equipment in iron and steel metallurgical industry, more particularly, it relates to a kind of be based on high temperature
The blast furnace cinder dry processing device of slag waste heat recovery, the more particularly to process of liquid blast furnace.
Background technology
While molten iron is produced, the substantial amounts of liquid blast furnace of blast furnace also output.Liquid blast furnace tapping temperature is 1400
～1500 DEG C, contain very high heat energy, the heat that liquid blast furnace per ton contains is equivalent to about the heat contained by 64kg standard coal
Amount, belongs to high-grade residual heat resources, is worth with very high recycling.While blast furnace slag is a kind of silicic acid of good performance
Salt material, can be used as production construction material and the raw material of chemical fertilizer.Blast furnace slag after quenching has the gelling of potential hydraulic
Performance, is excellent cement raw material, and therefore each research and development institution falls over each other for blast furnace on the basis of forefathers' experience is used for reference both at home and abroad
The recycling of the Exposure degree of slag and its slag launches research.Existing water-quenched blast-furnace slag technique, can form low-quality in a large number
Warm water and saturated vapor, but be difficult be recycled, and wherein about 15% washing slag water can evaporation endothermic become vapor
And diffuse, the waste of energy and water resource is not only caused, while in vapor, contain a large amount of harmful substances, severe contamination ring
Border.Therefore the new recovery method of research blast furnace slag becomes a recent studies on problem in the field, at present, all carries out both at home and abroad
The research, and rotary-cup type slagging technique, drum-type slagging technique, injection scattering technique and steel ball slagging technique is devised,
Specific as follows.
Rotary-cup type slagging technique：Liquid blast furnace enters the swirling eddy pelletizer positioned at center by note slag pipe flow, in rotation
The edge of revolving cup, liquid slag throws away granulation under the influence of centrifugal force, is simultaneously introduced annular air and penetrates around the side of rotating cup
Stream, makes liquid slag thin film produce unstable fluctuation, to promote the broken of liquid slag.High temperature slag particle clashes into inwall, cold with outer wall
But in water pipe, cooling water carries out heat exchange, and grain slag is rebounded to primary fluid bed, and fluidization air and is embedded in an in the layer and changes
Hot channel carries out heat exchange, about reclaims 43% heat.Subsequently, slag particle is spilled in secondary streams bed, about reclaims 20% heat.Most
Afterwards, slag is discharged by ash pit, and hot air outlet temperature reaches 400～600 DEG C, is entered residual neat recovering system and is used.Should
The advantage of technique is that slag particle rate of cooling is fast, and in granulation, glass is mutually more than 90%；Have the disadvantage that technique reclaimer is more complicated, water-cooled
Slag is easily stained with by wall, and air consumption causes greatly power consumption big.
Drum-type slagging technique：Rolling-cylinder type slag-cooler is by the cylinder that conducts heat, slag feeding device, deslagging device, rotating mechanism, cooling
Water system and control device etc. constitute.The inside and outside steel cylinder that it is not waited by two diameters is set in together, and constitutes the water ring of closing
Shape cavity, welds spiral blade in inner core inwall, and gather between helical blade longitudinal blade.Under the rotation of cylinder, boiler
Deslagging is flowed in the groove that helical blade is formed, and along cylinder axis direction to slag cooler outlet movement.The advantage of the technique
It is easy for installation, easy to operate, reliability height not tight to slag granularity requirements, equipment manufacturing cost is low, and operation power consumption is low；Have the disadvantage long-term
Operation is susceptible to swivel joint axial dipole field, and spiral fin (flow deflector) is fragile, and amount of slag and tapping temperature sometimes can not
Design load is reached, the easy leak of swivel joint.
