CN202304458U - Blast furnace iron making and sintering energy recovery combined generator unit - Google Patents
Blast furnace iron making and sintering energy recovery combined generator unit Download PDFInfo
- Publication number
- CN202304458U CN202304458U CN2011204187080U CN201120418708U CN202304458U CN 202304458 U CN202304458 U CN 202304458U CN 2011204187080 U CN2011204187080 U CN 2011204187080U CN 201120418708 U CN201120418708 U CN 201120418708U CN 202304458 U CN202304458 U CN 202304458U
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- blast furnace
- sintering
- side shaft
- generator
- waste heat
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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 blast furnace iron making and sintering energy recovery combined generator unit which comprises a sintering waste heat recovery steam turbine, a blast furnace gas turbo-expender and a generator, wherein the blast furnace turbo-expender comprises two shafts which are respectively an air inlet side shaft and an exhaust side shaft; the air inlet side shaft is connected with the sintering waste heat recovery steam turbine through a rigid coupling; and the end of the exhaust side shaft is connected with the generator through a rigid coupling or a membrane coupling. The unit has the advantages that the investment in materials such as devices and plants is reduced greatly and the energy recovery efficiency of a metallurgical system is simultaneously improved, and therefore the unit is a novel energy-saving emission-reduction technology in the metallurgical system.
Description
Technical field
The utility model type relates to energy synthesis recycling equipment in the Ferrous Metallurgy flow process, is specifically related to a kind of blast furnace and sintering energy and reclaims the cogeneration unit.
Background technology
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 sintering deposit 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 mean temperature≤150 ℃, the tail flue-gas temperature reaches 300 ℃～400 ℃.Present sinter cooler waste heat recovery; Be behind deduster, to heat waste heat boiler and reclaim the low grade residual heat energy 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 Turbo-generator Set acting generating of low parameter with the superheated vapor of waste heat boiler.This technology is to be mechanical energy with thermal power transfer, and secondary converts the energy recovery technology of electric energy into then.Need sole investment factory building, generating equipment, design the control system separately, and be equipped with a cover high pressure and be incorporated into the power networks and equipment for surfing the net, cost of investment is bigger.
Blast furnace gas is the byproduct 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 large divisions.The blast furnace gas energy that loses in the original blast furnace pressure-reducing valve group is rotated through promoting turbine, drive generator for electricity generation and reclaim.About 30% of the recyclable blast furnace blower of TRT device institute energy requirement, cost of electricity-generating is very low, and economic benefit is very significantly.This technology is very universal in blast furnace ironmaking at present.Development trend is towards directions such as maximization, dry method dusts.This technology is to convert heat energy and pressure into mechanical energy, and secondary converts the energy recovery technology of electric energy into then.Need sole investment factory building, generating equipment, design the control system separately, and be equipped with a cover high pressure and be incorporated into the power networks and equipment for surfing the net, cost of investment is bigger.
Summary of the invention
To the defective or the deficiency of prior art, the purpose of the utility model is to provide a kind of blast furnace and sintering energy to reclaim the cogeneration unit.With when goods and materials such as minimizing equipment, factory building drop into, further improve the energy recovery rate in the iron-smelting process.
For realizing above-mentioned technical assignment, the utility model is taked following technical solution:
A kind of blast furnace and sintering energy reclaim the cogeneration unit; It is characterized in that; Comprise that sintering waste heat reclaims steam turbine, blast furnace gas turbo-expander and generator, said blast furnace gas turbo-expander is two shafts, and this pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine through positive coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator through positive coupling or diaphragm coupling.
The rotating ratio that said sintering waste heat reclaims steam turbine and blast furnace gas turbo-expander is: 1: 1.
The utility model is to the different characteristics of sintering system and blast furnace gas system; Adopt the pattern of the coaxial associating unit of three machines; The recovery of sintering waste heat energy is integrated with blast furnace roof pressure energy-recuperation system, unite the driving generator for electricity generation with sintering waste heat recovery steam turbine and blast furnace gas turbo-expander.Its energy recovery efficiency can improve about 10% on the basis of reclaiming separately.Simultaneously, after two cover systems are integrated, the function optimization of two cover units, auxiliary system merges, the control system integration, simplified apparatus, compact conformation, arrangement convenience, efficient is higher.Reduce investment and operating cost greatly, reduce coke ratio, improve energy recovery efficiency.
