CN103667553A - Blast furnace slag waste heat recovery device - Google Patents
Blast furnace slag waste heat recovery device Download PDFInfo
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- CN103667553A CN103667553A CN201310675272.7A CN201310675272A CN103667553A CN 103667553 A CN103667553 A CN 103667553A CN 201310675272 A CN201310675272 A CN 201310675272A CN 103667553 A CN103667553 A CN 103667553A
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- slag
- liquid slag
- superheater
- boiler
- waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention discloses a blast furnace slag waste heat recovery device, which can recycle the blast furnace slag waste heat. The device comprises a vibrated fluidized bed, wherein a fluidized bed fan is arranged at an air inlet of the vibrated fluidized bed; the device further comprises a waste heat boiler and a superheater, wherein the boiler smoke intake of the waste heat boiler is connected with an air outlet of the vibrated fluidized bed, and the boiler steam outlet of the waste heat boiler is connected with a steam inlet of the superheater; a liquid slag treatment device for conveying hot smoke to a smoke inlet of the superheater is arranged under the smoke inlet of the superheater, the liquid slag treatment device comprises a liquid slag blower and an air bellow which is used for conveying the air flow generated by the liquid slag blower, the air bellow is internally provided with a granulating motor, the granulating motor is connected with a liquid slag granulating rotary table, the corresponding air bellow under the liquid slag granulating rotary table is provided with a plurality of blowing holes, and the liquid slag treatment device further comprises a feed mechanism for conveying the liquid slag to the liquid slag granulating rotary table, and a slag discharge port facing towards a feed port of the vibrated fluidized bed.
Description
Technical field
The present invention relates to waste-heat recovery device, relate in particular to blast furnace slag waste-heat recovery device.
Background technology
Blast furnace slag is one of primary product producing in steel manufacture process, is also a kind of highly beneficial secondary resource with being worth.To the processing of blast furnace slag, is at present generally water quenching, reduces the temperature of blast furnace slag through fetching water, be sent to cement mill or Building Materials Factory after cooling and do material of construction and use, heat does not utilize.Blast furnace slag tapping temperature is generally 1450 ℃ of left and right, the about 30kg standard coal of the available heat of blast furnace slag per ton, and one ton of pig iron of every smelting can produce 300 to 500kg blast furnace slags.Reclaim the guestimate of one ton of blast furnace slag waste heat and can generate 100 degree electricity.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of blast furnace slag waste-heat recovery device that can recycle blast furnace slag waste heat.
The technical solution adopted for the present invention to solve the technical problems is: blast furnace slag waste-heat recovery device, involving vibrations fluidized-bed, described vibrated fluidized bed comprises blast inlet, air outlet, opening for feed and discharge port, the blast inlet place of vibrated fluidized bed is provided with fluidized-bed blower fan, also comprise waste heat boiler and superheater, on waste heat boiler, be provided with boiler feed water mouth, boiler smoke import, boiler exhaust gas outlet and Boiler Steam outlet, on superheater, be provided with steam-in, superheated vapour outlet, the outlet of superheater tail gas and superheater gas approach, the boiler smoke import of waste heat boiler is connected with the air outlet of vibrated fluidized bed, the Boiler Steam outlet of waste heat boiler is connected with the steam-in of superheater, the below of superheater gas approach is provided with for carry the treatment device of liquid slag of hot flue gas to superheater gas approach, treatment device of liquid slag comprises liquid slag blower and the wind pushing box of the air-flow that produces for delivery of liquid slag blower, in wind pushing box, be provided with granulation motor, granulation motor is connected with the liquid slag granulation rotating disk that is positioned at wind pushing box outside, on the wind pushing box of liquid slag granulation rotating disk below correspondence, be provided with a plurality of blowhole, treatment device of liquid slag also comprises for the feed mechanism to liquid slag granulation rotating disk delivering liquid slag and towards the receipts slag slag releasing channel of the opening for feed of vibrated fluidized bed, receipts slag slag releasing channel is positioned at the below of wind pushing box.
Further: boiler exhaust gas outlet and the outlet of superheater tail gas are connected with engine manifold respectively, and engine manifold is connected with device for recovering tail gas.
Further: described device for recovering tail gas comprises cleaning apparatus and the exhaust blower being connected with the exhaust outlet of cleaning apparatus.
