CN105066713B - Process capable of improving waste heat recovery yield of annular cooler - Google Patents
Process capable of improving waste heat recovery yield of annular cooler Download PDFInfo
- Publication number
- CN105066713B CN105066713B CN201510428857.8A CN201510428857A CN105066713B CN 105066713 B CN105066713 B CN 105066713B CN 201510428857 A CN201510428857 A CN 201510428857A CN 105066713 B CN105066713 B CN 105066713B
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- China
- Prior art keywords
- flue
- aerator
- central cooler
- waste heat
- heat recovery
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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
-
- 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 invention relates to a process capable of improving the waste heat recovery yield of an annular cooler. The process comprises the specific steps that 1, an air blower, connected with an air bellow, on the lower portion of a trolley is started when environment temperature is below -10 DEG C; 2, the initial opening degree of an air door of the air blower is adjusted to 20%; 3, it is ensured that hot air is exhausted out of a sealed position of the annular cooler, and a sealed area of the annular cooler is made to run in a micro-positive pressure state; and 4, the opening degree of the air door of the air blower is adjusted according to flue gas temperature, the opening degree of the air door of the air blower is adjusted to 30% when the flue gas temperature is larger than 250 DEG C, and the opening degree of the air door of the air blower is adjusted to 40% when the flue gas temperature is larger than 350 DEG C. The sealed area of the annular cooler is made to run in the micro-positive pressure state, so that cold air entering the sealed space between a gas hood of the annular cooler and the trolley is reduced, and therefore the temperature of flue gas in the annular cooler is increased, and it is guaranteed that heat is absorbed to the maximum degree. The yield of the flue gas is improved by 25-27 t/h.
Description
Technical field
The present invention relates to central cooler heat recovery technology field, more particularly to a kind of raising central cooler waste heat recovery yield
Technique.
Background technology
In central cooler Transforming Engineering, one cold-zone of central cooler arranges two collection conduits, and two cold-zones arrange a receipts
Collection pipeline, configures electronic isolation butterfly valve.During normal work, the valve is opened；Two pipelines of one cold-zone are merged into a pipeline
After carry out dedusting, the flue gas collected after dedusting by flue send into boiler high-temperature flue gas import；One pipeline of two cold-zones is received
The flue gas of collection sends into the low-temperature flue gas import of boiler by flue.140 DEG C or so flue gases of boiler export, are sent into by circulating fan
Cycle flue, is connected to the bellows of a cold-zone chassis bottom, recycles.Due to the central cooler waste-heat recovery device for newly increasing, pot
The flue gas recirculation that stove is reclaimed is utilized, and eliminates three aerators of original chassis bottom.Use in central cooler waste-heat recovery device
During, the flue-gas temperature reclaimed by boiler is low, and flow is little, makes central cooler be internally formed negative pressure after being connected to central cooler, outside
Cold air entered inside central cooler by sealing ring between ring cold machine smoke hood and chassis, reduce central cooler internal temperature, subtract
The yield of flue gas is lacked.Therefore the technique for needing a kind of simple structure, effect good effectively improves central cooler waste heat recovery product
Amount.
The content of the invention
The technical problem to be solved there is provided the good technique of a kind of simple structure, effect and effectively improve ring
Cold waste heat recovery yield.
For achieving the above object, the present invention employs the following technical solutions realization：
A kind of technique for improving central cooler waste heat recovery yield, comprises the following steps that：
1., when ambient temperature reaches less than -10 DEG C, the aerator that chassis bottom connects bellows is opened；
2 adjust aerator air door initial openings to 20%；
3. confirm have steam to discharge at central cooler sealing, central cooler sealing area is run under slight positive pressure state；
4. aerator throttle opening is adjusted according to flue-gas temperature, when flue-gas temperature is more than 250 DEG C, tune up the wind of aerator
Door aperture is to 30%；When flue-gas temperature is more than 350 DEG C, the throttle opening 40% of aerator is tuned up.
Improve the central cooler waste-heat recovery device of central cooler waste heat recovery yield, including central cooler, petticoat pipe, chassis, sealing
System, central cooler top flue, waste heat boiler, circulating fan, cycle flue, wherein aerator, central cooler, petticoat pipe, platform
Car and sealing system constitute 2nd area of mono- areas of Huan Leng and Huan Leng, bis- area top flue connection waste heat pot of mono- areas of Huan Leng and Huan Leng
Stove, heat boiler outlet are provided with circulating fan, and circulating fan is connected with cycle flue, and cycle flue is connected under a cold-zone chassis
The bellows in portion, cycle flue are provided with circulating fan outlet electric butterfly valve, and aerator is connected to the bellows of a cold-zone chassis bottom,
Aerator flue is provided with electric butterfly valve, is connected between aerator flue and cycle flue.