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 explain.
The specific embodiment
The utility model is considered from the energy consumption characteristics of iron-smelting process whole system; The sintering waste heat energy is reclaimed generation technology and the integrated configuration of blast furnace gas energy recovery generation technology; With sintering waste heat steam turbine 1, blast furnace gas turbo-expander 2 and generator 3 coaxial arranged in series; Wherein, blast furnace gas turbo-expander 2 is two shafts, and this pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine 1 through positive coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator 3 through positive coupling or diaphragm coupling.Be to guarantee the normal operation of unit, the rotating ratio that said sintering waste heat reclaims steam turbine 1 and blast furnace gas turbo-expander 2 is: 1: 1, and the rotor problem aspect the vibration that can not twist when under this speed ratio, moving.
Embodiment:
Among this embodiment, sintering waste heat reclaims steam turbine 1 and adopts condensing turbine, and blast furnace gas turbo-expander 2 adopts axial flow dry type coal gas turbine, and generator 3 adopts brushless excitation generator.Wherein, Axial flow dry type coal gas turbine 2 is two shafts; This pair shaft is respectively air inlet side shaft and exhaust side shaft, and wherein: air inlet side shaft end is connected with condensing turbine 1 through positive coupling, and the exhaust side axle head is connected with brushless excitation generator 3 through positive coupling or diaphragm coupling.For guaranteeing the normal operation of unit, brushless excitation generator 3 rotating speeds of being selected for use are 3000r/min, and the rotating speed of axial flow dry type coal gas turbine 2 is 3000r/min; Select steam turbine for use and confirm between steam turbine and the axial flow dry type coal gas turbine be connected rotating ratio the time; Rotating ratio like condensing turbine 1 and axial flow dry type coal gas turbine 2 is: 1: 1, can directly save speed change gear, and reduce the complexity of unit; Improve security, practice thrift investment; Effectively improve energy recovery efficiency simultaneously, so condensing turbine 1 rotating speed is 3000r/min.
Claims (2)
1. blast furnace and sintering energy reclaim the cogeneration unit; It is characterized in that; Comprise that sintering waste heat reclaims steam turbine (1), blast furnace gas turbo-expander (2) and generator (3), said blast furnace gas turbo-expander (2) is two shafts, and this pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine (1) through positive coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator (3) through positive coupling or diaphragm coupling.
2. blast furnace as claimed in claim 1 and sintering energy reclaim the cogeneration unit, it is characterized in that, the rotating ratio that said sintering waste heat reclaims steam turbine (1) and blast furnace gas turbo-expander (2) is: 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204187080U CN202304458U (en) | 2011-10-28 | 2011-10-28 | Blast furnace iron making and sintering energy recovery combined generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204187080U CN202304458U (en) | 2011-10-28 | 2011-10-28 | Blast furnace iron making and sintering energy recovery combined generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304458U true CN202304458U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204187080U Expired - Lifetime CN202304458U (en) | 2011-10-28 | 2011-10-28 | Blast furnace iron making and sintering energy recovery combined generator unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202304458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352784A (en) * | 2011-10-28 | 2012-02-15 | 西安陕鼓动力股份有限公司 | Power generating set combining iron-making blast furnace and sintered energy recycling |
| CN106382135A (en) * | 2016-08-31 | 2017-02-08 | 西安陕鼓动力股份有限公司 | Safety interlocking shutdown system and methods of sintering waste heat recovery and sintering fan combined unit |
-
2011
- 2011-10-28 CN CN2011204187080U patent/CN202304458U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352784A (en) * | 2011-10-28 | 2012-02-15 | 西安陕鼓动力股份有限公司 | Power generating set combining iron-making blast furnace and sintered energy recycling |
| CN106382135A (en) * | 2016-08-31 | 2017-02-08 | 西安陕鼓动力股份有限公司 | Safety interlocking shutdown system and methods of sintering waste heat recovery and sintering fan combined unit |
| CN106382135B (en) * | 2016-08-31 | 2018-07-27 | 西安陕鼓动力股份有限公司 | Sintering waste heat recycles and Sinter air machine Unit erriger safety interlocking shutdown system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |