CN107841582A - The blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery - Google Patents
The blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery Download PDFInfo
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- CN107841582A CN107841582A CN201711200878.XA CN201711200878A CN107841582A CN 107841582 A CN107841582 A CN 107841582A CN 201711200878 A CN201711200878 A CN 201711200878A CN 107841582 A CN107841582 A CN 107841582A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/04—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
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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
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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
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
- Y02P10/25—Process efficiency
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- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses the blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery, the blast furnace residues processing technique field belonged in iron and steel metallurgical industry.The processing unit of the present invention, including：Cylinder, blast furnace slag fall into from the top of cylinder, discharged by cylinder body bottom；Eddy flow cooling unit, eddy flow cooling unit are used to impact the blast furnace slag fallen into cylinder so that close to the inwall of cylinder, helically wire declines blast furnace slag.The processing method of the present invention, comprises the following steps：Step 1：Blast furnace slag is fallen into cylinder；Step 2：Close to the inwall of cylinder, helically wire declines blast furnace slag；Step 3：After in tapered channels below blast furnace slag arrival cylinder, the helical guide groove set on tapered channels inwall continues helically wire decline；Step 4：Blast furnace slag after processing is discharged from tapered channels bottom, and the steam formed in processing procedure is drained at the top of cylinder.Present invention considerably reduces the consumption of cooling water inflow, effectively increases waste heat recovery efficiency.
Description
Technical field
The present invention relates to the blast furnace residues processing technique in iron and steel metallurgical industry, more specifically to a kind of waste heat recovery
Blast furnace slag eddy flow processing unit and processing method.
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 coals
Amount, belongs to high-grade residual heat resources, and there is very high recycling to be worth.Blast furnace slag is a kind of silicic acid of good performance simultaneously
Salt material, can be as production construction material and the raw material of chemical fertilizer.There is blast furnace slag after quenching potential hydraulic to be gelled
Performance, it is excellent cement raw material, therefore each research and development institution falls over each other to be directed to blast furnace on the basis of forefathers' experience is used for reference both at home and abroad
The recycling expansion research of the Exposure degree and its slag of slag.Existing water-quenched blast-furnace slag technique, it can be formed a large amount of low-quality
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 contain a large amount of harmful substances in vapor, seriously pollute ring
Border.Therefore the new recovery method of research blast furnace slag turns into a recent studies on problem in the field, at present, has carried 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 are devised,
It is specific as follows.
Rotary-cup type slagging technique：Liquid blast furnace is being revolved by noting the inflow of slag pipe positioned at the swirling eddy pelletizer at center
The edge of revolving cup, liquid slag throw away granulation under the influence of centrifugal force, and introducing annular air simultaneously around the side of rotating cup penetrates
Stream, liquid slag film is set to produce unstable fluctuation, to promote the broken of liquid slag.High temperature slag particle hits inwall, cold with outer wall
But cooling water carries out heat exchange in water pipe, and grain slag rebounds to primary fluid bed, with fluidization air and being embedded in changing in bed
Hot channel carries out heat exchange, about reclaims 43% heat.Then, slag particle is spilled in two level fluid bed, about reclaims 20% heat.Most
Afterwards, clinker is discharged by ash pit, and hot air outlet temperature is used up to 400~600 DEG C into residual neat recovering system.Should
The advantages of technique is that slag particle cooling velocity is fast, and glass is mutually more than 90% in granulation；Shortcoming is that technique reclaimer is more complicated, water cooling
Wall is easily stained with slag, and air consumption causes greatly power consumption big.
Drum-type slagging technique：Rolling-cylinder type slag-cooler is by heat transfer roller, slag feeding device, deslagging device, rotating mechanism, cooling
Water system and control device etc. form.The inside and outside steel cylinder that it is not waited by two diameters is set in together, and forms the water ring of closing
Shape cavity, spiral blade is welded in inner cylinder inwall, gather longitudinal blade between helical blade.Under the rotation of roller, boiler
Deslagging flows in the groove that helical blade is formed, and is moved along cylinder axis direction to slag cooler outlet.The advantages of technique
It is easy for installation, easy to operate, not tight to slag granularity requirements, reliability is high, and equipment manufacturing cost is low, and operation power consumption is low；Shortcoming is long-term
Operation easily rotates joint axial dipole field, and spiral fin (flow deflector) is fragile, and amount of slag and tapping temperature sometimes can not
Reach design load, the easy leak of swivel joint.