Further: described liquid slag granulation rotating disk comprises a disk body, disk body inside is circumferentially arranged at intervals with a plurality of lonely shape plates along disk body, and each arc extends to disk body edge by disk body central authorities.
The invention has the beneficial effects as follows: heat recovery that not only can be to blast furnace slag, and also utilization ratio is higher.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of blast furnace slag waste-heat recovery device of the present invention;
Fig. 2 is the schematic diagram of wind pushing box;
Fig. 3 is the schematic diagram of liquid slag granulation rotating disk;
Fig. 4 is lonely shape plate set-up mode schematic diagram;
In figure, be labeled as: feed mechanism 1, liquid slag granulation rotating disk 2, granulation motor 3, wind pushing box 4, liquid slag blower 5, vibrated fluidized bed 6, fluidized-bed blower fan 7, superheater 8, waste heat boiler 9, steam-in 10, superheated vapour outlet 11, double-edged fine-toothed comb 12, discharge port 13, receive slag slag releasing channel 14, boiler feed water mouth 15, exhaust blower 16, cleaning apparatus 17, blowhole 18, hole 19, lonely shape plate 20, opening for feed 21, air outlet 22, boiler smoke import 23, boiler exhaust gas outlet 24, superheater tail gas outlet 25, engine manifold 26, blast inlet 27, Boiler Steam outlet 28, superheater gas approach 29.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figures 1 to 4, blast furnace slag waste-heat recovery device of the present invention, involving vibrations fluidized-bed 6, described vibrated fluidized bed 6 comprises blast inlet 27, air outlet 22, opening for feed 21 and discharge port 13, blast inlet 27 places of vibrated fluidized bed 6 are provided with fluidized-bed blower fan 7, also comprise waste heat boiler 9 and superheater 8, on waste heat boiler, be provided with boiler feed water mouth 15, boiler smoke import 23, boiler exhaust gas outlet 24 and Boiler Steam outlet 28, on superheater, be provided with steam-in 10, superheated vapour outlet 11, the outlet 25 of superheater tail gas and superheater gas approach 29, the boiler smoke import 23 of waste heat boiler is connected with the air outlet 22 of vibrated fluidized bed, the Boiler Steam outlet 28 of waste heat boiler is connected with the steam-in 10 of superheater, the below of superheater gas approach 29 is provided with for carry the treatment device of liquid slag of hot flue gas to superheater gas approach, treatment device of liquid slag comprises liquid slag blower 5 and the wind pushing box 4 of the air-flow that produces for delivery of liquid slag blower, in wind pushing box 4, be provided with granulation motor 3, granulation motor 3 is connected with the liquid slag granulation rotating disk 2 that is positioned at wind pushing box 4 outsides, on the wind pushing box 4 of liquid slag granulation rotating disk 2 below correspondences, be provided with a plurality of blowhole 18, treatment device of liquid slag also comprises for the feed mechanism 1 to liquid slag granulation rotating disk 2 delivering liquid slags and towards the receipts slag slag releasing channel 14 of the opening for feed 21 of vibrated fluidized bed, receipts slag slag releasing channel 14 is positioned at the below of wind pushing box 4.Above-mentioned receipts slag slag releasing channel can comprise that connects a slag container and be arranged on the slag notch connecing on slag container, can be also one and connect slag inclined-plane, and the lower end that connects slag inclined-plane is slag notch, also can be provided for scraping the slag scraping mechanism of slag etc.Because granulation motor 3 is arranged on the inside of wind pushing box 4, can be subject to the protection of wind pushing box 4.The setting of wind pushing box can be with reference to figure 2, and wind pushing box 4 can comprise a casing, and one section of casing is for water conservancy diversion, and another section of casing is used for taking up granulation motor 3, and the motor shaft of granulation motor 3 can be passed by hole 19, and the air-flow in casing can be blown out by each blowhole 18.Certainly, wind pushing box 4 can also be other structure, as long as possess above-mentioned functions.The embodiment of above-mentioned feed mechanism 1 has multiple, for example, can comprise a feeding channel, also can comprise as shown in Figure 1 a funnel and a flow-guiding channel, and liquid slag drops on liquid slag granulation rotating disk 2 after entering flow-guiding channel by funnel.Above-mentioned each structure can fixedly mount by corresponding frame.
