CN102352784A - Power generating set combining iron-making blast furnace and sintered energy recycling - Google Patents
Power generating set combining iron-making blast furnace and sintered energy recycling Download PDFInfo
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- CN102352784A CN102352784A CN2011103337526A CN201110333752A CN102352784A CN 102352784 A CN102352784 A CN 102352784A CN 2011103337526 A CN2011103337526 A CN 2011103337526A CN 201110333752 A CN201110333752 A CN 201110333752A CN 102352784 A CN102352784 A CN 102352784A
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- blast furnace
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- steam turbine
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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 invention discloses a power generating set combining an iron-making blast furnace and sintered energy recycling. The power generating set comprises a sintered waste heat recycling steam turbine, a blast-furnace gas turbine expansion machine and a power generator, wherein the blast-furnace gas turbine expansion machine is provided with double output shafts which are respectively an air inlet side shaft and an air exhaust side shaft, wherein the air inlet side shaft is connected with the sintered waste heat recycling steam turbine through a rigid coupling; and the air exhaust side shaft end is connected with the power generator through the rigid coupling or a diaphragm coupling. Through the power generating set, the energy recycling efficiency of a metallurgy system is improved as well as the material resource input of devices and plants is reduced greatly, and the power generating set is a novel energy-saving and emission-reduction technology of the metallurgy system.
Description
Technical field
Type of the present invention relates to energy synthesis recycling equipment in the Ferrous Metallurgy flow process, is specifically related to a kind of blast furnace and sintering energy recovery cogeneration unit.
Background technique
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 Coolers is discharged; Its heat energy is approximately 35% of sintering deposit firing system heat consumption; Making full use of this part heat and can significantly reduce the sintering circuit energy consumption and account for 12% of metallurgical total energy consumption, is 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 heat recovery; Be behind deduster, to heat exhaust 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 exhaust 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, power generating equipment, design 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 by-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 large divisions.The blast furnace gas energy that loses in the original blast furnace reduction valve group is rotated through promoting turbine engine, 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, power generating equipment, design 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 object of the present invention is to provide a kind of blast furnace and sintering energy recovery 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 present invention takes following technical solution:
A kind of blast furnace and sintering energy recovery 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; This pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine through rigid coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator through rigid 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 present invention is directed to the different characteristics of sintering system and blast furnace gas system; Adopt the pattern of the coaxial associating unit of three machines; Sintering waste heat energy recovery and blast furnace roof pressure energy-recuperation system are integrated, 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 optimizations of two cover units, auxiliary system merges, and control system is integrated, simplified apparatus, compact structure, arrangement convenience, efficient is higher.Reduce investment and operating cost greatly, reduce coke ratio, improve energy recovery efficiency.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Below in conjunction with embodiment and accompanying drawing the present invention is done further explain.
Embodiment
The present invention considers from the energy consumption characteristics of iron-smelting process whole system; With sintering waste heat energy recovery 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 tandem arrangement; Wherein, Blast furnace gas turbo-expander 2 is two shafts; This pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine 1 through rigid coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator 3 through rigid 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 steam turbine, and blast furnace gas turbo-expander 2 adopts axial flow dry type coal gas turbine engine, and generator 3 adopts brushless excitation generator.Wherein, Axial flow dry type coal gas turbine engine 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 steam turbine 1 through rigid coupling, and the exhaust side axle head is connected with brushless excitation generator 3 through rigid coupling or diaphragm coupling.For guaranteeing the normal operation of unit, selected brushless excitation generator 3 rotating speeds are 3000r/min, and the rotating speed of axial flow dry type coal gas turbine engine 2 is 3000r/min; Select steam turbine for use and confirm between steam turbine and the axial flow dry type coal gas turbine engine be connected rotating ratio the time; Rotating ratio like condensing steam turbine 1 and axial flow dry type coal gas turbine engine 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 steam turbine 1 rotating speed is 3000r/min.
Claims (2)
1. blast furnace and sintering energy recovery 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; This pair shaft is respectively air inlet side shaft and exhaust side shaft; Wherein: air inlet side shaft end reclaims steam turbine (1) through rigid coupling and sintering waste heat and is connected, and the exhaust side axle head is connected with generator (3) through rigid coupling or diaphragm coupling.
2. blast furnace as claimed in claim 1 and sintering energy recovery cogeneration unit 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 |
|---|---|---|---|
| CN2011103337526A CN102352784A (en) | 2011-10-28 | 2011-10-28 | Power generating set combining iron-making blast furnace and sintered energy recycling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103337526A CN102352784A (en) | 2011-10-28 | 2011-10-28 | Power generating set combining iron-making blast furnace and sintered energy recycling |
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| CN102352784A true CN102352784A (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011103337526A Pending CN102352784A (en) | 2011-10-28 | 2011-10-28 | Power generating set combining iron-making blast furnace and sintered energy recycling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986846A (en) * | 2015-02-27 | 2016-10-05 | 福建三钢闽光股份有限公司 | Butt joint type no-load cooling device of afterheat and complementary energy recovery combined generator set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0175855A2 (en) * | 1984-09-26 | 1986-04-02 | MANNESMANN Aktiengesellschaft | Blast furnace plant |
| JP2003254085A (en) * | 2002-03-04 | 2003-09-10 | Yuzo Terai | Blast furnace air supply heating method of ironmaking coproduction |
| WO2011026940A1 (en) * | 2009-09-04 | 2011-03-10 | Paul Wurth S.A. | Recovery of energy from blast furnace gas in an expansion turbine |
| CN201924027U (en) * | 2010-12-15 | 2011-08-10 | 成都发动机（集团）有限公司 | Dual turbine set for recovering energy of residual heat and residual pressure of blast furnace gas |
| CN102183152A (en) * | 2011-01-12 | 2011-09-14 | 浙江大学 | Steel enterprise associated energy combined cycle power generation system and method |
| CN202304458U (en) * | 2011-10-28 | 2012-07-04 | 西安陕鼓动力股份有限公司 | Blast furnace iron making and sintering energy recovery combined generator unit |
-
2011
- 2011-10-28 CN CN2011103337526A patent/CN102352784A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0175855A2 (en) * | 1984-09-26 | 1986-04-02 | MANNESMANN Aktiengesellschaft | Blast furnace plant |
| JP2003254085A (en) * | 2002-03-04 | 2003-09-10 | Yuzo Terai | Blast furnace air supply heating method of ironmaking coproduction |
| WO2011026940A1 (en) * | 2009-09-04 | 2011-03-10 | Paul Wurth S.A. | Recovery of energy from blast furnace gas in an expansion turbine |
| CN201924027U (en) * | 2010-12-15 | 2011-08-10 | 成都发动机（集团）有限公司 | Dual turbine set for recovering energy of residual heat and residual pressure of blast furnace gas |
| CN102183152A (en) * | 2011-01-12 | 2011-09-14 | 浙江大学 | Steel enterprise associated energy combined cycle power generation system and method |
| CN202304458U (en) * | 2011-10-28 | 2012-07-04 | 西安陕鼓动力股份有限公司 | Blast furnace iron making and sintering energy recovery combined generator unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986846A (en) * | 2015-02-27 | 2016-10-05 | 福建三钢闽光股份有限公司 | Butt joint type no-load cooling device of afterheat and complementary energy recovery combined generator set |
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Application publication date: 20120215 |