CN207210462U - Energy-saving power generation system for sensible heat recovery of slag and molten iron residues in blast furnace casting house - Google Patents
Energy-saving power generation system for sensible heat recovery of slag and molten iron residues in blast furnace casting house Download PDFInfo
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- CN207210462U CN207210462U CN201720455982.2U CN201720455982U CN207210462U CN 207210462 U CN207210462 U CN 207210462U CN 201720455982 U CN201720455982 U CN 201720455982U CN 207210462 U CN207210462 U CN 207210462U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 306
- 239000002893 slag Substances 0.000 title claims abstract description 139
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 238000010248 power generation Methods 0.000 title claims abstract description 11
- 238000005266 casting Methods 0.000 title abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 153
- 238000001816 cooling Methods 0.000 claims abstract description 95
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 36
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 20
- 230000008016 vaporization Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 12
- 230000000740 bleeding effect Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract 7
- 239000000779 smoke Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
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- 238000005265 energy consumption Methods 0.000 description 5
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- 230000003628 erosive effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
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- 238000012546 transfer Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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- 238000005245 sintering Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
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- 238000009628 steelmaking Methods 0.000 description 1
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Classifications
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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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a blast furnace casting house slag molten iron residual sensible heat recovery energy-saving power generation system, which comprises a furnace body, a cooling system, a residual heat recovery boiler system and a saturated steam power generation system, wherein the furnace body is connected with a main ditch, and the main ditch is connected with a slag molten iron ditch; the iron slag runner comprises a slag runner and an iron branch runner, and the main runner is connected with the iron branch runner through a sand mouth; the upper part of the slag iron runner is provided with a movable dustproof smoke hood steel shell, and the lower part of the slag iron runner is provided with a slag iron runner steel shell; the inner side of the slag iron runner steel shell is provided with a slag iron runner refractory material permanent layer; a slag iron runner refractory material protective layer is arranged on the inner side of the slag iron runner refractory material permanent layer; the inner side of the slag iron runner refractory material protective layer is provided with a slag iron runner refractory material working layer; and a slag iron runner corrosion detection device is arranged between the slag iron runner refractory material working layer and the slag iron runner refractory material permanent layer. The utility model can achieve the beneficial effect of fully recycling and utilizing the high-temperature waste heat resources of the slag and the molten iron of the blast furnace casting house.
Description
Technical field
The utility model belongs to blast-furnace technique field, more particularly to Exposure degree energy-saving power generation more than blast furnace discharge yard slag iron water
System.
Background technology
Iron and steel enterprise belongs to resource, energy intensive industry includes the production work such as sintering, blast furnace, steel-making, steel rolling and auxiliary material
Sequence flow, it is energy consumption rich and influential family, accounts for the 16% of national energy consumption, wherein blast furnace ironmaking accounts for the 70% of smelting iron and steel total energy consumption, blast furnace
Ironmaking is formed a connecting link in integrated iron and steel works, locates very important status.Wherein, the big-and-middle blast furnace discharge yard slag in home and abroad, iron
Water complementary energy (sensible heat) resource recycling is studied and application still belongs to blank.
Integrated iron and steel works are generally more big-and-middle-sized blast furnace (group) tissue production at present, are all provided with production per seat height stove
In respect of 2~4 iron mouths, configured with the cast house that more iron mouths are adapted, it is domestic typically using annular (peninsula) or rectangular cast house
Two kinds of arrangements, cast house is planarized, Design of Dust-removing System its working area is big, between two iron mouths is in mitre degree
The improvement of (90 DEG C or 75.8 DEG C) arrangements and stokehold environment, slag, trough add up total length more than hundreds of meters, each
Slag iron ditch is completely independent, and is highly convenient for the collection of each cast house waste heat energy.
Modern big-and-middle blast furnace discharge yard is flat type, is easy to provide the security of mechanized operation and production, and blast furnace is whole
Slag iron ditch and operculum colpi are typically all located at below flat surface, and slag iron ditch is the passage that slag iron is discharged in time, are slagged tap in blast furnace taphole, iron
Or wait when tapping a blast furnace, the high temperature that used exotic material is carried in the fixation iron master of cast house, Zhigou and slag runner is equal
Prevented more than 1400 DEG C, and on slag iron ditch the movable dust-proof heat-insulated lid surface temperature of the excessive discharge of flue dust also 800~
Therefore, the huge abundant thermal source of blast furnace discharge yard can be exchanged into resource to 1200 DEG C of, can be recycled with direct economy.
