CN214075943U - SNCR denitration spray gun device of adjustable spray angle - Google Patents
SNCR denitration spray gun device of adjustable spray angle Download PDFInfo
- Publication number
- CN214075943U CN214075943U CN202023126049.1U CN202023126049U CN214075943U CN 214075943 U CN214075943 U CN 214075943U CN 202023126049 U CN202023126049 U CN 202023126049U CN 214075943 U CN214075943 U CN 214075943U
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- Prior art keywords
- water
- cooling wall
- spray gun
- filling plate
- cooling
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- 239000007921 spray Substances 0.000 title claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 12
- 229910021529 ammonia Inorganic materials 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
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- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model provides an adjustable spray angle's SNCR denitration spray gun device welds water-cooling wall scale filling plate on the boiler water-cooling wall, water-cooling wall scale filling plate on be equipped with the trompil, water-cooling wall scale filling plate on arrange fixed guide box, semi-circular seal box, double fluid spray gun pass through fixing bolt and cell type clamp plate setting at boiler water-cooling lateral wall and hide scale between the water-cooling wall. The device has the advantages of reducing ammonia consumption, reducing operating cost, reducing the number of spray guns, and enabling debugging and operation maintenance to be simpler and easier.
Description
Technical Field
The utility model belongs to the technical field of the denitration is administered in environmental protection atmosphere pollution, a but adjusting spray angle's SNCR denitration spray gun device is related to, the utility model discloses the device mainly is applied to industrial boiler kiln flue gas SNCR denitration and administers, and the big SNCR denitration project of specially adapted flue gas temperature variation range.
Background
The denitration technology for environmental protection air pollution control comprises an SCR denitration technology, an SNCR denitration technology and the like, the SNCR denitration technology is suitable for fluidized bed boilers and cement kilns, the denitration efficiency is high, the SNCR denitration technology is also available for boilers such as pulverized coal furnaces, the denitration efficiency is low due to the influence of temperature field change.
The traditional SNCR method denitration technology, non-selective catalytic reduction technique adopts liquid ammonia, aqueous ammonia or urea solution as reducing agent, directly sprays into the furnace through the spray gun and reacts, and the regional optimum scope of temperature that its key spray gun sprays is in 850 ~ 1250 ℃ region, and denitration efficiency is the highest, generally confirms spray gun mounted position through the simulation of temperature field, adopts the layering to arrange more, and every layer comprises a plurality of spray guns, adopts the fixed mounting mode, and the fixed angle installation of spray gun has following shortcoming:
1) because the temperature field in the hearth changes along with the load and the operation mode of the boiler when the boiler operates, the spray guns are arranged in a multilayer mode on the elevation of the hearth to ensure that the expected denitration efficiency is achieved, the number of the spray guns is large, and debugging and operation maintenance are unchanged.
2) The reaction window temperature of the denitration reducing agent by the SNCR method is 850-1150 ℃, and the reducing agent is injected into a high-temperature area to carry out oxidation reaction to generate NOXAnd the reducing agent injected into the low-temperature area is not reacted thoroughly, so that the debugging difficulty is increased, and even the installation height of the spray gun needs to be changed to solve the problem of denitration efficiency.
3) The installation mode of the spray gun with a fixed angle leads to the increase of the control difficulty of ammonia nitrogen molar ratio, ammonia escape and the like due to poor adaptability to a boiler temperature field.
Disclosure of Invention
The utility model discloses to the shortcoming of fixed spray gun, provide an adjustable spray angle's SNCR denitration spray gun device.
The technical solution of the utility model is that: the utility model provides an adjustable spray angle's SNCR denitration spray gun device which characterized in that: weld water-cooling wall scale filling plate on the boiler water-cooling wall, water-cooling wall scale filling plate on be equipped with the trompil, water-cooling wall scale filling plate on arrange fixed guide rail box, semi-circular seal box, the double-fluid spray gun passes through fixing bolt and cell type clamp plate setting at boiler water-cooling lateral wall and avoids scale between the water-cooling wall.