When said apparatus is used: liquid slag can be delivered to liquid slag granulation rotating disk 2 by feed mechanism 1, liquid slag granulation rotating disk 2 rotation under granulation motor 3 drives, because the effect of centrifugal force makes liquid slag can be thrown to the outside of liquid slag granulation rotating disk 2, when being thrown out of, liquid slag can form one by one less particulate state, cooling formation solid granulates under the cold wind that these liquid small-particles blow out in the blowhole 18 of wind pushing box 4, after cold wind and liquid small-particle heat exchange, become hot blast and flow in superheater 8 by above-mentioned superheater gas approach 29, cold wind in wind pushing box 4 is from liquid slag blower 5.Above-mentioned solid granulates falls and enters vibrated fluidized bed 6 by receiving the opening for feed 21 of slag slag releasing channel 14 and vibrated fluidized bed.These solid granulates still have certain temperature, these solid granulates carry out heat exchange with the cold wind that fluidized-bed blower fan 7 produces in vibrated fluidized bed, the hot blast forming after heat exchange can enter in waste heat boiler 9, and solid granulates moves towards discharge port 13 gradually under the effect of the mechanisms such as double-edged fine-toothed comb 12 and vibrating motor, and finally by discharge port 13, discharged.Above-mentioned vibrated fluidized bed can be applied vibrated fluidized bed of the prior art.Boiler feed water mouth 15 places on waste heat boiler 9 can pass into water, preferably pass into de-mineralized water, and water enters the heat by waste heat boiler inside after waste heat boiler and forms water vapour, and water vapour enters superheater 8 by Boiler Steam outlet 28 and steam-in 10.The principle of work of above-mentioned waste heat boiler 9 is identical with the principle of work of waste heat boiler of the prior art.Steam forms superheated vapour by the heat in superheater 8 after entering superheater 8, and by superheated vapour, exporting 11 can derive these superheated vapours for resident or industrial application.Wherein, for can make hot blast that treatment device of liquid slag produces faster and more enter superheater, treatment device of liquid slag can together be arranged in a cavity with superheater, as shown in Figure 1, after the hot blast rising that can make like this treatment device of liquid slag produce, can only enter in superheater, and the solid granulates producing is also convenient to concentrate whereabouts to collect and enter in vibrated fluidized bed 6.
The present invention has not only utilized high-grade waste heat of liquid blast furnace, and low-grade waste heat of solid-state blast furnace slag is also used.This just makes device of the present invention very high to the recovery utilization rate of the waste heat of blast furnace slag.
On the basis of the above, for the tail gas producing is focused on, prevent from environment to pollute, as shown in Figure 1, boiler exhaust gas outlet 24 and superheater tail gas outlet 25 are connected with engine manifold 26 respectively, and engine manifold 26 is connected with device for recovering tail gas.The tail gas that superheater and waste heat boiler produce can enter device for recovering tail gas by engine manifold 26 and process.Avoid being directly discharged to contaminate environment in environment.The embodiment of above-mentioned device for recovering tail gas has multiple, can utilize device for recovering tail gas of the prior art, and for example described device for recovering tail gas comprises cleaning apparatus 17 and the exhaust blower 16 being connected with the exhaust outlet of cleaning apparatus 17.After dust in tail gas can being removed by cleaning apparatus, by exhaust blower 16, discharge again, can reduce tail gas pollution like this.Certainly can also process tail gas with devices such as tail gas absorbers.
Above-mentioned liquid slag granulation rotating disk 2 can comprise a disk body, some prominences can also be set on disk body for separating liquid slag.As shown in Figure 3 and Figure 4; in order to make liquid blast furnace form more smoothly less liquid particles; described liquid slag granulation rotating disk 2 comprises a disk body, and disk body inside is circumferentially arranged at intervals with a plurality of lonely shape plates 20 along disk body, and each arc 20 extends to disk body edge by disk body central authorities.Liquid blast furnace can clash into arc 20, then disperses to form less liquid particles, is then thrown out of.