Injection scattering technique：Nippon establishes the factory for exclusively carrying out blast furnace slag heat recovery, and liquid slag is fallen
Enter in the slag runner of inclination, slag runner divides into aerator, connect with the high-speed air flow of aerator blowout when melt cinder is flowed out from slag runner end
Be granulated rapidly after touch and be blown in heat exchanger, slag is rapidly condensed into solid-state from liquid in running, by radiation and right
Stream carries out heat exchange, and slag temperature drops to 1000 DEG C from 1500 DEG C.After slag is cooled to 300 DEG C or so in heat exchanger, by transmission
Band is sent in storage slag chute.The advantage of the technique is that heat recovery rate height (40～45%), various performance parameters are all good than flush slag；Lack
Point is that air quantity is big, power consumption big, the particle diameter distribution wider range for the grain slag that injection scattering is obtained, and is unfavorable for follow-up place
Reason.
Steel ball slagging technique：Russian document number RU2018494 patent discloses one kind《Slag treatment method and enforcement dress
Put》, the method be by the cylinder of liquid slag injection device, when slag is contacted with the steel ball being placed in cylinder by chilling,
Slag changes into crisp shape mouldable state by liquid and is set in spherome surface, and due to the motion of spheroid and impinging one another, slag is broken
Become 700 DEG C or so granular solid slag, solid slag is delivered continuously in gas slag heat exchanger and heat exchange is carried out with recyclegas.
The blast furnace slag of melting is then entered between 2 rotary drums by NKK company by pipeline, rotary drum continuous rotation slag is extruded to be formed one layer thin
Slag piece, is passed through exchanging gas cooling slag in rotary drum, hot gas is reclaimed for generating electricity, heating.The advantage of the technique is cooling speed
Degree is fast, and slagging speed is fast；Have the disadvantage that processing step is complicated, fault rate is high, high cost, cylinder is easy to wear, high temperature deformation.
Above-mentioned four kinds of blast furnace residues processing techniques comparative maturity, but with respect to traditional water-quenched blast-furnace slag technique, its work
Skill process is still more complicated, and equipment cost and operating cost are higher.Have pointed out at the blast furnace slag of relative simplicity in prior art
Science and engineering skill, such as patent publication No.：101429578 A of CN, publication date：On 05 13rd, 2009, invention and created name was：High
The processing method of titanium desulfurized furnace cinder, this application case discloses a kind of high-titanium desulfurized furnace cinder for reducing flue dust yield
Processing method, specially：Using three-dimensional water curtain, high-titanium desulfurized furnace cinder is sprayed；This application case high-titanium desulfurized
The fume amount of high-titanium desulfurized furnace cinder can be reduced by more than 50% by the processing method of blast furnace slag, no explode existing during spray
As occurring, safe operation is protected.But the shortcoming of this application case is：It is difficult to reclaim generation in blast furnace slag processing procedure
Solid-state slag high-quality thermal source, steam, and water consumption is larger.
In sum, how to design at a kind of blast furnace slag processing equipment of relative simplicity, and energy efficient recovery blast furnace slag
The solid-state slag high-quality thermal source of generation, steam during reason, reduce water consume, are that the technology of urgent need to resolve in prior art is asked
Topic.
