CN208604142U - A kind of air-distribution device and slag granulating heat-exchange system - Google Patents
A kind of air-distribution device and slag granulating heat-exchange system Download PDFInfo
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- CN208604142U CN208604142U CN201821126813.5U CN201821126813U CN208604142U CN 208604142 U CN208604142 U CN 208604142U CN 201821126813 U CN201821126813 U CN 201821126813U CN 208604142 U CN208604142 U CN 208604142U
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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 utility model discloses a kind of air-distribution device and slag granulating heat-exchange systems.Air-distribution device includes three-stage air distribution plate, blast cap and the air compartment including the first sub- air compartment, the second sub- air compartment and the sub- air compartment of third corresponding with air distribution plate of inclination arrangement.First sub- air compartment, the second sub- air compartment and the sub- air compartment of third are by according to its fluidising air velocityw 1 、w 2 、w 3 Relationshipw 1 <w 2 <w 3 It is configured.System includes slag granulating heat-exchanger rig, granulating device, lifting device, cooling device, screening plant and to slag device.Slag granulating heat-exchanger rig includes fluid bed granulation Heat Room and the air-distribution device that fluid bed granulation Heat Room bottom is arranged in.The utility model is cooling with subregion, it is ensured that the cooling effect of high intensity.
Description
Technical field
The utility model relates to a kind of air-distribution device and slag granulating heat-exchange system, the metallurgy for belonging to energy conservation and environmental protection is molten
Slag treatment and heat recovery technical field.
Background technique
Slag is high temperature, molten state product in metallurgical production process, such as blast furnace slag, steel slag, the copper ashes of liquid,
In contain heat resource abundant.
Such as liquid blast furnace is a kind of typical slag, the blast furnace slag of quenching forms the amorphous of a large amount of glass phase
State substance, hydration activity with higher are the quality raw materials for producing the construction materials such as cement.Meanwhile liquid blast furnace temperature
Between 1300 DEG C to 1600 DEG C, there is very high heat energy recycle value.
Currently, liquid blast furnace mainly uses water quenching to handle, the blast furnace slag after water quenching can be used for making the building such as cement
Material, main problem existing for water quenching have: water consumption is big；Generate H2S and SOxCause atmosphere pollution；Thermal energy is not returned
It receives；Water Quenching Slag moisture content is high, and grinding need to be dried；Contained subparticle is to components such as water pump and valves in recirculated water
Abrasion and blocking are very serious, and system maintenance work amount is big, increases maintenance cost.
The shortcomings that for blast furnace cinder water quenching technique, the 1970s, foreign countries just had begun working on dry granulation slag
Method, it is more representational to have wind quenching method and centrifugal process.Wind quenching method is to generate high-speed flow with high-power granulation blower fan to blow
Dissipating liquid blast furnace, major defect is that power consumption is big, equipment bulky complex, take up a large area, invest and operating cost is high,
In liquid blast furnace changes in flow rate, wind speed and air quantity are not easy to coordinate, and a large amount of cold wind enters system and also reduces heat time
The quality of receipts.Centrifugal process is by turntable or the centrifugal force of revolving cup high speed rotation generation by liquid blast furnace slag granulation, although being not required to
Highly energy-consuming equipment as granulation blower fan is wanted, but high-speed rotating turntable or revolving cup are directly contacted with high-temperature slag, therefore are dropped
Low granulation apparatus reliability of operation, it is more sensitive to the temperature and changes in flow rate of liquid blast furnace to be granulated effect in addition, only
By adjusting revolving speed, the effect is unsatisfactory, and slag disperses at a high speed also be unfavorable for the compact design of equipment, high-temperature slag around
A certain position inside high-speed impact equipment is concentrated, the hot-spot of equipment is also easily caused and damages equipment.
In recent years, domestic part Research Team had also carried out relevant research, such as revolving cup to the granulating technique of slag
Granulation, mechanical wheel granulation, high pressure gas granulation etc. also attempt to develop on the basis of slag granulating technological development split type or one
Body formula granulation and energy recycle device, and constantly optimize for problem in practice process.
