CN103614501B - The non-stop-machine operation process of dry method dust blast furnace staying TRT - Google Patents
The non-stop-machine operation process of dry method dust blast furnace staying TRT Download PDFInfo
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- CN103614501B CN103614501B CN201310670583.4A CN201310670583A CN103614501B CN 103614501 B CN103614501 B CN 103614501B CN 201310670583 A CN201310670583 A CN 201310670583A CN 103614501 B CN103614501 B CN 103614501B
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Abstract
The invention discloses the non-stop-machine operation process of a kind of dry method dust blast furnace staying TRT, relate to TRT blast furnace gas excess pressure power generating device field, a kind of non-stop-machine operation process of dry method dust blast furnace staying TRT that TRT temperature can not be caused too high is provided.The core of the non-stop-machine operation process of blast furnace staying TRT is turbine main frame electric operation, reducer unit standard-sized sheet, and because turbine main frame electric operation can produce suction, blast furnace gas is back to the gas inlet of turbine main frame from turbine main frame gas exit through reducer unit.Blast furnace gas circulates in TRT system, is taken away by the heat that TRT system is put aside, and the one formed between heat absorption and heat release balances, and solves the phenomenon that TRT system temperature raises; Turbine main frame, as motor running, changes the direction of Gas Flow, and the rotor spindle vibration values of turbine main frame or shift value can increase to some extent, but parameter value variation impact is little and far below alarming value, within the scope of the License Value that producer specifies.
Description
Technical field
The present invention relates to TRT (blast furnace gas excess pressure power generating device) field, particularly relate to the non-stop-machine operation process of a kind of dry method dust blast furnace staying TRT.
Background technology
TRT refers to blast furnace gas excess pressure power generating device, and the turbo-expander of to be a kind of with blast furnace gas be medium, coal gas flows to turbine rotor center from rotor edge by blade, then flow to outside turbine-casing.Due to reversed flow, making the original pressure energy of gas through irreversible adiabatic expansion work done, is mechanical energy by pressure energy, drive turbine rotor to rotate, thus drive electrical generators externally exports electric energy.
Blast furnace staying is divided into short term damping-down and long term blowing-down, and the short term damping-down time is less than 4 hours and does not effectively cut off with gaspipe network, and the long term blowing-down time is greater than 4 hours and effectively need cut off with gaspipe network.As long as former operation scheme enters damping down state for blast furnace, TRT must shut down cooperation.After blast furnace staying terminates, stable general all more than 6 hours from putting in blast to conditions of blast furnace, because conditions of blast furnace during this runs and instability, start the fine adjustment that TRT can affect furnace top pressure, even may cause the phenomenon that furnace top pressure is not normal, affect blast furnace safety and run, therefore must could start TRT after the working of a furnace is stable, make TRT idle time very long, larger on the impact of TRT generated energy.
During blast furnace short term damping-down, the turbine main frame of TRT can pass through electrical energy drive, can reduce TRT stop time like this to improve generated energy.But TRT does not shut down operation and there is following problem when blast furnace short term damping-down:
1, TRT and pipe temperature thereof raise
Under blast furnace in short-term damping down state TRT as electric motor in operational process, because of reverse power run time, electric energy conversion is mechanical energy, and mechanical energy maintains the constant rotational speed of TRT, and TRT rotor movable vane and gas friction produce heat energy and the blast furnace gas temperature of TRT and pipeline thereof is raised;
2, TRT axle system abnormal parameters
TRT is as changing coal gas original air flow line during motor running, coal gas is flowed to blade edge by rotor center, causes turbine rotor shaft strength situation to change, and the vibration or displacement that cause axle are become large.Due to the parameter such as shaft vibration, axle temperature, displacement of turbine and generator, being equipped with and reporting to the police and tripping operation interlock protection, can available protecting turbine and generator stopping transport in time when occurring abnormal.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of non-stop-machine operation process of dry method dust blast furnace staying TRT that TRT temperature can not be caused too high.