Content of the invention
1. invention technical problem to be solved
It is an object of the invention to overcoming solid-state slag high-quality thermal source, steam in existing blast furnace residues processing technique to be difficult to back
A kind of deficiency that receipts are utilized, water consumption is larger, there is provided the blast furnace slag processing equipment of relative simplicity, and can efficient recovery blast furnace slag
The solid-state slag high-quality thermal source of generation, steam in processing procedure, reduce water consume.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention is provided is：
The blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present invention, including：
Slag treatment case, blast furnace slag is fallen into from the slag treatment box top, is discharged by the slag treatment bottom portion；
Cooling unit, the cooling unit includes to be internally formed water column come the blast furnace slag to falling in the slag treatment case
Carry out the mechanism for impacting, cooling down.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention, also
Including jet chimney；
The wall of the slag treatment case is the cooling water sandwich of internal filling cooling water, jet chimney and slag treatment case
Inside connection.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
The cooling unit includes shower nozzle, and the shower nozzle includes the water column shower nozzle for spraying effluent column；At the slag
Upper and lower interlaced arrangement number layer water column shower nozzle on two relative sides in reason case so that the blast furnace slag edge that relevant position falls
"the" shape route falls.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
The shower nozzle also includes the waterfog head for ejecting atomized water, and the waterfog head is arranged at slag treatment case
Lower section on interior side and positioned at the water column shower nozzle.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
The axis of each water column shower nozzle is identical with the angle of horizontal plane；Two relative sides are located in the slag treatment case
On face and upper and lower adjacent two-layer water column shower nozzle, the direction of its shower is relative.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
The axis of each water column shower nozzle is 0～30 ° with the angle of horizontal plane, and the water column pressure that water column shower nozzle sprays is 0.2
～2.0MPa.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
Each shower nozzle is connected with mono- road cooling water of distributor box Shang respectively by water pipe, and distributor box is used for being passed through water pump
Cooling water be divided into multichannel；
The top of the slag treatment case is provided with lets out slag chute, the bottom of the slag treatment case be in funnelform opening,
The lower section of the opening is provided with conveyer belt.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
The bottom of the cooling water sandwich is connected with water compensation mechanism, is provided with level measuring mechanism and water temperature in cooling water sandwich
Measuring mechanism, cooling water sandwich top is connected with steam collection pipe.
Further being improved based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery as the present invention,
Water column shower nozzle section vertically be the tapered horn-like passage in outlet aperture or for outlet aperture be less than into
The stepped passage in oral pore footpath.
3. beneficial effect
The technical scheme for being provided using the present invention, compared with prior art, with following remarkable result：
(1) the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present invention, global design is integrated, section
Huas and apparatus structure is relatively easy, operational process is easy to safeguard, operating cost and device fabrication cost are relatively low, slag treatment case
Surround the low temperature environment of opposing seal, blast furnace slag in the slag treatment case flowing, in cooling procedure, using with certain rigidity
Water jets under high pressure, become the atomized water of spray form that blast furnace slag is cut, smashed, and glass phase little particle is quickly cooled to, while passing through
The a large amount of steams for producing in blast furnace slag processing procedure are recycled by the jet chimney for being connected with slag treatment case, wherein,
The design of waterfog head, water column shower nozzle and cooling water sandwich greatly reduces the consumption of cooling water.
(2), in the present invention, it is located in slag treatment case on two relative sides and upper and lower adjacent two-layer water column spray
Head, the direction of its shower is relative, and on the one hand such structure design advantageously forms relative two-layer cascade to tie up
The "the" shape glide path of blast furnace slag is held, and on the other hand the jet face of relevant position water column can be caused as far as possible parallel to herein
The flow direction of blast furnace slag, to increase impact and cooling effect to blast furnace slag, reduces water consumption.
(3) the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present invention, can be by adjusting all kinds of sprays
Head intensity of cooling come control slag treatment bottom portion discharge slag granules temperature, and then for waste heat boiler provide difference product
The thermal source of matter, it is particularly possible to the solid-state slag granules for keeping the condition of high temperature, and slag granules temperature-controllable are provided, and are returned for waste heat
Receiving and high-quality thermal source is provided, 64kg standard coal is about converted into through calculating liquid blast furnace heat per ton, is based on high temperature using this
The blast furnace cinder dry processing device of slag waste heat recovery newly can be about 13kw.h/ ton slag by increment life insurance, and economic effect is greatly improved
Benefit.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structural representation of the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of embodiment 1～4
Figure；
Fig. 2 is water column shower nozzle cross section structure diagram vertically in embodiment 5；
Fig. 3 is water column shower nozzle cross section structure diagram vertically in embodiment 5；
Fig. 4 is the flow chart of the blast furnace cinder dry processing method based on high temperature sludge waste heat recovery of embodiment 7.
Label declaration in schematic diagram：
1st, slag chute is let out；2nd, slag treatment case；201st, cooling water sandwich；3rd, water pipe；4th, distributor box；5th, shower nozzle；6th, water pump；7、
Conveyer belt；8th, jet chimney；9th, slag granules.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention is clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Therefore, embodiments of the invention below to providing in the accompanying drawings
Detailed description be not intended to limit the scope of claimed invention, but be merely representative of the selected embodiment of the present invention.