Utility model content
The purpose of the utility model is to provide the air-distribution devices and slag granulating heat-exchange system of a kind of heat exchange optimization.
The utility model is achieved through the following technical solutions:
A kind of air-distribution device, the air-distribution device include the three-stage air distribution plate being in tilted layout, are arranged in the air distribution plate
On several blast caps and the air compartment that is arranged in below the air distribution plate, the air compartment includes and three-stage air distribution plate one is a pair of
The first sub- air compartment being arranged in juxtaposition, the second sub- air compartment and the sub- air compartment of third answered, the first sub- air compartment, the second sub- air compartment and
Three sub- air compartments are sequentially arranged along the air distribution plate least significant end to most significant end, and the first sub- air compartment for being located at air distribution plate least significant end is set
It is set to its fluidising air velocityw 1 Minimum is arranged to its fluidising air velocity positioned at the sub- air compartment of the third of air distribution plate most significant endw 3 It is maximum.
In above-mentioned technical proposal, the wedge shaped arrangement of air distribution plate, and its least significant end is its small head end.
In above-mentioned technical proposal, 5 °≤α≤20 ° of key groove of the air distribution plate.
A kind of slag granulating heat-exchange system can be used in recovery waste heat after the molten slag dry granulation by slag chute, institute
The system of stating includes slag granulating heat-exchanger rig, granulating device, lifting device and cooling device；The slag granulating heat-exchanger rig packet
Include fluid bed granulation Heat Room and the air-distribution device that fluid bed granulation Heat Room bottom is set；The air-distribution device includes inclination
The three-stage air distribution plate of arrangement, several blast caps being arranged on the air distribution plate and the wind being arranged in below the air distribution plate
Room, the air compartment include the first sub- air compartment, the second sub- air compartment and third being arranged in juxtaposition correspondingly with three-stage air distribution plate
Sub- air compartment, the first sub- air compartment, the second sub- air compartment and the sub- air compartment of third are along the air distribution plate least significant end to most significant end successively cloth
It sets；The granulating device is arranged in the fluid bed granulation Heat Room upper outside, and is located at below the slag chute；The stream
Change bed granulating heat-transfer room bottom and be provided with slag particle channel, and the least significant end side of the air distribution plate is arranged in the slag particle channel；
The slag particle channel is connected to the lifting device lower part；The lifting device upper outlet is arranged on the cooling device top
Portion.
In above-mentioned technical proposal, fluid bed granulation Heat Room lower part is in tapered setting.
In above-mentioned technical proposal, the fluid bed granulation Heat Room wall surface selects water wall structure.
Preferably, the described first sub- air compartment, the second sub- air compartment and the sub- air compartment of third are by according to its fluidising air velocityw 1 、w 2 、w 3 's
Relationshipw 1 <w 2 <w 3 It is configured.
In above-mentioned technical proposal, the system also includes screening plant and give slag device, the screening plant with it is described cold
But bottom of device is connected；The screening plant is connected to slag device with fluid bed granulation Heat Room lower part by described.
In above-mentioned technical proposal, fluid bed granulation Heat Room lower part is provided with pipe laying, and the pipe laying is along the cloth
Aerofoil inclined direction arrangement.
In above-mentioned technical proposal, the wedge shaped arrangement of air distribution plate, and its least significant end is its small head end；The air distribution plate
5 °≤α≤20 ° of key groove.
Compared with the prior art, the utility model has the following advantages: the hot spraying particles of slag after wedge structure and jet stream
Shape is adapted, and reduces air distribution plate area and Fluidization wind rate to greatest extent, is returned to reduce power consumption and improve heat
Yield；It is suitable for high-intensitive heat exchange that thin loopback of material, which is used, to maintain material screening in fluidized bed, can improve the cooling of hot particle
Effect is allowed to maintain higher vitreum content, obtains the dry slag particle of high-quality.
Detailed description of the invention
Fig. 1 is a kind of air-distribution device schematic top plan view involved in the utility model.