It is blown scattering technique：Nippon establishes the factory for exclusively carrying out blast furnace slag heat recovery, and liquid slag is fallen
Enter in inclined slag runner, slag runner divides into air blower, and high-speed air flow when melt cinder flows out from slag runner end with air blower blowout connects
Be granulated and be blown in heat exchanger rapidly after touch, slag is rapidly condensed into solid-state from liquid in the process of running, by radiation and it is 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, pass through transmission
Band is sent in storage slag chute.The advantages of technique is that heat recovery rate high (40~45%), various performance parameters are better than flush slag；Lack
Point is that air quantity is big, power consumption is big, the particle diameter distribution wider range for the grain slag that injection scattering obtains, is unfavorable for subsequently locating
Reason.
Steel ball slagging technique：Russian document number RU2018494 patents disclose one kind《Slag treatment method and implementation dress
Put》, this method be by the roller of liquid slag injection device, when clinker contacts with the steel ball being placed in roller by chilling,
Clinker 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, clinker is broken
The solid slag granular into 700 DEG C or so, solid slag are delivered continuously in gas slag heat exchanger and carry out heat exchange with recyclegas.
Between the blast furnace slag of melting is then entered 2 rotary drums by pipeline by NKK companies, rotary drum continuously rotate slag is extruded to be formed it is one layer thin
Slag piece, exchanging gas cooling slag is passed through in rotary drum, and hot gas is reclaimed for generating electricity, heating.The advantages of technique is cooling speed
Degree is fast, and slagging speed is fast；Shortcoming is that processing step is complicated, fault rate is high, cost is high, and roller is easy to wear, high temperature deformation.
Above-mentioned four kinds of blast furnace residues processing techniques comparative maturity, but relative to traditional water-quenched blast-furnace slag technique, its work
Skill process is still more complicated, and equipment manufacturing costs and operating cost are higher.The blast furnace of relative simplicity is had pointed out in the prior art
Residues processing technique, such as patent publication No.：The A of CN 101429578, publication date：On 05 13rd, 2009, invention and created name
For：The processing method of high-titanium desulfurized furnace cinder, this application case, which discloses, a kind of reduces the high-titanium desulfurized of flue dust yield
The processing method of blast furnace slag, it is specially：High-titanium desulfurized furnace cinder is sprayed using three-dimensional water curtain；The high titanium of this application case
The processing method of type desulfurized furnace cinder, can reduce the fume amount of high-titanium desulfurized furnace cinder more than 50%, nothing during spray
Explosion phenomenon occurs, and safe operation is protected.But the shortcomings that this application case, is：It is difficult to reclaim in blast furnace slag processing procedure
Caused high-quality thermal source, steam, and water consumption is larger.
Carried to effectively reclaim caused high-quality thermal source, steam, applicant of the present invention in blast furnace slag processing procedure
Go out corresponding blast furnace residues processing technique, specially patent publication No.：The A of CN 106435068, publication date：On 02 22nd, 2017,
Invention and created name is：A kind of blast furnace cinder dry processing device based on high temperature sludge waste heat recovery, this application case is disclosed to be located
Reason device includes：Slag treatment case, blast furnace slag are fallen into from slag treatment box top；Cooling unit, cooling unit are included in clinker
The mechanism that treatment box is internally formed water column to impact the blast furnace slag fallen, cool down.Cooling unit includes shower nozzle, shower nozzle bag
Include the water column shower nozzle for spraying effluent column；Upper and lower interlaced arrangement number layer water column on two relative sides in slag treatment case
Shower nozzle so that the blast furnace slag that relevant position is fallen falls along "the" shape route.This application case provides a kind of relative simplicity
Blast furnace cinder dry processing device based on high temperature sludge waste heat recovery, and can effectively reclaim caused steaming in blast furnace slag processing procedure
Gas.But the shortcomings that this application case, is：Water column is internally formed in slag treatment case to be impacted to the blast furnace slag fallen, cold
But, the cooling water inflow of consumption is relatively more, and waste heat recovery is relatively inefficient.
In summary, it is less how to design a kind of cooling water inflow consumption, at the of a relatively high blast furnace slag of waste heat recovery efficiency
Device and processing method are managed, is the technical problem of urgent need to resolve in the prior art.