Based on the embodiment in the present invention, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.
Existing water-quenched blast-furnace slag technique, can form inferior warm water and saturated vapor in a large number, but be difficult to be recovered profit
With, and wherein about 15% washing slag water can evaporation endothermic become vapor and diffuse, not only cause energy and water resource
Waste, while in vapor contain a large amount of harmful substances, serious environment pollution.Therefore the new recovery method of blast furnace slag is studied
Become a recent studies on problem in the field, at present, all carried out the research both at home and abroad, and devised rotary-cup type slagging work
Skill, drum-type slagging technique, injection scattering technique and steel ball slagging technique.Although above-mentioned four kinds of blast furnace residues processing techniques than
More ripe, but with respect to traditional water-quenched blast-furnace slag technique, its technical process is still more complicated, equipment cost and operating cost
Higher.Therefore, how to design in a kind of blast furnace slag processing equipment of relative simplicity, and energy efficient recovery blast furnace slag processing procedure
The solid-state slag high-quality thermal source of generation, steam, reduce water consume, are the technical problems of urgent need to resolve in prior art.
For further appreciating that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1, the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, including：Slag
Treatment box 2, blast furnace slag is fallen into from 2 top of slag treatment case, is discharged by 2 bottom of slag treatment case；Cooling unit, cooling unit bag
Including the water column for being internally formed high pressure in slag treatment case 2 carries out, come the blast furnace slag to falling, the mechanism for impacting, cooling down.(this enforcement
The blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of example, " blast furnace cinder " refers to the liquid blast furnace that discharges from blast furnace
Slag, " dry process " refers to liquid blast furnace final process is become the slag granules 9 of moisture content less, and the slag granules 9 are in solid
Graininess)
In the present embodiment, blast furnace slag top-down whereabouts in the slag treatment case 2, be conducive to blast furnace slag abundant in the air
Spread out, meanwhile, blast furnace slag is smashed by water jets under high pressure in dropping process, is cooled down, through for several times collision cooling, in slag
2 bottom for the treatment of box is processed into satisfactory slag granules 9.
Embodiment 2
In conjunction with Fig. 1, the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, its structure and reality
Apply example 1 essentially identical, further：
The present embodiment jet chimney 8, stove are also included based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery
The wall of Slag treatment case 2 is the 201 (design of cooling water sandwich 201, it is ensured that blast furnace of cooling water sandwich of internal filling cooling water
Flow in the low temperature environment that slag is surrounded in slag treatment case 2, improve the cooling effectiveness of blast furnace slag), jet chimney 8 and slag
The inside connection for the treatment of box 2.The top of slag treatment case 2 is provided with lets out slag chute 1, and pending liquid blast furnace is from letting out in slag chute 1
Flow out in slag treatment case 2, the bottom of slag treatment case 2 is that funnelform open design has in funnelform opening
Smoothly discharge from 2 bottom of slag treatment case beneficial to the slag granules 9 after processing and pressed from both sides by the cooling water of 2 bottom of slag treatment case
Layer 201 is cooled down, and then delivers to Waste Heat Generation, 7 institute of conveyer belt by the conveyer belt 7 below 2 bottom opening of slag treatment case
Material requirements can bear more than 800 DEG C of temperature.
In the present embodiment, the wall of slag treatment case 2 is the cooling water sandwich 201 of internal filling cooling water, guarantees completely
2 wall surface temperature of slag treatment case remains at less than 500 DEG C, prevents the blast furnace slag to be bonded in 2 inner surface of slag treatment case；Cold
But the clean steam that process is produced is recycled by the jet chimney 8 of 2 bottom of slag treatment case connection, and jet chimney 8 is arranged
In 2 bottom of slag treatment case, convenient installation.
