CN206064132U - A kind of denitration spray gun arrangement system for CFBB - Google Patents
A kind of denitration spray gun arrangement system for CFBB Download PDFInfo
- Publication number
- CN206064132U CN206064132U CN201621057923.1U CN201621057923U CN206064132U CN 206064132 U CN206064132 U CN 206064132U CN 201621057923 U CN201621057923 U CN 201621057923U CN 206064132 U CN206064132 U CN 206064132U
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- CN
- China
- Prior art keywords
- denitration spray
- spray gun
- denitration
- rear wall
- front wall
- 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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- 239000007921 spray Substances 0.000 title claims abstract description 71
- 238000000889 atomisation Methods 0.000 claims abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003546 flue gas Substances 0.000 abstract description 12
- 230000000630 rising effect Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 235000013877 carbamide Nutrition 0.000 description 6
- 239000004202 carbamide Substances 0.000 description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004372 laser cladding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model discloses a kind of denitration spray gun arrangement system for CFBB, it includes boiler furnace, horizontal flue, denitration spray gun, curtain wall, rear wall, front wall, arc atomization air flow, it is characterized in that：Front wall and rear wall paper in the middle part of the boiler furnace puts multiple inclined denitration spray guns.Multiple denitration spray guns that front wall and rear wall paper are put are all in same level.Multiple denitration spray guns that front wall and rear wall paper are put are formed and are liquidated, the control of two for liquidating denitration spray gun centrage.Each denitration spray gun is downward-sloping, and denitration spray gun is not more than 30 ° with the angle of horizontal plane.The air-flow of denitration spray gun outlet forms arc atomization air flow in the presence of rising flue gas in stove.Multiple denitration spray guns that front wall and rear wall paper are put are formed and are liquidated, and the arc atomization air flow of the denitration spray gun that each two liquidates forms a W atomization air flow.Inclined denitration spray gun puts in 150mm in burner hearth.Multiple denitration spray guns that front wall and rear wall paper are put will avoid curtain wall.
Description
Technical field
This utility model is related to CFBB, sprays more particularly, to a kind of denitration for CFBB
Rifle arrangement system.
Background technology
China has been to use the most country of CFBB (CFB boiler) in power plant in the world at present, has been transported
Capable large and small cycles fluid bed station boiler has 3000 multiple stage, and the large-size circulating fluidized bed station boilers of wherein more than 410t/h have
300 multiple stage, the large-size circulating fluidized bed station boilers of more than 1025t/h have 100 multiple stage (also 100 multiple stage are built).
The for example same cuboid of circulating fluidized bed boiler of power station burner hearth, four sides furnace wall is by water-cooling wall bank of tubes and band steel welding
Into, " water-cooling wall " just becomes the synonym of " furnace wall ", the height of burner hearth have 25 meters -49 meters not etc. broken boiler it is of different sizes and not
Together.Furnace outlet horizontal flue is arranged on roof of the furnace, and the height of the horizontal cigarette of furnace outlet has several meters high.
The method of denitration abbreviation SNCR of ammonia or carbamide is sprayed toward inner flue gas of the stove using spray gun, denitration efficiency can reach 60＆-
80%, this method requires flue-gas temperature at 1100 DEG C -850 DEG C.
Multiple denitration spray guns of existing circulating fluidized bed boiler of power station are all disposed within furnace outlet horizontal flue.
Denitration spray gun is arranged on furnace outlet horizontal flue, the drawbacks of have larger, the denitration of spray ammonia or carbamide in stove
Method requires flue-gas temperature at 1100 DEG C -850 DEG C, existing CFBB furnace outlet water when load is low in operation
The flue-gas temperature of flat flue causes less than 850 DEG C that denitration efficiency is very low or even denitrating flue gas are not up to standard.
Must be out of service by existing air environmental protection policy boiler smoke emission nitre boiler not up to standard.
Thus, it is necessary to raising denitration efficiency is improved in the denitration spray gun arrangement of CFBB, significantly
Degree reduces the nitre in the flue gas of boiler emission, designs and carry out a kind of denitration spray gun arrangement system of CFBB.
Improve denitration efficiency method be that denitration spray gun is arranged in the middle part of boiler furnace, in the middle part of boiler furnace the temperature of flue gas 980 DEG C-
850 DEG C, meet the method for denitration requirement of spray ammonia or carbamide in stove, the height in the middle part of burner hearth to furnace outlet there are 15 meters to cause spray
Enter the ammonia or carbamide in stove by sufficient reaction compartment and response time.
The content of the invention
This utility model purpose is to provide a kind of denitration spray gun arrangement system for CFBB.
For achieving the above object, this utility model takes following technical proposals：
1st, a kind of denitration spray gun arrangement system for CFBB, it includes boiler furnace, horizontal flue, takes off
Nitre spray gun, curtain wall, rear wall, front wall, arc atomization air flow, is characterized in that：Front wall and rear wall in the middle part of the boiler furnace
Arrange multiple inclined denitration spray guns.
2nd, multiple denitration spray guns that front wall and rear wall paper are put are all in same level.
3rd, multiple denitration spray guns that front wall and rear wall paper are put are formed and are liquidated, the control of two for liquidating denitration spray gun centrage.
4th, each denitration spray gun is downward-sloping, and denitration spray gun is not more than 30 ° with the angle of horizontal plane.