In order to solve the problem, the technical scheme adopted is: the non-stop-machine operation process of dry method dust blast furnace staying TRT comprises the steps:
A, blast furnace start checking operation and standard-sized sheet reducer unit, confirm that blast furnace opens bleeding valve after entering damping down operation, gravitational precipitator cuts off lobe and falls, now the quiet wing aperture master mode of turbine main frame is automatic mode, because in blast furnace staying process, the difference of blast furnace top pressure set(ting)value and actual value is comparatively large, the quiet wing there will be standard-sized sheet phenomenon;
B, the confirmation all filter taps of dry bag-type dust-removal system and back-flushing valve complete shut-down;
C, turbine main frame start electric operation, quiet wing aperture master mode is switched to manual mode by automatic mode, by the quiet wing opening value of artificial manually input, quiet wing aperture is slowly closed to 35%, because turbine main frame electric operation can produce suction, blast furnace gas is back to the gas inlet of turbine main frame from turbine main frame gas exit through reducer unit;
The temperature variation of d, the vibration observing the rotor spindle of turbine main frame, axle temperature and displacement and turbine main frame gas exit, if parameters detected value occurs abnormal in upward status, then continue to reduce quiet wing aperture, quiet wing aperture often reduces 5% observation 5 minutes, until keep the quiet wing current aperture when each parameter does not rise, now TRT starts the steady running of blast furnace staying phase;
E, blast furnace staying terminate, blast furnace top pressure starts to raise, after blast furnace top pressure reaches more than 30kPa, be automatic mode by quiet wing aperture control mode switch, now blast furnace top pressure controls jointly to be regulated by TRT and reducer unit, then reducer unit can complete shut-down gradually, until blast furnace top pressure is regulated by TRT.
The invention has the beneficial effects as follows: blast furnace gas circulates in TRT system, taken away by the heat that TRT system is put aside, the one formed between heat absorption and heat release balances, and solves the phenomenon that TRT system temperature raises; Turbine main frame, as motor running, changes the direction of Gas Flow, and the rotor spindle vibration values of turbine main frame or shift value can increase to some extent, but parameter value variation impact is little and far below alarming value, within the scope of the License Value that producer specifies.
Accompanying drawing explanation
Fig. 1 is process schematic representation under TRT nominal situation;
The non-stop-machine operation process schematic diagram of Fig. 2 blast furnace staying TRT;
Be labeled as in figure: bag-type dust removal system 1, valve system 2, turbine main frame 3, generator 4, turbine main frame gas inlet 5, turbine main frame gas exit 6, reducer unit 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
When dry method dust TRT normally works as shown in Figure 1, TRT comprises valve system 2 and turbine main frame 3, blast furnace gas after bag-type dust removal system 1 purifies enters turbine main frame 3 through valve system 2, blast furnace gas drives the rotor turns of turbine main frame 3, and the rotor of turbine main frame 3 drives generator 4 to generate electricity.Blast furnace gas is discharged after driving the rotor of turbine main frame 3, and blast furnace top pressure is regulated by TRT.Reducer unit 7 is in parallel with TRT, and when TRT shutdown or fault, TRT switches to reducer unit to carry out blast furnace top pressure adjustment.
The non-stop-machine operation process of dry method dust blast furnace staying TRT as shown in Figure 2.This technique final state is turbine main frame 3 electric operation, reducer unit 7 standard-sized sheet, because turbine main frame 3 electric operation can produce suction, blast furnace gas is back to turbine main frame gas inlet 5 from turbine main frame gas exit 6 through reducer unit 7, blast furnace gas circulates in TRT system, taken away by the heat that TRT system is put aside, the one formed between heat absorption and heat release balances, and solves the phenomenon that TRT system temperature raises; Turbine main frame 3, as motor running, changes the direction of Gas Flow, and the rotor spindle vibration values of turbine main frame 3 or shift value can increase to some extent, but parameter value variation impact is little and far below alarming value, within the scope of the License Value that producer specifies.