Blast furnace iron notch slag iron mode, which has continuous tapping and interval, alternating or diagonally carries out tissue, taps a blast furnace, tap a blast furnace daily,
Operations number of slagging tap be ten several times, slag, iron yield it is thousands of, more than ten thousand tons, tapping duration and rhythm ordinary circumstance are to have rule
Rule, when blast furnace normally taps a blast furnace, the temperature of slag iron water stablizes huge high temperature heat source more than 1450 DEG C, containing abundant, its
Slag iron sensible heat (physical thermal) energy level is high, belongs to high product residual heat resources.35% (blast furnace slag accounts for 28%) of whole high temperature resources is accounted for, is returned
Receive value greatly, still dissipated in vain without the recovery technology of maturation, substantial amounts of Blast furnace slag sensible heat (physical thermal) at present.It is and Chinese
It is annual to produce more than 1,000,000,000 tons of Blast furnace slag, such as according to being cooled to room temperature calculating, only one ton of blast furnace slag can release (1.26~
1.88) × 106kJ heat carries the equivalent mark coal of sensible heat at 7,000,000 tons, and residual heat resources are quite abundant, how this part
Heat is recycled, and will be the research topic of great energy-conserving and environment-protective.To Chinese Iron ＆ Steel Enterprises energy-saving and emission-reduction, sustainable development
Open up significant.
Blast furnace slag iron runner is the passage that slag iron is discharged in time, with blast furnace maximization and strengthening smelting, goes out iron increase, slag
The use condition of iron runner is increasingly harsh, labor intensity, ton iron refractory consumption amount before its service life strong influence iron, very
Also increasingly show to many drawbacks such as the normal productions for influenceing blast furnace.
Based on this, from existing background technology, the application is intended to by being directed to modern blast furnace smelting process skill for many years
Art research, break through and change intrinsic traditional resistance to material Design on thermal insulation theory, original creation is broken through in the design of slag iron ditch inner lining structure using resistance to
Material arrangement heat transfer is combined with the heat-insulated cooling theory of forced circulation, both " Yang Leng be Protected from Heat gradient arrangement method ", is formed its temperature field and is divided
Cloth is more reasonable, and blast furnace discharge yard slag iron runner liner long term high temperature slag, molten iron are washed away under conditions of erosion, in 1150 DEG C of more difficult quilts
Shift resistance to material surface onto and form the slag iron containment vessel of " self is repaired ", realize blast furnace discharge yard slag iron ditch in long-lived, insulation and money
The unification that source recovery efficiently utilizes, the efficient of its energy-saving and emission-reduction control technology, innovation, green, recovery is recyclable with being applicable leather
The breakthrough of new property, it is final to realize the negative reality that smelted to which blast furnace process energy consumption is greatly lowered in the short period of proposition
Application effect.
Utility model content
The utility model is for technical problem present in prior art, there is provided Exposure degree more than blast furnace discharge yard slag iron water
Energy-saving power generation system, it can reach fully recovery and utilize the slag of blast furnace discharge yard, the beneficial effect of the high-temperature residual heat resource of molten iron.
In order to solve the above technical problems, the technical solution adopted in the utility model is：Sensible heat more than blast furnace discharge yard slag iron water
Energy-saving power generation system, including body of heater, cooling system, heat recovery boiler system and saturated vapor electricity generation system are reclaimed,
The body of heater is connected with tap drain, and the tap drain is connected with slag iron ditch；The slag iron ditch includes slag runner and iron branck-groove, institute
Tap drain is stated to be connected with the iron branck-groove by husky mouth.