Cooling unit includes shower nozzle 5, and shower nozzle 5 is included for spraying the water column shower nozzle of effluent column and for ejecting atomized water
Waterfog head；Upper and lower interlaced arrangement number layer water column shower nozzle on relative two sides in slag treatment case 2, per layer of water column spray
Head can arrange 1～2 drainage column shower nozzle so that the blast furnace slag that relevant position falls falls along "the" shape route.This enforcement concrete
In example, the height of slag treatment case 2 between 1500～4500mm, 2 cross section of slag treatment case can be equivalent diameter 500～
3000mm's is square or circular.On same drainage column shower nozzle, the spacing of two neighboring water column shower nozzle is 1～3mm, each drainage column
The quantity of shower nozzle can be according to actual production accommodation；It is located in slag treatment case 2 on two relative sides and upper and lower phase
The distance between adjacent two-layer water column shower nozzle is 200～1000mm.Waterfog head be arranged on the side in slag treatment case 2 and
Lower section positioned at water column shower nozzle.In concrete the present embodiment, top of the water column nozzle layout of sprinkler in slag treatment case 2, apart from slag
2 100～500mm of top for the treatment of box, waterfog head is arranged in the bottom in slag treatment case 2.Each shower nozzle 5 passes through 3 points of water pipe
It is not connected with 4 Shang of distributor box, mono- road cooling water, the cooling water that distributor box 4 is used for being passed through water pump 6 is divided into multichannel, that is, cool down
Water is sent to distributor box 4 after the pressurization of water pump 6, is then distributed to all kinds of shower nozzles by distributor box 4, and all kinds of shower nozzles all configure phase
The valve that answers, can be maintained between 100～800 DEG C with 9 temperature of slag granules after control process, reclaim the Gao Pin of solid-state slag
Matter heat, and then the thermal source of different qualities is provided for waste heat boiler, in actual applications can be according to furnace processor and cooling effect
Fruit flexible shower nozzle parameter.Nozzle layout of sprinkler mode is relevant with blast furnace slag cooldown rate, when blast furnace slag flows through water jets under high pressure region,
Quickly cooling is required to glass phase temperature range, in atomization aqua region afterwards, it is desirable to adjust blast furnace slag thermograde, it is ensured that blast furnace slag
Will not be bondd in bulk, whether reasonable can judge nozzle layout of sprinkler mode according to above 2 points in actual production.
In the present embodiment, blast furnace slag sequentially passes through the chilling stage of water jets under high pressure and the slow cooling stage of atomized water, takes into account
The later use of blast furnace slag and waste heat recovery efficiency.Concrete analysis is as follows：(1) in order to increase blast furnace slag in slag treatment case 2
Intensity of cooling, extend its time of staying, upper and lower staggered on relative in slag treatment case 2 two sides in the present embodiment
Several layers of water column shower nozzle of arrangement, the blast furnace slag of flowing is cut by water jets under high pressure layer by layer, changes blast furnace slag by the momentum of water jets under high pressure
Flow direction so that the blast furnace slag that relevant position falls along "the" shape route fall (i.e. the movement locus of blast furnace slag are edge
Longitudinal movement of falling object and transversely fold return motion compound).It should be noted that causing blast furnace slag edge in the present embodiment
It is its key point that "the" shape route falls, and blast furnace slag substantially increases blast furnace slag in the air along "the" shape path flows
The time of staying and the contact area with water jets under high pressure, the water jets under high pressure for only being formed with a small amount of cooling water can be by high-temperature fusion
Blast furnace slag carry out cutting, smash, and cause blast furnace slag quickly cool down (being cooled to less than 800 DEG C) fragmentation to satisfactory glass
Glass phase little particle (ensure that into the content of vitreous body in solid impurity particle more than traditional Water Quenching Slag, improve into the glass phase of solid impurity particle
The close property of intensity, matter), cooling water consumption is greatlyd save, the product quality of slag granules 9 after processing is improved, has taken into account height
The later use of slag.(2) in the slow cooling stage of atomized water, blast furnace slag passes through the quenching of water jets under high pressure, becomes little
