CN106939364A - It is a kind of to reclaim the blast furnace slag air cushion processing method and processing device of high-quality waste heat - Google Patents
It is a kind of to reclaim the blast furnace slag air cushion processing method and processing device of high-quality waste heat Download PDFInfo
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- CN106939364A CN106939364A CN201710319386.6A CN201710319386A CN106939364A CN 106939364 A CN106939364 A CN 106939364A CN 201710319386 A CN201710319386 A CN 201710319386A CN 106939364 A CN106939364 A CN 106939364A
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- air cushion
- 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
- C21B3/08—Cooling slag
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention, which is disclosed, a kind of can reclaim the blast furnace slag air cushion processing method and processing device of high-quality waste heat, the blast furnace slag processing technology field belonged in iron and steel metallurgical industry.The processing unit includes water interlayer casing, high-pressure water mist shower nozzle, air cushion plate, jet chimney, slag entrance and slag water collector；Liquid blast furnace is flowed on air cushion plate, and little particle is broken into by blowing；The water smoke that waterfog head above air cushion plate sprays further is cooled down to the slag granules of formation, constitute aerosol dual-cooled, air cushion plate also acts as the effect of conveying slag granules, and slag is transported out device, and temperature, which is down to 300 700 DEG C, is used for Waste Heat Generation；The side of water interlayer casing sets jet chimney interface, and the hot-air produced in processing is recycled.The present invention has the technical characterstics such as cooldown rate is high, amount of glassy phase is high, the close property of matter is good and device controllability is higher, the utilization rate of waste heat in blast furnace slag processing procedure is greatly improved, the product quality of solid-state blast furnace slag is improved, is conducive to iron and steel enterprise's energy-saving and emission-reduction.
Description
Technical field：
The invention belongs to the blast furnace slag processing equipment field in iron and steel metallurgical industry, and in particular to one kind can reclaim Gao Pin
The blast furnace slag air cushion processing method and processing device of matter waste heat.
Background technology：
In steel production, main both at home and abroad to use water quenching slag flushing process, the high-temperature residual heat of blast furnace slag cannot reclaim profit
With；, it is necessary to consume substantial amounts of recirculated water during slag treatment, and have in a large amount of steam releasings, steam containing vulcanization
Hydrogen, sulfur dioxide etc., severe contamination is caused to the environment of surrounding.
All the time, many researchers are studied this problem, devise wind quenching method, rotary-cup type and continuous casting
The blast furnace slag dry process mode such as tandem rolling method, although the part of waste heat of blast furnace slag can be reclaimed, but the glass of solid impurity particle can not be improved into
Glass phase content, and device is complicated, it is difficult to realize industrial applications.By Field Research, inspection information, it is understood that slag
Temperature is at 1350-1450 DEG C or so, in conventional process, and liquid slag passes through water quenching, is crushed to 4mm or so particle,
Water content is high in slag after final process, need to be then sent to raw material of the cement plant as cement, this mistake by sedimentation basin processing
Journey wastes substantial amounts of water resource, and slag per ton needs 6 tons or so of recirculated water, and the industrial waste water purifying difficulty of formation is larger,
The steam of generation is difficult to collect, and white pollution is caused to environment after diffusing, easily the building around corrosion.At present, blast fumance
Technique often produces 1 ton of pig iron and about produces 0.3~0.5 ton of slag, and discharge temperature is at 1400 DEG C~1600 DEG C or so；1 ton of blast furnace slag
Heat containing about 1700MJ, equivalent to the calorific capacity of 0.058 ton of standard coal.Calculated with the iron and steel output of 2015, blast furnace slag production
Raw about 2.424 hundred million tons of amount, institute's heat content converts into the calorific capacity of 14,060,000 tons of standard coals.So the recovery of blast furnace slag waste heat resource
With utilization, energy conservation, energy consumption reduction to steel and iron industry, the reduction of pollutant emission play the effect of key.
For above technical problem, the present invention provides a kind of processing method and processing device of recyclable blast furnace slag waste heat.Liquid
Slag flows to device portal, is blown by the high-pressure water mist of air cushion plate termination, blast furnace slag and water smoke heat convection, and slag tentatively cooling is simultaneously
By horizontal device for blowing；The blast furnace slag tentatively cooled down is reached on air cushion plate, and little particle is broken into by wind, meanwhile, wind passes through convection current
Heat exchange, takes away the partial heat of blast furnace slag；The top of air cushion plate is provided with waterfog head, the slag granules of the water smoke of ejection to formation
Further quick cooling, the heat of blast furnace slag mainly passes to small water droplet by heat transfer, and water is down to by thermal evaporation, slag temperature
300-700℃.Air cushion plate also acts as the effect of conveying slag granules, and slag is transported out device, then is delivered to by conveyer belt remaining
Heat boiler generates electricity.