Reducing agent is injected at a variable angle through the angle adjustment of a spray gun, so that the reducing agent is injected into an optimal reaction temperature zone; compare with traditional mounting means the utility model has the advantages of it is following:
1) the ammonia nitrogen molar ratio can be reduced under the condition of the same denitration efficiency, the ammonia consumption is reduced, and the operating cost is reduced.
2) The escape amount of ammonia is reduced, so that the reaction of the reducing agent is more thorough;
3) the device has the advantages that the angle is adjusted, the effect of the device is equivalent to that the spray gun is moved up and down, the number of layers of the spray gun can be reduced, the quantity of the spray guns is reduced, and debugging and operation maintenance are simpler and easier.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a partial schematic view of an embodiment of the present invention.
Fig. 3 is an I-direction view of fig. 1 according to an embodiment of the present invention.
In the figure: 1. the water wall scale filling plate comprises a water wall scale filling plate, 2, scale filling plate holes, 3, a double-fluid spray gun, 4, water wall scale, 5, a fixed guide rail box, 6, a semicircular sealing box, 7, a fixed bolt, 8 and a groove-shaped pressing plate.
Detailed Description
The embodiments are described in detail below with reference to the accompanying drawings.
An SNCR denitration spray gun device with adjustable spray angle is characterized in that the installation method of the spray gun device with the adjustable spray angle is similar to the installation method of a traditional fixed spray gun, namely, a water cooling wall of a boiler is processed by a lead pipe to avoid scales (4) between the water cooling walls, a water cooling wall scale filling plate 1 is welded on the water cooling wall of the boiler, a scale filling plate opening 2 is arranged on the water cooling wall scale filling plate 1, a fixed guide rail box 5 of the device is welded at the scale filling plate opening 2 on the water cooling wall scale filling plate 1, a fixed nut 7 on a groove-shaped pressure plate 8 is loosened during debugging, a double-fluid spray gun 3 and a semicircular sealing box rotate together to adjust the angle of the double-fluid spray gun 3, the best spray angle of the double-fluid spray gun 3 is determined through the denitration efficiency of a nitrogen oxide analyzer under the condition that the ammonia injection quantity and the atomization wind are not changed, and the fixed nuts 7 on the two groove-shaped pressure plates 8 are tightened, after the positioning, debugging and positioning of the double-fluid spray gun 3 are finished, the double-fluid spray gun 3 can rotate within a certain angle range (about +/-30 degrees). The function of the device is equivalent to moving the double-fluid spray gun 3 up and down in a certain range, and the spraying angle of the double-fluid spray gun 3 is adjusted on line according to the change of the load temperature field of the boiler, so that the reducing agent can be sprayed into a reaction area with the optimal temperature.
Claims (1)
1. The utility model provides an adjustable spray angle's SNCR denitration spray gun device which characterized in that: weld water-cooling wall scale filling plate (1) on the boiler water-cooling wall, water-cooling wall scale filling plate (1) on be equipped with trompil (2), water-cooling wall scale filling plate (1) on arrange fixed guide rail box (5), semi-circular seal box (6), two fluid spray gun (3) are through fixing bolt (7) and cell type clamp plate (8) setting at boiler water-cooling lateral wall and hide scale (4) between the water-cooling wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023126049.1U CN214075943U (en) | 2020-12-23 | 2020-12-23 | SNCR denitration spray gun device of adjustable spray angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023126049.1U CN214075943U (en) | 2020-12-23 | 2020-12-23 | SNCR denitration spray gun device of adjustable spray angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214075943U true CN214075943U (en) | 2021-08-31 |
Family
ID=77431505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023126049.1U Active CN214075943U (en) | 2020-12-23 | 2020-12-23 | SNCR denitration spray gun device of adjustable spray angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214075943U (en) |
-
2020
- 2020-12-23 CN CN202023126049.1U patent/CN214075943U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A SNCR denitration spray gun device with adjustable spray angle Effective date of registration: 20221212 Granted publication date: 20210831 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2022980026415 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20240103 Granted publication date: 20210831 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2022980026415 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A SNCR denitrification spray gun device with adjustable spray angle Granted publication date: 20210831 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2024980001872 |