The slag granules 9 of granule, and fully dispersed in slag treatment case 2 come, be conducive to slag granules 9 to be fully contacted with air and change
Heat, while atomized water is fully sprayed at the bottom of slag treatment case 2 so that the heat (slag granules 9 inside slag treatment case 2
And the heat of in the air) be all atomized substantially water and absorbed, it is broken up into after another aspect water jets under high pressure impact blast furnace slag thin
Little globule granule, globule granule also falls within 2 lower absorbent heat of slag treatment case, after atomized water and the heat absorption of globule granule
Vapor is all evaporated to, wherein almost all of vapor is all reclaimed by jet chimney 8, blast furnace Slag treatment mistake is greatly improved
Utilization rate of waste heat in journey, is conducive to iron and steel enterprise's energy-saving and emission-reduction；Meanwhile, the cooling used by chilling stage and slow cooling stage is water base
This all recycles as water vapor, greatly reduces the wastewater discharge after being polluted by blast furnace slag, can save substantially useless
Water process link；Further, chilling stage and the cooling water used by the slow cooling stage are reduced with respect to traditional water quenching technology
About 50% water consume.(traditional blast furnace pulp water extraction technique, blast furnace slag extracts through water, after being broken into graininess, final process
Becoming moisture height in solid impurity particle, need to processing through sedimentation tank, cement plant is then sent to as the raw material of cement, this process is wasted
Substantial amounts of water resource, blast furnace slag per ton needs 6 tons or so of recirculated water, while the purification of waste water difficulty for being formed is larger, produces
Steam be difficult collect.)
The blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, global design is integrated, section
Huas and apparatus structure is relatively easy, operational process is easy to safeguard, operating cost and device fabrication cost are relatively low, slag treatment case
2 low temperature environments for surrounding opposing seal, blast furnace slag in the slag treatment case 2 flowing, in cooling procedure, using with certain rigidity
Water jets under high pressure, become the atomized water of spray form that blast furnace slag is cut, smashed, and be quickly cooled to glass phase little particle, while logical
Cross the jet chimney 8 for connecting with slag treatment case 2 to recycle a large amount of steams for producing in blast furnace slag processing procedure, its
In, the design of waterfog head, water column shower nozzle and cooling water sandwich 201 greatly reduces the consumption of cooling water.
It should be noted that the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, can lead to
Overregulate the intensity of cooling of all kinds of shower nozzles to control the temperature of slag granules 9 (solid-state slag) that 5 bottom of slag treatment case is discharged
(100～800 DEG C), and then the thermal source of different qualities is provided (it should be noted that most of in liquid blast furnace for waste heat boiler
Heat be all retained in slag granules 9, by the recycling to slag granules 9, liquid blast furnace can be greatly improved
Heat recovery efficiency), 64kg standard coal being about converted into through calculating liquid blast furnace heat per ton, is based on high temperature sludge waste heat using this
The blast furnace cinder dry processing device of recovery newly can be about 13 kilowatt hours/ton slag by increment life insurance, and economic benefit is greatly improved.
Embodiment 3
In conjunction with Fig. 1, the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, its structure and reality
Apply example 2 essentially identical, further：The axis of each water column shower nozzle is identical with the angle of horizontal plane, in concrete the present embodiment,
The axis of each water column shower nozzle is 0～30 ° with the angle of horizontal plane, it should be noted that the axis of water column shower nozzle and horizontal plane
Angle excessive be unfavorable for blast furnace slag formed take 30 ° along "the" shape route, concrete the present embodiment；The water that water column shower nozzle sprays
Column pressure is 0.2～2.0MPa, the too small effect for not reaching impact blast furnace slag of water column pressure, and the excessive then water column of water column pressure is complete
Penetrate blast furnace slag so that blast furnace slag cannot take 2.0MPa along "the" shape path flows, concrete the present embodiment.Slag treatment case
It is located in 2 on two relative sides and upper and lower adjacent two-layer water column shower nozzle, the direction of its shower is relative.
