CN203772035U - Power generation system capable of utilizing waste heat of steel mill - Google Patents
Power generation system capable of utilizing waste heat of steel mill Download PDFInfo
- Publication number
- CN203772035U CN203772035U CN201420165000.2U CN201420165000U CN203772035U CN 203772035 U CN203772035 U CN 203772035U CN 201420165000 U CN201420165000 U CN 201420165000U CN 203772035 U CN203772035 U CN 203772035U
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- steam
- pipeline
- admission
- motor
- driven valve
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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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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a power generation system capable of utilizing waste heat of a steel mill and belongs to the technical field of thermal power generation. The power generation system comprises a converter, a shaft furnace, a heating furnace, a steam turbine, a power generator and a heat accumulator, wherein the output end of the steam turbine is connected with the power generator, the steam output end of the converter is connected with the steam inlet end of the steam turbine through a first steam inlet pipeline, and a first steam-water separator is arranged on the first steam inlet pipeline. Steam output ends of the shaft furnace and the heating furnace are connected with the steam inlet end of the steam turbine through a second steam inlet pipeline, and a second steam-water separator is arranged on the second steam inlet pipeline. The first steam inlet pipeline is communicated with the heat accumulator through a branch pipeline, and the heat output end of the heat accumulator is communicated with a third pipeline through a fourth pipeline. The power generation system can collect and utilize steam generated by different steam generation points in the steel mill in a unified mode, therefore, the energy utilization rate is increased, and energy conservation and emission reduction are facilitated.
Description
Technical field
The utility model relates to a kind of electricity generation system, specifically a kind of steel mill afterheat generating system.
Background technology
Iron and steel enterprise, as the rich and influential family of energy resource consumption, also can produce a large amount of waste heats, so steel industry waste heat recovery has a high potential when consuming the energy.At present, domestic each iron and steel enterprise all adopts stove inner flue evaporated cooling system, the entrained heats of inner flue gas of the stove such as converter, palletizing shaft furnace, heater for rolling steel are produced to afterheat steam by heat exchange, when meeting inner flue gas of the stove dedusting requirement, effectively reclaimed smelting furnace waste heat like this.But discontinuity and fluctuation due to Converter Steam, add that in steel mill, afterheat steam produces relatively dispersion of point, the afterheat steam in most steel mills is not rationally utilized, and a lot of iron and steel enterprises directly diffuse afterheat steam, cause heat-energy losses, reduced energy utilization rate.
Utility model content
The utility model technical issues that need to address are to provide a kind of steel mill afterheat generating system, can make full use of steel mill's smelting furnace afterheat steam, improve energy utilization rate.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
Steel mill's afterheat generating system, comprises steam turbine, and the admission end of steam turbine is communicated with the steam output end of converter by pipeline, and the output of steam turbine connects generator, also comprises shaft furnace and heating furnace; The steam output end of described converter is connected with the admission end of steam turbine by the first admission pipeline, on the first admission pipeline, be provided with the first steam-water separator, on the first admission pipeline of the first steam-water separator both sides, be respectively arranged with the first motor-driven valve and the second motor-driven valve;
The steam output end of described shaft furnace and heating furnace is connected with the admission end of steam turbine by the second admission pipeline, on the second admission pipeline, be provided with the second steam-water separator, on the second admission pipeline between the second steam-water separator and steam turbine, be provided with the 3rd motor-driven valve;
Between described the first admission pipeline and the second admission pipeline, by the 3rd pipeline, be connected, the connected entrance of the 3rd pipeline and the first admission pipeline is arranged on the first admission pipeline between the first steam-water separator and the second motor-driven valve, and the connected entrance of the 3rd pipeline and the second admission pipeline is arranged on the second admission pipeline between the second steam-water separator and the 3rd motor-driven valve; On described the 3rd pipeline, be also provided with the 5th motor-driven valve;
Described the first admission pipeline is also communicated with storage heater by arm, and the heat output of storage heater, by the 4th pipeline and the 3rd pipeline communication, is provided with the 6th motor-driven valve on the 4th pipeline; The connected entrance of the 4th pipeline and the 3rd pipeline is arranged on the 3rd pipeline between the 5th motor-driven valve and the first admission pipeline.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The afterheat steam unification that the utility model can produce steel mill's converter, shaft furnace and heating furnace uses, Converter Steam enters steam turbine through the first admission pipeline, shaft furnace, heating furnace steam enter steam turbine after the second steam-water separator, the unified collection of steam that so just different steam can be produced to point utilized, reduce heat-energy losses, improve energy utilization rate, realize energy-saving and emission-reduction.
