CN206986223U - Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system - Google Patents
Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system Download PDFInfo
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- CN206986223U CN206986223U CN201720763261.8U CN201720763261U CN206986223U CN 206986223 U CN206986223 U CN 206986223U CN 201720763261 U CN201720763261 U CN 201720763261U CN 206986223 U CN206986223 U CN 206986223U
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- waste heat
- dust removal
- generation system
- electric generation
- stable electric
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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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Abstract
The utility model discloses a kind of pneumatic steelmaking dry dust removal and full waste heat stable electric generation system, it is characterised in that：The converter gas come out from converter connects gasification cooling flue, and the current stabilization bag that is linked in sequence, the compound type dust remover of cylinder, waste heat boiler；High-temperature steam caused by high-temperature steam caused by waste heat boiler and cooling stack drum accesses steamdrum, and is generated electricity jointly into electricity generation system；The waste gas of waste heat boiler burning enters after deduster and enters exhaust chimney by blower fan；Also include the ash silo for collecting dust, the top of ash silo is provided with the gas outlet with purification function.Effective dedusting can be carried out to converter gas, and comprehensively utilize the energy that most of sensible heat in converter gas and wherein CO are included, while solve smoke contamination and coal gas of converter diffuses caused atmosphere polluting problem, reach the purpose of comprehensive utilization of resources.
Description
Technical field
The utility model belongs to metallurgical environmental protection and comprehensive utilization of energy technical field, more particularly to a kind of pneumatic steelmaking dry type
Dedusting and full waste heat stable electric generation system.
Background technology
Method for treating converter flue gas is divided into combustion method and unburned method by thermal energy state.Have with dedusting method point：Unburned wet type
Wen's process of cleaning and unburned dry electric precipitation method, wherein unburned wet type Wen process of cleaning accounts for more than 80%.Separately there is fragmentary burning
Generating or the generating of vertical heating flue afterheat steam etc. are also all immature, only rest on experimental stage, to ask the generating of relatively long time,
It is also the method having no idea that taking, which reduces the mode for having steam parameter,.Unburned dry electric precipitation method is the beginning of the nineties in last century
The complete set of equipments of Baosteel equipment Imported From German EMH Company LURGI, more unburned wet type Wen process of cleaning have energy-conservation, water saving, without sewage, without sludge
Deng clear superiority.Certain popularization has been obtained at present, but because of some insoluble problems, has not been used generally yet so far.
Converter gas is different from the flue gas of other High-temp. kilns, and its dedusting and the recycling of waste heat energy are very difficult, main
Wanting reason is：
1st, flue gas stream is extremely unstable：Smelted per stove less than 30 minutes, oxygen blast around here constantly changes by force, and flue gas flow drastically becomes
Change by 0~100% wave amplitude, and more than 20 minutes between two stoves labour almost produces without flue gas.
2nd, the great explosivity of flue gas：CO content in smoke 60~80%.
3rd, flue-gas temperature is high and wave amplitude is very big：Flue gas during smelting temperature is between two stoves by normal temperature to 1600 DEG C of even more highs
Normal temperature.Currently without the deduster that can handle such high temperature.
4th, dust contained flue gas concentration very about 80~200g/Nm3, obstructing problem is brought to waste heat utilization equipment.
For these reasons, it is all net using the processing of unburned wet type Wen method when no matter starting oxygen-blown converter steel-making both at home and abroad
Change flue gas, although high energy consumption, water consumption are big, secondary pollution weight, be also continuing with for the reason for safe and reliable.With science and technology
There is unburned dry electric precipitation method in development, Germany, and high energy consumption, the water consumption for solving unburned wet type Wen method are big, large amount of sewage
The problems such as Treatment of Sludge, but because the explosive electric precipitation polar curves of CO often damage, explosion-proof control operation is difficult, the cooling tempering tower easily reason such as resistance
The rate of causing the accident remains high, so be difficult to promote.
