CN208087651U - A kind of blast furnace slag air quenching microballon waste-heat recovery device - Google Patents
A kind of blast furnace slag air quenching microballon waste-heat recovery device Download PDFInfo
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- CN208087651U CN208087651U CN201820573008.0U CN201820573008U CN208087651U CN 208087651 U CN208087651 U CN 208087651U CN 201820573008 U CN201820573008 U CN 201820573008U CN 208087651 U CN208087651 U CN 208087651U
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- blast furnace
- microballon
- slag
- heat boiler
- air quenching
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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
Abstract
The utility model is related to a kind of blast furnace slag air quenching microballon waste-heat recovery devices, including air quenching granulating system and residual neat recovering system；The air quenching granulating system includes air quenching device at microballon of blast furnace, the high-temperature liquid state blast furnace slag air quenching for will be flowed out in blast furnace, the swinging slag particle coagulator for being molded and being cooled down to microballon that is connected with the gentle quenching device of blast furnace, and the residual neat recovering system includes the gentle fluid residual heat boiler of solid-liquid waste heat boiler；The tail portion top of the swinging slag particle coagulator is connected by multi-tube dust cleaner with gas-liquid waste heat boiler, and the bottom of gas-liquid waste heat boiler is connected by bag filter and air-introduced machine with chimney；The tail portion lower end of the swinging slag particle coagulator is connected by slag wool piece-rate system and slag particle movement system with the top of solid-liquid waste heat boiler.This waste-heat recovery device for being exclusively used in blast furnace slag disclosed in the utility model, transformation is convenient, can substantially recycle the high-quality waste heat of steel mill, and effects of energy saving and emission reduction is apparent, has higher economic benefit.
Description
Technical field
The utility model is related to blast furnace slag gas waste heat recovery fields, and in particular to a kind of blast furnace slag air quenching microballon waste heat recovery
Device.
Background technology
China is currently the maximum steel producing country in the whole world.China Steel yield keeps the first in the world for continuous 16 years, and
And lead and bounds ahead of other countries.Simultaneously with the production of China's blast furnace process, the blast furnace slag quantity containing abundant thermal energy of discharge
It is also huge, from energy saving with from the perspective of environmentally friendly and raising steel plant economic benefit, the heat of blast furnace slag is returned
It receives and the recycling of blast furnace slag is very necessary.The tapping temperature of blast furnace slag is generally between 1400~1550 DEG C.Often
Ton slag contains（1260~1880）×103The sensible heat of kJ is equivalent to the calorific value of 60kg standard coals.It often produces 1 ton of pig iron and wants by-product 0.3
Ton clinker and 0.13 ton of slag.It is calculated with 6.83 hundred million tons of the iron and steel output in current China, 2.9 hundred million tons or more of height can be generated
Clinker and vessel slag, sensible heat amount are equivalent to 17,400,000 tons of standard coals.Although not can all recycle the thermal energy of clinker, if
The partially recycled utilization of energy, energy-saving benefit are also significant, have very much market development potential.Water quenching skill is just widely applied at present
From the point of view of the case where art, this part high temperature heat source is clearly to be wasted.The high temperature heat source complies fully with height for temperature quality
The requirement of the grade energy enables it to re-use if this partial heat can be recycled, so that it may with for society and enterprise, bring can
Economy, society and the environmental benefit of sight.
The recycling for carrying out residual heat and energy is not only the weight that iron and steel enterprise is energy saving, reduces cost, improves competitiveness
Means are wanted, and also comply with the policy requirements of national steel and iron industry.It is bright in the steel and iron industry " 12th Five-Year Plan " development plan in China
It really points out clean manufacturing and circular economy to be greatly developed, actively researches and develops and promote the use of energy-saving and emission-reduction and low-carbon technology, reinforce
The comprehensive utilization of resources of waste.Following important indicator, unit industrial added value energy consumption are proposed in terms of energy-saving and emission-reduction
Declining 18% respectively with CO2 emission, emphasis statistics iron and steel enterprise be averaged ton steel comprehensive energy consumption less than 580 kilograms of standard coals,
Ton steel consumes new water and is less than 4.0 cubic metres, and ton steel sulfur dioxide (SO2) emissions decline 39%, and ton steel COD declines 7%, and solid is useless
97% or more gurry comprehensive utilization ratio.Emphasis refers to the sensible heats such as blast furnace slag, slag in terms of the energy-conserving and emission-cutting technology of steel and iron industry
Recovery and utilization technology, metallurgical slag comprehensive utilization technique and waste heat overbottom pressure comprehensive utilization technique etc..