Preferably, the top of the slag iron ditch is provided with mobile dust-proof petticoat pipe box hat, the bottom of the slag iron ditch is provided with slag
Iron runner box hat；The inner side of the slag iron ditch box hat is provided with the resistance to material permanent layer of slag iron ditch；The inner side of the resistance to material permanent layer of slag iron ditch
Provided with the slag iron ditch protective layer of resistance to material；The inner side of the slag iron ditch protective layer of resistance to material is provided with the slag iron ditch working lining of resistance to material；The slag iron
Slag iron ditch corrosion detecting device is provided between the ditch working lining of resistance to material and the resistance to material permanent layer of the slag iron ditch；The dust-proof petticoat pipe of movement
The junction of box hat and the slag iron ditch box hat is provided with cast house table cover sheet；The cast house table cover sheet is symmetrical
Provided with multiple ball joint compensators and flexible unit；The built-in cooling system of slag iron ditch.
Preferably, the cooling system includes Vaporizing cooling pipe, enters backwater distribution header, be upper header, lower collecting box, spherical
Compensator and flexible unit, steam water lines and its pressure controlling valve and slag iron ditch corrosion detecting device；The lower collecting box point
She You not water inlet and delivery port；The lower collecting box is by delivery port, through ball joint compensator and flexible unit, control valve and steaming
Steam pipe net accesses total drum of heat recovery boiler system.
Preferably, the slag iron ditch corrosion detecting device includes copper high heat conduction grid, thermocouple, protection sleeve pipe, benefit
Repay wire and galvanic couple vasculum.
Preferably, the Vaporizing cooling pipe is provided with upper header and lower collecting box, the Vaporizing cooling pipe is by upper header with
Header is divided into three parts；The Vaporizing cooling pipe includes mobile cooling tube and fixed cooling tube；The mobile cooling tube is located at shifting
Move the inner side of dust-proof petticoat pipe box hat；The fixed cooling tube is located in the slag iron ditch protective layer of resistance to material；The two of the mobile cooling tube
End is respectively equipped with mobile cooling tube admission port and mobile cooling tube water return outlet；The both ends of the fixed cooling tube are respectively equipped with fixation
Cooling tube admission port and fixed cooling tube water return outlet.
Join preferably, the fixed cooling tube admission port and fixed cooling tube water return outlet are respectively connected to distribute into backwater
Case；The mobile cooling tube admission port and mobile cooling tube water return outlet are respectively connected to distribute header into backwater.
Preferably, the heat recovery boiler system include total drum, hot water circuit pump group, demineralized water water supply pump group,
Oxygen-eliminating device, storage heater and steam pipework, main exhaust valve, air bleeding valve, sampling blowdown apparatus, demineralized water water supply installation and saturation are steamed
Vapour electricity generation system；The demineralized water water supply pump group includes low force circulating pump, High-pressure forced circulation pump and feedwater pump group.
Preferably, the fixed cooling tube water return outlet and the mobile cooling tube water return outlet access total vapour by pipeline
Bag；The fixed cooling tube admission port and the mobile cooling tube admission port are accessed total by the pipeline provided with hot water circuit pump group
Drum；Total drum is connected with air bleeding valve and sampling blowdown apparatus respectively；Total drum accesses saturation by main exhaust valve
Steam generating system；Total drum is connected by the pipeline provided with demineralized water water supply pump group with demineralized water water supply installation；It is described
Saturated vapor electricity generation system is connected by pipeline with demineralized water water supply installation.
Compared with prior art, beneficial effect possessed by the utility model is：
Arrange that heat transfer is heat-insulated with forced circulation using resistance to material using breakthrough theoretical designed in slag iron ditch inner lining structure is created
Cooling theory is combined, both " Yang Leng be Protected from Heat gradient arrangement method ", and it is more reasonable to form its thermo parameters method again, blast furnace discharge yard slag
Iron runner liner long term high temperature slag, molten iron are washed away under conditions of erosion, more difficult be pulled to resistance to material surface at 1150 DEG C and formed " self
The slag iron containment vessel of repairing ", realize blast furnace discharge yard slag iron ditch in long-lived, insulation, reduction high temperature refractory consumption and resource reclaim
The unification efficiently utilized, will be the efficient of energy Conservation of Blast Furnace emission reduction control technology, innovation, green, recovery is recyclable and is applicable theoretical
Upper innovative breakthrough, to which blast furnace process energy consumption is greatly lowered in the short period of proposition, final realize bears what can be smelted
Practical application effect.