The content of the invention
1. invention technical problems to be solved
It is an object of the invention to overcome existing blast furnace residues processing technique cooling water consumption relatively more, waste heat recovery effect
The relatively low deficiency of rate, there is provided the blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery, significantly reduce
The consumption of cooling water inflow, effectively increase waste heat recovery efficiency.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the invention is：
The blast furnace slag eddy flow processing unit of the waste heat recovery of the present invention, including：
Cylinder, blast furnace slag fall into from the top of the cylinder, discharged by the cylinder body bottom；
Eddy flow cooling unit, the eddy flow cooling unit are used to impact the blast furnace slag fallen into cylinder so that high
Close to the inwall of cylinder, helically wire declines clinker.
As further improvement of the present invention, the eddy flow cooling unit includes first jet, and the first jet is located at
Lower section at the top of cylinder, the blast furnace slag that the spout face of first jet is fallen from the top of the cylinder.
As further improvement of the present invention, the eddy flow cooling unit also includes several second nozzles, if described
A dry second nozzle is located at below first jet, and the axis and the outer surface of correspondence position cylinder of second nozzle spout are tangent.
As further improvement of the present invention, the first jet is water column nozzle, and the second nozzle sprays for water smoke
Mouth.
As further improvement of the present invention, it is tapered tapered logical from top to bottom that the bottom of the cylinder is connected with aperture
Road, helical guide groove is provided with the inwall of the tapered channels.
As further improvement of the present invention, the first jet includes jet pipe and expands fluid；
The jet pipe includes isometrical section and expansion segment, and described isometrical section is straight tube, and the expansion segment is aperture flaring
Increaser, described isometrical section connects with the less one end in expansion segment aperture；
The expansion fluid is arranged at isometrical intersegmental part, expands fluid provided with the through hole along isometrical segment length direction；
The expansion fluid is combined by the first semielliptical portion and the second semielliptical portion, the major axis in the first semielliptical portion and the
The short axle in two semielliptical portions coincides, and the major axis in the first semielliptical portion and isometrical section of length direction are perpendicular；Described the first half
Ellipsoid portion is close to direction where expansion segment.
As further improvement of the present invention, in addition to：Molten slag groove and introduction channel；The molten slag groove is located at cylinder top
The top in portion, the lower end of molten slag groove are connected with introduction channel, and the length direction of the introduction channel is equal with the length direction of cylinder
OK.
As further improvement of the present invention, in addition to：Steam chambers, the top of the cylinder and the steam above it
Chamber is connected, and steam chambers connect with jet chimney.
As further improvement of the present invention, in addition to：Installing plate and temperature measuring mechanism；The temperature measuring mechanism is used to detect
The temperature of the tapered channels top inner wall and bottom interior wall；The installing plate is arranged at the outer surface of cylinder；The cylinder
Outer surface and the outer surfaces of the tapered channels be provided with cooling water sandwich.
The blast furnace slag eddy flow processing method of the waste heat recovery of the present invention, comprises the following steps：
Step 1：Get out the blast furnace slag eddy flow processing unit of waste heat recovery first, allow pending blast furnace slag from upper and
Under fall into cylinder；
Step 2：Blast furnace slag is in cylinder dropping process, the water column impact, the cooling that are sprayed first by first jet so that
Close to the inwall of cylinder, helically wire declines blast furnace slag, then continues to impact by the water smoke that some second nozzles spray, cools down,
Blast furnace slag is maintained close to the cylinder inboard wall movement locus that helically wire declines；
Step 3：After blast furnace slag is reached in tapered channels below cylinder, the spiral that is set on tapered channels inwall
Guide groove continues helically wire and declined；
Step 4：Blast furnace slag after processing is discharged from tapered channels bottom, and the steam formed in processing procedure is from cylinder top
Drain in portion.
3. beneficial effect
Using technical scheme provided by the invention, compared with prior art, there is following remarkable result：
(1) in the application, blast furnace slag rotates along device inwall all the time to fall, and considerably increases connecing for clinker and cooling water
The time is touched, ensure that clinker there are enough intensities of cooling, so as to significantly reduce the consumption of cooling water inflow, effectively increase waste heat
Organic efficiency；Steam caused by processing is collected and is used through collection conduit, and the clinker after processing is arranged from tapered channels bottom
Go out, temperature control is sent into waste heat boiler at 700-1000 DEG C, through conveying device and carries out cogeneration；Filled using the processing of the present invention
Put and processing method, blast furnace slag cooldown rate is high, and amount of glassy phase is high in gained slag, improves the product quality of clinker, reduces
60%-80% washing slag water usage amount；And during slag treatment about 90% or so steam is reclaimed, reclaim blast furnace slag about
70% heat, the utilization rate of waste heat during slag treatment is greatly improved, returns the current period below half a year, be advantageous to steel
Industry energy conservation emission reduction.