The method of the common processing blast furnace slag in China has dry pit cooling method and flush slag method at present.Dry pit cooling method will
It is air-cooled that the blast furnace slag of melting pours into dry pit, water cooling after solidification.This method polluted underground water source, when cooling, release a large amount of vapor,
A large amount of hydrogen sulfide and sulfur dioxide gas are discharged simultaneously, and corrosion building destroys equipment and aggravating working environment, general only in thing
Therefore the method is used when handling.The blast furnace slag in China 90% all uses flush slag method to handle, and obtained grain slag is for producing cement, slag
Brick, slag micropowder and thermal insulating filling.Water quenching disadvantage：Heat quality loss is big, water consumption is big and pernicious gas is difficult to handle.
Utility model content
The utility model is intended to provide a kind of blast furnace slag air quenching microballon waste-heat recovery device, to solve to exist in the prior art
Deficiency, the technical problems to be solved in the utility model is achieved through the following technical solutions.
A kind of blast furnace slag air quenching microballon waste-heat recovery device, including air quenching granulating system and residual neat recovering system；Described
Air quenching granulating system include blast furnace, the high-temperature liquid state blast furnace slag air quenching for will be flowed out in blast furnace at microballon air quenching device, with
The connected swinging slag particle coagulator for being molded and being cooled down to microballon of the gentle quenching device of blast furnace, the waste heat return
Receipts system includes the gentle fluid residual heat boiler of solid-liquid waste heat boiler；The tail portion top of the swinging slag particle coagulator passes through multitube
Deduster is connected with gas-liquid waste heat boiler, and the bottom of gas-liquid waste heat boiler is connected by bag filter and air-introduced machine with chimney
Logical, the hot wind generated in granulation process enters gas-liquid from the tail portion top of swinging slag particle coagulator after multi-tube dust cleaner purifies
In waste heat boiler so transfer heat to after the water in boiler from the bottom of gas-liquid waste heat boiler successively through bag filter and
It is discharged from chimney after air-introduced machine；It is transported by slag wool piece-rate system and slag particle the tail portion lower end of the swinging slag particle coagulator
Transfer from one department to another system with the top of solid-liquid waste heat boiler to be connected, microballon is in swinging slag particle coagulator through slag wool segregative line after stable cooling
Satisfactory microballon is simultaneously transported in solid-liquid waste heat boiler by slag particle movement system and then transfers heat to pot by system screening
Water in stove, low temperature microballon after cooling are discharged from the bottom of solid-liquid waste heat boiler.
Preferably, the air quenching device includes air compressor machine, nozzle, pipeline pressure regulating valve, motor-operated control valve, startup
Regulating valve, flowmeter, pressure gauge, high-pressure gas pipelines, metal hose, flowmeter.
Preferably, the nozzle is Laval nozzle, and it is the micro- of 2mm that high-temperature liquid state blast furnace slag gas blowout can be blown out to grain size
Pearl.
Preferably, the Mach 2 ship 1.6 of nozzle.
Preferably, the slag wool separation of 1.5m is arranged in the swinging slag particle coagulator liner insulating and wear-resistant material, rear portion
Device, tail portion petticoat pipe are provided with slag particle buffer bin.
Preferably, setting inclined wire in the swinging slag particle coagulator rear portion filters the sub-sieve being combined with heat resisting steel roller screen
Device is ensureing the separation of high temperature sludge, cotton.
Preferably, the solid-liquid waste heat boiler is from fluidized bed waste heat boiler.
Preferably, the solid-liquid waste heat boiler uses acute angle membrane wall structure.
Preferably, further include electricity generation system, the steam generated from the gentle fluid residual heat boiler of solid-liquid waste heat boiler enters
For generating electricity in electricity generation system.
Preferably, the electricity generation system includes steam turbine, is generated from the gentle fluid residual heat boiler of solid-liquid waste heat boiler
Steam enter in steam turbine for generating electricity.
This waste-heat recovery device disclosed in the utility model, the direct air quenching granulating of high temperature blast furnace slag come out from blast furnace
Diameter is the uniform microballon of 2mm or so, and then the flue gas of high temperature and solid microballon respectively enter gas-liquid waste heat boiler and solid-liquid waste heat
Boiler directly recycles high-quality waste heat, generates steam and is used for industrial production and power generation, and the rock wool generated during air quenching can
For making thermal insulation material, the microballon of generation can be used for making amorphous refractory, and effects of energy saving and emission reduction is apparent, and with compared with
High economic value.