Directly utilize mobile (activity) and fixed novel slag iron runner V-type plate formula ellipse heat pipe Vaporizing cooling tubular construction dress
Put, hyperthermia radiation pollution sources caused by blast furnace production process high temperature slag, molten iron are converted rapidly to electric energy used in producing, turn into production
The breakthrough innovation bright spot of raw direct economic benefit.Such as 1 × 6MW filling condensing saturated steam turbine+1x7MW generating sets
And supporting auxiliary equipment expansion working, direct economic benefit is produced per year 1.5 hundred million yuan (electricity charge).
Directly utilize mobile (activity) and fixed novel slag iron runner V-type plate formula ellipse heat pipe Vaporizing cooling tubular construction device
Detection on-Line Monitor Device innovation structure form in real time is corroded with simulation slag iron ditch, that is, has good heat-insulated, insulation, absorb heat energy
Effect, have again change of temperature field in overall monitor slag iron runner liner, grasp liner soil erosion evolution rule in time, corroding thickness becomes
To change, rational structure finally reduces a ton iron refractory consumption, improves the security of blast fumance, then as generation indirect economic effect
Breakthrough innovation bright spot.
Residual heat resources recovery in hyperthermia radiation source caused by one or more blast furnaces and multiple cast house slags, molten iron is in parallel
Collection is integrated and directly produces saturated vapor, and each residual heat resources reclaimer is parallel to can be between supply hot water and steam-water pipeline
Rapid switching function, the complicated working environment of slag iron ditch is suitable for, is convenient to overhaul, dismount and safeguard.
Brief description of the drawings
Fig. 1 is single, double blast furnace taphole, slag iron ditch arrangement schematic diagram；
Fig. 2 is that slag iron ditch is mobile, fixed cooling device；
Fig. 3 is that slag iron ditch grid galvanic couple arranges schematic diagram；
Fig. 4 is Vaporizing cooling pipe iris type structural representation；
Fig. 5 is portable, fixed cooling device flow chart；
Fig. 6 is the flow chart of heat recovery boiler system.
1- moves dust-proof petticoat pipe box hat, 2- movement cooling tubes, 3- ball joint compensators and flexible unit, 4- cast house stoves in figure
Platform cover sheet, 5- fix cooling tube, and the 6- slag iron ditches protective layer of resistance to material, the 7- slag iron ditches working lining of resistance to material, the resistance to material of 8- slag iron ditches is forever
Long layer, 9- slag iron ditch corrosion detecting devices, 91- grids, 92- thermocouples, 10- slag iron ditch box hats, 11- fix cooling tube feedwater
Mouthful, 12- movement cooling tubes admission port, 13- fixes cooling tube water return outlet, 14- movement cooling tube water return outlets, 15- upper headers, 16-
Lower collecting box, 17- Vaporizing cooling pipes, the total drums of 18-, 19- main exhaust valves, 20- air bleeding valves, 21- sampling blowdown apparatus, 22- hot water
Circulation pump group, 23- demineralized water water supply pump groups, 24- demineralized water water supply installations, 25- enter backwater distribution header, 26- saturated vapors hair
Electric system, 27- bodies of heater, 28- tap drains, 29- slag runners, 30- iron branck-grooves, 31- sand mouths.
Embodiment
It is below in conjunction with the accompanying drawings and specific real to make those skilled in the art be better understood from the technical solution of the utility model
Example is applied to elaborate to the utility model.
Embodiment of the present utility model discloses Exposure degree energy-saving power generation system more than blast furnace discharge yard slag iron water, as schemed institute
Showing, it includes body of heater 27, cooling system, heat recovery boiler system and saturated vapor electricity generation system,
Body of heater 27 is connected with tap drain 28, and tap drain 28 is connected with slag iron ditch；Slag iron ditch includes slag runner 29 and iron branck-groove 30, tap drain
28 are connected by husky mouth 31 with iron branck-groove 30.
