CN206638045U - A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system - Google Patents
A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system Download PDFInfo
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- CN206638045U CN206638045U CN201720352836.7U CN201720352836U CN206638045U CN 206638045 U CN206638045 U CN 206638045U CN 201720352836 U CN201720352836 U CN 201720352836U CN 206638045 U CN206638045 U CN 206638045U
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- production line
- bellows
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses bellows, sintered production line rear portion bellows in the middle part of a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system, including sintering machine, central cooler, air blower, dust removing units, selective-catalytic-reduction denitrified unit, waste heat boiler, desulfurization unit, main exhauster, chimney, sintered production line front portion bellows, sintered production line；Three parts bellows are sequentially arranged in below sintering machine sintered production line by tandem and connected with sintering machine in the system；Bellows, air blower, central cooler, dust removing units, selective-catalytic-reduction denitrified unit, waste heat boiler, desulfurization unit, main exhauster, chimney are sequentially connected in the middle part of the sintered production line；Sintered production line front portion bellows are connected with desulfurization unit air inlet；Sintered production line rear portion bellows are connected with waste heat boiler air inlet.The utility model can not only reduce investment and the operating cost of sintering flue gas desulfurization denitration, while can reclaim the waste heat in sintering production process, have good economic benefit.
Description
Technical field
Metallurgical industry field is the utility model is related to, more particularly to a kind of sintering flue gas desulfurization denitration and waste heat recovery one
Change system.
Background technology
Substantial amounts of atmosphere pollution can be produced in steel art production process, sintering production is in modern steel production
One of most important technique unit, caused NO in its sintering processXDischarge capacity accounts for steel plant NOXThe 48% of total release, because
This sintering denitrating flue gas desulfurization has turned into the most important thing of iron and steel enterprise's environmental improvement.At present, external sintering denitrating flue gas skill
Mainly active charcoal (Jiao) absorption method, recirculating fluidized bed hair, high-energy radiation-chemical method, semi-dry spraying method and MWROS flue gases are net for art
Change technology.The investment of the above method and operating cost are very high.Generally using the highly developed choosing of technology in present coal-burning power plant
The catalytic-reduction denitrified technology of selecting property, i.e. SCR denitration technology, its initial outlay and operating cost are very low, but it requires reaction temperature
Spend for 260~400 DEG C, and the temperature for sintering flue gas it is relatively low (<200 DEG C), it is difficult to using this ripe SCR
(SCR) denitration technology.
Meanwhile Steel Industrial is second largest highly energy-consuming, the industry of high pollution for being only second to power industry, wherein sintering
Process energy consumption accounts for the 10%~20% of steel industry total energy consumption, and according to statistics, residual heat resources amount caused by production 1t sintering deposits is
1000~1300MJ/t, cooling sintering deposit and sintering flue gas are mostly come from, residual heat resources are enriched, but conventional sintering machine waste heat returns
Receipts system, only a small amount of residual heat resources are recycled utilization, and residual heat resources waste serious.
For the above situation, it is necessary to a kind of sintering flue gas desulfurization denitration and waste heat recovery integration system for sintering machine
System.
Utility model content
The technical problems to be solved in the utility model is：A kind of sintering flue gas desulfurization denitration and waste heat recovery integration is provided
System, the sintering flue gas containing nitrogen oxides can be heated using the sensible heat for cooling down sintering deposit using the utility model, to meet
Smoke reaction temperature requirement in SCR (SCR) denitration technology, but also reclaimed and sintering deposit is cooled down in central cooler
Caused sintering fume afterheat in sintering process in sensible heat and sintering machine, at the same also reduce sintering flue gas desulfurization denitration investment into
This, has good economic benefit and social benefit.
The technical scheme that the utility model solves technical problem is as follows：
A kind of sintering flue gas desulfurization denitration of the utility model and waste heat recovery integral system, the system include sintering machine,
Central cooler, air blower, dust removing units, selective-catalytic-reduction denitrified unit, waste heat boiler, desulfurization unit, main exhauster, cigarette
Chimney, sintered production line front portion bellows, sintered production line middle part bellows, sintered production line rear portion bellows；The sintering machine respectively with
Sintered production line front portion bellows below the sintered production line of sintering machine are sequentially arranged in by tandem, in the middle part of sintered production line
Bellows, sintered production line rear portion bellows are connected；Bellows in the middle part of the sintered production line, air blower, central cooler, dust removing units,
Selective-catalytic-reduction denitrified unit, waste heat boiler, desulfurization unit, main exhauster, chimney are sequentially connected by pipeline；The burning
The gas outlet of knot production line front portion bellows is connected with the desulfurization unit air inlet；The outlet of sintered production line rear portion bellows
Mouth is connected with the waste heat boiler air inlet.
Further, sintered production line front portion bellows account for the percentage of all bellows below the sintered production line of sintering machine
Than for 10%~20%.
