CN209576269U - A kind of adverse current multi-point injection grid for denitrating flue gas - Google Patents
A kind of adverse current multi-point injection grid for denitrating flue gas Download PDFInfo
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- CN209576269U CN209576269U CN201920204819.8U CN201920204819U CN209576269U CN 209576269 U CN209576269 U CN 209576269U CN 201920204819 U CN201920204819 U CN 201920204819U CN 209576269 U CN209576269 U CN 209576269U
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- injection
- flue gas
- branch pipe
- adverse current
- circular spout
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Abstract
The utility model discloses a kind of adverse current multi-point injection grids for denitrating flue gas, including air inlet supervisor and multiple injection branch pipes, multiple injection branch pipes are connected with air inlet supervisor respectively, and each injection branch pipe is provided with equidistant circular spout in the axial direction, and circular spout is arranged against airflow direction.The multiple spot upstream injection grid device is by using multiple rows of adverse current circular spout, avoid the easy stifled property of the injection direction of plain nozzle type injection grid and the unicity of speed and nozzle, the inverse airflow direction setting of circular spout allows sprayed gas sufficiently to disturb, be uniformly mixed in short time, short distance with flue gas, reduction mixes with flue gas reaction time and distance, NO oxidation efficiency is improved, denitration cost is reduced.
Description
Technical field
The utility model relates to field of environment protection equipment more particularly to a kind of adverse current multi-point injection lattice for denitrating flue gas
Grid.
Background technique
The pollutants such as SO2, NOx, dust that the industries such as thermoelectricity, steel, smelting, chemical industry, cement, coking are discharged, seriously
Endanger human health, environment, ecology and social economy.The standard limit of smog release such as thermoelectricity, steel, coking, the cement newly promulgated are
Strict demand is proposed through the discharge to NOx.NO2 and SO2 belong to sour gas, and removing is easily reached with alkali substance reaction
Purpose.
Since 90% or more is NO in the NOx in flue gas, this just needs that NO is first oxidized to NO2, and ozone oxidation is efficient
NO oxidation technology.Injection grid is the core component of oxidizing and denitrating ozone technique, is the key that influence denitration efficiency.But mesh
Preceding ozone injection apparatus, arrangement and unreasonable structural design cause the ozone of injection to mix with flue gas effect bad, cause
Denitration efficiency is lower, material waste is big.
Summary of the invention
The utility model provides a kind of adverse current multi-point injection grid for denitrating flue gas, for solving ozone and flue gas
The problem of mixed effect is bad, NOX oxidation low efficiency.
In order to solve the above-mentioned technical problem, the utility model is achieved by the following technical programs: one kind being used for flue gas
The adverse current multi-point injection grid of denitration, including air inlet supervisor and multiple injection branch pipes, the multiple injection branch pipe respectively with it is described
Air inlet supervisor is connected, and is provided with equidistant circular spout, the circle in the axial direction on each injection branch pipe
Spout is arranged against airflow direction.
Preferentially, three rows are at least arranged in the circular spout on each injection branch pipe, circular spout edge described in every row
The axis direction spaced set of the injection branch pipe.
Preferentially, the circular spout on each injection branch pipe is set as three rows, and circular spout described in three rows is in the spray
Penetrate the arrangement that misplaces on branch pipe.
Preferentially, the angle between adjacent two rows of circular spouts on each injection branch pipe is 30 °~50 °, every phase
Angle of the adjacent two rows of circular spouts radially between the center of circle is 30 °~50 °.
Preferentially, the adverse current multi-point injection grid further includes multiple connection short tubes, and the multiple connection short tube is described
Spaced set in the axial direction on air inlet supervisor, each injection branch pipe by the corresponding connection short tube with it is described into
Gas supervisor is connected.
Preferentially, multiple injection arms parallels setting, and axis is vertical with the axis that the air inlet is responsible for.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the utility model is by using multiple rows of inverse
Circular spout is flowed, the easy stifled property of the injection direction of plain nozzle type injection grid and the unicity of speed and nozzle is avoided,
Circular spout inverse airflow direction setting allow sprayed gas and flue gas in short time, short distance sufficiently disturbance,
It is uniformly mixed, reduction mixes with flue gas reaction time and distance, improves NOX oxidation efficiency, reduces denitration cost.Meanwhile it should
Apparatus structure is simple and reliable, convenient to install and maintain, manufacturing cost is lower, easy to promote and utilize；It connects short tube and air inlet supervisor can
It is arranged to detachable connection, is conducive to the operation and maintenance of device, it is ensured that its service performance and reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of Fig. 1.
Appended drawing reference: 1, air inlet is responsible for；2, short tube is connected；3, branch pipe is sprayed；4, circular spout.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of adverse current multi-point injection grid for denitrating flue gas, including air inlet supervisor 1 and multiple
Branch pipe 3 is sprayed, the multiple injection branch pipe 3 is connected with air inlet supervisor 1 respectively, the edge on each injection branch pipe 3
Axis direction is provided with equidistant circular spout 4, and the circular spout 4 is arranged against airflow direction.
The device inverse airflow direction in flue disposes (as shown by the arrow in Figure 1), and ozone source is connected with air inlet supervisor 1
Logical, ozone sprays into flue through air inlet supervisor 1, injection branch pipe 3, circular spout 4, due to using multiple rows of adverse current circular spout 4, avoids
The injection direction of plain nozzle type injection grid and the unicity of speed and the easy of nozzle block up property, the inverse gas of circular spout 4
Stream direction setting allows sprayed gas sufficiently to disturb, be uniformly mixed in short time, short distance with flue gas, reduce with
The mixed reaction time and distance of flue gas improve NOX oxidation efficiency, reduce denitration cost.Meanwhile the apparatus structure simply may be used
It leans on, is convenient to install and maintain, manufacturing cost is lower, easy to promote and utilize.
More uniform for the ozone that sprays the device in flue, the circular spout 4 on each injection branch pipe 3 is at least
Three rows, axis direction spaced set of every row's circular spout 4 along injection branch pipe 3 are set.In the present embodiment, every row is adjacent
The distance between circular spout 4 is 180mm, guarantees to eject uniform, enough ozone in flue.
In the present embodiment, the circular spout 4 on each injection branch pipe 3 is set as three rows, and three circularly shaped rows spout 4 is in injection branch
Misplace arrangement on pipe 3, so that the ozone sprayed in flue is more uniform, guarantees that ozone and flue gas are sufficiently mixed uniformly.
The angle between adjacent two rows of circular spouts 4 on each injection branch pipe 3 is 30 °~50 °, per adjacent two rows of round
Angle of the spout 4 radially between the center of circle is 30 °~50 °, and in the angular range, ozone mixes uniform with flue gas
Property be greatly improved, realize ozone sufficiently disturb, be uniformly mixed in short time, short distance with flue gas, further increase
The oxidation efficiency of NO.
The utility model further includes multiple connection short tubes 2, multiple connection short tubes 2 on air inlet supervisor 1 in the axial direction etc.
Spacing setting, each injection branch pipe 3 is connected by corresponding connection short tube 2 with air inlet supervisor 1, to make ozone from air inlet master
It is sent into injection branch pipe 3 in pipe 1, then sprays into flue through circular spout 4.
Ozone amount to guarantee each injection of circular spout 4 is uniform, is not influenced by flow perturbation, air inlet supervisor 1 and spray
The internal diameter for penetrating branch pipe 3 is all larger than the internal diameter of connection short tube 2.
All injection branch pipes 3 are arranged in parallel, and axis is vertical with the axis of air inlet supervisor 1, to guarantee to spray into flue
In ozone it is uniform, improve ozone mix with flue gas uniformity.
The protection scope of the utility model includes but is not limited to embodiment of above, and the protection scope of the utility model is to weigh
Subject to sharp claim, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that are each fallen within
The protection scope of the utility model.
Claims (6)
1. a kind of adverse current multi-point injection grid for denitrating flue gas, it is characterised in that: including air inlet supervisor (1) and multiple injections
Branch pipe (3), the multiple injection branch pipe (3) is connected with air inlet supervisor (1) respectively, in each injection branch pipe (3)
On be provided in the axial direction equidistant circular spout (4), the inverse airflow direction of the circular spout (4) is arranged.
2. a kind of adverse current multi-point injection grid for denitrating flue gas according to claim 1, it is characterised in that: Mei Gesuo
Three rows are at least arranged in the circular spout (4) on injection branch pipe (3) stated, and circular spout described in every row (4) is along the injection branch pipe
(3) axis direction spaced set.
3. a kind of adverse current multi-point injection grid for denitrating flue gas according to claim 2, it is characterised in that: Mei Gesuo
It states the circular spout (4) in injection branch pipe (3) and is set as three rows, circular spout described in three rows (4) is wrong on the injection branch pipe (3)
Position arrangement.
4. a kind of adverse current multi-point injection grid for denitrating flue gas according to claim 3, it is characterised in that: Mei Gesuo
The angle stated between adjacent two rows of circular spouts (4) in injection branch pipe (3) is 30 °~50 °, per the adjacent two rows circular jetting
The angle of mouth (4) radially between the center of circle is 30 °~50 °.
5. a kind of adverse current multi-point injection grid for denitrating flue gas according to claim 1, it is characterised in that: described inverse
Stream multi-point injection grid further includes multiple connection short tubes (2), the multiple connection short tube (2) edge on air inlet supervisor (1)
Axis direction spaced set, each injection branch pipe (3) are responsible for by the corresponding connection short tube (2) and the air inlet
(1) it is connected.
6. a kind of adverse current multi-point injection grid for denitrating flue gas according to claim 5, it is characterised in that: described
Multiple injection branch pipes (3) are arranged in parallel, and that the axis of (1) is responsible for the air inlet is vertical for axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204819.8U CN209576269U (en) | 2019-02-18 | 2019-02-18 | A kind of adverse current multi-point injection grid for denitrating flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204819.8U CN209576269U (en) | 2019-02-18 | 2019-02-18 | A kind of adverse current multi-point injection grid for denitrating flue gas |
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| CN209576269U true CN209576269U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920204819.8U Active CN209576269U (en) | 2019-02-18 | 2019-02-18 | A kind of adverse current multi-point injection grid for denitrating flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578049A (en) * | 2021-06-30 | 2021-11-02 | 成都易态科技有限公司 | Dedusting and denitration system and dedusting and denitration method |
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2019
- 2019-02-18 CN CN201920204819.8U patent/CN209576269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578049A (en) * | 2021-06-30 | 2021-11-02 | 成都易态科技有限公司 | Dedusting and denitration system and dedusting and denitration method |
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