In the present embodiment, the top of slag iron ditch is provided with mobile dust-proof petticoat pipe box hat 1, and the bottom of slag iron ditch is provided with slag iron ditch steel
Shell 10；The inner side of slag iron ditch box hat 10 is provided with the resistance to material permanent layer 8 of slag iron ditch；The inner side of the resistance to material permanent layer 8 of slag iron ditch is provided with slag iron
The ditch protective layer of resistance to material 6；The inner side of the slag iron ditch protective layer of resistance to material 6 is provided with the slag iron ditch working lining of resistance to material 7；The slag iron ditch working lining of resistance to material 7
Slag iron ditch corrosion detecting device 9 is provided between the resistance to material permanent layer 8 of slag iron ditch；Mobile dust-proof petticoat pipe box hat 1 and slag iron ditch box hat
10 junction is provided with cast house table cover sheet 4；Cast house table cover sheet 4 be arranged with multiple ball joint compensators with
Flexible unit 3；The built-in cooling system of slag iron ditch.
In the present embodiment, cooling system includes Vaporizing cooling pipe 17, enters backwater distribution header 25, upper header 15, lower collecting box
16th, ball joint compensator and flexible unit 3, steam water lines and its pressure controlling valve and slag iron ditch corrosion detecting device；The second line of a couplet
Case 16 is respectively equipped with water inlet 161 and delivery port 162；Lower collecting box 16 is by delivery port 162, through ball joint compensator and flexible unit
3rd, control valve and total drum 18 of steam pipe system access heat recovery boiler system.
In the present embodiment, slag iron ditch corrosion detecting device 9 include copper high heat conduction grid 91, thermocouple 92, protection sleeve pipe,
Compensating wire and galvanic couple vasculum.
In the present embodiment, Vaporizing cooling pipe 17 is provided with upper header 15 and lower collecting box 16, and Vaporizing cooling pipe 17 is by upper header 15
Divide with lower collecting box 16 for three parts；Vaporizing cooling pipe 17 includes mobile cooling tube 2 and fixed cooling tube 5；Mobile cooling tube 2 is located at
The inner side of mobile dust-proof petticoat pipe box hat 1；Fixed cooling tube 5 is located in the slag iron ditch protective layer of resistance to material 6；The both ends of mobile cooling tube 2
It is respectively equipped with mobile cooling tube admission port 12 and mobile cooling tube water return outlet 14；The both ends of fixed cooling tube 5 are respectively equipped with fixation
Cooling tube admission port 11 and fixed cooling tube water return outlet 13.
In the present embodiment, fixed cooling tube admission port 11 and fixed cooling tube water return outlet 13 are respectively connected to distribute into backwater and joined
Case 25；Mobile cooling tube admission port 12 and mobile cooling tube water return outlet 14 are respectively connected to distribute header 25 into backwater.
In the present embodiment, heat recovery boiler system includes total drum 18, hot water circuit pump group 22, demineralized water water supply pump group
23rd, oxygen-eliminating device, storage heater and steam pipework, main exhaust valve 19, air bleeding valve 20, sampling blowdown apparatus 21, demineralized water supply water and filled
Put 24 and saturated vapor electricity generation system 26；Demineralized water water supply pump group 23 include low force circulating pump, High-pressure forced circulation pump and
Feed water pump group.
In the present embodiment, fixed cooling tube water return outlet 13 and mobile cooling tube water return outlet 14 access total drum by pipeline
18；Total vapour is accessed in fixed cooling tube admission port 11 and mobile cooling tube admission port 12 by the pipeline provided with hot water circuit pump group 22
Bag 18；Total drum 18 is connected with air bleeding valve 20 and sampling blowdown apparatus 21 respectively；Total drum 18 is accessed full by main exhaust valve 19
With steam generating system 26；Total drum 18 is connected by the pipeline provided with demineralized water water supply pump group 23 with demineralized water water supply installation 24
Connect；Saturated vapor electricity generation system 26 is connected by pipeline with demineralized water water supply installation 24.