(2) in the application, molten slag groove is located at the top at the top of cylinder, and molten slag groove is used to blast furnace slag being delivered at the top of cylinder
Top；The introduction channel lower end of molten slag groove is connected with introduction channel, the length direction of the introduction channel and the length direction of cylinder
It is parallel, the guide effect of introduction channel so that blast furnace slag is dropped in cylinder in vertical state, and the spout of first jet is just
To the blast furnace slag fallen from the top of cylinder, beaten so that water jets under high pressure beam is vertical all the time in the blast furnace vertically to fall
On slag, so as to which the momentum of water jets under high pressure beam is delivered on blast furnace slag to greatest extent, it is ensured that eddy flow of the blast furnace slag in cylinder
Intensity.
(3) in the application, the top of cylinder is connected with the steam chambers above it, and steam chambers connect with jet chimney
Logical, the steam discharged out of cylinder initially enters steam chambers, then drains along jet chimney, and steam chambers play steam storage
Effect that is long-pending and buffering, avoid a large amount of instant steams of discharge in cylinder disorderly into rear caused pipeline pressure in jet chimney
Disorderly.
(4) in the application, installing plate is arranged at the outer surface of cylinder, for being installed whole device, being placed on mounting bracket
On；Temperature measuring mechanism is used for the temperature for detecting tapered channels top inner wall and bottom interior wall, the temperature that can be fed back according to temperature measuring mechanism
Number of degrees value adjusts the cooling water flow of first jet and second nozzle accordingly, is ensureing the precursor of the enough intensities of cooling of clinker
Under, injection flow rate is reduced as far as possible；The outer surface of cylinder and the outer surface of tapered channels are provided with cooling water sandwich, cooling water sandwich
It can ensure that cylinder inboard wall and tapered channels inner wall temperature are maintained at less than 500 DEG C, prevent cylinder and tapered channels due to height
Temperature and deform, while the radiant heat of blast furnace slag can be absorbed.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
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 main structure diagram of the blast furnace slag eddy flow processing unit of embodiment 1-5 waste heat recovery；
Fig. 2 is the overlooking the structure diagram of the blast furnace slag eddy flow processing unit of embodiment 1-5 waste heat recovery；
Fig. 3 is the cross section structure diagram of first jet in embodiment 2-5；
Fig. 4 is the flow chart of the blast furnace slag eddy flow processing method of the waste heat recovery of embodiment 1.
Label declaration in schematic diagram：1st, steam chambers；2nd, molten slag groove；3rd, first jet；301st, jet pipe；3011st, etc.
Footpath section；3012nd, expansion segment；302nd, fluid is expanded；3021st, the first semielliptical portion；3022nd, the second semielliptical portion；3023rd, through hole；
4th, second nozzle；5th, installing plate；6th, helical guide groove；7th, cylinder；8th, temperature measuring mechanism；9th, introduction channel.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention 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
Part of the embodiment of the present invention, rather than whole embodiments.Therefore, embodiments of the invention to providing in the accompanying drawings below
Detailed description be not intended to limit the scope of claimed invention, but be merely representative of the present invention selected embodiment.
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained all under the premise of creative work is not made
Other embodiment, belong to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, it is impossible to
It is interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, without being understood that
To indicate or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " etc. should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or
It is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, can also be by between intermediary
Connect connected, can be the connection of two element internals.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1-3, the blast furnace slag eddy flow processing unit of the waste heat recovery of the present embodiment, including：Cylinder 7, blast furnace slag is certainly
The top of cylinder 7 is fallen into, and is discharged by the bottom of cylinder 7；Eddy flow cooling unit, eddy flow cooling unit are used for falling into the height in cylinder 7
Clinker is impacted so that close to the inwall of cylinder 7, helically wire declines blast furnace slag.