5th, the air-flow of denitration spray gun outlet forms arc atomization air flow in the presence of rising flue gas in stove.
6th, multiple denitration spray guns that front wall and rear wall paper are put are formed and are liquidated, the arc atomization of the denitration spray gun that each two liquidates
Air-flow forms a W atomization air flow.
7th, inclined denitration spray gun puts in 150mm in burner hearth.
8th, 150mm sections in denitration spray gun front portion are thick using laser cladding high abrasion resisting material 0.5mm, and denitration spray gun is adopted
Cr25Ni20 heat-resistant antifriction steel makings.
9th, multiple denitration spray guns that the front wall and rear wall paper in the middle part of the boiler furnace is put will avoid curtain wall.
The excellent feature of technology of the present utility model is：
The denitration spray gun method for arranging of the denitration in the stove efficiency for improving CFBB is have found, boiler load is solved
When low, the low flue gas nitre concentration of emission of the low denitration efficiency of horizontal flue flue-gas temperature is extremely difficult to the problem of national environmental standard requirement.
This utility model arranges denitration spray gun in the middle part of boiler furnace, in the middle part of boiler furnace the temperature of flue gas 980 DEG C-
850 DEG C, meet the method for denitration requirement of spray ammonia or carbamide in stove, the height in the middle part of burner hearth to furnace outlet there are 15 meters to cause spray
Enter the ammonia or carbamide in stove by sufficient reaction compartment and response time.
Description of the drawings
Fig. 1 follows ring fluidized-bed combustion boiler Give horizontal flues denitration spray gun arrangement schematic diagram for existing.
This utility model CFBB denitration spray gun arrangement system schematic diagram that Fig. 2 is.
This utility model CFBB denitration spray gun arrangement system A direction views that Fig. 3 is.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of denitration spray gun cloth for CFBB described in the utility model
System is put, it includes boiler furnace 1, horizontal flue 2, denitration spray gun 3, curtain wall 4, rear wall 5, front wall 6, arc atomization gas
Stream 7.
The multiple denitration spray guns 3 arranged in front wall 6 and rear wall 5 are all in same level.
The multiple denitration spray guns 3 arranged in front wall 6 and rear wall 5 are formed and are liquidated, two for liquidating denitration spray gun centrage pair
According to.
Each denitration spray gun 3 is downward-sloping, and each denitration spray gun 3 is not more than 30 ° with the angle of horizontal plane.
Inclined denitration spray gun 3 puts in 150mm in burner hearth 1.
3 front portion 150mm sections of denitration spray gun are thick using laser cladding high abrasion resisting material 0.5mm, and denitration spray gun 3 is adopted
Cr25Ni20 heat-resistant antifriction steel makings.
Multiple denitration spray guns 3 of front wall 6 and rear wall 5 arrangement in the middle part of the boiler furnace 1 will avoid curtain wall 4.
The various embodiments described above can some changes in addition under without departing from scope of the present utility model, therefore the explanation of the above is wrapped
Containing and accompanying drawing shown in structure should be regarded as exemplary, and be not used to limit claim of the present utility model.
Claims (4)
1. a kind of denitration spray gun arrangement system for CFBB, it include boiler furnace (1), horizontal flue (2),
Denitration spray gun (3), curtain wall (4), rear wall (5), front wall (6), arc atomization air flow (7), is characterized in that：In boiler furnace
(1) front wall (6) and rear wall (5) in the middle part of arranges multiple inclined denitration spray guns (3).
2. a kind of denitration spray gun arrangement system for CFBB according to claim 1, is characterized in that,
Multiple denitration spray guns (3) that front wall (6) and rear wall (5) are arranged are all in same level.
3. a kind of denitration spray gun arrangement system for CFBB according to claim 1, is characterized in that,
Multiple denitration spray guns (3) that front wall (6) and rear wall (5) are arranged are formed and are liquidated, two for liquidating denitration spray gun (3) centrage pair
According to the arc atomization air flow (7) of the denitration spray gun (3) that each two liquidates forms a W atomization air flow.
4. a kind of denitration spray gun arrangement system for CFBB according to claim 1, is characterized in that, often
Individual denitration spray gun (3) is not more than 30 ° with the angle of horizontal plane, and inclined denitration spray gun (3) puts in the interior 150mm of burner hearth (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057923.1U CN206064132U (en) | 2016-09-18 | 2016-09-18 | A kind of denitration spray gun arrangement system for CFBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057923.1U CN206064132U (en) | 2016-09-18 | 2016-09-18 | A kind of denitration spray gun arrangement system for CFBB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206064132U true CN206064132U (en) | 2017-04-05 |
Family
ID=58438084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057923.1U Expired - Fee Related CN206064132U (en) | 2016-09-18 | 2016-09-18 | A kind of denitration spray gun arrangement system for CFBB |
Country Status (1)
| Country | Link |
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| CN (1) | CN206064132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990266A (en) * | 2017-12-29 | 2019-07-09 | 马成果 | A kind of high temperature denitration, fly-ash reburning, boiler having dust removed inside |
-
2016
- 2016-09-18 CN CN201621057923.1U patent/CN206064132U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990266A (en) * | 2017-12-29 | 2019-07-09 | 马成果 | A kind of high temperature denitration, fly-ash reburning, boiler having dust removed inside |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 |
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| CF01 | Termination of patent right due to non-payment of annual fee |