The content of the invention：
There is provided a kind of high-quality waste heat that can reclaim for technical problem present in existing blast furnace Slag treatment by the present invention
Blast furnace slag air cushion processing method and processing device.The processing unit uses high-pressure water mist shower nozzle, it is ensured that the content of glass phase in slag,
To reduction water consume, improve blast furnace slag later use value important role.
A kind of blast furnace slag air cushion processing method that can reclaim high-quality waste heat provided by the present invention is specific as follows：
Liquid blast furnace enters on the front end air cushion plate 12 of air cushion plate 8 from slag entrance 15, and the front end air cushion plate 12 is right
End is provided with high-pressure water mist nozzle, and the liquid blast furnace is laterally blown into the air cushion intermediate plate 13 with stomata of the air cushion plate 8
On, the liquid blast furnace is tentatively cooled down, and the wind on the air cushion intermediate plate 13 with stomata is by the liquid blast furnace wind
Fine granularity blast furnace slag is quenched into, the water smoke that the high-pressure water mist shower nozzle 5 positioned at the top of air cushion intermediate plate 13 with stomata sprays is by institute
State fine granularity blast furnace slag quickly to cool down, the fine granularity blast furnace slag is transported forward on the air cushion intermediate plate 13 with stomata
Dynamic, the fine granularity blast furnace slag is finally discharged from the grain slag exit plate 14 positioned at the rear end of air cushion plate 8, the little particle
The temperature of shape blast furnace slag is maintained at 300-700 DEG C, and the fine granularity blast furnace slag is used for cogeneration；Heated sky in processing
Gas and the steam produced are discharged by jet chimney 1, and heat recovery is used；Dropped in the course of conveying of air cushion plate 8
A small amount of slag particle and waterfog head sprinkling excessive water collected by slag water collector 11.
It is fast that a kind of blast furnace slag air cushion processing unit that can reclaim high-quality waste heat provided by the present invention includes water interlayer
Ice chest body 6, high-pressure water mist shower nozzle 5, air cushion plate 8, jet chimney 1, slag entrance 15 and slag water collector 11.
The high-pressure water mist shower nozzle 5 is arranged on the top of the water interlayer rapid cooling casing 6；The air cushion plate 8 is with the left low right side
High dip mode, which is extended transversely through, to be arranged in the water interlayer rapid cooling casing 6, and the air cushion plate 8 is respectively front end gas from right to left
Backing plate 12, the air cushion intermediate plate 13 with stomata and grain slag exit plate 14, the air cushion plate 8 are connected by air channel 10 with blower fan 9；
The grain slag exit plate 14 is located at the rear end of the air cushion plate 8, and the grain slag exit plate 14 is used for provided with conduit will granulation
Slag transfers out device；The air cushion intermediate plate 13 with stomata is provided with a diameter of 1-3mm stomata, and the stomata spacing is 3-
8mm, adjacent two rounds Heterogeneous Permutation；The material requirements of the air cushion plate 8 can bear more than 800 DEG C of temperature.
The slag entrance 15 is arranged on the top of front end air cushion plate 12；The termination of the front end air cushion plate 12 is provided with height
Press hydraulic spray nozzle；The slag water collector 11 is arranged on the left end bottom of the water interlayer rapid cooling casing 6；Described jet chimney
1 is arranged on the side of the water interlayer rapid cooling casing 6.
The present invention is realized by cooling device, power set and air cushion conveyor technology.Its processing method is related to gas
Power is broken, water smoke is cooled down and air cushion conveyor.Liquid slag on air cushion plate by wind quenching into little particle, water smoke is provided with above air cushion plate
Slag granules are quickly cooled down by shower nozzle, and air cushion plate also acts as the effect of conveying；Meanwhile, the casing of device is provided with water interlayer,
The radiant heat of part slag can be absorbed；The steam of generation is reclaimed by pipeline.Improve blast furnace slag waste heat resource utilization rate,
Water consume is reduced, contributes to iron and steel enterprise's energy-saving and emission-reduction.
The present invention has following technical characterstic：
1st, the treatment of slag that provides of the present invention and processing equipment so that liquid slag after wind quenching by the fast quickly cooling of steam
But, the slag after cooling is transferred out device by air cushion plate, and the steam of generation is reclaimed by pipeline.At this device energy recovery furnace pulp water
90% or so steam during reason, improves the steam utilization in whole technique, reduces 50% or so water consume, carries
High energy utilization rate, returns the current period below half a year.Be conducive to iron and steel enterprise's energy-saving and emission-reduction.
2nd, it can be adjusted flexibly the invention enables slag treatment amount with yield, in the case where ensureing solid-state slag quality,
Reduce water consume.
Brief description of the drawings：
Fig. 1 is a kind of structural representation for the blast furnace slag air cushion processing unit that can reclaim high-quality waste heat of the present invention；
Fig. 2 is the structural representation of air cushion plate in Fig. 1.