This waste-heat recovery device for being exclusively used in blast furnace slag disclosed in the utility model, transformation is convenient, can substantially return
The high-quality waste heat of steel mill is received, effects of energy saving and emission reduction is apparent, has higher economic benefit.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Reference numeral in attached drawing is followed successively by：1, blast furnace, 2, air compressor machine, 3, air quenching device, 4, swinging slag particle coagulator,
5, slag wool piece-rate system, 6, slag particle movement system, 7, solid-liquid waste heat boiler, 8, steam turbine, 9, gas-liquid waste heat boiler, 10, multitube
Deduster, 11, bag filter, 12, air-introduced machine, 13, chimney.
Specific implementation mode
The design feature of the utility model is expanded on further with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：A kind of blast furnace slag air quenching microballon waste-heat recovery device, including air quenching granulating system and waste heat recovery system
System；The air quenching granulating system include blast furnace 1, for by the high-temperature liquid state blast furnace slag air quenching of 1 inner outflow of blast furnace at microballon
Air quenching device 3 is solidified with the swinging slag particle for being molded and being cooled down to microballon that 1 gentle quenching device 3 of blast furnace is connected
Device 4, the residual neat recovering system include 7 gentle fluid residual heat boiler 9 of solid-liquid waste heat boiler；The swinging slag particle coagulator
4 tail portion top is connected by multi-tube dust cleaner 10 with gas-liquid waste heat boiler 9, and the bottom of gas-liquid waste heat boiler 9 is removed by cloth bag
Dirt device 11 and air-introduced machine 12 are connected with chimney 13, and the hot wind generated in granulation process is from the tail portion of swinging slag particle coagulator 4
Top enters in gas-liquid waste heat boiler 9 after the purification of multi-tube dust cleaner 10 and then transfers heat to after the water in boiler from gas-liquid
The bottom of waste heat boiler 9 is discharged after bag filter 11 and air-introduced machine 12 from chimney 13 successively；The swinging slag particle
The tail portion lower end of coagulator 4 is connected by slag wool piece-rate system 5 and slag particle movement system 6 with the top of solid-liquid waste heat boiler 7, micro-
Pearl sieves through slag wool piece-rate system 5 after stablizing cooling in swinging slag particle coagulator 4 and will be conformed to by slag particle movement system 6
The microballon asked is transported in solid-liquid waste heat boiler 7 and then transfers heat to the water in boiler, and low temperature microballon after cooling is from admittedly
The bottom of fluid residual heat boiler 7 is discharged.
Embodiment 2：It is further improved on the basis of embodiment 1, the air quenching device 3 includes air compressor machine 2, spray
Mouth, pipeline pressure regulating valve, motor-operated control valve, start regulating valve, flowmeter, pressure gauge, high-pressure gas pipelines, metal hose,
Flowmeter；The nozzle is Laval nozzle, and high-temperature liquid state blast furnace slag gas blowout can be blown out to the microballon that grain size is 2mm；Nozzle
Mach 2 ship 1.6.
Embodiment 3：It is further improved on the basis of embodiment 1 or 2, swinging slag particle 4 liners of coagulator are exhausted
The slag wool separator of 1.5m is arranged in hot wear-resistant material, rear portion, and tail portion petticoat pipe is provided with slag particle buffer bin.
Embodiment 4：It is further improved on the basis of embodiment 3,4 rear portion of swinging slag particle coagulator setting is oblique
Net filtration ensures the separation of high temperature sludge, cotton with the separating screen device that heat resisting steel roller screen is combined.
Embodiment 5：It is further improved on the basis of aforementioned any embodiment, the solid-liquid waste heat boiler 7 is gravity flow
Bed waste heat boiler simultaneously uses acute angle membrane wall structure.
Embodiment 6：It is further improved on the basis of aforementioned any embodiment, further includes electricity generation system, from solid-liquid waste heat
The steam generated in 7 gentle fluid residual heat boiler 9 of boiler enters in electricity generation system for generating electricity.
Embodiment 7：It is further improved on the basis of embodiment 6, the electricity generation system includes steam turbine 8, from admittedly
The steam generated in 7 gentle fluid residual heat boiler 9 of fluid residual heat boiler enters in steam turbine for generating electricity.
