CN202359136U - Double-driven blast furnace blower unit - Google Patents
Double-driven blast furnace blower unit Download PDFInfo
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- CN202359136U CN202359136U CN2011204185719U CN201120418571U CN202359136U CN 202359136 U CN202359136 U CN 202359136U CN 2011204185719 U CN2011204185719 U CN 2011204185719U CN 201120418571 U CN201120418571 U CN 201120418571U CN 202359136 U CN202359136 U CN 202359136U
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- blast furnace
- unit
- turbine
- coal gas
- blowing engine
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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 double-driven blast furnace blower unit. The unit comprises a steam turbine, a blast furnace blower, a variable speed clutch and a coal gas turbine which are sequentially and coaxially connected. By the scheme of coaxial arrangement, the unit has a compact structure, is small in floor area and low in mechanical loss, equipment cost and investment (the investment is 30 percent lower than that of a mode of matching two single machines), and is convenient to arrange, and the payback period is shortened by 1 to 2 years. Moreover, the function and safety margin are not reduced, and the unit can be used for high-power blast furnace blower units and is an ideal unit used by metallurgical blast furnace systems.
Description
Technical field
The utility model relates to the blast furnace blowing engine actuating unit, the two driving blast furnace blowing engine units of particularly a kind of coal gas turbine and turbine.
Background technology
Blast furnace blowing engine is the power air feed key equipment in the metallurgy industry blast furnace ironmaking production technique system.The large blast furnace blower unit is meant and is 4000m
3The power ventilation apparatus that above large blast furnace is equipped with comprises large blower, robot control system(RCS), electrical control system and driving machine etc.The large blower air quantity can reach 7000～10000Nm3/min, and driving power can reach 30000kW～60000kW.
In the ironmaking flow process; The sintering circuit energy consumption accounts for more than 10% of energy consumption per ton steel; The exhaust heat that cooler is discharged; Its heat energy is approximately 35% of agglomerate firing system heat consumption, and make full use of this part heat and can significantly reduce the sintering circuit energy consumption and account for 12% of metallurgical total energy consumption, be the second largest power consumption operation that is only second to ironmaking.General sintering plant sinter fume medial temperature≤150 ℃, the tail flue-gas temperature reaches 300～400 ℃.Present sinter cooler waste heat recovery; Be to reclaim the low grade residual heat energy through fly-ash separator post-heating waste heat boiler through reclaiming the fall flue gas of airtight section of ore deposit bellows and sinter cooler of sintering machine tail; In conjunction with low-temperature cogeneration technology, promote the complete set technology of the turbine driven set acting generating of low parameter with the superheated vapo(u)r of waste heat boiler.Idiographic flow is: feedwater gets into waste heat boiler through service pump, and after waste heating, a part becomes superheated vapour, gets into turbine work done generating.Another part produces overheated or the corresponding low pressure admission mouth of saturation steam entering turbine work done generating after the heating of waste heat boiler low-temperature zone.Water of condensation is supplied with low-pressure drum by the medium pressure boiler service pump behind low-pressure coal saver, low-pressure drum has from the deoxygenation function, realizes a complete thermodynamic cycle.
Blast furnace blowing engine mainly adopts phonomoter or turbine as driving machine at present, and utilizing direct motor drive is that current consumption is excessive, and when adopting turbine drive, if the blast furnace blast unit is less, then once investment is bigger, and plant design is arranged complicated.
Blast furnace gas is the sub product that ironmaking is produced, and when using the heat material to go into stove, the discharged producer gas temperature is at 400～450 ℃, and when using cold burden, the discharged producer gas temperature is 200～250 ℃.Blast-furnace top gas recovery turbine generator (Top Gas Pressure Recovery Turbine; Be called for short TRT) be utilize the coal gas that the blast furnace furnace roof discharges pressure can and heat energy be converted into mechanical energy and drive the equipment of generator for electricity generation, mainly comprise turbo-expander and generator two parts.The blast furnace gas energy that loses in the original blast furnace reducing valve group is rotated through promoting turbine, drive generator for electricity generation and reclaim.About 30% of the recyclable blast furnace blowing engine of TRT device institute energy requirement, cost of electricity-generating is very low, and economic benefit is very significantly.
In the ferrous metallurgy flow process, the conversion of the various energy and use constitute the flow of energy process of iron and steel enterprise until the exhaust gas emission process.Iron ore sintering flow process and blast furnace ironmaking flow process are as two significant process of energy expenditure in the iron and steel enterprise, and the recovery of its waste heat overbottom pressure is significant.
Summary of the invention
The utility model is from the synthesis energy saving angle, and adopting two recovered energies is that blast furnace blowing engine provides power, promptly provides a kind of coal gas turbine and turbine two driving blast furnace blowing engine units, with the efficient of the recovery of waste heat overbottom pressure in effective raising ferrous metallurgy flow process.
