CN202141347U - Sintering waste heat utilization device - Google Patents
Sintering waste heat utilization device Download PDFInfo
- Publication number
- CN202141347U CN202141347U CN201120226572U CN201120226572U CN202141347U CN 202141347 U CN202141347 U CN 202141347U CN 201120226572 U CN201120226572 U CN 201120226572U CN 201120226572 U CN201120226572 U CN 201120226572U CN 202141347 U CN202141347 U CN 202141347U
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- CN
- China
- Prior art keywords
- gas
- sintering
- cooling device
- waste heat
- flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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 utility model discloses a sintering waste heat utilization device, which comprises a flue led out of a sintering ore cooling device, and is characterized in that the flue and a gas pipeline respectively enter a hearth of an additional combustion boiler with a heat exchanger, a gas burner is arranged in the hearth, air heated by the sintering ore cooling device is used for combusting with additional combustion gas, and then cooling water is heated to form steam. A flue gas exhaust pipeline of the additional combustion boiler is connected to the bottom of the sintering ore cooling device through a circulating fan, and partial or all flue gas circularly enters the sintering ore cooling device. In the sintering waste heat utilization device, the air heated by the sintering ore cooling device can be used for ensuring stable combustion of surplus gas, so that gas with low calorific value can be adopted. The utilization efficiency of sensible heat of sintering ores and the surplus gas is improved, and the quantity and parameters of generated steam can be increased.
Description
Technical field
The utility model belongs to sintering deposit cooling and retracting device.
Background technology
In the sintering process of Iron and Steel Production, the sintering deposit temperature is very high, generally is to utilize the chilled air cools sintering deposit, is heated in the time of the chilled air cools sintering deposit, and the air after the heating can discharge through chimney through the waste heat boiler cooling then.At present, the subject matter that adopts the sintering waste heat boiler to reclaim is that flue-gas temperature is very low, generally is lower than 450
oC, therefore recyclable heat is limited, and it is also lower to reclaim the steam parameter that obtains.Simultaneously, also have part coal gas more than needed in the iron and steel enterprise, mainly comprise low-calorie blast furnace gas, coal gas of converter etc.The amount of surplus gas fluctuates along with the condition of production.When surplus gas more after a little while, it is relatively poor to build independent gas boiler economy, and there are problems such as combustion instability, the thermal efficiency are not high in gas boiler because calorific value of gas is low.
The utility model content
The purpose of the utility model is to provide a kind of sintering waste heat use device
that can utilize surplus gas.
To achieve these goals, adopt following technical scheme:
A kind of sintering waste heat use device comprises the flue of drawing from the sintering deposit cooling device, it is characterized in that: said flue and gaspipe line get into respectively in the burner hearth of the additional combustion boiler with heat exchanger, are provided with gas burner in the burner hearth.
In order to utilize the heat of flue gas as much as possible; Simultaneously enough oxygen contents are arranged in the flue gas in order to guarantee; The fume emission pipeline of said additional combustion boiler is connected to the bottom of sintering deposit cooling device through circulating fan, and partly or entirely flue gas recirculation gets into the sintering deposit cooling device.
During the different section of cold flue gas through the sintering deposit cooling device, the heated temperature of air is also different, and in order further to improve the efficient of waste heat recovery, the temperature of the burner hearth of said additional combustion boiler after according to waste heat recovery is divided into different piece.
Said sintering deposit cooling device is central cooler or belt-cooling machine.
In the device of the utility model, because air is heated, can make the burning of low-heat value gas more stable, surplus gas can be the mixture of blast furnace gas or blast furnace gas and coal gas of converter.
The beneficial effect of the utility model is:
(1) this device can improve the utilization ratio of sintering deposit sensible heat and surplus gas; Calculating shows; Quantity of steam and the quality of utilizing this device to produce are higher than the heat sum that adopts sintered ring cold exhaust heat boiler and gas boiler to reclaim respectively, and construction investment also is lower than cold waste heat boiler of ring and gas boiler sum.
(2) this device utilize sintering deposit the sensible heat preheating air, can improve the stability of surplus gas, can use iron and steel enterprise's low-heat value gas such as blast furnace gas more than needed.