Concrete, the non-stop-machine operation process of dry method dust blast furnace staying TRT comprises the steps:
A, blast furnace start checking operation and standard-sized sheet reducer unit 7, confirm that blast furnace opens bleeding valve after entering damping down operation, gravitational precipitator cuts off lobe and falls, now the quiet wing aperture master mode of turbine main frame 3 is automatic mode, because in blast furnace staying process, the difference of blast furnace top pressure set(ting)value and actual value is comparatively large, the quiet wing there will be standard-sized sheet phenomenon;
B, the confirmation dry bag-type all filter taps of dust-removal system 1 and back-flushing valve complete shut-down;
C, turbine main frame 3 start electric operation, quiet wing aperture master mode is switched to manual mode by automatic mode, by the quiet wing opening value of artificial manually input, quiet wing aperture is slowly closed to 35%, because turbine main frame 3 electric operation can produce suction, blast furnace gas is back to turbine main frame gas inlet 5 from turbine main frame gas exit 6 through reducer unit 7;
The temperature variation of d, the vibration observing the rotor spindle of turbine main frame 3, axle temperature and displacement and turbine main frame gas exit 6, if parameters detected value occurs abnormal in upward status, then continue to reduce quiet wing aperture, quiet wing aperture often reduces 5% observation 5 minutes, until keep the quiet wing current aperture when each parameter does not rise, now TRT starts the steady running of blast furnace staying phase;
E, blast furnace staying terminate, blast furnace top pressure starts to raise, after blast furnace top pressure reaches more than 30kPa, be automatic mode by quiet wing aperture control mode switch, now blast furnace top pressure controls jointly to be regulated by TRT and reducer unit 7, then reducer unit 7 meeting complete shut-down gradually, until blast furnace top pressure is regulated by TRT.
Claims (1)
1. the non-stop-machine operation process of dry method dust blast furnace staying TRT, is characterized in that comprising the steps:
A, blast furnace start checking operation and standard-sized sheet reducer unit (7), confirm that blast furnace opens bleeding valve after entering damping down operation, gravitational precipitator cuts off lobe and falls, now the quiet wing aperture master mode of turbine main frame (3) is automatic mode, because in blast furnace staying process, the difference of blast furnace top pressure set(ting)value and actual value is comparatively large, the quiet wing there will be standard-sized sheet phenomenon;
B, confirmation dry bag-type dust-removal system (1) all filter taps and back-flushing valve complete shut-down;
C, turbine main frame (3) start electric operation, quiet wing aperture master mode is switched to manual mode by automatic mode, by the quiet wing opening value of artificial manually input, quiet wing aperture is slowly closed to 35%, because turbine main frame (3) electric operation can produce suction, blast furnace gas is back to turbine main frame gas inlet (5) from turbine main frame gas exit (6) through reducer unit (7);
The temperature variation of d, the vibration of rotor spindle observing turbine main frame (3), axle temperature and displacement and turbine main frame gas exit (6), if parameters detected value occurs abnormal in upward status, then continue to reduce quiet wing aperture, quiet wing aperture often reduces 5% observation 5 minutes, until keep the quiet wing current aperture when each parameter does not rise, now TRT starts the steady running of blast furnace staying phase;
E, blast furnace staying terminate, blast furnace top pressure starts to raise, after blast furnace top pressure reaches more than 30kPa, be automatic mode by quiet wing aperture control mode switch, now blast furnace top pressure controls jointly to be regulated by TRT and reducer unit (7), then reducer unit (7) meeting complete shut-down gradually, until blast furnace top pressure is regulated by TRT.
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| CN105525953A (en) * | 2016-02-18 | 2016-04-27 | 山东钢铁股份有限公司 | Method and device for eliminating salt accumulated in TRT power generation system and TRT power generation system |
| CN113355469B (en) * | 2021-06-01 | 2023-04-07 | 攀钢集团攀枝花钢钒有限公司 | Environment-friendly method and device for bleeding during starting and stopping of blast furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
| CN201696392U (en) * | 2010-06-29 | 2011-01-05 | 莱芜钢铁股份有限公司 | Guiding device for TRT system servo actuator |
| CN202544938U (en) * | 2012-02-17 | 2012-11-21 | 宣化钢铁集团有限责任公司 | Protector for preventing gas leak of drainage system of blast furnace gas residual pressure generating device |
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2013
- 2013-12-10 CN CN201310670583.4A patent/CN103614501B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
| CN201696392U (en) * | 2010-06-29 | 2011-01-05 | 莱芜钢铁股份有限公司 | Guiding device for TRT system servo actuator |
| CN202544938U (en) * | 2012-02-17 | 2012-11-21 | 宣化钢铁集团有限责任公司 | Protector for preventing gas leak of drainage system of blast furnace gas residual pressure generating device |
Non-Patent Citations (2)
| Title |
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| 《唐钢1#高炉TRT控制系统》;毛宇丰;《冶金自动化》;19961231(第4期);13-16页 * |
| 《重钢750m3高炉TRT控制系统》;杨智 等;《自动化与仪器仪表》;20071231(第2期);52-55 * |
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