Claims (4)
1. blast furnace slag waste-heat recovery device, involving vibrations fluidized-bed (6), described vibrated fluidized bed (6) comprises blast inlet (27), air outlet (22), opening for feed (21) and discharge port (13), the blast inlet (27) of vibrated fluidized bed (6) locates to be provided with fluidized-bed blower fan (7), it is characterized in that:
Also comprise waste heat boiler (9) and superheater (8), on waste heat boiler, be provided with boiler feed water mouth (15), boiler smoke import (23), boiler exhaust gas outlet (24) and Boiler Steam outlet (28), on superheater, be provided with steam-in (10), superheated vapour outlet (11), the outlet of superheater tail gas (25) and superheater gas approach (29), the boiler smoke import (23) of waste heat boiler is connected with the air outlet (22) of vibrated fluidized bed, and the Boiler Steam outlet (28) of waste heat boiler is connected with the steam-in (10) of superheater;
The below of superheater gas approach (29) is provided with for carry the treatment device of liquid slag of hot flue gas to superheater gas approach, treatment device of liquid slag comprises liquid slag blower (5) and the wind pushing box (4) of the air-flow that produces for delivery of liquid slag blower, in wind pushing box (4), be provided with granulation motor (3), granulation motor (3) the liquid slag granulation rotating disk (2) outside with being positioned at wind pushing box (4) is connected, on the wind pushing box (4) of liquid slag granulation rotating disk (2) below correspondence, be provided with a plurality of blowhole (18), treatment device of liquid slag also comprises for the feed mechanism (1) to liquid slag granulation rotating disk (2) delivering liquid slag and towards the receipts slag slag releasing channel (14) of the opening for feed (21) of vibrated fluidized bed, receipts slag slag releasing channels (14) are positioned at the below of wind pushing box (4).
2. blast furnace slag waste-heat recovery device as claimed in claim 1, is characterized in that: boiler exhaust gas outlet (24) and superheater tail gas outlet (25) are connected with engine manifold (26) respectively, and engine manifold (26) is connected with device for recovering tail gas.
3. blast furnace slag waste-heat recovery device as claimed in claim 2, is characterized in that: described device for recovering tail gas comprises cleaning apparatus (17) and the exhaust blower (16) being connected with the exhaust outlet of cleaning apparatus (17).
4. the blast furnace slag waste-heat recovery device as described in claim 1,2 or 3; it is characterized in that: described liquid slag granulation rotating disk (2) comprises a disk body; disk body inside is circumferentially arranged at intervals with a plurality of lonely shape plates (20) along disk body, and each arc (20) extends to disk body edge by disk body central authorities.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310675272.7A CN103667553B (en) | 2013-12-11 | 2013-12-11 | Blast furnace slag waste heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310675272.7A CN103667553B (en) | 2013-12-11 | 2013-12-11 | Blast furnace slag waste heat recovery device |
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| CN103667553A true CN103667553A (en) | 2014-03-26 |
| CN103667553B CN103667553B (en) | 2016-01-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779673A (en) * | 2016-05-09 | 2016-07-20 | 于良富 | Blast furnace slag thermal fracture centrifugal drying method granulation device and method |
| CN116693304A (en) * | 2023-05-09 | 2023-09-05 | 广东博晖智能装备有限公司 | Ceramic tile powder, preparation method thereof and ceramic tile |
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| CN102140016A (en) * | 2011-02-21 | 2011-08-03 | 重庆大学 | High-temperature liquid material granulation and heat recovery system |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102690908A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Heat recovery system and heat recovery process of blast-furnace slag by dry granulation |
| CN102690910A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Dry-method treatment and waste heat continuous utilization system for blast-furnace slag |
| CN202543226U (en) * | 2012-02-23 | 2012-11-21 | 北京硕人海泰能源科技有限公司 | Sensible heat recovery and afterheat utilization system for blast furnace slag |
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2013
- 2013-12-11 CN CN201310675272.7A patent/CN103667553B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140016A (en) * | 2011-02-21 | 2011-08-03 | 重庆大学 | High-temperature liquid material granulation and heat recovery system |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN202543226U (en) * | 2012-02-23 | 2012-11-21 | 北京硕人海泰能源科技有限公司 | Sensible heat recovery and afterheat utilization system for blast furnace slag |
| CN102690908A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Heat recovery system and heat recovery process of blast-furnace slag by dry granulation |
| CN102690910A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Dry-method treatment and waste heat continuous utilization system for blast-furnace slag |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779673A (en) * | 2016-05-09 | 2016-07-20 | 于良富 | Blast furnace slag thermal fracture centrifugal drying method granulation device and method |
| CN116693304A (en) * | 2023-05-09 | 2023-09-05 | 广东博晖智能装备有限公司 | Ceramic tile powder, preparation method thereof and ceramic tile |
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| CN103667553B (en) | 2016-01-27 |
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