CN208711397U - Pipe-line mixer and refuse burning system suitable for denitrating flue gas - Google Patents
Pipe-line mixer and refuse burning system suitable for denitrating flue gas Download PDFInfo
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- CN208711397U CN208711397U CN201821133939.5U CN201821133939U CN208711397U CN 208711397 U CN208711397 U CN 208711397U CN 201821133939 U CN201821133939 U CN 201821133939U CN 208711397 U CN208711397 U CN 208711397U
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Abstract
The utility model discloses a kind of pipe-line mixer and refuse burning system suitable for denitrating flue gas, which includes: level-one mixer, and the level-one mixer has reducing agent entrance and water inlet；Secondary mixer, the secondary mixer include the contraction section and diffuser being sequentially connected, and the contraction section is connected with the level-one mixer, turbulator are equipped in the diffuser, and the diffuser has mixture export.The pipe-line mixer is mixed using two-stage, is not necessarily to external impetus, reducing agent can be made to be sufficiently mixed with water, improve the denitration efficiency of reducing agent.
Description
Technical field
The utility model belongs to chemical field, specifically, mixed the utility model relates to be suitable for the pipeline of denitrating flue gas
Clutch and refuse burning system.
Background technique
Minimizing, recycling, the harmless treatment of waste can be achieved at the same time in garbage incineration technology.However, waste incineration institute
Contain a large amount of nitrogen oxides in the flue gas of generation, nitrogen oxides and its caused photochemical fog can generate serious danger to environment
Evil, it is therefore necessary to take denitrating flue gas measure, reduce the emission level of nitrogen oxides.
The most common technique of denitrating flue gas is SNCR and SCR at present.Mainly by spraying into certain density go back in flue gas
Reaction of nitrogen oxides in former agent (ammonia or urea liquid), reducing agent and flue gas generates N2And H2O.It is adopted in reducing agent preparation process
The mixed effect of pipe-line mixer directly influences reducing agent usage amount and denitration efficiency.Conventional garbage incineration flue gas denitration
Pipe-line mixer is mostly simple pipe-line mixer, and reducing agent is mixed with dilution water confluence, and incorporation time is long short across journey, is difficult to mix
It closes uniform.
Therefore, the pipe-line mixer of existing denitrating flue gas is further improved.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of pipe-line mixer and refuse burning system suitable for denitrating flue gas with a novel purpose.The pipeline is mixed
Clutch is mixed using two-stage, is not necessarily to external impetus, reducing agent can be made to be sufficiently mixed with water, improve the denitration efficiency of reducing agent.
In the one aspect of the utility model, the utility model proposes a kind of pipeline mixing suitable for denitrating flue gas
Device.Embodiment according to the present utility model, the pipe-line mixer include:
Level-one mixer, the level-one mixer have reducing agent entrance and water inlet；
Secondary mixer, the secondary mixer include the contraction section and diffuser being sequentially connected, the contraction section and institute
It states level-one mixer to be connected, turbulator is equipped in the diffuser, and the diffuser has mixture export.
According to the pipe-line mixer of the denitrating flue gas of the utility model embodiment, reducing agent and water are carried out through level-one mixer
Premixing, the liquid after premixing carry out secondary mixing by secondary mixer, wherein the liquid after being pre-mixed after contraction section
Speed increase, subsequently enter diffuser, be provided with turbulator in diffuser, can dramatically increase disturbance with fully ensure that reducing agent with
Water is uniformly mixed.The pipe-line mixer is mixed using two-stage as a result, is not necessarily to external impetus, and reducing agent and water can be made sufficiently mixed
It closes, improves the denitration efficiency of reducing agent.
In addition, according to the pipe-line mixer suitable for denitrating flue gas of the utility model above-described embodiment can also have as
Under additional technical characteristic:
Optional, the center overlapping of axles of the level-one mixer, the contraction section and the diffuser.Be conducive to as a result,
Processing cost is reduced while the mixed effect of guarantee reducing agent and water.
Optional, the reducing agent entrance is located at one end on the level-one mixer far from the secondary mixer, institute
State the side that water inlet is located at the level-one mixer.Thus, it can be achieved that the premixing of reducing agent and water.
Optional, the reducing agent entrance is located at the side of the level-one mixer, and the water inlet is located at the level-one
Far from one end of the secondary mixer on mixer.Thus, it can be achieved that the premixing of reducing agent and water.