In specific the present embodiment, eddy flow cooling unit includes first jet 3 and several second nozzles 4, first spray
Mouth 3 is located at the lower section at the top of cylinder 7, the blast furnace slag that the spout face of first jet 3 is fallen from the top of cylinder 7；Several second
Nozzle 4 is located at the lower section of first jet 3, and the axis and the outer surface of correspondence position cylinder 7 of the spout of second nozzle 4 are tangent.Wherein,
First jet 3 is water column nozzle, and second nozzle 4 is hydraulic spray nozzle.The bottom of cylinder 7 be connected with aperture from top to bottom it is tapered gradually
(after blast furnace slag is reached in tapered channels, the component velocity tangential along the inwall of cylinder 7 has declined contracting passage, and tapered channels are set
It is tapered from top to bottom to be calculated as aperture so that the girth to be rotated a circle closer to tapered channels bottom blast furnace slag on its inwall is got over
It is small, be advantageous to continue to along the tapered channels inwall track that helically wire is moved after blast furnace slag is reached in tapered channels), should
Helical guide groove 6 is provided with the inwall of tapered channels, blast furnace slag is further ensured and rotates whereabouts along tapered channels inwall；(this
In embodiment, helical guide groove 6 is welded on tapered channels inwall for the steel bar of square by cross section and formed, i.e. helical guide groove
6 surround one on the inwall of tapered channels accommodates blast furnace slag and the helical channel for making blast furnace slag be slided in it, ensures high
Clinker maintains spiral to decline all the time on tapered channels inwall, and wherein the length of side of steel bar cross section is 3-10mm, after steel bar welding
Grinding and buffing processing is carried out at butt welding contact).
With reference to Fig. 4, the blast furnace slag eddy flow processing method of the waste heat recovery of the present embodiment, comprise the following steps：
Step 1：Get out the blast furnace slag eddy flow processing unit of waste heat recovery first, allow pending blast furnace slag from upper and
Under fall into cylinder 7；
Step 2：Blast furnace slag in the dropping process of cylinder 7, rush by the water jets under high pressure sprayed first by the first jet 3 of face
Hit, cool down and (impacted in the big momentum of water jets under high pressure and be fractured into little particle, granular clinker with blast furnace slag under the admittedly strong cool condition of liquid
Heat transfer rate between water will be bigger, and blast furnace slag is crashed to pieces and tentatively cooling) so that blast furnace slag is in close to the inwall of cylinder 7
Zigzag shape declines (i.e. blast furnace slag has under the impact of water jets under high pressure along the tangential huge component velocity of the inwall of cylinder 7), so
Continue to impact by the high-pressure water mist that some second nozzles 4 spray afterwards, cool down that (impact of high-pressure water mist can continue to blast furnace slag edge
The tangential higher component velocity of the inwall of cylinder 7), blast furnace slag is maintained close to the inwall of cylinder 7 movement locus that helically wire declines；
Step 3：After blast furnace slag is reached in the tapered channels of the lower section of cylinder 7, the spiral that is set on tapered channels inwall
Guide groove 6 continues helically wire decline；
Step 4：Blast furnace slag after processing, which is discharged from tapered channels bottom and is sent to waste heat boiler, carries out UTILIZATION OF VESIDUAL HEAT IN,
The steam formed in processing procedure is drained from the top of cylinder 7, is recycled.
Although disclosing a large amount of blast furnace residues processing techniques in the prior art, often consumed in processing procedure more
Cooling water, waste heat recovery efficiency is also of a relatively high, and the application is exactly to overcome above-mentioned technical problem to design.It is high in the application
Clinker rotates along device inwall all the time to fall, and considerably increases the time of contact of clinker and cooling water, ensure that clinker has foot
Enough intensities of cooling, so as to significantly reduce the consumption of cooling water inflow, effectively increase waste heat recovery efficiency；Steamed caused by processing
Vapour is collected and is used through collection conduit, and the clinker after processing is discharged from tapered channels bottom, and temperature control is in 700-1000
DEG C, it is sent into waste heat boiler through conveying device and carries out cogeneration；It is cold using the processing unit and processing method of the present invention, blast furnace slag
But speed is high, and amount of glassy phase is high in gained slag, improves the product quality of clinker, reducing 60%-80% washing slag water makes
Dosage；And during slag treatment about 90% or so steam is reclaimed, the heat of blast furnace slag about 70% has been reclaimed, has been increased substantially
Utilization rate of waste heat during slag treatment, returns the current period below half a year, is advantageous to iron and steel enterprise's energy-saving and emission-reduction.
Embodiment 2
The blast furnace slag eddy flow processing unit of the waste heat recovery of the present embodiment, its structure is substantially the same manner as Example 1, more enters one
Step：First jet 3 includes jet pipe 301 and expands fluid 302；Jet pipe 301 includes isometrical section 3011 and expansion segment 3012, etc.