In figure：1：Jet chimney；2：Water pipe；3：First water under high pressure distributor box；4：Water pump；5：High-pressure water mist shower nozzle；6：Water
Interlayer rapid cooling casing；7：Second water under high pressure distributor box；8：Air cushion plate；9：Blower fan；10：Air channel；11：Slag water collector；12：Front end
Air cushion plate；13：Air cushion intermediate plate with stomata；14：Grain slag exit plate；15：Slag entrance.
Embodiment：
To further appreciate that the present invention, the present invention is described in detail with reference to the accompanying drawings and examples.
It is provided by the present invention it is a kind of can reclaim high-quality waste heat blast furnace slag air cushion processing method be：Liquid blast furnace
Enter from slag entrance 15 on the front end air cushion plate 12 of air cushion plate 8, the right-hand member of front end air cushion plate 12 is provided with high-pressure water mist nozzle,
The liquid blast furnace is laterally blown on the air cushion intermediate plate 13 with stomata of the air cushion plate 8, the liquid blast furnace quilt
Wind on preliminary cooling, the air cushion intermediate plate 13 with stomata by the liquid blast furnace wind quenching into fine granularity blast furnace slag,
The water smoke that high-pressure water mist shower nozzle 5 positioned at the top of air cushion intermediate plate 13 with stomata sprays is quick by the fine granularity blast furnace slag
Cooling, the fine granularity blast furnace slag travels forward on the air cushion intermediate plate 13 with stomata, the fine granularity blast furnace
Slag is finally discharged from the grain slag exit plate 14 positioned at the rear end of air cushion plate 8, and the temperature of the fine granularity blast furnace slag is kept
At 300-700 DEG C, the fine granularity blast furnace slag is used for cogeneration；Heated air and the steam produced pass through in processing
Jet chimney 1 is discharged, and heat recovery is used；A small amount of slag particle and the water smoke spray dropped in the course of conveying of air cushion plate 8
The excessive water of head sprinkling is collected by slag water collector 11.
It is fast that a kind of blast furnace slag air cushion processing unit that can reclaim high-quality waste heat provided by the present invention includes water interlayer
Ice chest body 6, high-pressure water mist shower nozzle 5, air cushion plate 8, jet chimney 1, slag entrance 15 and slag water collector 11.
The high-pressure water mist shower nozzle 5 is arranged on the top of the water interlayer rapid cooling casing 6, and the high-pressure water mist shower nozzle 5 is first
It is connected afterwards by the water under high pressure distributor box 3 of water pipe 2 and first with water pump 4.
The air cushion plate 8 is extended transversely through in the low right high dip mode in a left side and is arranged in the water interlayer rapid cooling casing 6, described
Air cushion plate 8 is respectively front end air cushion plate 12, the air cushion intermediate plate 13 with stomata and grain slag exit plate 14, the gas from right to left
Backing plate 8 is connected by air channel 10 with blower fan 9；The grain slag exit plate 14 is located at the rear end of the air cushion plate 8, the grain slag
Exit plate 14 is used to grain slag transferring out device provided with conduit；The air cushion intermediate plate 13 with stomata is provided with diameter 1-
3mm stomata, the stomata spacing 3-8mm, adjacent two rounds Heterogeneous Permutation；The material requirements of the air cushion plate 8 can bear 800
Temperature more than DEG C.
The slag entrance 15 is arranged on the top of front end air cushion plate 12.
The termination of the front end air cushion plate 12 is provided with high-pressure water mist nozzle, and the high-pressure water mist nozzle passes through water pipe and second
Water under high pressure distributor box 7 is connected with water pump；Ensure that slag smoothly enters device, prevent that slag from bonding in porch.
The slag water collector 11 is arranged on the left end bottom of the water interlayer rapid cooling casing 6；The jet chimney 1 is set
In the side of the water interlayer rapid cooling casing 6, facilitate recovered steam, pipe diameter can be determined according to furnace processor and water consumption.
The water interlayer rapid cooling casing 6 is configured with cooling water sandwich, and the cooling water sandwich is used to ensure the water interlayer
The internal face temperature of rapid cooling casing 6 is maintained at less than 300 DEG C, prevents casing because high temperature deforms while blast furnace slag can be absorbed
Radiant heat；The height of water interlayer rapid cooling casing 6 is between 1500mm~5500mm, the horizontal stroke of the water interlayer rapid cooling casing 6
Section is any square or circle, and the length of water interlayer rapid cooling casing 6 is between 3000mm~16000mm.