In the present embodiment, it is located in slag treatment case 2 on two relative sides and upper and lower adjacent two-layer water column spray
Head, the direction of its shower be relative (in concrete the present embodiment equivalent to wherein one layer water column shower nozzle with the horizontal
30 ° of angles shower downwards, another layer of water column shower nozzle is with the horizontal 30 ° of angles shower upward), such
On the one hand structure design advantageously forms relative two-layer cascade to maintain the "the" shape glide path of blast furnace slag, on the other hand
The jet face of relevant position water column can be caused as far as possible parallel to the flow direction of blast furnace slag herein, with increasing, blast furnace slag is rushed
Hit and cooling effect, reduce water consumption.
Embodiment 4
In conjunction with Fig. 1, the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, its structure and reality
Apply example 3 essentially identical, further：The bottom of cooling water sandwich 201 is connected with water compensation mechanism, is set in cooling water sandwich 201
There are level measuring mechanism and temperature measurement mechanism, 201 top of cooling water sandwich is connected with steam collection pipe.
In the present embodiment, the water in cooling water sandwich 201 is measured respectively by level measuring mechanism and temperature measurement mechanism
Position and water temperature, carry out moisturizing by water compensation mechanism to cooling water sandwich 201, so that it is guaranteed that the wall of slag treatment case 2 is maintained
Within the temperature range of regulation, after the cooling water in cooling water sandwich 201 is heated evaporation, can be pushed up by cooling water sandwich 201
The steam collection pipe in portion is recycled.
Embodiment 5
In conjunction with Fig. 2, the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, its structure and reality
Apply example 4 essentially identical, further：Water column shower nozzle section vertically is the tapered horn-like passage in outlet aperture.
To guarantee in the present embodiment that the water column that water column shower nozzle sprays is rigidly big, in concrete the present embodiment, water column shower nozzle edge
The section of axial direction is the tapered horn-like passage in outlet aperture, the design of horn-like passage so that high-pressure cooling water is passing through water
After post shower nozzle, pressurized further, it is ensured that water column shower nozzle sprays satisfactory water jets under high pressure.
In conjunction with Fig. 3, in the present embodiment, water column shower nozzle is also designed to another kind of structure：Water column shower nozzle section vertically
The stepped passage of entrance hole diameter is less than for outlet aperture.High-pressure cooling water when being sprayed by stepped passage, one side rank
Part is directly sprayed scalariform passage inner high voltage bringing down leg center flow velocity faster, is conducive to reinforcing to spray water column for blast furnace
The quenching effect of slag；On the other hand, when the stepped passage that high-pressure cooling water is less than entrance hole diameter through outlet aperture flows out, rank
The part at scalariform passage inner high voltage bringing down leg edge is directly stopped, produces the phenomenon similar to " self-control air bubble " so that
The water column of ejection keeps great rigidity (allowing the water column of ejection be difficult to spread out), it is ensured that impact of the water column to blast furnace slag
Effect.
Embodiment 6
The blast furnace cinder dry processing device based on high temperature sludge waste heat recovery of the present embodiment, its structure and 3 base of embodiment
This is identical, and its difference is：The axis of each water column shower nozzle is 0 ° with the angle of horizontal plane, the water column that water column shower nozzle sprays
Pressure is 0.2MPa.
Embodiment 7
In conjunction with Fig. 4, the blast furnace cinder dry processing method based on high temperature sludge waste heat recovery of the present embodiment, which is to adopt such as
Being carried out based on the blast furnace cinder dry processing device of high temperature sludge waste heat recovery described in embodiment 5, is comprised the following steps that：
Step one：First-selection gets out blast furnace cinder dry process as described in Example 5 based on high temperature sludge waste heat recovery
Device；Then fall into top-down for pending blast furnace slag in slag treatment case 2；
Step 2：Blast furnace slag first passes through water column in dropping process in slag treatment case 2 and which is carried out impacting, is cooled down, so
By atomized water, which is cooled down afterwards；
Step 3：Blast furnace slag after process is discharged from 2 bottom of slag treatment case, and the steam for being formed in slag treatment case 2 leads to
Cross jet chimney 8 and drain recycling.