Described the first admission pipeline is also communicated with storage heater by arm, and the heat output of storage heater, by the 4th pipeline and the 3rd pipeline communication, is provided with the 6th motor-driven valve on the 4th pipeline; The connected entrance of the 4th pipeline and the 3rd pipeline is arranged on the 3rd pipeline between the 5th motor-driven valve and the first admission pipeline, when Converter Steam quantity not sufficient, the first motor-driven valve is opened, Converter Steam enters steam turbine via the 4th pipeline, the 3rd pipeline, the first admission pipeline successively after storage heater voltage stabilizing, avoid Converter Steam intermittence and the impact of fluctuation on steam turbine, guaranteed Turbine Safety stable operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, the 1, first steam-water separator, the 2, second steam-water separator, 3, steam turbine, 4, generator, 5, storage heater, 101, the first motor-driven valve, the 102, second motor-driven valve, the 103, the 3rd motor-driven valve, 104, the 4th motor-driven valve, 105, the 5th motor-driven valve, the 201, first admission pipeline, the 202, second admission pipeline, 203, the 3rd pipeline, the 204, the 4th pipeline.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details:
Steel mill's afterheat generating system, comprises converter, shaft furnace, heating furnace, steam turbine 3, generator 4 and storage heater 5.Converter Steam output is connected with steam turbine admission end by the first admission pipeline 201, is provided with the first steam-water separator 1, for removing the moisture of Converter Steam on the first admission pipeline; On the first admission pipeline 201 of the first steam-water separator 1 both sides, be respectively arranged with the first motor-driven valve 101 and the second motor-driven valve 102.
The steam output end of shaft furnace and heating furnace is connected with the admission end of steam turbine by the second admission pipeline 202, is provided with the second steam-water separator 2 on the second admission pipeline, for removing shaft furnace and heating furnace water from steam divides; On the second admission pipeline 202 between the second steam-water separator 2 and steam turbine, be provided with the 3rd motor-driven valve 103, for controlling shaft furnace, heating furnace steam, after the second steam-water separator 2, directly enter the flow of steam turbine.
Between the first admission pipeline and the second admission pipeline, by the 3rd pipeline 203, be connected, the connected entrance of the 3rd pipeline and the first admission pipeline 201 is arranged on the first admission pipeline 201 between the first steam-water separator 1 and the second motor-driven valve 102, the connected entrance of the 3rd pipeline and the second admission pipeline is arranged on the second admission pipeline between the second steam-water separator 2 and the 3rd motor-driven valve 103, is also provided with the 5th motor-driven valve 105 on the 3rd pipeline.When Converter Steam quantity not sufficient, can, by opening the 5th motor-driven valve 105, make shaft furnace, heating furnace steam supplement steam turbine vapour as filling.
The first admission pipeline 201 is also communicated with storage heater 5 by arm, and the heat output of storage heater 5 is communicated with the 3rd pipeline 203 by the 4th pipeline 204, is provided with the 6th motor-driven valve 106 on the 4th pipeline 204; The connected entrance of the 4th pipeline 204 and the 3rd pipeline 203 is arranged on the 3rd pipeline 203 between the 5th motor-driven valve 105 and the first admission pipeline 201.
The utility model operation principle is as described below: when Converter Steam pressure is more than or equal to 0.7MPa, the first motor-driven valve 101 is opened, and the second motor-driven valve 102 is often opened, and Converter Steam directly enters steam turbine after the first steam-water separator 1 dewaters; When Converter Steam pressure be less than 0.7MPa or flow be less than Converter Steam metered flow 20% time, the first motor-driven valve 101 cuts out, Converter Steam enters storage heater by arm, the 6th motor-driven valve 106 is opened, steam after storage heater 5 voltage stabilizings enters steam turbine via the 4th pipeline 204, the 3rd pipeline 203, the first admission pipeline 201 successively, avoid Converter Steam intermittence and the impact of fluctuation on steam turbine, guaranteed Turbine Safety stable operation; When the heat output steam pressure of storage heater 5 is less than 0.5Mpa, the 6th motor-driven valve 106 cuts out; The heat output steam flow of storage heater 5 is less than rated value and the first motor-driven valve 101 when closed condition, and the 5th motor-driven valve 105 is opened, and while not meeting above-mentioned two conditions, the 5th motor-driven valve 105 does not cut out.