Optional, the level-one mixer is cylindrical shape, the diameter of the level-one mixer be the reducing agent entrance or
2-5 times of the water inlet diameter.Thus, it is ensured that reducing agent and water have enough spaces to be pre-mixed.
Optional, the angle of throat of the contraction section is 10-30 degree.Be conducive to the flow velocity of liquid after raising is pre-mixed as a result,
Increase hybrid power.
Optional, the angle of flare of the diffuser is 20-45 degree.It as a result, can be by expanding blending space to improve mixing
Efficiency.
Optional, the mixture export is located at one end on the diffuser far from the level-one mixer.Have as a result,
It is uniformly mixed conducive to the mixed liquor that guarantee goes out.
Optional, substantially symmetrical about its central axis arrangement of the turbulator relative to the diffuser.Be conducive to increase as a result, and disturb
Stream improves mixed effect.
In another aspect of the utility model, the utility model proposes a kind of refuse burning systems, practical according to this
Novel embodiment, the refuse burning system include waste incinerator and pipe-line mixer, the pipe-line mixer and the rubbish
Rubbish incinerator is connected, wherein the pipe-line mixer is the above-mentioned pipe-line mixer suitable for denitrating flue gas.It can significantly drop as a result,
The denitration efficiency and denitration effect of low refuse burning system flue gas, and in denitrification process reducing agent used amount it is lower, at flue gas
Managing cost reduces.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the pipe-line mixer suitable for denitrating flue gas according to the utility model one embodiment.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the one aspect of the utility model, the utility model proposes a kind of pipeline mixing suitable for denitrating flue gas
Device.Embodiment according to the present utility model, with reference to Fig. 1, which includes: level-one mixer 100 and secondary mixer
200。
Embodiment according to the present utility model, level-one mixer 100 has reducing agent entrance 101 and water inlet 102, with benefit
Enter level-one mixer in reducing agent and water to be pre-mixed.It should be noted that the specific position of reducing agent entrance and water inlet
It sets and is not particularly restricted, those skilled in the art can select according to actual needs.One according to the present utility model
Specific embodiment, reducing agent entrance 101 can be located at one end on level-one mixer 100 far from secondary mixer 200, water inlet
102 can be located at the side of level-one mixer 100.Further embodiment according to the present utility model, reducing agent entrance 101 can be with
Positioned at the side of level-one mixer 100, water inlet 102 can be located at one far from secondary mixer 200 on level-one mixer 100
End.It can be achieved into level-one mixer while supplying reducing agent and water as a result, and then it is made to complete premixing.According to this reality
With another novel embodiment, level-one mixer 100 is cylindrical shape, and the diameter of level-one mixer is not particularly restricted, this
Field technical staff can select according to actual needs, for example, can depending on the uninterrupted of reducing agent and water, one
The diameter of grade mixer 100 can be 2-5 times of 102 diameter of reducing agent entrance 101 or water inlet.Inventors have found that if level-one
The diameter of mixer is too small, then the space of reducing agent and water premixing is too small, is unfavorable for the mixing of reducing agent and water；As level-one is mixed
The diameter of clutch is excessive, and it will cause the wastes in level-one mixer space.
Embodiment according to the present utility model, secondary mixer 200 include the contraction section 210 and diffuser being sequentially connected
220, contraction section 210 is connected with level-one mixer 100, turbulator 21 is equipped in diffuser 220, and diffuser 220 is with mixed
Close liquid outlet 201.After contraction section is shunk, flowing velocity increases liquid after premixing, diffuser is subsequently entered, in diffuser
It is provided with turbulator, disturbance can be dramatically increased to fully ensure that reducing agent is uniformly mixed with water.
One embodiment according to the present utility model, the central axis of level-one mixer 100, contraction section 210 and diffuser 220
It is overlapped.Be conducive to reduce processing cost while improving the mixed effect of reducing agent and water as a result,.
The angle of throat α of further embodiment according to the present utility model, contraction section 210 is not particularly restricted, this field
Technical staff can select according to actual needs, such as can be 10-30 degree.Inventors have found that if angle of throat is too small,
Flow rate of liquid after premixing cannot obviously increase, and second level hybrid power is insufficient；If angle of throat is excessive, hybrid power is enough,
But it will lead to the increase of secondary mixer length, resistance increase, be unfavorable for the flowing of liquid.
