CN210752467U - Mixing device - Google Patents
Mixing device Download PDFInfo
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- CN210752467U CN210752467U CN201921674005.7U CN201921674005U CN210752467U CN 210752467 U CN210752467 U CN 210752467U CN 201921674005 U CN201921674005 U CN 201921674005U CN 210752467 U CN210752467 U CN 210752467U
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Abstract
The utility model discloses a mixer, include: the shell comprises a flue gas inlet, a mixing section, a contraction section, an expansion section and a flue gas outlet in sequence along the flow direction of flue gas; the reducing agent inlet is arranged in a tangent mode with the side wall of the mixing section; the spiral device is arranged on the contraction section, a spiral channel is formed by the spiral device and the inner wall of the contraction section, and the diameter of the contraction section is gradually reduced along the flowing direction of the flue gas; the turbulence generator is arranged on the expansion section and used for blocking the flow of the smoke, and the diameter of the expansion section increases along the smoke flow direction. The utility model discloses a blender mixes more evenly, mixes effectually.
Description
Technical Field
The utility model relates to a technical field is handled to the flue gas, especially relates to a mixer.
Background
The smoke emitted by the internal combustion engine contains a large amount of nitrogen oxides (NOx) when the internal combustion engine works, which not only stimulates the respiratory system of people and damages animals and plants, but also is one of the main substances causing acid rain and photochemical reaction to destroy the ozone layer and further cause greenhouse effect. In recent years, with the increasing perfection of national environmental awareness and environmental regulations, flue gas denitration technology has been adopted for NOx emission sources to realize NOx emission reduction.
At present, the most common processes for flue gas denitration are SNCR and SCR. Mainly by spraying a certain concentration of reducing agent (ammonia or urea solution) into the flue gas, the reducing agent reacts with nitrogen oxides in the flue gas to generate N2 and H2O. The flue gas denitration technology needs a matched denitration device, and the denitration device is used for mixing the reducing agent with the flue gas, so that denitration is realized. Generally adopt the line mixer among the current denitrification facility to make flue gas and reductant mix, the mixed effect of line mixer directly influences denitration efficiency. Current flue gas denitration line mixer is mostly simple line mixer, and flue gas and reductant mixing time short process are long, and difficult misce bene mixes the effect poorly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a blender that misce bene, mixing effect are good.
In order to solve the above technical problem, the utility model discloses a technical scheme provide a mixer, include: the shell comprises a flue gas inlet, a mixing section, a contraction section, an expansion section and a flue gas outlet in sequence along the flow direction of flue gas; the reducing agent inlet is arranged in a tangent mode with the side wall of the mixing section; the spiral device is arranged on the contraction section, a spiral channel is formed by the spiral device and the inner wall of the contraction section, and the diameter of the contraction section is gradually reduced along the flowing direction of the flue gas; the turbulence generator is arranged on the expansion section and used for blocking the flow of the smoke, and the diameter of the expansion section increases along the smoke flow direction.
In a specific embodiment of the present invention, the casing further includes a rectifying section, the rectifying section is disposed between the contracting section and the expanding section, and a rectifier is disposed in the rectifying section.
In a specific embodiment of the present invention, the inlet and the outlet of the rectifying section are provided with the rectifier.
In a specific embodiment of the present invention, the number of the turbulators is plural, and the diameter of the turbulators increases along the flowing direction of the flue gas.
In a specific embodiment of the utility model, the spoiler includes installation department, blade, solid fixed ring and linking bridge, the lateral wall of installation department evenly extends and is provided with a plurality ofly the blade, it is a plurality of the blade is kept away from the one end of installation department connect in gu fixed ring's inner wall, gu fixed ring's outer wall passes through linking bridge with the interior wall connection of expansion section.
In a specific embodiment of the utility model, the expansion section still includes the side shield, the side shield symmetry sets up the inner wall of expansion section, two that use in pairs distance between the side shield reduces gradually along flue gas flow direction.
In a specific embodiment of the present invention, the side baffle is obliquely disposed at an inner wall of the expanding section at an angle of 60 ° to 80 °.
In a specific embodiment of the present invention, the side baffle has a plurality of pairs, and each of the pair of side baffles is provided upstream of the spoiler.
In a specific embodiment of the present invention, the flue gas inlet, the mixing section, the contraction section, the rectification section, the expansion section and the central axis of the flue gas outlet coincide with each other, and coincide with the central axis of the inner cavity of the housing.
In a particular embodiment of the invention, the central axis of the screw, the rectifier and the spoiler coincides with the central axis of the inner cavity of the housing.