Compressed air is sprayed from air compressor machine 2, will be from the high-temperature liquid state blast furnace slag of 1 inner outflow of blast furnace by air quenching device 3
Air quenching is at particle, but microballon at this time is not also very stable, as high-pressure blast enters in swinging slag particle coagulator 4 together,
Carry out cooling and thoroughly molding.Difference can be set by adjusting the Laval nozzle in the gentle quenching device of compressed air parameter 3
The bead size of specification.Adjusting material is added during blast furnace slag flows simultaneously, ensures the uniformity of blast furnace slag granulating.
The high-pressure blast of granulation absorbs the heat of blast furnace slag, becomes 500 DEG C or so of hot wind, and the part hot wind is from revolution
The top of 4 tail portion of formula slag particle coagulator comes out, and passes heat into gas-liquid waste heat boiler 9 by the purification of multi-tube dust cleaner 10
It after passing the water in boiler, is discharged from the bottom of gas-liquid waste heat boiler 9, after bag filter 11 and air-introduced machine 12, enters
Chimney 13 is discharged into air.
Air quenching microballon is sieved after stablizing cooling in swinging slag particle coagulator 4 by the slag wool piece-rate system 5 of tail portion
Point, satisfactory microballon is transported to 7 top of solid-liquid waste heat boiler by slag particle movement system 6, is sent into solid-liquid waste heat boiler 7
Afterwards, microballon discharges self-contained sensible heat, passes to the water in solid-liquid waste heat boiler 7.Low temperature microballon is from solid-liquid waste heat boiler 7
Bottom is discharged, unified to collect, the raw material as amorphous refractory.
The steam come out from two boilers, which enters in steam turbine 8, to generate electricity, and low-pressure steam can be used for for warm industrial production.
In the present embodiment, the high temperature blast furnace slag come out from blast furnace 1 passes through air quenching device 3, and injection is the uniform of 2mm at grain size
Microballon, microballon enters in swinging slag particle coagulator 4 together along with high-pressure blast, solidifying by swinging slag particle after cooling and shaping
Gu the screening of the slag wool piece-rate system 5 of 4 tail portion of device, satisfactory microballon are transported to solid-liquid waste heat by slag particle movement system 6
7 top of boiler, after being sent into solid-liquid waste heat boiler 7, microballon discharges self-contained sensible heat, passes in solid-liquid waste heat boiler 7
Water.Low temperature microballon is discharged from 7 bottom of solid-liquid waste heat boiler, unified to collect, the raw material as amorphous refractory.It is granulated and uses
High-pressure blast absorb the heat of blast furnace slag, become 500 DEG C or so of hot wind, the part hot wind is from swinging slag particle coagulator 4
The top of tail portion comes out, and is transferred heat in boiler into gas-liquid waste heat boiler 9 by the purification of multi-tube dust cleaner 10
After water, it is discharged from the bottom of gas-liquid waste heat boiler 9, after bag filter 11 and air-introduced machine 12, is discharged into chimney 13
In air.The system directly recycles high-quality waste heat, and the steam generated by two kinds of boilers, which enters in steam turbine 8, to generate electricity.Hair
Low-pressure steam after electricity can be used for industrial production and heating again, and the rock wool generated during air quenching can be used for making thermal insulating material
Material, the microballon of generation can be used for making amorphous refractory, and effects of energy saving and emission reduction is notable, and have higher economic value.
Embodiment described above only expresses a kind of embodiment of the utility model, but can not therefore be interpreted as
Limitation to the scope of the utility model.It should be pointed out that for those of ordinary skill in the art, it is new not departing from this practicality
Under the premise of type is conceived, various modifications and improvements can be made.These belong to the scope of protection of the utility model.