Fig. 2 is a kind of slag granulating heat-exchange system schematic diagram involved in the utility model.
In figure: 1- slag granulating heat-exchanger rig；2- slag chute；3- granulating device；4- lifting device；The cooling dress of 5-
It sets；6- screening plant；11- fluid bed granulation Heat Room；12- air distribution plate；13- air compartment；The sub- air compartment of 131- first；132-
Second sub- air compartment；The sub- air compartment of 133- third；14- slag particle channel；15- pipe laying；16- blast cap；17- gives slag device.
Specific embodiment
Specific embodiment of the present utility model and the course of work are further described with reference to the accompanying drawing.
The positional terms such as the upper, lower, left, right, front and rear in present specification be positional relationship based on the figure and
It establishes.Attached drawing is different, then corresponding positional relationship is also possible to change therewith, therefore cannot be interpreted as with this to protection model
The restriction enclosed.
As shown in Figure 1, the utility model provides a kind of slag granulating heat-exchange system, can be used in will be in slag chute 2
Recovery waste heat after molten slag dry granulation.System includes slag granulating heat-exchanger rig 1, granulating device 3, lifting device 4 and cold
But device 5.
Slag granulating heat-exchanger rig 1 includes fluid bed granulation Heat Room 11 and is arranged in 11 bottom of fluid bed granulation Heat Room
Air-distribution device.
Slag chute 2 is transported to slag granulating heat-exchanger rig 1 from slag discharge mouth, by molten slag.2 entrance of slag chute
The top side of fluid bed granulation Heat Room 11 is set.Granulating device 3 is arranged in 11 upper outside of fluid bed granulation Heat Room,
And it is located at 2 lower section of slag chute.Granulating device 3 is granulated spout towards fluid bed granulation Heat Room 11.1000 ~ 1500 DEG C of liquid
Slag enters fluid bed granulation Heat Room 11 by 2 overflow of slag chute, is solidified under the action of granulating device 3 by chilling, is broken
It is less than the slag particle of 10mm at average diameter, slag particle is scattering into 11 surrounding of fluid bed granulation Heat Room and bottom in aplysia punctata.Fluidisation
11 lower part of bed granulating heat-transfer room is in tapered setting, convenient for collecting slag particle.11 wall surface of fluid bed granulation Heat Room selects water-cooling wall knot
Structure enables slag particle to be cooled when being scattering into wall surface and further solidifies or cool down.
It collects and continues naturally in order to make to spill the high temperature melting slag particle splashed in fluid bed granulation Heat Room 11 after granulation
It is sent to next stage heat-exchanger rig, 11 bottom of fluid bed granulation Heat Room is provided with air-distribution device.Air-distribution device include air distribution plate 12,
Blast cap 16 and air compartment 13.Air distribution plate 12 is in tilted layout, and air compartment 13 is arranged below air distribution plate 12.It is provided on air distribution plate 12 several
A blast cap 16.Air distribution plate 12 is in an inclined direction arranged by three-stage, a corresponding sub- air compartment below each section of air distribution plate.Cause
This, air compartment 13 include the first sub- air compartment 131 being arranged in juxtaposition correspondingly with three-stage air distribution plate, the second sub- air compartment 132 and
The sub- air compartment 133 of third.
As shown in Fig. 2, the wedge shaped arrangement of air distribution plate 12, and its least significant end is its small head end.The bevel edge of wedge shape is formed sharp
Angle is key groove.The key groove α of air distribution plate 12 is 5 °≤α≤20 °.Air distribution plate from low into high placement process, identical spacing
Air distribution plate cross-sectional area also increase.The wedge structure of air distribution plate cross section is mutually fitted with the hot spraying particles shape of slag after jet stream
It answers, reduces air distribution plate area and Fluidization wind rate to greatest extent, to reduce power consumption and improve heat recovery rate.