By applying the technical scheme of the utility model, the flue gas enters the inner cavity of the shell from the flue gas inlet, the reducing agents such as urea solution enter the inner cavity of the shell from the reducing agent inlet, and the flue gas and the reducing agent are preliminarily mixed in the mixing section; then, the flue gas flows to the contraction section and flows spirally in a spiral channel formed by the inner walls of the spiral device and the contraction section, so that the flowing length of the flue gas is increased, the flue gas and the reducing agent are mixed more fully, and meanwhile, as the diameter of the contraction section along the flowing direction of the flue gas is gradually reduced, the flowing speed of the flue gas is increased, and the mixing efficiency of the flue gas and the reducing agent is improved; then, the flue gas flows to the expansion section, the flow speed of the flue gas is slowed down, and the flow speed of the flue gas is further slowed down under the blocking of the vortex generator, so that the flue gas and the reducing agent are fully mixed, and the mixing effect is improved. The utility model discloses a blender mixes more evenly, mixes effectually.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the mixer of the present invention;
fig. 2 is a schematic structural view of the turbulator of the mixer of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the mixer embodiment of the present invention comprises: the shell 1 comprises a flue gas inlet 11, a mixing section 12, a contraction section 14, an expansion section 16 and a flue gas outlet 17 in sequence along the flow direction of flue gas. And the reducing agent inlet 13 is tangentially arranged with the side wall of the mixing section 12. The screw 2 is arranged on the contraction section 14, a spiral channel is formed by the screw and the inner wall of the contraction section 14, and the diameter of the contraction section 14 decreases progressively along the flowing direction of the flue gas. And the turbulence generator 4 is arranged on the expansion section 16 and used for blocking the flow of the flue gas, and the diameter of the expansion section 16 increases along the flow direction of the flue gas.
By applying the technical scheme of the embodiment, the flue gas enters the inner cavity of the shell 1 from the flue gas inlet 11, the reducing agents such as urea solution enter the inner cavity of the shell 1 from the reducing agent inlet 13, and the flue gas and the reducing agent are preliminarily mixed in the mixing section 12; then, the flue gas flows to the contraction section 14 and spirally flows in a spiral channel formed by the inner walls of the spiral device 2 and the contraction section 14, so that the flow length of the flue gas is increased, the flue gas and the reducing agent are more fully mixed, and meanwhile, as the diameter of the contraction section 14 along the flow direction of the flue gas is gradually reduced, the flow speed of the flue gas is increased, and the mixing efficiency of the flue gas and the reducing agent is improved; then, the flue gas flows to the expansion section 16, the flow speed of the flue gas is slowed down, and the flow speed of the flue gas is further slowed down under the blocking of the spoiler 4, so that the flue gas and the reducing agent are fully mixed, and the mixing effect is improved. The mixer of this embodiment mixes more evenly, mixes effectually.
In an embodiment, the casing 1 further includes a rectifying section 15, the rectifying section 15 is disposed between the contracting section 14 and the expanding section 16, the rectifying section 15 is provided with the rectifier 3 therein, the rectifier 3 is a grid plate, and the grid plate is uniformly provided with through holes, and the through holes may be circular, diamond, square, or the like. By providing the rectifier 3, the flue gas entering the rectifying section 15 can be regulated so that the flue gas and the reducing agent are thoroughly mixed.
In particular, the inlet and the outlet of the rectifying section 15 are provided with a rectifier 3. The hole diameters of the through holes of the two rectifiers 3 can be adjusted according to actual conditions.
In one embodiment, the number of the turbulence generators 4 is multiple, and the diameters of the multiple turbulence generators 4 are sequentially increased along the smoke flowing direction. By arranging the plurality of spoilers 4, the smoke can be gradually blocked and decelerated, so that the smoke and the reducing agent can be fully mixed.
Specifically, the number of the spoilers 4 is three.
In an embodiment, the spoiler 4 includes a mounting portion 41, a plurality of vanes 42 uniformly extending from a side wall of the mounting portion 41, a fixing ring 43 and a connecting bracket 44, wherein an end of the plurality of vanes 42 away from the mounting portion 41 is connected to an inner wall of the fixing ring 43, and an outer wall of the fixing ring 43 is connected to an inner wall of the expanding section 16 through the connecting bracket 44.
Specifically, the number of the blades 42 is four.
In one embodiment, the expanding section 16 further comprises side baffles 5, the side baffles 5 are symmetrically arranged on the inner wall of the expanding section 16, and the distance between two side baffles 5 used in pairs is gradually reduced along the flowing direction of the flue gas.
Specifically, the side baffle 5 is obliquely arranged on the inner wall of the expanding section 16, and the oblique angle is 60-80 degrees.
In one embodiment, there are a plurality of pairs of side guards 5, and a pair of side guards 5 is provided upstream of each spoiler 4.
Specifically, the number of the side fences 5 is three pairs.