About 800,000,000 tons/year of Chinese output of steel, wherein more than 500,000,000 tons of converter, often refine one ton of converter steel produce concentration containing CO 60% with
On high-temperature flue gas 80m3, flue-gas temperature can reach 1400-1600 DEG C.The KJ/ of flue gas total heat energy 310,000,000,000,000, can be converted into
High-quality annual 31600000000 degree of electric energy, 14,300,000,000 yuan are closed, is economized on coal 10,000,000 tons of year, year emission reduction CO2It is about 24,600,000 tons, gloomy equivalent to newly-increased
5.4 ten thousand hectares of woods area year.General economic value is per year over 19000000000 yuan.Every hundred million degree of electric energy can for dynamic 500,000,000 yuan production value,
I.e. every year can be for the dynamic 158,000,000,000 yuan output value.Social benefit is that (every hundred million degree of electric energy can create 0.56 for 1,770,000 people of annual increase employment
Ten thousand people obtain employment).But for the utilization of converter gas, the utilization of waste heat simply has been carried out to flue cooling steam, remaining
How effectively most sensible heat all diffuses in dust-removing process, causes the significant wastage of the energy, so comprehensive profit
It is also a urgent problem to be solved with the sensible heat of converter gas and the CO energy contained.
Utility model content
The purpose of this utility model is：For above-mentioned problem, there is provided a kind of pneumatic steelmaking dry dust removal and complete
Waste heat stable electric generation system, effective dedusting can be carried out to converter gas, and comprehensively utilize the major part in converter gas and show
Heat and the energy that is included of wherein CO, while solve smoke contamination and coal gas of converter diffuses caused atmosphere polluting problem, reach
The purpose of comprehensive utilization of resources is arrived.
What the purpose of this utility model was realized in：Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system, its
It is characterised by, the converter gas come out from converter connects gasification cooling flue, and the current stabilization bag that is linked in sequence, the combined type of cylinder are removed
Dirt device, waste heat boiler；High-temperature steam caused by high-temperature steam caused by waste heat boiler and cooling stack drum accesses steamdrum, and
Generated electricity jointly into electricity generation system；The waste gas of waste heat boiler burning enters after deduster and enters exhaust chimney by blower fan；
Also include the ash silo for collecting dust, the top of ash silo is provided with the gas outlet with purification function.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the compound type dust remover
Shell, air intake duct, exhaust passage and the hydrolock at top including cylinder unload seam broken.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, hydrolock, which unloads seam broken, to be included
Quick-fried mat is unloaded, positioned at the tank unloaded inside quick-fried mat and quick-fried cap is unloaded, fills water seal water in tank, unload quick-fried cap and tip upside down on
On tank.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, compound type dust remover also wrap
Some cyclone dust removal components are included, some cyclone dust removal components are fixed on compound type dust remover by the soft shrouding parallel connection of burst
Inner chamber；Porous sieve plate water cooling box is additionally provided with the inside of compound type dust remover.The soft shrouding of burst plays a part of regulation closing,
Porous sieve plate water cooling box plays a part of support sealing to cyclone dust removal component.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the cyclone dust removal component
For the tubular body with blade, include air inlet and air outlet, the size of wherein air outlet is Whirlwind
The direction of the air inlet of dedusting component can be fixed, and can also not have to strict fixed.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, in the combined type dedusting
Increase is connected with current stabilization bag between device and waste heat boiler.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the current stabilization bag pass through combustion
Pipe material is connected with fuel compensation device, and the fuel channel also includes the ratio that can mix fuel and air proportion automatically
Example regulating type mixer, fuel valve is being provided with before and after the proportional regulating type mixer on fuel channel.It is maximum with converter
The temperature of compound type dust remover automatically adjusts passing ratio adjustable type by automatic control system and mixed as benchmark during blowing oxygen quantity
The fuel inlet and air inlet and the ratio of fuel and air inlet of device, to reach the temperature of control whole system
The purpose fluctuated in a less scope, be advantageous to the stable smooth operation of equipment.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the current stabilization bag and compound
The bottom of formula deduster carries ash bucket, and the ash bucket is connected in parallel with nitrogen soot blower, the dusty gas of blowout
Parallel connection access ash silo.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the waste heat boiler and are removed
Dirt device bottom carries ash bucket, and the ash bucket is connected in parallel with air soot blower, the dusty gas of blowout and connection
Enter ash silo.
