CN102671539A - Volute type ammonia-spraying grid - Google Patents
Volute type ammonia-spraying grid Download PDFInfo
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- CN102671539A CN102671539A CN2011100589845A CN201110058984A CN102671539A CN 102671539 A CN102671539 A CN 102671539A CN 2011100589845 A CN2011100589845 A CN 2011100589845A CN 201110058984 A CN201110058984 A CN 201110058984A CN 102671539 A CN102671539 A CN 102671539A
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- ammonia
- spraying grid
- disturbing
- flow
- bluff body
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Abstract
The invention relates to a volute type ammonia-spraying grid which is used for removing oxynitride in smoke of boilers, industrial kilns and the like. The grid comprises a plurality of turbulence bluff bodies (1) and a plurality of spray pipes (3) which are integrally arranged, spray ports (2) of the spray pipes are arranged behind the turbulence bluff bodies (1) along the smoke flowing direction, and the direction of the spray ports (2) of the spray pipes is identical to the smoke flowing direction. The plurality of turbulence bluff bodies (1) and the plurality of spray pipes (3) are arranged on the same cross section of the ammonia-spraying grid, each of turbulence bluff bodies (1) corresponds to each of spray ports (2), and the turbulence bluff bodies (1) and the smoke flowing direction form an included angle of 45-85 degrees when the turbulence bluff bodies (1) are installed. The volute type ammonia-spraying grid has the advantages of being simple in adjustment, low in cost and good in mixing effect on large smoke flues.
Description
Technical field
The present invention relates to the ammonia-gas spraying device of a kind of selective catalytic reduction (SCR) denitration device, be used for removing the nitrogen oxide of flue gases such as boiler and Industrial Stoves.Belong to field of environment protection.
Background technology
At present, boiler and Industrial Stoves denitrating flue gas adopt SNCR method (SNCR) and selective catalytic reduction (SCR).The selective catalytic reduction denitration efficiency is high, and in the ammonia-gas spraying device of selective catalytic reduction, ammonia mixes the equipment of using with flue gas have nozzle ammonia-spraying grid and dalta wing.Two kinds of methods all have its characteristics and deficiency.The nozzle ammonia-spraying grid is regulated complicated, and under laminar condition, mixed effect is not good; The dalta wing cost is higher, and not enough to the large flue mixed effect.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of ammonia-spraying grid to regulate simple, lower-cost and good vortex ammonia-spraying grid the large flue mixed effect.
The objective of the invention is to realize like this: a kind of vortex ammonia-spraying grid; Comprise flow-disturbing bluff body and jet pipe, disorderly stream bluff body with the jet pipe integrated setting, press flue gas flow direction; After the spout of jet pipe was arranged on the flow-disturbing bluff body, the direction of the spout of jet pipe was consistent with flue gas flow direction; Stream bluff body and jet pipe are provided with a plurality of, and a plurality of flow-disturbing bluff bodies and a plurality of jet pipe are arranged on the same cross section of ammonia-spraying grid, the corresponding spout of flow-disturbing bluff body, during the installation of flow-disturbing bluff body and flue gas flow direction be 45 ° ~ 85 ° angle.
The flue gas vortex ammonia-spraying grid device of flowing through forms vortex behind the flow-disturbing bluff body, mixed with flue gas by the ammonia of spout ejection, in the time of extremely lacking, reaches the purpose of ammonia and flue gas mixing.
The vortex ammonia-spraying grid all has good mixing effect to laminar flow and turbulent two states, large flue, bottom flue, and simple adjustment is convenient, even need not to regulate.
The invention has the beneficial effects as follows:
Regulate simple, lower-cost and good to the large flue mixed effect.
Description of drawings
Fig. 1 is the plane of vortex ammonia-spraying grid of the present invention.
Fig. 2 is the installation diagram of vortex ammonia-spraying grid of the present invention.
Reference numeral among the figure:
Flow-disturbing bluff body 1, spout 2, jet pipe 3.
The specific embodiment
Referring to Fig. 1 ~ 2, Fig. 1 is the plane of vortex ammonia-spraying grid of the present invention.Fig. 2 is the installation diagram of vortex ammonia-spraying grid of the present invention.Can find out that by Fig. 1 ~ 2 vortex ammonia-spraying grid of the present invention comprises flow-disturbing bluff body 1 and jet pipe 3; Disorderly stream bluff body 1 with jet pipe 3 integrated setting; Press flue gas flow direction, after the spout 2 of jet pipe was arranged on flow-disturbing bluff body 1, the direction of the spout 2 of jet pipe was consistent with flue gas flow direction.Stream bluff body 1 and jet pipe 3 are provided with a plurality of, and a plurality of flow-disturbing bluff bodies 1 are arranged on the same cross section of ammonia-spraying grid with a plurality of jet pipes 3, flow-disturbing bluff body 1 a corresponding spout 2.Coefficient result is ammonia and the flue gas height mixing that sprays into.
Said flow-disturbing bluff body 1 is rounded or oval, during installation and flue gas flow direction be 45 ° ~ 85 ° angle.
In mixing flue, put into the integral type vortex ammonia-spraying grid that a plurality of flow-disturbing pieces and jet pipe are formed,, reach the effect of ammonia and flue gas high mixed through the vortex air-flow that a plurality of flow-disturbing pieces produce.In less than 1 second time, the ammonia and the flue gas that spray into mix, and on the preceding 1 meter cross section of catalyst layer, the concentration inequality is not more than 5%.
Claims (2)
1. vortex ammonia-spraying grid; It is characterized in that: said grid comprises flow-disturbing bluff body (1) and jet pipe (3); Disorderly stream bluff body (1) with and jet pipe (3) integrated setting; Press flue gas flow direction, after the spout of jet pipe (2) was arranged on flow-disturbing bluff body (1), the direction of the spout of jet pipe (2) was consistent with flue gas flow direction; Stream bluff body (1) and jet pipe (3) are provided with a plurality of; A plurality of flow-disturbing bluff bodies (1) and a plurality of jet pipe (3) are arranged on the same cross section of ammonia-spraying grid; The corresponding spout (2) of a flow-disturbing bluff body (1), when flow-disturbing bluff body (1) is installed and flue gas flow direction be 45 ° ~ 85 ° angle.
2. a kind of vortex ammonia-spraying grid according to claim 1 is characterized in that: said flow-disturbing bluff body (1) is rounded or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100589845A CN102671539A (en) | 2011-03-12 | 2011-03-12 | Volute type ammonia-spraying grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100589845A CN102671539A (en) | 2011-03-12 | 2011-03-12 | Volute type ammonia-spraying grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102671539A true CN102671539A (en) | 2012-09-19 |
Family
ID=46804484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100589845A Pending CN102671539A (en) | 2011-03-12 | 2011-03-12 | Volute type ammonia-spraying grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102671539A (en) |
-
2011
- 2011-03-12 CN CN2011100589845A patent/CN102671539A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120919 |