Schematically the present invention and embodiments thereof are described above, the description does not have restricted, institute in accompanying drawing
Shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by which, in the case of without departing from the invention objective, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of blast furnace cinder dry processing device based on high temperature sludge waste heat recovery, it is characterised in that include：
Slag treatment case (2), blast furnace slag is fallen into from slag treatment case (2) top, is arranged by slag treatment case (2) bottom
Go out；
Cooling unit, the cooling unit includes to be internally formed water column come the blast furnace slag to falling in slag treatment case (2)
Carry out the mechanism for impacting, cooling down.
2. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 1, it is characterised in that：
Also include jet chimney (8)；
The wall of slag treatment case (2) is the cooling water sandwich (201) of internal filling cooling water, jet chimney (8) and stove
The inside connection of Slag treatment case (2).
3. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 2, it is characterised in that：
The cooling unit includes shower nozzle (5), and shower nozzle (5) include the water column shower nozzle for spraying effluent column；The slag
Upper and lower interlaced arrangement number layer water column shower nozzle on relative two sides in treatment box (2) so that the blast furnace slag that relevant position falls
Fall along "the" shape route.
4. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 3, it is characterised in that：
Shower nozzle (5) also include the waterfog head for ejecting atomized water, and the waterfog head is arranged at slag treatment case
(2) lower section on the side in and positioned at the water column shower nozzle.
5. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 4, it is characterised in that：
The axis of each water column shower nozzle is identical with the angle of horizontal plane；Two relative sides are located in slag treatment case (2)
On face and upper and lower adjacent two-layer water column shower nozzle, the direction of its shower is relative.
6. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 4, it is characterised in that：
The axis of each water column shower nozzle is 0～30 ° with the angle of horizontal plane, water column shower nozzle spray water column pressure be 0.2～
2.0MPa.
7. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 4, it is characterised in that：
Each shower nozzle (5) is connected with mono- road cooling water of distributor box (4) Shang respectively by water pipe (3), and distributor box (4) is used for will
The cooling water that water pump (6) is passed through is divided into multichannel；
The top of slag treatment case (2) is provided with lets out slag chute (1), the bottom of slag treatment case (2) be in funnelform
Opening, the lower section of the opening is provided with conveyer belt (7).
8. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 5, it is characterised in that：
The bottom of cooling water sandwich (201) is connected with water compensation mechanism, is provided with level measuring mechanism in cooling water sandwich (201)
With temperature measurement mechanism, cooling water sandwich (201) top is connected with steam collection pipe.
9. the blast furnace cinder dry processing device based on high temperature sludge waste heat recovery according to claim 5～8 any one,
It is characterized in that：
Water column shower nozzle section vertically is the tapered horn-like passage in outlet aperture or is less than ingate for outlet aperture
The stepped passage in footpath.
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| CN109721260A (en) * | 2019-01-03 | 2019-05-07 | 南京华电节能环保设备有限公司 | The slag cooling device and slag of a kind of plate-sheet-type flash cooler are quickly cooled down and curing method |
| CN111004878A (en) * | 2019-12-16 | 2020-04-14 | 北京天朗致达节能环保股份有限公司 | Pure device of electric stove sediment water |
| CN111102849A (en) * | 2019-12-30 | 2020-05-05 | 徐州振丰新型墙体材料有限公司 | Tunnel cave blast furnace slag waste heat power generation facility |
| CN113263040A (en) * | 2021-03-26 | 2021-08-17 | 童铨 | Low-carbon co-treatment process for solid waste |
| CN115198041A (en) * | 2022-07-08 | 2022-10-18 | 中国科学院力学研究所 | Particle size control system and method for centrifugal granulation and pulverization of rotary table and application |
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| CN115198041A (en) * | 2022-07-08 | 2022-10-18 | 中国科学院力学研究所 | Particle size control system and method for centrifugal granulation and pulverization of rotary table and application |
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| CN106435068B (en) | 2018-11-06 |
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