Claims (10)
1. a kind of blast furnace slag air quenching microballon waste-heat recovery device, including air quenching granulating system and residual neat recovering system；Its feature exists
In：The air quenching granulating system includes blast furnace（1）, for by blast furnace（1）In the high-temperature liquid state blast furnace slag air quenching Cheng Wei that flows out
The air quenching device of pearl（3）With blast furnace（1）Gentle quenching device（3）The connected revolution for being molded and being cooled down to microballon
Formula slag particle coagulator（4）, the residual neat recovering system includes solid-liquid waste heat boiler（7）Gentle fluid residual heat boiler（9）；Described
Swinging slag particle coagulator（4）Tail portion top pass through multi-tube dust cleaner（10）With gas-liquid waste heat boiler（9）It is connected, gas-liquid waste heat
Boiler（9）Bottom pass through bag filter（11）And air-introduced machine（12）With chimney（13）It is connected, is generated in granulation process
Hot wind is from swinging slag particle coagulator（4）Tail portion top through multi-tube dust cleaner（10）Enter gas-liquid waste heat boiler after purification（9）
In so transfer heat to after the water in boiler from gas-liquid waste heat boiler（9）Bottom successively through bag filter（11）With draw
Wind turbine（12）Afterwards from chimney（13）Middle discharge；The swinging slag particle coagulator（4）Tail portion lower end pass through slag wool segregative line
System（5）With slag particle movement system（6）With solid-liquid waste heat boiler（7）Top be connected, microballon is in swinging slag particle coagulator（4）In
Through slag wool piece-rate system after stable cooling（5）It sieves and by slag particle movement system（6）Satisfactory microballon is transported to solid-liquid
Waste heat boiler（7）In so transfer heat to water in boiler, low temperature microballon after cooling is from solid-liquid waste heat boiler（7）Bottom
Portion is discharged.
2. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 1, it is characterised in that：The air quenching
Device（3）It include air compressor machine（2）, nozzle, pipeline pressure regulating valve, motor-operated control valve, start regulating valve, flowmeter, pressure
Table, high-pressure gas pipelines, metal hose, flowmeter.
3. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 2, it is characterised in that：The nozzle
For Laval nozzle, high-temperature liquid state blast furnace slag gas blowout can be blown out to the microballon that grain size is 2mm.
4. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 3, it is characterised in that：The Mach of nozzle
Number is 1.6.
5. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 1, it is characterised in that：The revolution
Formula slag particle coagulator（4）The slag wool separator of 1.5m is arranged in liner insulating and wear-resistant material, rear portion, and tail portion petticoat pipe is provided with slag particle
Buffer bin.
6. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 5, it is characterised in that：The revolution
Formula slag particle coagulator（4）Setting inclined wire filtering in rear portion ensures high temperature sludge, cotton with the separating screen device that heat resisting steel roller screen is combined
Separation.
7. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 1, it is characterised in that：The solid-liquid
Waste heat boiler（7）For from fluidized bed waste heat boiler.
8. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 7, it is characterised in that：The solid-liquid
Waste heat boiler（7）Using acute angle membrane wall structure.
9. according to a kind of any blast furnace slag air quenching microballon waste-heat recovery devices of claim 1-8, it is characterised in that：Also wrap
Electricity generation system is included, from solid-liquid waste heat boiler（7）Gentle fluid residual heat boiler（9）The steam of middle generation, which enters in electricity generation system, to be used for
Power generation.
10. a kind of blast furnace slag air quenching microballon waste-heat recovery device according to claim 9, it is characterised in that：The hair
Electric system includes steam turbine（8）, from solid-liquid waste heat boiler（7）Gentle fluid residual heat boiler（9）The steam of middle generation enters vapour
For generating electricity in turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820573008.0U CN208087651U (en) | 2018-04-21 | 2018-04-21 | A kind of blast furnace slag air quenching microballon waste-heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820573008.0U CN208087651U (en) | 2018-04-21 | 2018-04-21 | A kind of blast furnace slag air quenching microballon waste-heat recovery device |
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| CN208087651U true CN208087651U (en) | 2018-11-13 |
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ID=64055723
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277311A (en) * | 2018-04-21 | 2018-07-13 | 唐山金沙燃烧热能股份有限公司 | A kind of blast furnace slag air quenching microballon waste-heat recovery device |
| CN113322360A (en) * | 2020-02-28 | 2021-08-31 | 宝山钢铁股份有限公司 | Blast furnace slag granulation and waste heat recovery device and method |
-
2018
- 2018-04-21 CN CN201820573008.0U patent/CN208087651U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277311A (en) * | 2018-04-21 | 2018-07-13 | 唐山金沙燃烧热能股份有限公司 | A kind of blast furnace slag air quenching microballon waste-heat recovery device |
| CN113322360A (en) * | 2020-02-28 | 2021-08-31 | 宝山钢铁股份有限公司 | Blast furnace slag granulation and waste heat recovery device and method |
| WO2021169589A1 (en) * | 2020-02-28 | 2021-09-02 | 宝山钢铁股份有限公司 | Blast furnace slag granulation and waste heat recovery and utilization device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A waste heat recovery device for blast furnace slag gas quenching micro bead Effective date of registration: 20210624 Granted publication date: 20181113 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd. Registration number: Y2021990000552 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221111 Granted publication date: 20181113 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2021990000552 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |