CN101856598A - Smoke gas mixing element and smoke gas denitration system - Google Patents
Smoke gas mixing element and smoke gas denitration system Download PDFInfo
- Publication number
- CN101856598A CN101856598A CN201010186256.8A CN201010186256A CN101856598A CN 101856598 A CN101856598 A CN 101856598A CN 201010186256 A CN201010186256 A CN 201010186256A CN 101856598 A CN101856598 A CN 101856598A
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- mixing element
- flue gas
- smoke gas
- gas mixing
- denitration system
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Abstract
The invention provides a smoke gas mixing element in a smoke gas denitration system with better dispersing effect. The back flow surface of the mixing element is a convex surface. The invention also provides the smoke gas denitration system using the smoke gas mixing element. The mixing element is arranged in a pipeline of a smoke gas and reducing gas mixing part of the smoke gas denitration system, the mixing element is arranged in the pipeline in an inclined way, the back flow surface of the mixing element is the convex surface and is opposite to a spraying opening of a reducing agent spraying pipe, and a flow facing surface of the mixing element is opposite to the flowing direction of the smoke gas. Thereby, when reducing agents are sprayed to the back flow surface of the mixing element, divergent reflecting airflows can be formed. When the smoke gas impacts the flow facing surface in a plane shape, a large number of eddies can be generated, and the invention is more favorable for mixing.
Description
Technical field
The present invention relates to the flue gases purification field, be specifically related to flue gas mixing arrangement and a kind of flue gas denitrification system in a kind of flue gas denitrification system.
Background technology
Nitrogen oxide receives increasing concern as one of main atmosphere pollution, and nitrogen oxide will become the another major fields of country's pollution control after desulfurization.The SCR gas denitrifying technology is one of gas denitrifying technology that is most widely used at present, has advantages such as denitration efficiency height, selectivity are good, stable and reliable operation.The key of SCR technology, the one, catalyst; The 2nd, whether uniform Flow Field Distribution is arranged, i.e. NH in the flue gas
3With NO
xUniformity.When the ammonia part is excessive, can cause local the escaping of ammonia rate height, the ammonia meeting and the SO of escape
3Reacting generating salt, the corrosion upstream device; Ammonia part NO can occur when local deficiency
xThe result who is not reduced influences denitration efficiency.
Publication number is to disclose a kind of denitrating flue gas vortex mixer and eddy current mixed method in the Chinese invention patent Shen Qing Publication specification of CN101342457A, wherein the lee side of hybrid element is planar design, reducing agent ammonia forms eddy current on from the nozzle ejection to the hybrid element, evenly disperses.But the dispersion effect of this hybrid element is unsatisfactory.
Summary of the invention
In view of this, in order to address the above problem, for this reason, the present invention proposes the flue gas mixing element in the better flue gas denitrification system of a kind of dispersion effect.
The object of the present invention is achieved like this: flue gas mixing element, the lee side of described flue gas mixing element are convex surface.
Further, described flue gas mixing element is made by carbon steel;
Further, the stoss side of described flue gas mixing element is the plane.
The present invention also provides the flue gas denitrification system that uses above-mentioned flue gas mixing element, the flue gas of described flue gas denitrification system mixes with reducing gas in the pipeline of portion and is provided with flue gas mixing element, described flue gas mixing element is inclined in the pipeline, the lee side of flue gas mixing element is a convex surface and relative with the spout of reducing agent jet pipe, and the stoss side of flue gas mixing element is relative with the flow direction of flue gas.
Further, described flue gas mixing element is fixed in inner-walls of duct by brace summer.