Footpath section 3011 is straight tube, and expansion segment 3012 is the increaser of aperture flaring, and isometrical section 3011 less with the aperture of expansion segment 3012
One end connects；Expand fluid 302 to be arranged inside isometrical section 3011, expand fluid 302 and be provided with along isometrical section of 3011 length directions
Through hole 3023；Expand fluid 302 to be combined by the first semielliptical portion 3021 and the second semielliptical portion 3022, the first semielliptical
The major axis in portion 3021 and the short axle in the second semielliptical portion 3022 coincide, the major axis in the first semielliptical portion 3021 with isometrical section 3011
Length direction it is perpendicular；First semielliptical portion 3021 is close to the place direction of expansion segment 3012.
In the application, the said structure of first jet 3, the water jets under high pressure for enabling to spray is in fan-shaped diffusion type to blast furnace
Slag impacts, so as to effectively increase the contact area of water jets under high pressure and blast furnace slag so that all blast furnace slags fallen are effective
Impact, greatly strengthen swirl strength of the blast furnace slag in cylinder 7, so as to add blast furnace slag in cylinder 7 and tapered channels
The interior screw time, dramatically increase the time of contact of clinker and cooling water；Wherein, expand fluid 302 and be arranged at isometrical section
Inside 3011, when water under high pressure is in isometrical section of 3011 internal circulation, its by expansion fluid 302 stop and to expand 302 liang of side sprays of fluid
Penetrate, simultaneously, expand fluid 302 provided with the through hole 3023 along isometrical section of 3011 length directions, these through holes 3023
A certain amount of water under high pressure be may be allowed by be formed with converging together with the water under high pressure expanded at the both sides injection of fluid 302 in fan-shaped diffusion
The water jets under high pressure beam of shape；Wherein, design expand fluid 302 combined by the first semielliptical portion 3021 and the second semielliptical portion 3022 and
Into the major axis in the first semielliptical portion 3021 and the short axle in the second semielliptical portion 3022 coincide, the length in the first semielliptical portion 3021
Axle and isometrical section 3011 of length direction are perpendicular, and the first semielliptical portion 3021 is close to the place direction of expansion segment 3012, and above-mentioned
One semielliptical portion 3021 and the combined structure design in the second semielliptical portion 3022 so that originally in isometrical section of 3011 internal circulation
High direct voltage water column is uniformly divided into the water column beam in fan-shaped diffusion type, is improved to the uniform of blast furnace slag impact momentum
Property, it is ensured that all blast furnace slags can be moved effectively (when the impact that blast furnace slag different piece is subject to is moved along the spiral inner wall of cylinder 7
When measuring uneven, the blast furnace slag of some parts is easily caused directly to be dropped in cylinder 7).
Embodiment 3
The blast furnace slag eddy flow processing unit of the waste heat recovery of the present embodiment, its structure is substantially the same manner as Example 2, more enters one
Step, present treatment device also includes：Molten slag groove 2 and introduction channel 9；Molten slag groove 2 is located at the top at the top of cylinder 7, molten slag groove 2
Lower end is connected with introduction channel 9, and the length direction of the introduction channel 9 is parallel with the length direction of cylinder 7.
In the application, molten slag groove 2 is located at the top at the top of cylinder 7, and molten slag groove 2 pushes up for blast furnace slag to be delivered into cylinder 7
Above portion, the inner surface of molten slag groove 2 is laid by silicated graphite or other exotic materials, it is desirable to can be resistant to more than 1000 DEG C for a long time
High temperature；The lower end of introduction channel 9 of molten slag groove 2 is connected with introduction channel 9, the length direction of the introduction channel 9 and the length of cylinder 7
Direction is parallel, the guide effect of introduction channel 9 so that blast furnace slag is dropped in cylinder 7 in vertical state, and first jet 3
The blast furnace slag that is fallen from the top of cylinder 7 of spout face beaten so that water jets under high pressure beam is vertical all the time vertically
(i.e. blast furnace slag in the vertical direction forms blast furnace slag stream, side and the water jets under high pressure beam of the blast furnace slag stream on the blast furnace slag of whereabouts
The fan-shaped diffusingsurface of formation is vertical), so as to which the momentum of water jets under high pressure beam is delivered on blast furnace slag to greatest extent, it is ensured that blast furnace
Swirl strength of the slag in cylinder 7.