In the present embodiment, the copper high heat conduction grid monitoring slag iron ditch temperature change without dead band comprehensively, judge that iron runner corrodes
Situation, establish and calculate two dimensional model, 1150 DEG C of this position of slag iron ditch erosion line position is calculated using two-point method, realizes that slag iron ditch is invaded
The automatic early-warning of erosion, when galvanic couple damage can be convenient for changing galvanic couple.
In the present embodiment, saturation water enters serpentine locomotion in V-type plate formula ellipse heat pipe comb by the distribution of second line of a couplet tank inlet
Afterwards, collected and flowed out by upper header, into lower collecting box discharge through ball joint compensator and flexible unit, control valve, steam pipe system extremely
Drum.
In the present embodiment, main exhaust valve 19 is DN250 bores, to main steam pipe network steam supply, is generated electricity to low-pressure saturated steam
System 26；It is DN200 bores including being additionally provided with air bleeding valve 20；The demineralized water water supply installation 24 send water using double mothers, and water is through removing
Deoxygenation and pressurizeed in salt solution water supply installation 24 through water pump.
In the present embodiment, saturated vapor electricity generation system 26 (or 3 × saturated vapor screw rod generator) includes being passed through by total drum
Major steam line enters steam and filters clean device (high-efficiency steam-water separator) progress dehumidification scale removal (screw machine configures without this), warp
After steam-water separation, the low-pressure saturated steam from converter is sent into Steam Turbine's Main Vaper Valve, is sent out into 1 × low pressure filling condensing-type steamer
Group of motors and auxiliary facility expansion working；The condensate of steam turbine condenser is boosted by condensate pump, is then sent to demineralized water confession
The circulation of water installations 24 reuses.
In the present embodiment, blast furnace discharge yard slag iron ditch when production process discharges high temperature sludge, molten iron in time, be arranged on slag,
Forced circulation vaporizes concentrating type cooling device in the high temperature layer of resistance to material in molten iron groove, is pumped into through the water in drum by hot water circuit
Header is distributed, partly from distribution header entrance is arranged on slag, molten iron groove top is moved in (activity) heat-insulated dedusting cover structure
Forced circulation vaporization concentrating type cooling device (including flexible unit, upper and lower header, control valve, pressure gauge etc.), produce a large amount of
Low-pressure low-temperature saturated vapor water is delivered back into total drum through steam pipe system；
Another part is drawn through being fixed on slag from distributor box, forced circulation vaporizes cluster in the high temperature layer of resistance to material in molten iron groove
Formula cooling device produces a large amount of saturated vapor water, and drum is delivered back into through steam pipe system；
Saturation water absorbs heat in forced circulation vaporizes concentrating type cooling device at high operating temperatures turns into steam-water mixing
Thing (low-pressure low-temperature saturated vapor water), steam water interface is separated into steam and saturation water in drum, and saturation water is by hot water circuit
Pump forced conveyance repeats above-mentioned circulation.Can quickly it be started by diesel pump during power failure；To the vaporization concentrating type cooling of heated forced circulation
Device supplies water, and ensures blast furnace casting production safety.
The utility model is described in detail above by embodiment, but the content is only of the present utility model shows
Example property embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.The scope of protection of the utility model is by right
Claim limits.It is all to utilize technical scheme described in the utility model, or those skilled in the art is in the utility model technology
Under the inspiration of scheme, in essence of the present utility model and protection domain, design similar technical scheme and reach above-mentioned skill
Art effect, or the equivalent change made to application range and improvement etc., it all should still belong to patent of the present utility model and contain
Within lid protection domain.