Pneumatic steelmaking dry dust removal described in the utility model and full waste heat stable electric generation system, the compound type dust remover
Can serial or parallel connection set 2 and more than, the shell of compound type dust remover is covered with thermal insulation layer；The current stabilization bag and combined type are removed
Dirt device is made by the material of resistance to 1200 DEG C of high temperature above, is provided with current stabilization bag some by thermal store.
Of the present utility model is mainly characterized in that：
The type of compound type dust remover generally dry dust removal, its shell are cylinder, are made using high-strength material, are had
There is explosion-proof, against pressure function.Cover top portion sets hydrolock to unload seam broken, can further pre- blast protection, enhance safety guarantee.
Cyclone dust removal component is located at the inside of compound type dust remover, can be directed to or non-directional installation makes, by special resistance to height
Warm, wear-resisting material is made, and can be resistant to the high temperature of 40~1200 DEG C of wide fluctuations for a long time；With excellent explosion-proof anti-electric
Property, and wearability etc..
Resistance to 40~1200 DEG C of porous sieve plate water cooling boxes are set in deduster, to bear the weight of cyclone dust removal component, and are played
The effect of sealing；The soft shrouding of burst can be provided with multiple, play a part of regulation closing to cyclone dust removal component, while provide extra
Supporting role, and 40~1200 DEG C can be resistant to for a long time.
In view of the operating mode feature of converter operation, go out between molten steel to have the interval of 20-30 minutes every time, can cause whole
The operating condition fluctuation of such as compound type dust remover equipment is larger in system, its internal temperature can in interior fluctuation in a big way,
The service life of influence equipment that can be more serious.Therefore heat supplement device is introduced in the utility model, namely fuel is mended
Fill and put, can stepless regulated flow in the range of the unit feeding.When being in the gap that goes out molten steel twice, fuel compensation device combines
Proportional regulating type mixer can carry out aftercombustion in flow straightener, the supplement of heat be carried out to whole system so that related
The fluctuation range of the running temperature of equipment is not too large, maintains the relatively stable of operating mode, extends the service life of equipment, together
When be also beneficial to the operational management of system.
The beneficial effects of the utility model are：Effective dedusting can be carried out to converter gas, and converter can be comprehensively utilized
The energy that most of sensible heat and wherein CO in flue gas are included, namely serve full heat recovery to converter gas
Effect；Solve smoke contamination simultaneously and coal gas of converter diffuses caused atmosphere polluting problem, reached comprehensive utilization of resources
Purpose.Specifically, including the following aspects：
Total economic benefit, environmental benefit, social benefit are far above unburned wet type Wen process of cleaning and unburned dry electric precipitation
Method；Run easy to operate, accident rate is low, and annual running rate is approximate with conventional thermal power station；Dust removing effects are good, dedusting rear converter cigarette
Gas dustiness≤20mg/Nm3；The anhydrous and secondary pollution of sludge.
Brief description of the drawings
Fig. 1 is the overall schematic of the utility model embodiment；
Fig. 2 is the Longitudinal cross section schematic of the utility model embodiment compound type dust remover；
Fig. 3 is the cross-sectional view of the utility model embodiment compound type dust remover；
Fig. 4 is the Longitudinal cross section schematic that the utility model embodiment hydrolock unloads seam broken；
Fig. 5 is the Longitudinal cross section schematic of the utility model embodiment cyclone dust removal component.
Reference is：1 is converter, and 2 be current stabilization bag, and 3 be compound type dust remover, and mouth is entered and (gone out) to 31 nitrogen soot blowings, outside 32
Shell, 33 be the soft shrouding of burst, and 34 be air intake duct, and 35 be cyclone dust removal component, and 36 be porous sieve plate water cooling box, and 37 unload for hydrolock
Seam broken, 38 be exhaust passage, and 4 be waste heat boiler, and 5 be deduster, and 6 be blower fan, and 7 be ash silo, and 8 be electricity generation system, and 9 be steamdrum,
10 be fuel compensation device, and 11 be nitrogen soot blower, and 12 be air soot blower, and 13 be proportional regulating type mixer, and 371 are
Tank, 372 be water seal water, and 373 is unload quick-fried cap, and 374 be to unload quick-fried mat.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model technology is further elaborated.It should be appreciated that specific embodiment described herein only to
The utility model is explained, is not used to limit the utility model.
