CN203159633U - Device for efficiently utilizing blast furnace slag sensible heat - Google Patents
Device for efficiently utilizing blast furnace slag sensible heat Download PDFInfo
- Publication number
- CN203159633U CN203159633U CN2013200987796U CN201320098779U CN203159633U CN 203159633 U CN203159633 U CN 203159633U CN 2013200987796 U CN2013200987796 U CN 2013200987796U CN 201320098779 U CN201320098779 U CN 201320098779U CN 203159633 U CN203159633 U CN 203159633U
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- sensible heat
- slag
- furnace slag
- fluidized bed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000002893 slag Substances 0.000 title abstract description 35
- 239000011400 blast furnace cement Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 101700005059 bed-3 Proteins 0.000 description 5
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000011030 bottleneck Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910000499 pig iron Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/076—Fluidised bed for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
-
- 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
Abstract
The utility model relates to a device for efficiently utilizing blast furnace slag sensible heat. The device is characterized by comprising a blast furnace (1), a circulating fluid bed (3) and a steam turbine (5), wherein a sealed flow chute (2) is arranged at an outlet of the blast furnace (1) and an inlet of the circulating fluid bed (3); the upper part of the circulating fluid bed (3) is connected with the steam turbine (5); and the circulating fluid bed (3) is provided with a secondary air port (6) and a feed port (7). The device for efficiently utilizing blast furnace slag sensible heat has the advantages that under the condition that recycling utilization of blast furnace slag is ensured, the sensible heat of hot molten slag is used as much as possible, and relatively good economic benefit and environmental benefit are achieved.
Description
Technical field
The utility model relates to a kind of device that utilizes blast-furnace cement sensible heat.The field that belongs to UTILIZATION OF VESIDUAL HEAT IN.
Background technology
At present, iron and steel enterprise whenever produces 1 ton of pig iron and produces the 300kg liquid blast furnace approximately in blast furnace production process, and the temperature of these hot slag is about 1400 ~ 1600 ℃, and hot slag per ton contains the sensible heat of 1700MJ approximately, is equivalent to the calorific value of 58kg standard coal.With 1 3200m
3Blast furnace be example, per hour produce the 100t hot slag approximately, be equivalent to the calorific value of 5.8t standard coal, be enough to produce the high-grade steam of 40t/h.From the eighties in 20th century, in the world some developed countries as Japan, the U.S., Britain, Germany etc. just from the angle of energy-conservation and environmental protection, active development hot slag sensible heat resource.At present the sensible heat recovery method of hot slag roughly is divided into two classes: a class is to utilize recirculated air to reclaim the slag sensible heat, reclaims sensible heat by waste heat boiler with the form of steam then, as the wind method of quenching; Another kind of is that high temperature furnace slag is injected in the container, and around container cools off with water cycle, reclaims the slag sensible heat with vapor form, as annular bed method.No matter above-mentioned which kind of method still is in the type approval test stage at present abroad, its heat recuperation rate reaches as high as about 70%, but because economic return is relatively poor, the equipment enlarging difficulty is bigger, all sensible heat utilization technology all fail to realize industrial applications.Most of Steel Plant of China then adopt water quenching, and hot slag is at high temperature handled with the water at low temperature chilling, obtain the high added value slag particle of 90% above vitrifying rate, for the additive of products such as cement.The shortcoming of water quenching is: the sensible heat of blast furnace slag can't utilize, and causes a large amount of wastes of water resources, and atmosphere, water and soil earth have also been caused pollution in various degree, aggravating working environment.Therefore, it is the technical bottleneck that the Sustainable development of present steel industry demands urgently breaking through that blast furnace slag granulation and efficient higher-grade sensible heat reclaim, and also is the focus of China's energy-saving and emission-reduction.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of device that efficiently utilizes blast-furnace cement sensible heat is provided, and solves the unserviceable problem of blast-furnace cement sensible heat, solves the various pollution problems that existing water quenching exists simultaneously.
The purpose of this utility model is achieved in that a kind of device that efficiently utilizes blast-furnace cement sensible heat, it comprises blast furnace, circulating fluidized bed and steam turbine, be provided with the sealing chute in the exit of described blast furnace and the ingress of circulating fluidized bed, described circulating fluidized bed top links to each other with steam turbine, and described circulating fluidized bed is provided with overfiren air port and material inlet.
The hot slag more than 1400 ℃ that blast furnace is discharged is by the bottom of introducing circular fluid bed by the sealing chute; upwards sent into through air distribution plate by the blast furnace bottom by pressurized air; high-speed air is with hot slag winding-up, granulation; the sensible heat of hot slag is brought burner hearth inside into by air and grain slag; and pass to the water pipe heating surface of burner hearth internal layout; sensible heat more than 90% is all changed into the superheated vapour of High Temperature High Pressure by hot slag, send into steam turbine power generation.