The angle of flare β of another embodiment according to the present utility model, diffuser 220 is not particularly restricted, this field
Technical staff can select according to actual needs, such as can be 20-45 degree.Inventors have found that if angle of flare is too small,
Secondary mixer length increases, and liquid cross-sectional variation, which slows down, causes hybrid power insufficient；If angle of flare is excessive, secondary mixer
Diffuser blending space is insufficient, influences mixed effect.
Another embodiment according to the present utility model is equipped with far from one end of level-one mixer 100 in diffuser 220 and mixes
Close liquid outlet 201.Mixer is discharged in mixed liquor after can mixing as a result,.Another embodiment according to the present utility model,
Substantially symmetrical about its central axis arrangement of the turbulator 21 relative to diffuser 220.Be conducive to increase flow-disturbing as a result, improve mixed effect.
According to the pipe-line mixer of the denitrating flue gas of the utility model embodiment, reducing agent and water are carried out through level-one mixer
Premixing, the liquid after premixing carry out secondary mixing by secondary mixer, wherein the liquid after being pre-mixed after contraction section
Speed increase, subsequently enter diffuser, be provided with turbulator in diffuser, can dramatically increase disturbance with fully ensure that reducing agent with
Water is uniformly mixed.The pipe-line mixer is mixed using two-stage as a result, is not necessarily to external impetus, and reducing agent and water can be made sufficiently mixed
It closes, improves the denitration efficiency of reducing agent.
In another aspect of the utility model, the utility model proposes a kind of refuse burning systems, practical according to this
Novel embodiment, the refuse burning system include waste incinerator and pipe-line mixer, pipe-line mixer and waste incinerator
It is connected, wherein pipe-line mixer is the above-mentioned pipe-line mixer suitable for denitrating flue gas.Specifically, waste incinerator is working
When can generate a large amount of flue gas, pipe-line mixer can produce the mixed liquor containing denitration effect, by generating waste incinerator
The mixed liquor being uniformly mixed containing denitration effect that generates of flue gas and pipe-line mixer act on, it can be achieved that being taken off to flue gas
Nitre, and denitration efficiency is high, denitration effect is good.The denitration efficiency and denitration effect of refuse burning system flue gas can be significantly reduced as a result,
Fruit, and in denitrification process reducing agent used amount it is lower, fume treatment cost reduces.
It should be noted that feature and advantage described in the above-mentioned pipe-line mixer for suitable for denitrating flue gas are same
Suitable for the refuse burning system, details are not described herein again.
Below with reference to specific embodiment, the utility model is described, it should be noted that these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment 1
80000Nm3/ h flue gas of refuse burning is using urea as reducing agent denitration, 40wt% urea liquid (42.5L/h)
It is mixed with demineralized water (300L/h) through the above-mentioned pipe-line mixer of the utility model, wherein level-one mixer is cylindrical shape, diameter
It is 3 times of reducing agent entrance, the angle of throat of secondary mixer contraction section is 10 degree, and the angle of flare of diffuser is 20 degree, diffuser
Interior setting turbulator.Mixed liquid concentration is about 5wt% after mixing, and mixed liquor is sprayed into flue gas by nozzle, so in flue gas
Nitrogen oxides NOXReaction, nitric efficiency is about 40%.
Embodiment 2
100000Nm3/ h flue gas of refuse burning using ammonium hydroxide be used as reducing agent denitration, 25wt% ammonia spirit (52L/h) and
Demineralized water (165L/h) is mixed through the above-mentioned pipe-line mixer of the utility model, wherein level-one mixer is cylindrical shape, and diameter is
4 times of reducing agent entrance, the angle of throat of secondary mixer contraction section are 20 degree, and the angle of flare of diffuser is 30 degree, in diffuser
Turbulator is set.Mixed liquid concentration is about 6wt% after mixing, and mixed liquor is sprayed into flue gas by nozzle, so in flue gas
Nitrogen oxides NOXReaction, nitric efficiency is about 45%.
