CN204608065U - A kind of exhaust gas of hot-blast stove pressurizing system - Google Patents
A kind of exhaust gas of hot-blast stove pressurizing system Download PDFInfo
- Publication number
- CN204608065U CN204608065U CN201520199130.2U CN201520199130U CN204608065U CN 204608065 U CN204608065 U CN 204608065U CN 201520199130 U CN201520199130 U CN 201520199130U CN 204608065 U CN204608065 U CN 204608065U
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- China
- Prior art keywords
- hotblast stove
- valve
- stove
- chimney
- blast
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Abstract
The utility model discloses a kind of exhaust gas of hot-blast stove pressurizing system, comprise hotblast stove and chimney, be communicated with by hot air duct, cold air duct and flue tube between described hotblast stove and between hotblast stove with chimney, correspondingly on hot air duct be provided with hot blast valve, correspondingly on cold air duct be provided with cold blast valve and cold wind equalizer valve, and correspondingly on flue tube be provided with chimney valve, also be communicated with by a waste pipe between described hotblast stove and between hotblast stove with chimney, be provided with exhaust gas valve between hotblast stove and waste pipe, described waste pipe end and chimney junction are provided with waste gas and are responsible for valve.The utility model adopts waste gas in hotblast stove to realize secondary pressurising to hotblast stove, hotblast stove discharging waste gas amount is reduced, reduces the fluctuation of blast during hotblast stove pressurising, pressurising time shorten, increase blast furnace feeding air quantity, reduce because hotblast stove pressurising affects conditions of blast furnace; Structure is simple, easy to implement, practical.
Description
Technical field
the utility model belongs to technical field of chemical, relates to the waste gas pressurizing system of blast funnace hot blast stove.
Background technology
Blast funnace hot blast stove is the heat exchanger for preheating blast furnace wind; Its workflow comprises: hot blast stove burning, burn stove and pass on wind and air-supply and turn burning stove.Wherein, hot blast stove burning is blast furnace gas through gas-fired valve and combustion air through combustion air valve by burner mixed firing, the indoor checker brick of the high-temperature flue gas heat storage produced or refractory ball, enter air by smoke valve through flue tube, chimney for becoming low-temperature flue gas after heating; When hotblast stove dome temperature and low-temperature flue gas temperature reach prescribed value, close hot blast stove burning valve.Burn stove and pass on wind: open cold wind equalizer valve, by air blast to hotblast stove pressurising to close to cold air duct pressure, open hot blast valve and cold blast valve, low-temperature cold wind becomes high-temperature hot-air after stove fillings (or refractory ball) heating, then sends into blast furnace through hot air duct.Hotblast stove heating cold wind is through after a period of time, wind-warm syndrome start decline cannot meet blast furnace to during high-temperature hot-air requirement air-supply turn burning stove, namely hotblast stove cuts out air-supply valve, and hot blast inner flue gas of the stove is entered air through chimney, and hotblast stove internal pressure drops to burns oven-like state close to proceeding to after normal atmosphere again; Every blast furnace generally arranges 3 ~ 4 hotblast stoves, ensures that 1 ~ 2 hotblast stove is in air-supply all the time or burns oven-like state, loop cycle, keeps the continuous wind of blast furnace, meet high-temperature hot-air and hotblast stove accumulation of heat demand.
In actual operation, when the hotblast stove after air-supply proceeds to and burns stove, hotblast stove internal pressure can enter air by flue tube when waste gas, and cause energy loss serious, energy utilization rate is low; When burned hotblast stove proceeds to air-supply, can only carry out pressurising by cold air duct, the pressurising time is long, and can produce fluctuation to pressure in blast furnace.
Utility model content
The utility model provides a kind of exhaust gas of hot-blast stove pressurizing system, realizes secondary pressurising, reduces energy loss, improve energy utilization rate by waste pipe to hotblast stove.
The utility model takes following technical scheme:
A kind of exhaust gas of hot-blast stove pressurizing system, comprise hotblast stove and chimney, be communicated with by hot air duct, cold air duct and flue tube between described hotblast stove and between hotblast stove with chimney, correspondingly on hot air duct be provided with hot blast valve, correspondingly on cold air duct be provided with cold blast valve and cold wind equalizer valve, and correspondingly on flue tube be provided with chimney valve, also be communicated with by a waste pipe between described hotblast stove and between hotblast stove with chimney, be provided with exhaust gas valve between hotblast stove and waste pipe, described waste pipe end and chimney junction are provided with waste gas and are responsible for valve.
The beneficial effects of the utility model are: by increasing waste pipe, by waste pipe, waste gas in stove is realized secondary pressurising to needing the hotblast stove of pressurising, hotblast stove discharging waste gas amount is reduced, reduce the fluctuation of blast during hotblast stove pressurising, pressurising time shorten, increase blast furnace feeding air quantity, reduce because hotblast stove pressurising affects conditions of blast furnace; Structure is simple, easy to implement, practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-hotblast stove, 2-chimney, 3-hot air duct, 4-cold air duct, 5-flue tube, 6-waste pipe, 7-hot blast valve, 8-cold blast valve, 9-cold wind equalizer valve, 10-chimney valve, 11-exhaust gas valve, 12-waste gas supervisor valve.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the utility model and effect thereof are further elaborated.