Compared with prior art, the invention has the beneficial effects as follows：
The present invention makes central cooler sealing area run under slight positive pressure state, and reducing
Cold air enter, so as to improve central cooler inside smoke temperature, it is ensured that heat at utmost absorbs.Make flue gas output increased
25～27t/h.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1- central cooler 2- petticoat pipe 3- chassis 4- sealing system 5- central coolers top flue 6- waste heat pots
Stove 7- circulating fan 8- cycle flue 9-1# aerator 10- circulating fans outlet electric butterfly valve 11- aerator flues are electronic
Butterfly valve
Specific embodiment
The specific embodiment of the present invention is further illustrated with reference to embodiment：
As shown in figure 1, the central cooler waste-heat recovery device of central cooler waste heat recovery yield is improved, including central cooler 1, petticoat pipe
2nd, chassis 3, sealing system 4, central cooler top flue 5, waste heat boiler 6, circulating fan 7, cycle flue 8,1# aerators-
9, wherein central cooler 1, petticoat pipe 2, chassis 3 and sealing system 4 constitutes 2nd area of mono- areas of Huan Leng and Huan Leng, 2nd area of mono- areas of Huan Leng and Huan Leng
Top flue 5 connects waste heat boiler 6, and the outlet of waste heat boiler 6 is provided with circulating fan 7, circulating fan 7 and 8 phase of cycle flue
Even, cycle flue 8 is connected to the bellows of a cold-zone chassis bottom, and cycle flue 8 is provided with circulating fan outlet electric butterfly valve 10,
1# aerators 9 are connected to the bellows of a cold-zone chassis bottom, and aerator flue is provided with electric butterfly valve 11, aerator flue with follow
It is connected between annular smoke flue.
Embodiment 1
A kind of technique for improving central cooler waste heat recovery yield, comprises the following steps that：
1., when ambient temperature reaches -10 DEG C, the aerator that chassis bottom connects bellows is opened；
2 adjust aerator air door initial openings to 20%；
3. confirm have steam to discharge at central cooler sealing, central cooler sealing area is run under slight positive pressure state；
4., when flue-gas temperature is increased to 250 DEG C, the throttle opening of aerator is tuned up to 30%；Detect flue-gas temperature 250
When between DEG C -350 DEG C, the throttle opening 30% of aerator is kept；
When flue-gas temperature is increased to 350 DEG C, the throttle opening of aerator is tuned up to 40%；Detection flue-gas temperature is more than
When 350 DEG C, the throttle opening 40% of aerator is kept；
When flue-gas temperature is dropped to below 350 DEG C, reduce the throttle opening of aerator to 30%.
Embodiment 2
A kind of technique for improving central cooler waste heat recovery yield, comprises the following steps that：
1., when ambient temperature reaches -15 DEG C, the aerator that chassis bottom connects bellows is opened；
2 adjust aerator air door initial openings to 20%；
3. confirm have steam to discharge at central cooler sealing, central cooler sealing area is run under slight positive pressure state；
4., when flue-gas temperature is increased to 250 DEG C, the throttle opening of aerator is tuned up to 30%；Detect flue-gas temperature 250
When between DEG C -350 DEG C, the throttle opening 30% of aerator is kept；
When flue-gas temperature is increased to 350 DEG C, the throttle opening of aerator is tuned up to 40%；Detection flue-gas temperature is more than
When 350 DEG C, the throttle opening 40% of aerator is kept；
When flue-gas temperature is dropped to below 350 DEG C, reduce the throttle opening of aerator to 30%.
Described above is only the ultimate principle of the present invention, and not the present invention is imposed any restrictions, every right according to the present invention
Which carries out equivalent variations and modification, within the category of the art of this patent protection scheme.