Embodiment 3
60000Nm3/ h flue gas of refuse burning using ammonium hydroxide be used as reducing agent denitration, 25wt% ammonia spirit (30L/h) and
Demineralized water (100L/h) is mixed through the above-mentioned pipe-line mixer of the utility model, wherein level-one mixer is cylindrical shape, and diameter is
5 times of reducing agent entrance, the angle of throat of secondary mixer contraction section are 25 degree, and the angle of flare of diffuser is 35 degree, in diffuser
Turbulator is set.Mixed liquid concentration is about 5wt% after mixing, and mixed liquor is sprayed into flue gas by nozzle, so in flue gas
Nitrogen oxides NOXReaction, nitric efficiency is about 50%.
Embodiment 4
12000Nm3/ h flue gas of refuse burning using ammonium hydroxide be used as reducing agent denitration, 25wt% ammonia spirit (62L/h) and
Demineralized water (201L/h) is mixed through the above-mentioned pipe-line mixer of the utility model, wherein level-one mixer is cylindrical shape, and diameter is
4 times of reducing agent entrance, the angle of throat of secondary mixer contraction section are 30 degree, and the angle of flare of diffuser is 45 degree, in diffuser
Turbulator is set.Mixed liquid concentration is about 5wt% after mixing, and mixed liquor is sprayed into flue gas by nozzle, so in flue gas
Nitrogen oxides NOXReaction, nitric efficiency is about 48%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of pipe-line mixer suitable for denitrating flue gas characterized by comprising
Level-one mixer, the level-one mixer have reducing agent entrance and water inlet；
Secondary mixer, the secondary mixer include the contraction section and diffuser being sequentially connected, the contraction section and described one
Grade mixer is connected, and turbulator is equipped in the diffuser, and the diffuser has mixture export.
2. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the level-one mixing
The center overlapping of axles of device, the contraction section and the diffuser.
3. the pipe-line mixer according to claim 1 or 2 suitable for denitrating flue gas, which is characterized in that the reducing agent
Entrance is located at one end on the level-one mixer far from the secondary mixer, and the water inlet is located at the level-one mixer
Side.
4. the pipe-line mixer according to claim 1 or 2 suitable for denitrating flue gas, which is characterized in that the reducing agent
Entrance is located at the side of the level-one mixer, and the water inlet is located on the level-one mixer far from the secondary mixer
One end.
5. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the level-one mixer
For cylindrical shape, the diameter of the level-one mixer is 2-5 times of the reducing agent entrance or the water inlet diameter.
6. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the receipts of the contraction section
Contracting angle is 10-30 degree.
7. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the expansion of the diffuser
Dissipating angle is 20-45 degree.
8. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the mixture export
It is located at one end on the diffuser far from the level-one mixer.
9. the pipe-line mixer according to claim 1 suitable for denitrating flue gas, which is characterized in that the turbulator is opposite
In the arrangement substantially symmetrical about its central axis of the diffuser.
10. a kind of refuse burning system characterized by comprising
Waste incinerator；And
Pipe-line mixer, the pipe-line mixer are connected with the waste incinerator；
Wherein, the pipe-line mixer is the pipe-line mixer of any of claims 1-9 suitable for denitrating flue gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821133939.5U CN208711397U (en) | 2018-07-17 | 2018-07-17 | Pipe-line mixer and refuse burning system suitable for denitrating flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821133939.5U CN208711397U (en) | 2018-07-17 | 2018-07-17 | Pipe-line mixer and refuse burning system suitable for denitrating flue gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704456A (en) * | 2018-07-17 | 2018-10-26 | 中国恩菲工程技术有限公司 | Pipe-line mixer and refuse burning system suitable for denitrating flue gas |
| CN110559900A (en) * | 2019-09-03 | 2019-12-13 | 南京航空航天大学 | high-efficient compact blender with asymmetric cascade structure |
| CN112295429A (en) * | 2020-10-27 | 2021-02-02 | 周宁县善长祥农业机械研发有限公司 | Liquid mixer and mixing method |
-
2018
- 2018-07-17 CN CN201821133939.5U patent/CN208711397U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704456A (en) * | 2018-07-17 | 2018-10-26 | 中国恩菲工程技术有限公司 | Pipe-line mixer and refuse burning system suitable for denitrating flue gas |
| CN110559900A (en) * | 2019-09-03 | 2019-12-13 | 南京航空航天大学 | high-efficient compact blender with asymmetric cascade structure |
| CN112295429A (en) * | 2020-10-27 | 2021-02-02 | 周宁县善长祥农业机械研发有限公司 | Liquid mixer and mixing method |
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