As shown in Figure 1, a kind of exhaust gas of hot-blast stove pressurizing system, comprise hotblast stove 1 and chimney 2, hot air duct 3 is passed through between described hotblast stove 1 and between hotblast stove 1 and chimney 2, cold air duct 4 and flue tube 5 are communicated with, correspondingly on hot air duct 3 be provided with hot blast valve 7, correspondingly on cold air duct 4 be provided with cold blast valve 8 and cold wind equalizer valve 9, and correspondingly on flue tube 5 be provided with chimney valve 10, also be communicated with by a waste pipe 6 between described hotblast stove 1 and between hotblast stove 1 with chimney 2, exhaust gas valve 11 is provided with between hotblast stove 1 and waste pipe 6, described waste pipe 6 end and chimney 2 junction are provided with waste gas and are responsible for valve 12.
Put waste gas system at former hotblast stove, do not concentrate and put waste pipe 6, increase to concentrate and put waste pipe 6, and at concentrated waste pipe 6 end of putting, waste gas supervisor valve 12 is installed; During exhaust gas of hot-blast stove pressurising, close waste gas supervisor valve 12, stop and discarded pass on the hotblast stove of wind by the outer row of chimney 2 carry out pressurising to burning stove.Utilize every blast furnace that 3 ~ 4 hotblast stoves are generally set, ensure that 1 ~ 2 hotblast stove is in air-supply all the time or burns oven-like state, interval is arranged, the principle of loop cycle, burn stove pass on wind time hotblast stove other all valve closess, open exhaust gas valve 11, hotblast stove internal pressure waste gas air-supply being turned burning stove is passed into through exhaust gas valve 11 → waste pipe 6 and burns stove and pass in the hotblast stove of wind, pressurising is carried out to it, and then carries out cold wind pressurising.Be charged to close to cold air duct pressure when being charged to hotblast stove internal pressure, hotblast stove proceeds to ventilation state; Open waste gas supervisor valve 12, air-supply turns burning stove and continues pressure release, makes hotblast stove 1 internal pressure close to normal atmosphere, and hotblast stove proceeds to and burns oven-like state, the heat exchange work of the blast furnace wind that so circulated; By waste pipe, waste gas in stove is realized secondary pressurising to needing the hotblast stove of pressurising, hotblast stove discharging waste gas amount is reduced, reduces the fluctuation of blast during hotblast stove pressurising, pressurising time shorten, increase blast furnace feeding air quantity, reduce because hotblast stove pressurising affects conditions of blast furnace.
Above embodiment is only exemplary; can't the utility model be limited to, should be understood that for a person skilled in the art, under technology enlightenment provided by the utility model; other equivalent modifications of making and improvement, all should be considered as protection domain of the present utility model.
Claims (1)
1. an exhaust gas of hot-blast stove pressurizing system, comprise hotblast stove and chimney, be communicated with by hot air duct, cold air duct and flue tube between described hotblast stove and between hotblast stove with chimney, correspondingly on hot air duct be provided with hot blast valve, correspondingly on cold air duct be provided with cold blast valve and cold wind equalizer valve, and correspondingly on flue tube be provided with chimney valve, it is characterized in that: be also communicated with by a waste pipe between described hotblast stove and between hotblast stove with chimney, be provided with exhaust gas valve between hotblast stove and waste pipe, described waste pipe end and chimney junction are provided with waste gas and are responsible for valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199130.2U CN204608065U (en) | 2015-04-03 | 2015-04-03 | A kind of exhaust gas of hot-blast stove pressurizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199130.2U CN204608065U (en) | 2015-04-03 | 2015-04-03 | A kind of exhaust gas of hot-blast stove pressurizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204608065U true CN204608065U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520199130.2U Expired - Fee Related CN204608065U (en) | 2015-04-03 | 2015-04-03 | A kind of exhaust gas of hot-blast stove pressurizing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204608065U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774606A (en) * | 2022-02-28 | 2022-07-22 | 鞍钢股份有限公司 | Blast furnace hot blast stove changing and pressure equalizing method |
| CN114959146A (en) * | 2022-07-13 | 2022-08-30 | 中冶京诚工程技术有限公司 | Hot-blast stove charging and discharging system and control method thereof |
| CN115029492A (en) * | 2022-07-13 | 2022-09-09 | 中冶京诚工程技术有限公司 | Hot-blast stove charging and discharging system and control method thereof |
-
2015
- 2015-04-03 CN CN201520199130.2U patent/CN204608065U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774606A (en) * | 2022-02-28 | 2022-07-22 | 鞍钢股份有限公司 | Blast furnace hot blast stove changing and pressure equalizing method |
| CN114959146A (en) * | 2022-07-13 | 2022-08-30 | 中冶京诚工程技术有限公司 | Hot-blast stove charging and discharging system and control method thereof |
| CN115029492A (en) * | 2022-07-13 | 2022-09-09 | 中冶京诚工程技术有限公司 | Hot-blast stove charging and discharging system and control method thereof |
| CN115029492B (en) * | 2022-07-13 | 2023-10-27 | 中冶京诚工程技术有限公司 | Hot-blast stove pressure charging and discharging system and control method thereof |
| CN114959146B (en) * | 2022-07-13 | 2023-11-10 | 中冶京诚工程技术有限公司 | Hot-blast stove pressure charging and discharging system and control method thereof |
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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: 20150902 Termination date: 20160403 |