Claims (3)
1. Exposure degree energy-saving power generation system more than blast furnace discharge yard slag iron water, including body of heater, cooling system, heat recovery boiler system
System and saturated vapor electricity generation system, it is characterised in that
The body of heater is connected with tap drain, and the tap drain is connected with slag iron ditch；The slag iron ditch includes slag runner and iron branck-groove, the master
Ditch is connected by husky mouth with the iron branck-groove；
The top of the slag iron ditch is provided with mobile dust-proof petticoat pipe box hat, and the bottom of the slag iron ditch is provided with slag iron ditch box hat；It is described
The inner side of slag iron ditch box hat is provided with the resistance to material permanent layer of slag iron ditch；The inner side of the resistance to material permanent layer of slag iron ditch is provided with the resistance to material of slag iron ditch
Protective layer；The inner side of the slag iron ditch protective layer of resistance to material is provided with the slag iron ditch working lining of resistance to material；The slag iron ditch working lining of resistance to material and
Slag iron ditch corrosion detecting device is provided between the resistance to material permanent layer of slag iron ditch；The dust-proof petticoat pipe box hat of movement and the slag iron
The junction of ditch box hat is provided with cast house table cover sheet；The cast house table cover sheet is arranged with multiple spherical benefits
Repay device and flexible unit；The built-in cooling system of slag iron ditch；
The cooling system includes Vaporizing cooling pipe, enters backwater distribution header, upper header, lower collecting box, ball joint compensator and flexibility
Component, steam water lines and its pressure controlling valve and slag iron ditch corrosion detecting device；The lower collecting box is respectively equipped with water inlet
And delivery port；The lower collecting box is by delivery port, more than ball joint compensator and flexible unit, control valve and steam pipe system access
Total drum of thimble-tube boiler system；
The Vaporizing cooling pipe is provided with upper header and lower collecting box, and the Vaporizing cooling pipe is divided into three by upper header and lower collecting box
Point；The Vaporizing cooling pipe includes mobile cooling tube and fixed cooling tube；The mobile cooling tube is located at mobile dust-proof petticoat pipe steel
The inner side of shell；The fixed cooling tube is located in the slag iron ditch protective layer of resistance to material；The both ends of the mobile cooling tube are respectively equipped with shifting
Dynamic cooling tube admission port and mobile cooling tube water return outlet；The both ends of the fixed cooling tube are respectively equipped with fixed cooling tube admission port
With fixed cooling tube water return outlet；
The heat recovery boiler system includes total drum, hot water circuit pump group, demineralized water water supply pump group, oxygen-eliminating device, storage heater
And steam pipework, main exhaust valve, air bleeding valve, sampling blowdown apparatus, demineralized water water supply installation and saturated vapor electricity generation system；Institute
Stating demineralized water water supply pump group includes low force circulating pump, High-pressure forced circulation pump and feedwater pump group；
The fixed cooling tube water return outlet and the mobile cooling tube water return outlet access total drum by pipeline；The fixed cooling
Total drum is accessed in pipe admission port and the mobile cooling tube admission port by the pipeline provided with hot water circuit pump group；Total drum
It is connected respectively with air bleeding valve and sampling blowdown apparatus；Total drum accesses saturated vapor electricity generation system by main exhaust valve；Institute
Total drum is stated to be connected with demineralized water water supply installation by the pipeline provided with demineralized water water supply pump group；The saturated vapor electricity generation system
It is connected by pipeline with demineralized water water supply installation.
2. Exposure degree energy-saving power generation system more than blast furnace discharge yard slag iron water according to claim 1, it is characterised in that institute
Stating slag iron ditch corrosion detecting device includes copper high heat conduction grid, thermocouple, protection sleeve pipe, compensating wire and galvanic couple vasculum.
3. Exposure degree energy-saving power generation system more than blast furnace discharge yard slag iron water according to claim 1, it is characterised in that institute
State fixed cooling tube admission port and fixed cooling tube water return outlet is respectively connected to distribute header into backwater；The mobile cooling tube feedwater
Mouth and mobile cooling tube water return outlet are respectively connected to distribute header into backwater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720455982.2U CN207210462U (en) | 2017-04-27 | 2017-04-27 | Energy-saving power generation system for sensible heat recovery of slag and molten iron residues in blast furnace casting house |
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| CN201720455982.2U CN207210462U (en) | 2017-04-27 | 2017-04-27 | Energy-saving power generation system for sensible heat recovery of slag and molten iron residues in blast furnace casting house |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796156A (en) * | 2018-06-14 | 2018-11-13 | 山东钢铁股份有限公司 | The closed slag runner of water cooling |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796156A (en) * | 2018-06-14 | 2018-11-13 | 山东钢铁股份有限公司 | The closed slag runner of water cooling |
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