Embodiment 4
The blast furnace slag eddy flow processing unit of the waste heat recovery of the present embodiment, its structure is substantially the same manner as Example 3, more enters one
Step, present treatment device also includes：Steam chambers 1, the top of cylinder 7 are connected with the steam chambers 1 above it, steam chambers
1 connects with jet chimney.(in specific the present embodiment, the top of cylinder 7 is lived by plate seal, opened up on the head slab of cylinder 7 with
The through hole that steam chambers 1 are connected, and the through hole for allowing blast furnace slag to be fallen into from the top of cylinder 7 inside cylinder 7.)
In the application, the top of cylinder 7 is connected with the steam chambers 1 above it, and steam chambers 1 connect with jet chimney
It is logical, steam chambers 1 are initially entered from the steam of the interior discharge of cylinder 7, are then drained along jet chimney, steam chambers 1 play steaming
The effect that vapour is accumulated and buffered, a large amount of instant steams for avoiding discharging in cylinder 7 caused pipeline after entering in jet chimney
Stress disorder.
Embodiment 5
The blast furnace slag eddy flow processing unit of the waste heat recovery of the present embodiment, its structure is substantially the same manner as Example 4, more enters one
Step, present treatment device also includes：Installing plate 5 and temperature measuring mechanism 8；Temperature measuring mechanism 8 be used for detect tapered channels top inner wall with
And the temperature of bottom interior wall；Installing plate 5 is arranged at the outer surface of cylinder 7；The outer surface of cylinder 7 and the outer surface of tapered channels are set
It is equipped with cooling water sandwich.
In the application, installing plate 5 is arranged at the outer surface of cylinder 7, for being installed whole device, being placed on mounting bracket
On；Temperature measuring mechanism 8 is used to detect tapered channels top inner wall and the temperature of bottom interior wall (can be by interior at the top of tapered channels
Wall and bottom interior wall place thermocouple and realize thermometric respectively), it can be adjusted accordingly according to the Temperature numerical that temperature measuring mechanism 8 is fed back
The cooling water flow of first jet 3 and second nozzle 4, in the case where ensureing the precursor of the enough intensities of cooling of clinker, spray is reduced as far as possible
Water；The outer surface of cylinder 7 and the outer surface of tapered channels are provided with cooling water sandwich, and cooling water sandwich can ensure that in cylinder 7
Wall and tapered channels inner wall temperature are maintained at less than 500 DEG C, prevent cylinder 7 and tapered channels from becoming due to high temperature
Shape, while the radiant heat of blast furnace slag can be absorbed.
Schematically the present invention and embodiments thereof are described above, this describes no restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So if common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, without designing and the technical scheme for creativeness
Similar frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (10)
- A kind of 1. blast furnace slag eddy flow processing unit of waste heat recovery, it is characterised in that including：Cylinder (7), blast furnace slag are fallen into from the top of the cylinder (7), are discharged by the cylinder (7) bottom；Eddy flow cooling unit, the eddy flow cooling unit are used to impact to falling into the blast furnace slag in cylinder (7) so that blast furnace Close to the inwall of cylinder (7), helically wire declines slag.
- 2. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 1, it is characterised in that：The eddy flow cooling Unit includes the first jet (3), and the first jet (3) is located at the lower section at the top of cylinder (7), the spout of first jet (3) The blast furnace slag that face is fallen from the top of the cylinder (7).
- 3. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 2, it is characterised in that：The eddy flow cooling Unit also includes several second nozzles (4), and several described second nozzles (4) are located at below first jet (3), second nozzle (4) axis of spout and the outer surface of correspondence position cylinder (7) are tangent.
- 4. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 3, it is characterised in that：The first jet (3) it is water column nozzle, the second nozzle (4) is hydraulic spray nozzle.
- 5. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 3, it is characterised in that：The cylinder (7) Bottom be connected with aperture tapered tapered channels from top to bottom, be provided with helical guide groove (6) on the inwall of the tapered channels.
- 6. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 3, it is characterised in that：The first jet (3) include jet pipe (301) and expand fluid (302)；The jet pipe (301) includes isometrical section (3011) and expansion segment (3012), and described isometrical section (3011) are straight tube, described Expansion segment (3012) is the increaser of aperture flaring, and isometrical section (3011) connect with the less one end in expansion segment (3012) aperture It is logical；The expansion fluid (302) is arranged at isometrical section (3011) inside, expands fluid (302) and is provided with along isometrical section (3011) length Spend the through hole (3023) in direction；The expansion fluid (302) is combined by the first semielliptical portion (3021) and the second semielliptical portion (3022), and the first half ellipse The major axis in bulb (3021) and the short axle in the second semielliptical portion (3022) coincide, the major axis in the first semielliptical portion (3021) with etc. The length direction of footpath section (3011) is perpendicular；The first semielliptical portion (3021) is close to direction where expansion segment (3012).