On described the second admission pipeline 202, the 3rd motor-driven valve 103 places are provided with bypass, and the 4th motor-driven valve 104 is set in bypass, enable the 4th motor-driven valve 104 when the 3rd motor-driven valve 103 breaks down.
During actual motion, Converter Steam is as the main vapour of steam turbine 3, and shaft furnace, heating furnace are as the filling of steam turbine 3, the steam situation producing according to converter, shaft furnace and heating furnace, the valve being arranged on each pipeline by adjusting switches main vapour, filling, guarantees steam turbine 3 safe and stable operations.Steam turbine 3 is coaxially arranged with generator 4, and the continual and steady work of steam turbine 3 can drive generator 4 to continue generating, realizes steel mill's cogeneration, improves thermal source utilization rate.
Claims (1)
1.Yi Zhong steel mill afterheat generating system, comprises steam turbine (3), and the admission end of steam turbine is communicated with the steam output end of converter by pipeline, and the output of steam turbine (3) connects generator (4); It is characterized in that: also comprise shaft furnace and heating furnace; The steam output end of described converter is connected with the admission end of steam turbine (3) by the first admission pipeline (201), on the first admission pipeline (201), be provided with the first steam-water separator (1), on the first admission pipeline (201) of the first steam-water separator (1) both sides, be respectively arranged with the first motor-driven valve (101) and the second motor-driven valve (102);
The steam output end of described shaft furnace and heating furnace is connected with the admission end of steam turbine (3) by the second admission pipeline (202), on the second admission pipeline (202), be provided with the second steam-water separator (2), on the second admission pipeline (202) between the second steam-water separator (2) and steam turbine (3), be provided with the 3rd motor-driven valve (103);
Between described the first admission pipeline (201) and the second admission pipeline (202), by the 3rd pipeline (203), be connected, the first admission pipeline (201) that the connected entrance of the 3rd pipeline and (203) first admission pipelines (201) is arranged between the first steam-water separator (1) and the second motor-driven valve (102) is upper, and the connected entrance of the 3rd pipeline (203) and the second admission pipeline (202) is arranged on the second admission pipeline (202) between the second steam-water separator (2) and the 3rd motor-driven valve (103); On described the 3rd pipeline (203), be also provided with the 5th motor-driven valve (105);
Described the first admission pipeline (201) is also communicated with storage heater (5) by arm, and the heat output of storage heater (5) is communicated with the 3rd pipeline (203) by the 4th pipeline (204), is provided with the 6th motor-driven valve (106) on the 4th pipeline (204); The connected entrance of the 4th pipeline (204) and the 3rd pipeline (203) is arranged on the 3rd pipeline (203) between the 5th motor-driven valve (105) and the first admission pipeline (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165000.2U CN203772035U (en) | 2014-04-08 | 2014-04-08 | Power generation system capable of utilizing waste heat of steel mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165000.2U CN203772035U (en) | 2014-04-08 | 2014-04-08 | Power generation system capable of utilizing waste heat of steel mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772035U true CN203772035U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420165000.2U Expired - Fee Related CN203772035U (en) | 2014-04-08 | 2014-04-08 | Power generation system capable of utilizing waste heat of steel mill |
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| Country | Link |
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| CN (1) | CN203772035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242373A (en) * | 2019-06-21 | 2019-09-17 | 天津天钢联合特钢有限公司 | Gas system is given in a kind of power generation of converter waste heat steam |
-
2014
- 2014-04-08 CN CN201420165000.2U patent/CN203772035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242373A (en) * | 2019-06-21 | 2019-09-17 | 天津天钢联合特钢有限公司 | Gas system is given in a kind of power generation of converter waste heat steam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140813 Termination date: 20190408 |