Velocity of compressed air and pressure can be according to the flow adjustment of hot slag, to guarantee the effect of hot slag granulation.Because blast furnace slag is to discharge from blast furnace off and on, in order to realize the continuity of boiler producing steam, on blast furnace 1, also be provided with an overfiren air port 6 and a material inlet 7, when blast furnace slag interruption or decrement, can pass through the material inlet postcombustion, increase combustion air at overfiren air port simultaneously, continuous, stable to guarantee the burner hearth internal heat resource.
Compared with prior art, the utlity model has following beneficial effect:
1, the hot slag sensible heat that is interrupted is converted into continuous superheated vapour, and generating;
2, hot slag is admitted to burner hearth fully, sensible heat utilization rate height;
3, hot slag compressed air quick cooling at high temperature, slag particleization is effective, and diameter is even, and glassy phase can be used in productions such as cement fully greater than 90% in the product;
4, in circulating fluidized bed inside, grain slag and burner hearth internal surface good effect of heat exchange, equipment investment cost is low.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: blast furnace 1
Sealing chute 2
Circulating fluidized bed 3
Pressurized air 4
Steam turbine 5
Overfiren air port 6
Material inlet 7.
Embodiment
Referring to Fig. 1, the utility model relates to a kind of device that efficiently utilizes blast-furnace cement sensible heat, comprise blast furnace 1, circulating fluidized bed 3 and steam turbine 5, be provided with sealing chute 2 in the exit of described blast furnace 1 and the ingress of circulating fluidized bed 3, the top of described circulating fluidized bed 3 links to each other with steam turbine 5, and described circulating fluidized bed 3 is provided with overfiren air port 6 and material inlet 7.
Certain blast furnace is 3200m
3, on average per hour produce the 100t hot slag approximately, to slag tap once in per 2.5 hours, the time length of slagging tap is 2 hours, interrupts 0.5 hour.After adopting the utility model, 90% hot slag sensible heat is converted into superheated vapour, when slagging tap interruption, replenish with steel mill's blast furnace gas, circular fluid bed per hour produces higher-grade superheated vapour 42t, the scale of auxiliary generator group is 8MW, calculates with the electricity price of 0.5 yuan/kWh, and annual income can reach 3,200 ten thousand yuan.Under the prerequisite of the use value that does not influence grain slag, can also avoid water resource waste and environmental pollution, not only had high economic benefit, but also good environmental benefit arranged.
Claims (1)
1. device that efficiently utilizes blast-furnace cement sensible heat, it is characterized in that it comprises blast furnace (1), circulating fluidized bed (3) and steam turbine (5), be provided with sealing chute (2) in the exit of described blast furnace (1) and the ingress of circulating fluidized bed (3), described circulating fluidized bed (3) top links to each other with steam turbine (5), and described circulating fluidized bed (3) is provided with overfiren air port (6) and material inlet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200987796U CN203159633U (en) | 2013-03-05 | 2013-03-05 | Device for efficiently utilizing blast furnace slag sensible heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200987796U CN203159633U (en) | 2013-03-05 | 2013-03-05 | Device for efficiently utilizing blast furnace slag sensible heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159633U true CN203159633U (en) | 2013-08-28 |
Family
ID=49020832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200987796U Withdrawn - After Issue CN203159633U (en) | 2013-03-05 | 2013-03-05 | Device for efficiently utilizing blast furnace slag sensible heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203159633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160624A (en) * | 2013-03-05 | 2013-06-19 | 江苏一同环保工程技术有限公司 | Device for using sensible heat of blast furnace slag with high efficiency |
| CN106636501A (en) * | 2017-02-27 | 2017-05-10 | 安徽工业大学 | Blast furnace slag granulation engine |
-
2013
- 2013-03-05 CN CN2013200987796U patent/CN203159633U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160624A (en) * | 2013-03-05 | 2013-06-19 | 江苏一同环保工程技术有限公司 | Device for using sensible heat of blast furnace slag with high efficiency |
| CN103160624B (en) * | 2013-03-05 | 2015-02-11 | 江苏一同环保工程技术有限公司 | Device for using sensible heat of blast furnace slag with high efficiency |
| CN106636501A (en) * | 2017-02-27 | 2017-05-10 | 安徽工业大学 | Blast furnace slag granulation engine |
| CN106636501B (en) * | 2017-02-27 | 2019-03-05 | 安徽工业大学 | A kind of blast furnace slag granulation engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |