CN205730894U - A kind of low-temperature denitration wet method sulphur removing and dust removing also ensures the system that chimney is hot standby - Google Patents
A kind of low-temperature denitration wet method sulphur removing and dust removing also ensures the system that chimney is hot standby Download PDFInfo
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- CN205730894U CN205730894U CN201620753101.0U CN201620753101U CN205730894U CN 205730894 U CN205730894 U CN 205730894U CN 201620753101 U CN201620753101 U CN 201620753101U CN 205730894 U CN205730894 U CN 205730894U
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- chimney
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- hot standby
- desulfurizing tower
- flue gas
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a kind of low-temperature denitration wet method sulphur removing and dust removing and ensure the system that chimney is hot standby: denitration reactor inlet end is provided with ammonia-spraying grid；The Benitration reactor port of export is sequentially communicated by the road to flue gas heat-exchange unit, desulfurizing tower；It is provided with blower fan in the pipeline of described desulfurizing tower arrival end；Desulfurizing tower is provided with wet dust removal.Described Benitration reactor is single storehouse or many bins structure, and bin is equipped with denitrating catalyst；Using selective catalytic reduction denitration, described denitrating catalyst is low temperature or the honeycomb fashion of middle high temperature, board-like or corrugated structure.NO in flue gas can be realized by this systemX、SO2And the efficient removal of particulate matter, and recovered flue gas heat energy produces steam solve the hot standby problem of chimney.
Description
Technical field:
This utility model relates to a kind of low-temperature denitration wet method sulphur removing and dust removing and ensures the system that chimney is hot standby.
Background technology:
Recently as the industrialized development of China, being continuously increased of the Industrial Stoves such as coal-burning boiler, coke oven, cause environment
Pollution problem is increasingly serious.For strengthening environmental protection work, country has put into effect a series of policies and measures, discharge standard to limit
NOX、SO2And the discharge of particulate matter, in " coking chemistry emission of industrial pollutants standard " GB16171-2012 of coking industry especially
Limit value area: NOXConcentration of emission≤150mg/m3、SO2Concentration of emission≤30mg/m3, granular material discharged concentration≤15mg/m3。
The most also there is no non-secondary pollution, the investment operating cost hot standby problem of solution chimney relatively low, effective and skill
The mature and stable dust-removal and desulfurizing denitrification integral system that art is reliably advanced.
Summary of the invention:
For overcoming the defect of prior art, the purpose of this utility model is to provide a kind of low-temperature denitration wet method sulphur removing and dust removing
And ensure the system that chimney is hot standby, NO in flue gas can be realized by this systemX、SO2And the efficient removal of particulate matter, and reclaim cigarette
Gas heat energy produces steam and solves the hot standby problem of chimney.
This utility model solves technical problem and adopts the following technical scheme that
A kind of low-temperature denitration wet method sulphur removing and dust removing also ensures the system that chimney is hot standby:
Denitration reactor inlet end is provided with ammonia-spraying grid；The Benitration reactor port of export is sequentially communicated by the road to flue gas heat exchange
Device, desulfurizing tower；
It is provided with blower fan in the pipeline of described desulfurizing tower arrival end；Desulfurizing tower is provided with wet dust removal.
Described Benitration reactor is single storehouse or many bins structure, and bin is equipped with denitrating catalyst；Use selective catalysis also
Former method denitration, described denitrating catalyst is low temperature or the honeycomb fashion of middle high temperature, board-like or corrugated structure.
The wet desulphurization of described desulfurizing tower uses limestone-gypsum method, Dual alkali, magnesium oxide method or ammonia process of desulfurization mode.
Being provided with air heat exchanger in the front or behind pipeline of described flue gas heat-exchange unit, described air heat exchanger is independent
System is not run with smoke contacts, and its thermal source uses fume afterheat or steam, and the air after heating is inhaled by former chimney hot drawing power
Enter former chimney or use blower fan to send into former chimney, described former chimney and non-purified fume emission chimney.
Described denitration reactor inlet end is provided with flue gas heating system, and heating fuel uses oil, electricity or gas.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
Native system use first low-temperature denitration after Mist heat recovering lowering the temperature, then lead to after wet method sulphur removing and dust removing purifies up to standard directly
Row, is heated to a certain amount of outside air preference temperature simultaneously and sends into the technique road of original chimney guarantee hot operation of chimney
Line.
Atmosphere temperature rising, the air after intensification are entered original chimney and solve the hot standby problem of coke oven chimney by air heat exchanger,
Flue gas after denitration produces steam by flue gas heat-exchange unit recovery section heat, it is to avoid energy waste, drops flue gas simultaneously
Temperature is with applicable wet desulphurization temperature requirements.Sulfur method variation selects, and the built-in wet dust removal of desulfurizing tower reduces floor space
With investment cost.
Native system can realize NO in flue gasX、SO2And the efficient removal of particulate matter, and recovered flue gas heat energy produce steam and
Solve the hot standby problem of chimney.
Accompanying drawing illustrates:
Fig. 1 is system principle of compositionality figure of the present utility model.
Label in figure: 1 ammonia-spraying grid, 2 Benitration reactors, 3 denitrating catalysts, 4 flue gas heat-exchange units, 5 air heat exchangers, 6
Blower fan, 7 desulfurizing towers, 8 wet dust removals.
Below by way of detailed description of the invention, and the utility model is described in further detail to combine accompanying drawing.
Detailed description of the invention:
Embodiment: see accompanying drawing, is provided with ammonia-spraying grid 1 at Benitration reactor 2 arrival end；Benitration reactor 2 port of export warp
Pipeline is sequentially communicated to flue gas heat-exchange unit 4, desulfurizing tower 7；It is provided with air heat-exchange in the front or behind pipeline of flue gas heat-exchange unit 4
Device 5, this air heat exchanger is that autonomous system is not run with smoke contacts, and its thermal source uses pipeline fume afterheat or steam, heating
After air by former chimney hot drawing power suck former chimney or use blower fan send into former chimney, aforementioned former chimney and non-purified cigarette
Gas blowdown stack.
Blower fan 6 it is provided with in the pipeline of desulfurizing tower 7 arrival end；Desulfurizing tower 7 is provided with wet dust removal 8.
In specifically arranging, Benitration reactor 2 is single storehouse or many bins structure, and bin is equipped with denitrating catalyst 3；Use and select
Property catalytic reduction method denitration, denitrating catalyst 3 is low temperature or the honeycomb fashion of middle high temperature, board-like or corrugated structure.
The wet desulphurization of desulfurizing tower 7 uses limestone-gypsum method, Dual alkali, magnesium oxide method or ammonia process of desulfurization mode.
Benitration reactor 2 arrival end is provided with flue gas heating system, and heating fuel uses oil, electricity or gas.
In work, the ammonia that the flue gas of the Industrial Stoves such as coal-burning boiler, coke oven discharge sprays with ammonia-spraying grid 1 mixes laggard
Entering Benitration reactor 2, after denitration, flue gas is blasted desulfurizing tower 7, desulfurizing tower by blower fan 6 malleation after flue gas heat-exchange unit 4 heat exchange is lowered the temperature
In be provided with wet dust removal 8, the chimney that after purification, flue gas is arranged by tower top is up to standard in line.
Operation principle and work process are as described below:
The ammonia that non-purified flue gas sprays with ammonia-spraying grid 1 enters Benitration reactor 2, with Benitration reactor 2 after mixing
Denitrating catalyst 3 haptoreaction of interior filling completes NOXRemoving and control the escaping of ammonia, main chemical reactions during denitration:
NO reduction reaction: 4NO+4NH3+O2=4N2+6H2O (dominant response)
NO2Reduction reaction: 2NO2+4NH3+O2=3N2+6H2O
The heat energy that flue gas after denitration reclaims after entering flue gas heat-exchange unit 4 heat exchange is used for producing steam, cigarette after heat exchange cooling
Gas is blasted desulfurizing tower 7 by blower fan 6 malleation and carries out desulfurization, and desulfurization can use limestone-gypsum method, Dual alkali, magnesium oxide method and ammonia
The wet desulfurizing process such as method.The wet dust removal 8 that flue gas after desulfurization is arranged in desulfurizing tower 7 carries out dedusting, after purification flue gas by
The chimney that desulfurizing tower 7 top is arranged is in line.
The air heat exchanger 5 being provided with enters former chimney after being heated by cold air, it is ensured that the hot operation of former chimney.