Further, bellows account for hundred of all bellows below the sintered production line of sintering machine in the middle part of described sintered production line
Divide than being 50%~60%.
Further, described sintered production line rear portion bellows account for hundred of all bellows below the sintered production line of sintering machine
Divide than being 10%~30%.
Further, the dust removing units are electric cleaner.
Further, the cooling sintering deposit in the central cooler comes from sintering machine.
Compared with prior art, the utility model has advantages below：(1) utilize and cool down sintering mine sensible heat raising sintering cigarette
The temperature of gas, reach the reaction temperature of selective-catalytic-reduction denitrified unit (SCR) denitration；(2) cooling sintering will be absorbed
Sintering flue gas after ore deposit sensible heat is mixed with the high temperature sintering flue gas that sintered production line rear portion bellows are sent and residual heat boiler for exchanging heat, remaining
Steam caused by heat in heat boiler absorption flue gas is available for steam user to use, and such as generates electricity；(3) without extra consumption resource just
Sintering denitrating flue gas desulfurization can be completed, while also completes the recycling of residual heat resources；(4) selective-catalytic-reduction denitrified list
First (SCR) investment and operating cost are all very low, have very high economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
In figure：1. sintering machine, 2. central coolers, 3. air blowers, 4. dust removing units, 5. selective-catalytic-reduction denitrified units,
6. waste heat boiler, 7. desulfurization units, 8. main exhausters, 9. chimneys, 10. sintered production line front portion bellows, in 11. sintered production lines
Portion's bellows, 12. sintered production line rear portion bellows.
Embodiment
In order to preferably explain the utility model, it is new to further elucidate this practicality with specific embodiment below in conjunction with the accompanying drawings
The content of type, but content of the present utility model is not limited only to following examples.
As shown in figure 1, a kind of sintering flue gas desulfurization denitration of the utility model and waste heat recovery integral system, the system bag
Include sintering machine 1, central cooler 2, air blower 3, dust removing units 4, selective-catalytic-reduction denitrified unit 5, waste heat boiler 6, desulfurization list
Member 7, main exhauster 8, chimney 9, sintered production line front portion bellows 10, sintered production line middle part bellows 11, sintered production line rear portion
Bellows 12；Described sintering machine 1 bellows 11, sintering production with sintered production line front portion bellows 10, in the middle part of sintered production line respectively
Line rear portion bellows 12 are connected；In the middle part of sintered production line front portion bellows 10, sintered production line after bellows 11, sintered production line
Portion's bellows 12 are sequentially arranged in the lower section of the sintered production line of sintering machine 1 by tandem；Bellows in the middle part of the sintered production line
11 outlets are connected with the air inlet of air blower 3, and the gas outlet of air blower 3 is connected with the air inlet of central cooler 2, the ring
The gas outlet of cold 2 is connected with the air inlet of dust removing units 4, and the gas outlet of the dust removing units 4 and the selective catalysis are also
The former air inlet of denitration unit 5 connection, the selective-catalytic-reduction denitrified gas outlet of unit 5 and the air inlet of waste heat boiler 6
Connection, the gas outlet of the waste heat boiler 6 is connected with the air inlet of the desulfurization unit 7, the gas outlet of the desulfurization unit 7 and
The air inlet of main exhauster 8 connection, the gas outlet of main exhauster 8 is connected with the chimney 9；Before described sintered production line
The gas outlet of portion's bellows 10 is connected with the described air inlet of desulfurization unit 7；The gas outlet of sintered production line rear portion bellows 12 and institute
State the connection of the air inlet of waste heat boiler 6.All bellows below the whole piece sintered production line of sintering machine 1 are divided into three by the present embodiment
Part：Bellows 11, sintered production line rear portion bellows 12, the three parts in the middle part of sintered production line front portion bellows 10, sintered production line
Middle each section can be by being made up of multiple bellows.In normal sintering process production process, sintered production line front portion bellows
10 percentages for accounting for the whole all bellows in sintered production line bottom are 10%~20%, and its internal sintering flue-gas temperature is 50 DEG C
~100 DEG C, amount of nitrogen oxides is very low；Bellows 11 account for the whole all bellows in sintered production line bottom in the middle part of sintered production line
Percentage is 50%~60%, and its internal sintering flue-gas temperature is 50 DEG C~150 DEG C, and amount of nitrogen oxides is very high；Sintering life
The percentage that producing line rear portion bellows 12 account for the whole all bellows in sintered production line bottom is 10%~30%, sintering flue gas therein
Temperature is 300 DEG C~500 DEG C, and amount of nitrogen oxides is very low.In the present embodiment, the sintering cigarette in the middle part of sintered production line in bellows 11
Gas is introduced into the sensible heat absorbed in central cooler 2 in cooling sintering deposit by air blower 3, and cooling sintering deposit here comes from sintering
Machine 1, absorb the sintering flue-gas temperature after sensible heat and improve to 300 DEG C~450 DEG C, be then fed into the dedusting of dust removing units 4, removing here
Electric cleaner can be selected in dirt unit 4, to meet the needs of high temperature sintering flue gas ash removal so that high temperature sintering flue gas is kept away in denitration
Exempt to influence because flue dust is excessive or damage selective-catalytic-reduction denitrified unit 5, the sintering flue-gas temperature after dedusting can
To meet the requirement of selective-catalytic-reduction denitrified unit 5, sintering flue gas is sent into selective-catalytic-reduction denitrified unit 5 and passed through
Carry out denitration after, sintering flue-gas temperature be 300 DEG C~450 DEG C, now sinter flue gas again with sintered production line rear portion bellows 12
300 DEG C~500 DEG C sintering flue gases mixing after jointly enter waste heat boiler 6 in, waste heat boiler 6 absorb mixed sintering flue gas in
Heat simultaneously produces steam for steam user use, such as generates electricity, mixed sintering flue gas is down to by temperature after waste heat boiler 6
After 100 DEG C~200 DEG C, then with sintered production line front portion bellows 10 50 DEG C~100 DEG C of sintering flue gas mixing, mix again
Sintering flue gas afterwards is sent into desulfurization unit 7 and carries out desulfurization, is then sent into by main exhauster 8 in chimney 9, discharges and meet ring
The flue gas of guaranteed request.