- 7. the blast furnace slag eddy flow processing unit of waste heat recovery according to claim 3, it is characterised in that also include：Molten slag groove And introduction channel (9) (2)；The molten slag groove (2) is located at the top at the top of cylinder (7), and the lower end of molten slag groove (2) is connected with importing Passage (9), the length direction of the introduction channel (9) are parallel with the length direction of cylinder (7).
- 8. the blast furnace slag eddy flow processing unit of the waste heat recovery according to claim 3 or 6, it is characterised in that also include：Steam Vapour chamber (1), the top of the cylinder (7) are connected with the steam chambers (1) above it, steam chambers (1) and jet chimney Connection.
- 9. the blast furnace slag eddy flow processing unit of the waste heat recovery according to claim 5-7 any one, it is characterised in that also Including：Installing plate (5) and temperature measuring mechanism (8)；The temperature measuring mechanism (8) is used to detect the tapered channels top inner wall and bottom The temperature of portion's inwall；The installing plate (5) is arranged at the outer surface of cylinder (7)；The outer surface of the cylinder (7) and described tapered The outer surface of passage is provided with cooling water sandwich.
- 10. the blast furnace slag eddy flow processing method of a kind of waste heat recovery, it is characterised in that comprise the following steps：Step 1：Allow pending blast furnace slag is top-down to fall into cylinder (7)；Step 2：Blast furnace slag the water column impact, the cooling that are sprayed first by first jet (3), makes in cylinder (7) dropping process Obtaining blast furnace slag, helically wire declines close to the inwall of cylinder (7), then continues to rush by the water smoke that some second nozzles (4) spray Hit, cool down, maintain blast furnace slag close to cylinder (7) inwall movement locus that helically wire declines；Step 3：After in tapered channels below blast furnace slag arrival cylinder (7), the spiral set on tapered channels inwall is led Groove (6) continues helically wire and declined；Step 4：Blast furnace slag after processing is discharged from tapered channels bottom, and the steam formed in processing procedure is at the top of cylinder (7) Drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200878.XA CN107841582A (en) | 2017-11-27 | 2017-11-27 | The blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711200878.XA CN107841582A (en) | 2017-11-27 | 2017-11-27 | The blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery |
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| Publication Number | Publication Date |
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| CN107841582A true CN107841582A (en) | 2018-03-27 |
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ID=61680315
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| CN201711200878.XA Withdrawn CN107841582A (en) | 2017-11-27 | 2017-11-27 | The blast furnace slag eddy flow processing unit and processing method of a kind of waste heat recovery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157850A (en) * | 2019-04-30 | 2019-08-23 | 浙江琰大新材料有限公司 | A kind of energy-efficient converter |
| CN110227590A (en) * | 2019-06-04 | 2019-09-13 | 张彬彬 | A kind of power plant's solid waste treatment device |
| CN111825349A (en) * | 2020-06-18 | 2020-10-27 | 西安交通大学 | Lime-calcium carbide co-production system and method |
| CN112266993A (en) * | 2020-10-10 | 2021-01-26 | 连云港市镔钰再生资源有限公司 | Metal smelting scrap iron recovery device |
| CN114480749A (en) * | 2022-01-10 | 2022-05-13 | 首钢集团有限公司 | Blast furnace water slag flushing nozzle |
-
2017
- 2017-11-27 CN CN201711200878.XA patent/CN107841582A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157850A (en) * | 2019-04-30 | 2019-08-23 | 浙江琰大新材料有限公司 | A kind of energy-efficient converter |
| CN110227590A (en) * | 2019-06-04 | 2019-09-13 | 张彬彬 | A kind of power plant's solid waste treatment device |
| CN111825349A (en) * | 2020-06-18 | 2020-10-27 | 西安交通大学 | Lime-calcium carbide co-production system and method |
| CN111825349B (en) * | 2020-06-18 | 2021-09-07 | 西安交通大学 | Lime-calcium carbide co-production system and method |
| CN112266993A (en) * | 2020-10-10 | 2021-01-26 | 连云港市镔钰再生资源有限公司 | Metal smelting scrap iron recovery device |
| CN114480749A (en) * | 2022-01-10 | 2022-05-13 | 首钢集团有限公司 | Blast furnace water slag flushing nozzle |
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