Often row shower nozzle in the high-pressure water mist shower nozzle 5 staggers arrangement, sets 5-7 to arrange between shower nozzle, adjacent two rows nozzle
Distance be 1000mm~5000mm；The quantity of shower nozzle determines that the flow of shower nozzle is controllable according to the flow of slag, can basis
Produce reality carries out coarse adjustment, and in the case where ensureing the precursor of the enough intensities of cooling of slag, injection flow rate is reduced as far as possible.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvement and modification can also be made, these are improved and modification is also regarded
For protection scope of the present invention.
Claims (4)
1. a kind of can reclaim the blast furnace slag air cushion processing method of high-quality waste heat, it is characterised in that the processing method is specific such as
Under：
Liquid blast furnace enters on the front end air cushion plate (12) of air cushion plate (8) from slag entrance (15), the front end air cushion plate
(12) right-hand member is provided with high-pressure water mist nozzle, and the liquid blast furnace is laterally blown into the air cushion with stomata of the air cushion plate (8)
On intermediate plate (13), the liquid blast furnace is tentatively cooled down, and the wind on the air cushion intermediate plate (13) with stomata will be described
Liquid blast furnace wind quenching is into fine granularity blast furnace slag, the high-pressure water mist shower nozzle above the air cushion intermediate plate (13) with stomata
(5) water smoke sprayed quickly cools down the fine granularity blast furnace slag, and the fine granularity blast furnace slag is in the gas with stomata
Travelled forward on pad intermediate plate (13), the fine granularity blast furnace slag is last from the grain slag positioned at the air cushion plate (8) rear end
Exit plate (14) is discharged, and the temperature of the fine granularity blast furnace slag is maintained at 300-700 DEG C, and the fine granularity blast furnace slag is used for
Cogeneration；Heated air and the steam produced are discharged by jet chimney (1) in processing, and heat recovery is subject into profit
With；The excessive water for a small amount of slag particle and the waterfog head sprinkling dropped in air cushion plate (8) course of conveying passes through slag water collector
(11) collect.
2. a kind of can reclaim the blast furnace slag air cushion processing unit of high-quality waste heat, it is characterised in that it is fast that the device includes water interlayer
Ice chest body (6), high-pressure water mist shower nozzle (5), air cushion plate (8), jet chimney (1), slag entrance (15) and slag water collector (11)；
The high-pressure water mist shower nozzle (5) is arranged on the top of the water interlayer rapid cooling casing (6)；The air cushion plate (8) is with the low right height in a left side
Angled manner, which is extended transversely through, to be arranged in the water interlayer rapid cooling casing (6), and the air cushion plate (8) is respectively front end from right to left
Air cushion plate (12), the air cushion intermediate plate (13) with stomata and grain slag exit plate (14), the air cushion plate (8) pass through air channel (10)
It is connected with blower fan (9), the grain slag exit plate (14) is located at the rear end of the air cushion plate (8), the grain slag exit plate
(14) it is used to grain slag transferring out device provided with conduit, the air cushion intermediate plate (13) with stomata is provided with a diameter of 1-
3mm stomata, the stomata spacing is 3-8mm, and adjacent two rounds Heterogeneous Permutation, the material requirements of the air cushion plate (8) can be held
By more than 800 DEG C temperature；The slag entrance (15) is arranged on above the front end air cushion plate (12)；The front end air cushion plate
(12) termination is provided with high-pressure water mist nozzle；The slag water collector (11) is arranged on a left side for the water interlayer rapid cooling casing (6)
Hold bottom；The jet chimney (1) is arranged on the side of the water interlayer rapid cooling casing (6).
3. it is according to claim 2 it is a kind of can reclaim the blast furnace slag air cushion processing unit of high-quality waste heat, its feature exists
Cooling water sandwich is configured with the water interlayer rapid cooling casing (6), the cooling water sandwich is used to ensure the water interlayer rapid cooling
Casing (6) internal face temperature is maintained at less than 300 DEG C；The water interlayer rapid cooling casing (6) is highly 1500mm~5500mm, institute
The cross section for stating water interlayer rapid cooling casing (6) is any square or circle, and water interlayer rapid cooling casing (6) length is 3000mm
~16000mm.
4. it is according to claim 2 it is a kind of can reclaim the blast furnace slag air cushion processing unit of high-quality waste heat, its feature exists
Often row shower nozzle in the high-pressure water mist shower nozzle (5) staggers arrangement, set 5-7 arrange between shower nozzle, adjacent two rows nozzle away from
From for 1000mm~5000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710319386.6A CN106939364A (en) | 2017-05-08 | 2017-05-08 | It is a kind of to reclaim the blast furnace slag air cushion processing method and processing device of high-quality waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710319386.6A CN106939364A (en) | 2017-05-08 | 2017-05-08 | It is a kind of to reclaim the blast furnace slag air cushion processing method and processing device of high-quality waste heat |
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| CN106939364A true CN106939364A (en) | 2017-07-11 |
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ID=59463281
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Application publication date: 20170711 |