In an embodiment, the central axes of the flue gas inlet 11, the mixing section 12, the converging section 14, the rectifying section 15, the diverging section 16 and the flue gas outlet 17 coincide and coincide with the central axis of the inner cavity of the housing 1. Wherein, the mixing section 12 and the rectifying section 15 are cylindrical, and the contraction section 14 and the expansion section 16 are conical cylindrical. The convergent section 14 has a diameter decreasing in the direction of flow of the flue gas with a convergent angle (angle between the generatrix of the convergent section 14 and its central axis) of 30 °, and the divergent section 16 has a diameter increasing in the direction of flow of the flue gas with a divergent angle (angle between the generatrix of the divergent section 16 and its central axis) of 30 °. Therefore, the mixing effect of the flue gas and the reducing agent is improved.
In an embodiment, the central axes of the screw 2, the commutator 3 and the spoiler 4 coincide with the central axis of the inner cavity of the housing 1. Therefore, the mixing effect of the flue gas and the reducing agent is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A mixer, comprising:
the shell comprises a flue gas inlet, a mixing section, a contraction section, an expansion section and a flue gas outlet in sequence along the flow direction of flue gas;
the reducing agent inlet is arranged in a tangent mode with the side wall of the mixing section;
the spiral device is arranged on the contraction section, a spiral channel is formed by the spiral device and the inner wall of the contraction section, and the diameter of the contraction section is gradually reduced along the flowing direction of the flue gas;
the turbulence generator is arranged on the expansion section and used for blocking the flow of the smoke, and the diameter of the expansion section increases along the smoke flow direction.
2. The mixer of claim 1, wherein the housing further comprises a rectifying section disposed between the convergent section and the divergent section, the rectifying section having a rectifier disposed therein.
3. A mixer according to claim 2, wherein the inlet and outlet of the rectifying section are provided with the rectifier.
4. The mixer according to claim 1, wherein the number of the turbulence generators is plural, and the diameters of the plural turbulence generators increase in sequence along the flow direction of the flue gas.
5. The mixer according to claim 4, wherein the spoiler comprises a mounting portion, a plurality of blades, a fixing ring and a connecting bracket, the side wall of the mounting portion is uniformly extended and provided with the plurality of blades, one end of the plurality of blades away from the mounting portion is connected to the inner wall of the fixing ring, and the outer wall of the fixing ring is connected with the inner wall of the expanding section through the connecting bracket.
6. The mixer of claim 1, wherein the expanding section further comprises side baffles symmetrically disposed on an inner wall of the expanding section, a distance between two of the side baffles used in a pair gradually decreasing along a flow direction of the flue gas.
7. The mixer of claim 6 wherein the side dams are obliquely disposed at an angle of 60 ° -80 ° to the inner wall of the diverging section.
8. The mixer of claim 6 wherein there are multiple pairs of said side baffles, a pair of said side baffles being disposed upstream of each said turbulator.
9. The mixer of claim 2, wherein central axes of the flue gas inlet, the mixing section, the converging section, the rectifying section, the diverging section, and the flue gas outlet coincide with a central axis of an inner cavity of the housing.
10. The mixer of claim 9 wherein the central axes of the auger, the fairings, and the turbulators coincide with the central axis of the internal cavity of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674005.7U CN210752467U (en) | 2019-10-09 | 2019-10-09 | Mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921674005.7U CN210752467U (en) | 2019-10-09 | 2019-10-09 | Mixing device |
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| Publication Number | Publication Date |
|---|---|
| CN210752467U true CN210752467U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921674005.7U Active CN210752467U (en) | 2019-10-09 | 2019-10-09 | Mixing device |
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| CN (1) | CN210752467U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999993A (en) * | 2021-02-08 | 2021-06-22 | 乌兰浩特市圣益商砼有限公司 | Vortex-spraying two-stage strengthening reactor for preparing polycarboxylate superplasticizer and preparation method |
| CN113599970A (en) * | 2021-09-02 | 2021-11-05 | 洛阳万基炭素有限公司 | Adsorption device for asphalt smoke tar black method |
| CN113748817A (en) * | 2021-09-15 | 2021-12-07 | 塔里木大学 | Static fertilizer pressure boost irrigation equipment that mixes of many solution pipelines |
-
2019
- 2019-10-09 CN CN201921674005.7U patent/CN210752467U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999993A (en) * | 2021-02-08 | 2021-06-22 | 乌兰浩特市圣益商砼有限公司 | Vortex-spraying two-stage strengthening reactor for preparing polycarboxylate superplasticizer and preparation method |
| CN113599970A (en) * | 2021-09-02 | 2021-11-05 | 洛阳万基炭素有限公司 | Adsorption device for asphalt smoke tar black method |
| CN113599970B (en) * | 2021-09-02 | 2023-11-21 | 洛阳万基炭素有限公司 | Asphalt smoke and tar black method adsorption device |
| CN113748817A (en) * | 2021-09-15 | 2021-12-07 | 塔里木大学 | Static fertilizer pressure boost irrigation equipment that mixes of many solution pipelines |
| CN113748817B (en) * | 2021-09-15 | 2023-03-14 | 塔里木大学 | Static fertilizer-mixing pressure-boosting irrigation device with multiple solution pipelines |
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