For realizing above-mentioned technical assignment, the utility model is taked following technical solution:
A kind of pair of driving blast furnace blowing engine unit comprises turbine, blast furnace blowing engine, speed change clutch and the coal gas turbine of coaxial connection successively.
The other technologies of the utility model are characterized as:
Said blast furnace blowing engine is an axial compressor.
Said coal gas turbine is an axial flow dry type coal gas turbine.
The coal gas turbine does work through the overbottom pressure waste heat that reclaims blast furnace gas, unites with turbine to drive the blast furnace blast unit.Speed change clutch is as the nucleus equipment in the whole device, when the coal gas turbine breaks down, can automatic opening coal gas turbine and the connecting of blast furnace blast unit, and guarantee the safe and reliable operation of blast furnace blast unit.
The utility model has been owing to adopted the scheme of coaxial arrangement, its compact construction, and floor space is little, arrangement convenience, equipment cost is low, invest for a short time, reduces than supporting two single cpu modes and to invest 30%, shortens 1～2 year payback period.And function do not subtract, and safety margin does not subtract, and can be used for high-power blast furnace blast unit, is the desirable unit that the metallurgy high furnace system uses.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Below in conjunction with embodiment and accompanying drawing the utility model is done further to specify.
Embodiment
According to the requirement of national energy-saving and emission-reduction, the overbottom pressure waste heat of blast furnace gas must reclaim generating through coal gas turbine unit, and the two is independently system.The electric energy that coal gas turbine unit is reclaimed must get into local electrical network, and the required current consuming apparatus of metallurgy industry absorbs electric energy from electrical network more simultaneously, has caused the multiple conversions of electric energy thus, influences the service efficiency of coal gas turbine unit.For avoiding the unnecessary loss of this kind; The utility model proposes a turbine and coal gas turbine associating driven in common blast furnace blowing engine; This unit comprises turbine 1, blast furnace blowing engine 2, speed change clutch 3 and coal gas turbine 4; Said turbine 1 and the coal gas turbine 4 coaxial two ends that are installed in blast furnace blowing engine 2, coal gas turbine 4 is connected with blast furnace blowing engine 2 through speed change clutch 3, and turbine 1 directly is connected with blast furnace blowing engine 2.
Blast furnace blowing engine 2 adopts axial compressor, and coal gas turbine 4 adopts axial flow dry type coal gas turbine.
In the middle of the utility model was arranged in blast furnace blowing engine 2, an end directly was connected with turbine 1, and the other end is connected with axial flow dry type coal gas turbine 4 through speed change clutch 3, constituted the coaxial arrangement mode; This decoration form mechanical loss is little, and system is simple and direct, in supporting and the control sets; The part subsidiary engine is merged into a cover, can save a generator, and makes equipment cost reduce; Investment reduces, and reduces about 30% investment than supporting two single cpu modes, shortens 1～2 year payback period.And function do not subtract, and safety margin does not subtract, and can be used for high-power blast furnace blast unit, is the desirable unit that the metallurgy high furnace system uses.
Claims (3)
1. a two driving blast furnace blowing engine unit is characterized in that this unit comprises turbine (1), blast furnace blowing engine (2), speed change clutch (3) and the coal gas turbine (4) of coaxial connection successively.
2. as claimed in claim 1 pair of driving blast furnace blowing engine unit is characterized in that described blast furnace blowing engine (2) is an axial compressor.
3. as claimed in claim 1 pair of driving blast furnace blowing engine unit is characterized in that, described coal gas turbine (4) is an axial flow dry type coal gas turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204185719U CN202359136U (en) | 2011-10-28 | 2011-10-28 | Double-driven blast furnace blower unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204185719U CN202359136U (en) | 2011-10-28 | 2011-10-28 | Double-driven blast furnace blower unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202359136U true CN202359136U (en) | 2012-08-01 |
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ID=46570339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204185719U Ceased CN202359136U (en) | 2011-10-28 | 2011-10-28 | Double-driven blast furnace blower unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202359136U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121048A (en) * | 2013-04-23 | 2014-10-29 | 中冶南方工程技术有限公司 | System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower |
| CN104152617A (en) * | 2014-09-03 | 2014-11-19 | 四川德胜集团钒钛有限公司 | Blast furnace air supply device and blast furnace |
-
2011
- 2011-10-28 CN CN2011204185719U patent/CN202359136U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121048A (en) * | 2013-04-23 | 2014-10-29 | 中冶南方工程技术有限公司 | System and method for applying blast furnace hot blast stove burnt gas to blast furnace steam blower |
| CN104152617A (en) * | 2014-09-03 | 2014-11-19 | 四川德胜集团钒钛有限公司 | Blast furnace air supply device and blast furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20190527 Decision number of declaring invalidation: 40308 Granted publication date: 20120801 |