Heating system can be arranged flue-gas temperature raised when Benitration reactor 2 entrance flue gas temperature is less than about 270 DEG C
To more than 270 DEG C, heating fuel can use oil, electricity, gas etc..
The foregoing is only preferred embodiment of the present utility model, not novel in order to limit, all in this most novel essence
The amendment made within god and principle, equivalent and improvement etc., all should be within the protection domain that this is novel.
Claims (5)
1. a low-temperature denitration wet method sulphur removing and dust removing ensure the system that chimney is hot standby, it is characterised in that
Benitration reactor (2) arrival end is provided with ammonia-spraying grid (1)；Benitration reactor (2) port of export is sequentially communicated by the road to cigarette
Gas heat exchanger (4), desulfurizing tower (7)；
Blower fan (6) it is provided with in the pipeline of described desulfurizing tower (7) arrival end；Desulfurizing tower (7) is provided with wet dust removal (8).
A kind of low-temperature denitration wet method sulphur removing and dust removing the most according to claim 1 also ensures the system that chimney is hot standby, its feature
Being, described Benitration reactor (2) is single storehouse or many bins structure, and bin is equipped with denitrating catalyst (3)；Use selective catalysis
Reducing process denitration, described denitrating catalyst (3) is low temperature or the honeycomb fashion of middle high temperature, board-like or corrugated structure.
A kind of low-temperature denitration wet method sulphur removing and dust removing the most according to claim 1 also ensures the system that chimney is hot standby, its feature
Being, the wet desulphurization of described desulfurizing tower (7) uses limestone-gypsum method, Dual alkali, magnesium oxide method or ammonia process of desulfurization mode.
A kind of low-temperature denitration wet method sulphur removing and dust removing the most according to claim 1 also ensures the system that chimney is hot standby, its feature
Being, being provided with air heat exchanger (5) in the front or behind pipeline of described flue gas heat-exchange unit (4), described air heat exchanger is
Autonomous system is not run with smoke contacts, and its thermal source uses fume afterheat or steam, and the air after heating is by former chimney hot drawing
Power sucks former chimney or uses blower fan to send into former chimney, described former chimney and non-purified fume emission chimney.
A kind of low-temperature denitration wet method sulphur removing and dust removing the most according to claim 1 also ensures the system that chimney is hot standby, its feature
Being, described Benitration reactor (2) arrival end is provided with flue gas heating system, and heating fuel uses oil, electricity or gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620753101.0U CN205730894U (en) | 2016-07-15 | 2016-07-15 | A kind of low-temperature denitration wet method sulphur removing and dust removing also ensures the system that chimney is hot standby |
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| CN201620753101.0U CN205730894U (en) | 2016-07-15 | 2016-07-15 | A kind of low-temperature denitration wet method sulphur removing and dust removing also ensures the system that chimney is hot standby |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176221A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Sintering flue gas heating denitration device and sintering flue gas heating method of denitration |
| CN109185907A (en) * | 2018-08-15 | 2019-01-11 | 华电电力科学研究院有限公司 | A kind of power station with smoke aerosol plume cancellation element and system and working method |
-
2016
- 2016-07-15 CN CN201620753101.0U patent/CN205730894U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176221A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Sintering flue gas heating denitration device and sintering flue gas heating method of denitration |
| CN108176221B (en) * | 2017-12-28 | 2024-04-09 | 中冶南方都市环保工程技术股份有限公司 | Sintering flue gas temperature rising denitration device and sintering flue gas temperature rising denitration method |
| CN109185907A (en) * | 2018-08-15 | 2019-01-11 | 华电电力科学研究院有限公司 | A kind of power station with smoke aerosol plume cancellation element and system and working method |
| CN109185907B (en) * | 2018-08-15 | 2023-10-20 | 华电电力科学研究院有限公司 | Device and system for eliminating smoke plume of power station and working method |
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Address after: 238100 Anhui city of Ma'anshan province Hanshan County Qingxi Town Industrial Park Patentee after: Tongxing environmental Polytron Technologies Inc Address before: 238100 Anhui city of Ma'anshan province Hanshan County Qingxi Town Industrial Park Patentee before: Anhui Tongxing Environmental Protection Engineering Co.,Ltd. |