As illustrated, pneumatic steelmaking dry dust removal and full waste heat stable electric generation system, the converter gas come out from converter connects
Gasification cooling flue, and the 2 → waste heat boiler of current stabilization bag 2 → compound type dust remover, 3 → current stabilization bag 4 that is linked in sequence；Waste heat boiler 4 produces
High-temperature steam caused by raw high-temperature steam and the drum of cooling stack accesses steamdrum 9, and enters jointly from steamdrum 9 and generate electricity
System 8 is generated electricity；The waste gas that waste heat boiler 4 burns enters after deduster 5 and enters exhaust chimney by blower fan 6；Also include receiving
Collect the ash silo 7 of dust.
The compound type dust remover 3 includes shell 32, air intake duct 34, exhaust passage 38 and the hydrolock at top of cylinder
Unload seam broken 37.Hydrolock, which unloads seam broken 37, to be included unloading quick-fried mat 374, positioned at the He of tank 371 unloaded inside quick-fried mat 374
Quick-fried cap 373 is unloaded, water seal water 372 is filled in tank 371, quick-fried cap 373 is unloaded and tips upside down on tank 371.
Compound type dust remover 3 also includes 10 cyclone dust removal components 35, and all cyclone dust removal components 35 are soft by burst
33 evenly spaced parallel connection of shrouding is fixed on the inner chamber of compound type dust remover 3, is additionally provided with the inside of compound type dust remover 3 more
Hole sizer plate water cooling box 36；The air inlet of each cyclone dust removal component 35 both facing to the inwall of nearest compound type dust remover 3 at.
Current stabilization bag 2 is connected by fuel channel with fuel compensation device 10, and the fuel channel also includes can be by fuel
The proportional regulating type mixer 13 mixed automatically with air proportion, the cartridge before and after the proportional regulating type mixer 13
Fuel valve is provided with road.
The bottom of current stabilization bag 2 and compound type dust remover 3 carries ash bucket, and nitrogen is provided with the ash bucket of current stabilization bag 2
Air-blowing ash inlet and outlet, nitrogen soot blowing inlet and outlet, the ash bucket are provided with the ash bucket of compound type dust remover 3
It is connected in parallel with nitrogen soot blower 11, the dusty gas access ash silo 7 in parallel of blowout.The waste heat boiler 4 and deduster 5
Bottom carries ash bucket, and the ash bucket is connected in parallel with air soot blower 12, the dusty gas access in parallel of blowout
Ash silo 7.
By pneumatic steelmaking dry dust removal of the present utility model and full waste heat stable electric generation system (abbreviation C methods) and it is traditional not
Combustion wet type Wen process of cleaning (abbreviation A methods) and unburned dry electric precipitation method (abbreviation B methods) pass through pair of each technology and economic effect
Than specific as follows：
Converter gas processing A, B, C, three kinds of method Contrast on effect tables
Whole process uses Automated condtrol mode, to production, dedusting and cogeneration of heat and power relevant apparatus, including stokehold and tens of
Individual node is carried out from motion tracking, and carries out auto-adjustment control.
This flue gas ash removal and utilization system can be applied to processing and the waste heat of all industrial furnace high-temperature flue gas
Comprehensive utilization, has relatively broad practicality.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of pneumatic steelmaking dry dust removal and full waste heat stable electric generation system, it is characterised in that：The converter cigarette come out from converter
Gas connects gasification cooling flue, and the current stabilization bag for the cylinder that is linked in sequence（2）, cylinder compound type dust remover（3）, waste heat boiler
（4）；Waste heat boiler（4）High-temperature steam caused by caused high-temperature steam and cooling stack drum accesses steamdrum（9）, and jointly
Into electricity generation system（8）Generated electricity；Waste heat boiler（4）The waste gas of burning enters deduster（5）After pass through blower fan（6）Into row
Gas chimney；Also include the ash silo for collecting dust（7）.