Claims (1)
1. a kind of technique for improving central cooler waste heat recovery yield, central cooler waste-heat recovery device, including central cooler, petticoat pipe, platform
Car, sealing system, central cooler top flue, waste heat boiler, circulating fan, cycle flue, aerator, wherein central cooler,
Petticoat pipe, chassis and sealing system constitute 2nd area of mono- areas of Huan Leng and Huan Leng, the bis- area top flue connection of mono- areas of Huan Leng and Huan Leng
Waste heat boiler, heat boiler outlet are provided with circulating fan, and circulating fan is connected with cycle flue, and cycle flue is connected to a cold-zone
The bellows of chassis bottom, cycle flue are provided with circulating fan outlet electric butterfly valve, and aerator is connected to a cold-zone chassis bottom
Bellows, aerator flue is provided with electric butterfly valve, is connected between aerator flue and cycle flue, central cooler waste heat recovery
Technique, it is characterised in that comprise the following steps that：
1) when ambient temperature reaches less than -10 DEG C, the aerator that chassis bottom connects bellows is opened；
2) aerator air door initial opening is adjusted to 20%；
3) confirm have steam to discharge at central cooler sealing, central cooler sealing area is run under slight positive pressure state；
4) aerator throttle opening is adjusted according to flue-gas temperature, when flue-gas temperature is more than 250 DEG C, the air door for tuning up aerator is opened
Spend to 30%；When flue-gas temperature is more than 350 DEG C, the throttle opening 40% of aerator is tuned up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428857.8A CN105066713B (en) | 2015-07-21 | 2015-07-21 | Process capable of improving waste heat recovery yield of annular cooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428857.8A CN105066713B (en) | 2015-07-21 | 2015-07-21 | Process capable of improving waste heat recovery yield of annular cooler |
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| Publication Number | Publication Date |
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| CN105066713A CN105066713A (en) | 2015-11-18 |
| CN105066713B true CN105066713B (en) | 2017-04-19 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113916011A (en) * | 2021-09-10 | 2022-01-11 | 马鞍山钢铁股份有限公司 | Sintering cooling waste heat micro-positive pressure recovery control system and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238120A (en) * | 1978-10-11 | 1980-12-09 | Dravo Corporation | Sealing device for sinter cooler |
| CN201198771Y (en) * | 2008-05-12 | 2009-02-25 | 浙江西子联合工程有限公司 | Steam compensating type steam turbine waste heat power generation system allocated with high-efficiency sintered double-pressure waste heat boiler |
| CN201621970U (en) * | 2010-03-19 | 2010-11-03 | 湖南永清环保股份有限公司 | Device for controlling air leakage and pressure of waste gas inside recirculation cooler seal cover |
| CN102980413A (en) * | 2012-12-05 | 2013-03-20 | 江苏永钢集团有限公司 | Afterheat utilization device of sintering machine |
| CN203336981U (en) * | 2013-05-06 | 2013-12-11 | 北京佰能蓝天科技有限公司 | Novel sintered ring refrigerator flue gas waste heat recycling system |
| CN103644743A (en) * | 2013-12-11 | 2014-03-19 | 北京志能祥赢节能环保科技有限公司 | Combination system for efficiently using waste heat in iron mine sintering cooling process |
| CN204063985U (en) * | 2014-07-08 | 2014-12-31 | 中冶北方（大连）工程技术有限公司 | Sintering circular-cooler waste-heat recovery device |
| CN104457295A (en) * | 2014-11-17 | 2015-03-25 | 北京中冶设备研究设计总院有限公司 | Waste heat utilization air and flue gas system device and method of vestibule type circular cooler |
| CN204854375U (en) * | 2015-07-21 | 2015-12-09 | 鞍钢集团工程技术有限公司 | Cold quick -witted waste heat recovery device of ring |
-
2015
- 2015-07-21 CN CN201510428857.8A patent/CN105066713B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238120A (en) * | 1978-10-11 | 1980-12-09 | Dravo Corporation | Sealing device for sinter cooler |
| CN201198771Y (en) * | 2008-05-12 | 2009-02-25 | 浙江西子联合工程有限公司 | Steam compensating type steam turbine waste heat power generation system allocated with high-efficiency sintered double-pressure waste heat boiler |
| CN201621970U (en) * | 2010-03-19 | 2010-11-03 | 湖南永清环保股份有限公司 | Device for controlling air leakage and pressure of waste gas inside recirculation cooler seal cover |
| CN102980413A (en) * | 2012-12-05 | 2013-03-20 | 江苏永钢集团有限公司 | Afterheat utilization device of sintering machine |
| CN203336981U (en) * | 2013-05-06 | 2013-12-11 | 北京佰能蓝天科技有限公司 | Novel sintered ring refrigerator flue gas waste heat recycling system |
| CN103644743A (en) * | 2013-12-11 | 2014-03-19 | 北京志能祥赢节能环保科技有限公司 | Combination system for efficiently using waste heat in iron mine sintering cooling process |
| CN204063985U (en) * | 2014-07-08 | 2014-12-31 | 中冶北方（大连）工程技术有限公司 | Sintering circular-cooler waste-heat recovery device |
| CN104457295A (en) * | 2014-11-17 | 2015-03-25 | 北京中冶设备研究设计总院有限公司 | Waste heat utilization air and flue gas system device and method of vestibule type circular cooler |
| CN204854375U (en) * | 2015-07-21 | 2015-12-09 | 鞍钢集团工程技术有限公司 | Cold quick -witted waste heat recovery device of ring |
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| CN105066713A (en) | 2015-11-18 |
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