Since the landing point after high-temperature slag granulation concentrates on the high side of air distribution plate, then in gravity and fluidisation wind action
It is lower to be flowed to downside, therefore, the material of air distribution plate high side often temperature highest.It, can if be arranged with conventional pressure air compartment
Upper part slag particle heat transfer effect can be caused bad.And technical solution according to the present utility model, at this point, since each sub- air compartment is only
Vertical, wind pressure, wind speed can be different, are convenient for the optimizing regulation of region wind pressure and wind speed on air distribution plate.Independently arrange
Sub- air compartment is also respectively connect with air feed system, so that the wind pressure of each sub- air compartment, wind speed can be separately adjustable.It therefore can be with
It reduces extra air and fluidized bed is entered by air distribution plate, to reduce heat loss, improve the thermal efficiency.
As a kind of technical solution of optimization, the first sub- air compartment 131, the second sub- air compartment 132 and the sub- air compartment 133 of third are along institute
It states 12 least significant end of air distribution plate to be sequentially arranged to most significant end, and the first sub- air compartment 131, the second sub- air compartment 132 and the sub- air compartment 133 of third
By according to its fluidising air velocityw 1 、w 2 、w 3 Relationshipw 1 <w 2 <w 3 It is configured.That is, being located at the first sub- wind of 12 least significant end of air distribution plate
Room 131 is arranged to its fluidising air velocityw 1 Minimum is arranged to its fluidisation positioned at the sub- air compartment 133 of the third of 12 most significant end of air distribution plate
Wind speedw 3 It is maximum.To strengthen the cooling effect that hot particle trickles down region, the dry solid impurity particle of higher quality is obtained.
11 bottom of fluid bed granulation Heat Room is provided with slag particle channel 14, and air distribution plate 12 is arranged in most in slag particle channel 14
Low side side, so that slag particle enters slag particle channel from fluid bed granulation Heat Room 11 under fluidized wind and gravity double reaction plus
14。
Slag particle channel 14 is connected to 4 lower part of lifting device；The setting of 4 upper outlet of lifting device, will at 5 top of cooling device
High temperature slag particle in slag particle channel 14 promotes into cooling device 5 further heat exchange cooling and carries out UTILIZATION OF VESIDUAL HEAT IN.
5 bottom of cooling device is connected with screening plant 6, slag particle after cooling enter in screening plant 6 be sieved into thick slag and
Fine slag.Thick slag carries out later use.Fine slag is then transported to slag device 17, to slag device 17 and fluid bed granulation Heat Room 11
Lower part is connected, and sends fine slag back to fluid bed granulation Heat Room 11 as fluidizing agent, strengthens in fluid bed granulation Heat Room 11
Slag particle flowing and heat transfer effect.
Meanwhile to further strengthen slag particle heat transfer effect, 11 lower part of fluid bed granulation Heat Room is provided with pipe laying 15, pipe laying
15 arrange along 12 inclined direction of air distribution plate, reduce abrasion.
11 top side of fluid bed granulation Heat Room is equipped with exhanst gas outlet, connect with subsequent waste gas utilization or processing unit,
High-temperature flue gas after further heat exchanging carries out heat recovery.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of air-distribution device, it is characterised in that: the air-distribution device includes the three-stage air distribution plate (12) being in tilted layout, setting
The air compartment (13) of several blast caps (16) and setting below the air distribution plate (12) on the air distribution plate (12), it is described
Air compartment (13) includes the first sub- air compartment (131) being arranged in juxtaposition correspondingly with three-stage air distribution plate, the second sub- air compartment (132)
With the sub- air compartment of third (133), the first sub- air compartment (131), the second sub- air compartment (132) and the sub- air compartment of third (133) are along described
Air distribution plate (12) least significant end is sequentially arranged to most significant end, and the first sub- air compartment (131) for being located at air distribution plate (12) least significant end is set
It is set to its fluidising air velocityw 1 Minimum, the sub- air compartment of third (133) for being located at air distribution plate (12) most significant end are arranged to its fluidising air velocityw 3
It is maximum.