2. pneumatic steelmaking dry dust removal according to claim 1 and full waste heat stable electric generation system, it is characterised in that：It is described
Compound type dust remover（3）Include the shell of cylinder（32）, air intake duct（34）, exhaust passage（38）And the hydrolock at top unload it is quick-fried
Mouthful（37）.
3. pneumatic steelmaking dry dust removal according to claim 2 and full waste heat stable electric generation system, it is characterised in that：Water seal
Formula unloads seam broken（37）Including unloading quick-fried mat（374）, positioned at unloading quick-fried mat（374）Internal tank（371）It is quick-fried with unloading
Cap（373）, tank（371）Inside fill water seal water（372）, unload quick-fried cap（373）Tip upside down on tank（371）On.
4. pneumatic steelmaking dry dust removal according to claim 2 and full waste heat stable electric generation system, it is characterised in that：It is compound
Formula deduster（3）Also include some cyclone dust removal components（35）, some cyclone dust removal components（35）Pass through the soft shrouding of burst
（33）Parallel connection is evenly spaced to be fixed on compound type dust remover（3）Inner chamber；In compound type dust remover（3）Inside be additionally provided with
Porous sieve plate water cooling box（36）.
5. pneumatic steelmaking dry dust removal according to claim 4 and full waste heat stable electric generation system, it is characterised in that：It is described
Cyclone dust removal component（35）For the tubular body with blade, include air inlet and air outlet, the wherein size of air outlet is φ 20-
φ800mm。
6. pneumatic steelmaking dry dust removal according to claim 1 and full waste heat stable electric generation system, it is characterised in that：Institute
State compound type dust remover（3）And waste heat boiler（4）Between increase be connected with current stabilization bag（2）.
7. pneumatic steelmaking dry dust removal according to claim 6 and full waste heat stable electric generation system, it is characterised in that：It is described
Current stabilization bag（2）By fuel channel and fuel compensation device（10）Connection, the fuel channel also includes can be by fuel and sky
The proportional regulating type mixer that gas mixes automatically in proportion（13）, in the proportional regulating type mixer（13）Front and rear cartridge
Fuel valve is provided with road.
8. according to the pneumatic steelmaking dry dust removal described in claim 6 and full waste heat stable electric generation system, it is characterised in that：It is described steady
Stream bag（2）And compound type dust remover（3）Bottom carry ash bucket, the ash bucket with nitrogen soot blower（11）It is in parallel
Connection, the dusty gas access ash silo in parallel of blowout（7）.
9. pneumatic steelmaking dry dust removal according to claim 6 and full waste heat stable electric generation system, it is characterised in that：It is described
Waste heat boiler（4）And deduster（5）Bottom carries ash bucket, the ash bucket with air soot blower（12）Parallel connection is even
Connect, the dusty gas access ash silo in parallel of blowout（7）.
10. pneumatic steelmaking dry dust removal according to claim 1 and full waste heat stable electric generation system, it is characterised in that：Institute
State compound type dust remover（3）Can serial or parallel connection set 2 and more than, compound type dust remover（3）Shell（32）Covered with every
Thermosphere；The current stabilization bag（2）And compound type dust remover（3）It is made by the material of resistance to 1200 DEG C of high temperature above, current stabilization bag（2）It is interior
Provided with some by thermal store.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763261.8U CN206986223U (en) | 2017-06-28 | 2017-06-28 | Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763261.8U CN206986223U (en) | 2017-06-28 | 2017-06-28 | Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206986223U true CN206986223U (en) | 2018-02-09 |
Family
ID=61400112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720763261.8U Expired - Fee Related CN206986223U (en) | 2017-06-28 | 2017-06-28 | Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206986223U (en) |
-
2017
- 2017-06-28 CN CN201720763261.8U patent/CN206986223U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20210628 |