(3) this device can link to each other with the coal gas stocking system, regulates the amount that surplus gas burns according to the amount that sintering waste heat reclaims, thereby improves the stability that produces steam.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure, part 1 is the sintering deposit cooling device; Part 2 is a seal closure; Part 3 is second valve; Part 4 is first valve; Part 5 is first chimney; Part 6 is a gas burner; Part 7 is a gaspipe line; Part 8 is a heat exchanger; Part 9 is second chimney; Part 10 is the 3rd valve; Part 11 is the 4th valve; Part 12 is first blower fan; Part 13 is second blower fan.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
As shown in Figure 1, in the sintering deposit cooling device, utilize first blower fan 12 with circulating flue gas, utilize second blower fan 13 that cold air is blasted in the sintering deposit cooling device 1, wherein the sintering deposit cooling device is central cooler or belt-cooling machine.
Cold air is taken away the sensible heat of sintering deposit, is heated simultaneously.In the sintering deposit cooling procedure, air has only played the effect of cooling sintering deposit and transmission heat, and its oxygen content is constant.Heated air helps the steady combustion of low-heat value gas such as blast furnace gas, and heated air is introduced into flue under the effect of seal closure 2; Get into boiler furnace through the 3rd valve 3; In burner hearth, be provided with gas burner 6, the surplus gas of sending here through gaspipe line 7 produces the higher flue gas of temperature in the burner hearth internal combustion; Get into steam generator system then; Utilize heat exchanger 8 with fume afterheat transmission feedwater, produce the steam of high parameter, thereby improved the utilization ratio of sintering deposit waste heat and coal gas heat.Surplus gas can be the mixture of blast furnace gas or blast furnace gas and coal gas of converter.
In order to guarantee that enough oxygen contents are arranged in the flue gas; Simultaneously in order to utilize the heat of flue gas as much as possible; Can the partial fume that come out from heat exchanger 8 be sent into sintering deposit cooling device 1 again through the 3rd valve 10 and first blower fan 12, a part is discharged by second chimney 9 through the 4th valve 11.Simultaneously, fresh air is introduced into the sintering deposit cooling device through second blower fan 13, guarantees the oxygen content of the flue gas of entering additional combustion boiler; In the native system; First valve 4 is in when flat closes, when steam generator system overhauls, cooled air through first valve 4 from 5 dischargings of first chimney.
In this device, can guarantee the smooth combustion of surplus gas through the air of sintering deposit cooling device heating, improved the utilization ratio of sintering deposit sensible heat and surplus gas, can improve the amount and the parameter of generation steam.This device also is suitable for the processing of other similar waste heat recoveries, utilizes various concrete mode and the protection domain that compound mode all belongs to the utility model thereof of the principle design of the utility model.
Claims (4)
1. a sintering waste heat use device comprises the flue of drawing from the sintering deposit cooling device, it is characterized in that: said flue and gaspipe line get into respectively in the burner hearth of the additional combustion boiler with heat exchanger, are provided with gas burner in the burner hearth.
2. sintering waste heat use device as claimed in claim 1 is characterized in that: the fume emission pipeline of said additional combustion boiler is connected to the bottom of sintering deposit cooling device through circulating fan, and partly or entirely flue gas recirculation gets into the sintering deposit cooling device.
3. like claim 1 or 2 described sintering waste heat use devices, it is characterized in that: the temperature of the burner hearth of said additional combustion boiler after according to waste heat recovery is divided into different piece.
4. sintering waste heat use device as claimed in claim 1 is characterized in that: said sintering deposit cooling device is central cooler or belt-cooling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226572U CN202141347U (en) | 2011-06-30 | 2011-06-30 | Sintering waste heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226572U CN202141347U (en) | 2011-06-30 | 2011-06-30 | Sintering waste heat utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141347U true CN202141347U (en) | 2012-02-08 |
Family
ID=45552403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120226572U Expired - Fee Related CN202141347U (en) | 2011-06-30 | 2011-06-30 | Sintering waste heat utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075891A (en) * | 2013-01-30 | 2013-05-01 | 昆明钢铁集团有限责任公司 | Method and equipment for supporting boiler combustion by using sintering hot air |
-
2011
- 2011-06-30 CN CN201120226572U patent/CN202141347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075891A (en) * | 2013-01-30 | 2013-05-01 | 昆明钢铁集团有限责任公司 | Method and equipment for supporting boiler combustion by using sintering hot air |
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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: 20120208 Termination date: 20190630 |