The utility model is with respect to prior art, has following advantage: when the lee side of convex is arrived in the reducing agent gas shock, can form the reflected gas stream of divergent shape, and flue gas is when impacting the stoss side of planar shaped, can form a large amount of whirlpools at the back side of stoss side, by the reflected gas stream of divergent shape and the double action of whirlpool, the mixed effect of reducing agent is better.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent,, perhaps can obtain instruction from the practice of the present invention based on being conspicuous to those skilled in the art to investigating hereinafter.Target of the present invention and other advantages can be passed through following specification, claims, and the specifically noted structure realizes and obtains in the accompanying drawing.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing:
Fig. 1 shows the structural representation that uses flue gas denitrification system of the present invention.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
Referring to Fig. 1, the flue gas of flue gas denitrification system mixes the pipeline 1 of portion with reducing gas in, hybrid element 2 is set, described hybrid element 2 is fixed in pipeline 1 inwall by brace summer 3, hybrid element 2 is obliquely installed, the angle of the axis of the axis of hybrid element 2 and pipeline 1 is the 30-60 degree, so that the lee side 4 of hybrid element 2 is relative with the spout of reducing agent jet pipe 5, the lee side 4 of hybrid element 2 does not contact with the spout of reducing agent jet pipe 5, the lee side 4 of hybrid element 2 is a convex surface, stoss side 6 is the plane, and is relative with the flow direction of flue gas.Like this, when injection of reducing agent is mapped to hybrid element 2 lee sides 4, diffused into the very big air-flow of diffusion 7 by convex surface 4 reflections; After flue gas is run into the stoss side 6 of hybrid element 2 simultaneously, form disturbance, thereby flue gas and ammonia mix fully.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1. flue gas mixing element, it is characterized in that: the lee side of described flue gas mixing element is a convex surface.
2. according to the described flue gas mixing element of claim 1, it is characterized in that: described flue gas mixing element is made by carbon steel.
3. according to claim 1 or 2 described flue gas mixing elements, it is characterized in that: the stoss side of described flue gas mixing element is the plane.
4. use flue gas denitrification system as flue gas mixing element as described in the claim 1,2 or 3, it is characterized in that: the flue gas of described flue gas denitrification system mixes with reducing gas in the pipeline of portion and is provided with flue gas mixing element, described flue gas mixing element is inclined in the pipeline, the lee side of flue gas mixing element is a convex surface and relative with the spout of reducing agent jet pipe, and the stoss side of flue gas mixing element is relative with the flow direction of flue gas.
5. flue gas denitrification system according to claim 4 is characterized in that: described flue gas mixing element is fixed in inner-walls of duct by brace summer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186256.8A CN101856598A (en) | 2010-05-28 | 2010-05-28 | Smoke gas mixing element and smoke gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186256.8A CN101856598A (en) | 2010-05-28 | 2010-05-28 | Smoke gas mixing element and smoke gas denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101856598A true CN101856598A (en) | 2010-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010186256.8A Pending CN101856598A (en) | 2010-05-28 | 2010-05-28 | Smoke gas mixing element and smoke gas denitration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN101856598A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2461414C1 (en) * | 2011-03-15 | 2012-09-20 | Владимир Антонович Шутиков | Method of producing gas mix |
| RU2515448C1 (en) * | 2012-11-29 | 2014-05-10 | Общество с ограниченной ответственностью "Инновационные биотехнологии" (ООО "Инновационные биотехнологии") | Method for creation of model gas-and-air mixtures based on thermal extraction of volatile components from natural tobacco raw material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007255343A (en) * | 2006-03-24 | 2007-10-04 | Isuzu Motors Ltd | Exhaust emission control method and exhaust emission control system |
| CN101708430A (en) * | 2009-11-16 | 2010-05-19 | 浙江大学 | Ammonia spraying and mixing system for coal-fired flue gas SCR denitration technology |
| CN201735313U (en) * | 2010-05-28 | 2011-02-09 | 中电投远达环保工程有限公司 | Flue gas mixing component and flue gas denitration system |
-
2010
- 2010-05-28 CN CN201010186256.8A patent/CN101856598A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007255343A (en) * | 2006-03-24 | 2007-10-04 | Isuzu Motors Ltd | Exhaust emission control method and exhaust emission control system |
| CN101708430A (en) * | 2009-11-16 | 2010-05-19 | 浙江大学 | Ammonia spraying and mixing system for coal-fired flue gas SCR denitration technology |
| CN201735313U (en) * | 2010-05-28 | 2011-02-09 | 中电投远达环保工程有限公司 | Flue gas mixing component and flue gas denitration system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2461414C1 (en) * | 2011-03-15 | 2012-09-20 | Владимир Антонович Шутиков | Method of producing gas mix |
| RU2515448C1 (en) * | 2012-11-29 | 2014-05-10 | Общество с ограниченной ответственностью "Инновационные биотехнологии" (ООО "Инновационные биотехнологии") | Method for creation of model gas-and-air mixtures based on thermal extraction of volatile components from natural tobacco raw material |
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Application publication date: 20101013 |