2. a kind of air-distribution device according to claim 1, it is characterised in that: the wedge shaped arrangement of the air distribution plate (12), and
Its least significant end is its small head end.
3. a kind of air-distribution device according to claim 2, it is characterised in that: the 5 °≤α of key groove of the air distribution plate (12)
≤20°。
4. a kind of slag granulating heat-exchange system can be used in recovery waste heat after the molten slag dry granulation of slag chute (2),
Be characterized in that: the system comprises slag granulating heat-exchanger rig (1), granulating device (3), lifting device (4) and cooling devices
(5)；The slag granulating heat-exchanger rig (1) includes fluid bed granulation Heat Room (11) and is arranged in fluid bed granulation Heat Room
(11) air-distribution device of bottom；The air-distribution device includes the three-stage air distribution plate (12) being in tilted layout, is arranged in the cloth wind
The air compartment (13) of several blast caps (16) and setting below the air distribution plate (12) on plate (12), air compartment (13) packet
Include the first sub- air compartment (131), the second sub- air compartment (132) and the sub- wind of third being arranged in juxtaposition correspondingly with three-stage air distribution plate
Room (133), the first sub- air compartment (131), the second sub- air compartment (132) and the sub- air compartment of third (133) are along the air distribution plate (12)
Least significant end is sequentially arranged to most significant end；The granulating device (3) is arranged in fluid bed granulation Heat Room (11) upper outside,
And it is located at below the slag chute (2)；Fluid bed granulation Heat Room (11) bottom is provided with slag particle channel (14), and described
Slag particle channel (14) is arranged in the least significant end side of the air distribution plate (12)；The slag particle channel (14) and the lifting device
(4) lower part is connected to；Lifting device (4) the upper outlet setting is at the top of the cooling device (5).
5. a kind of slag granulating heat-exchange system according to claim 4, it is characterised in that: the fluid bed granulation Heat Room
(11) lower part is in tapered setting；Fluid bed granulation Heat Room (11) wall surface selects water wall structure.
6. a kind of slag granulating heat-exchange system according to claim 4 or 5, it is characterised in that: cooling device (5) choosing
With moving bed cooler.
7. a kind of slag granulating heat-exchange system according to claim 4, it is characterised in that: the first sub- air compartment (131),
Second sub- air compartment (132) and the sub- air compartment of third (133) are by according to its fluidising air velocityw 1 、w 2 、w 3 Relationshipw 1 <w 2 <w 3 It is configured.
8. a kind of slag granulating heat-exchange system according to claim 4, it is characterised in that: the system also includes screenings to fill
It sets (6) and to slag device (17), the screening plant (6) is connected with the cooling device (5) bottom；The screening plant (6)
It is connected to slag device (17) with fluid bed granulation Heat Room (11) lower part by described.
9. a kind of slag granulating heat-exchange system according to claim 4, it is characterised in that: the fluid bed granulation Heat Room
(11) lower part is provided with pipe laying (15), and the pipe laying (15) is arranged along the air distribution plate (12) inclined direction.
10. a kind of slag granulating heat-exchange system according to claim 4, it is characterised in that: the air distribution plate (12) is in wedge
Shape arrangement, and its least significant end is its small head end；5 °≤α≤20 ° of key groove of the air distribution plate (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821126813.5U CN208604142U (en) | 2018-07-17 | 2018-07-17 | A kind of air-distribution device and slag granulating heat-exchange system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821126813.5U CN208604142U (en) | 2018-07-17 | 2018-07-17 | A kind of air-distribution device and slag granulating heat-exchange system |
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| CN208604142U true CN208604142U (en) | 2019-03-15 |
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ID=65668790
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624729A (en) * | 2018-07-17 | 2018-10-09 | 中能立化科技有限公司 | A kind of air-distribution device and slag granulating heat-exchange system |
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2018
- 2018-07-17 CN CN201821126813.5U patent/CN208604142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624729A (en) * | 2018-07-17 | 2018-10-09 | 中能立化科技有限公司 | A kind of air-distribution device and slag granulating heat-exchange system |
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