The utility model is utilized in sintering process production process, cigarette in the bellows at whole piece sintered production line diverse location
The difference of gas amount of nitrogen oxides and temperature, while heat using the sensible heat for cooling down sintering deposit the sintering cigarette of nitrogen-containing oxide
Gas, to meet the requirement of SCR (SCR) technology flue gas intake air temperature；But also sintering deposit in central cooler is reclaimed and has shown
Caused sintering fume afterheat in sintering process in heat and sintering machine.Therefore, the utility model can not only reduce sintering flue gas
The cost of investment of desulphurization denitration, while the waste heat in sintering process production process can be reclaimed, it is a kind of sintering cigarette innovated very much
Desulfurization denitration and waste heat reclaiming process.
Claims (6)
1. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system, it is characterised in that：The system includes sintering machine
(1), central cooler (2), air blower (3), dust removing units (4), selective-catalytic-reduction denitrified unit (5), waste heat boiler (6), de-
Sulphur unit (7), main exhauster (8), chimney (9), sintered production line front portion bellows (10), bellows (11) in the middle part of sintered production line,
Sintered production line rear portion bellows (12)；The sintering machine (1) is respectively with being sequentially arranged in the sintering of sintering machine (1) by tandem
Bellows (11), sintered production line rear portion bellows in the middle part of sintered production line front portion bellows (10), sintered production line below production line
(12) it is connected；Bellows (11), air blower (3), central cooler (2), dust removing units (4), selectivity in the middle part of the sintered production line
Catalytic-reduction denitrified unit (5), waste heat boiler (6), desulfurization unit (7), main exhauster (8), chimney (9) are connected successively by pipeline
Connect；The gas outlet of sintered production line front portion bellows (10) is connected with the desulfurization unit (7) air inlet；The sintering production
The gas outlet of line rear portion bellows (12) is connected with the waste heat boiler (6) air inlet.
2. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system according to claim 1, it is characterised in that：Institute
State sintered production line front portion bellows (10) account for the percentage of all bellows below the sintered production line of sintering machine (1) for 10%~
20%.
3. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system according to claim 1, it is characterised in that：Institute
In the middle part of the sintered production line stated bellows (11) account for the percentage of all bellows below the sintered production line of sintering machine (1) for 50%~
60%.
4. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system according to claim 1, it is characterised in that：Institute
The sintered production line rear portion bellows (12) stated account for the percentage of all bellows below the sintered production line of sintering machine (1) for 10%~
30%.
5. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system according to claim 1, it is characterised in that：Institute
It is electric cleaner to state dust removing units (4).
6. a kind of sintering flue gas desulfurization denitration and waste heat recovery integral system according to claim 1, it is characterised in that：Institute
The cooling sintering deposit stated in central cooler (2) comes from sintering machine (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720352836.7U CN206638045U (en) | 2017-04-06 | 2017-04-06 | A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720352836.7U CN206638045U (en) | 2017-04-06 | 2017-04-06 | A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system |
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| CN206638045U true CN206638045U (en) | 2017-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839794A (en) * | 2017-04-06 | 2017-06-13 | 中冶华天南京工程技术有限公司 | A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system and implementation method |
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2017
- 2017-04-06 CN CN201720352836.7U patent/CN206638045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839794A (en) * | 2017-04-06 | 2017-06-13 | 中冶华天南京工程技术有限公司 | A kind of sintering flue gas desulfurization denitration and waste heat recovery integral system and implementation method |
| CN106839794B (en) * | 2017-04-06 | 2023-08-22 | 中冶华天南京工程技术有限公司 | Sintering flue gas desulfurization and denitrification and waste heat recovery integrated system and implementation method |
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