CN207042258U - Selective catalytic reduction denitration device - Google Patents
Selective catalytic reduction denitration device Download PDFInfo
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- CN207042258U CN207042258U CN201720810410.1U CN201720810410U CN207042258U CN 207042258 U CN207042258 U CN 207042258U CN 201720810410 U CN201720810410 U CN 201720810410U CN 207042258 U CN207042258 U CN 207042258U
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- flue
- ammonia
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- bending
- catalytic reduction
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Abstract
The utility model belongs to coal-burning boiler technical field of air pollution control, a kind of more particularly to selective catalytic reduction denitration device, including boiler economizer outlet, inlet flue duct, reactor and exhaust pass, boiler economizer outlet is connected with inlet flue duct, the upper end of inlet flue duct and reactor connects, the lower end connection outlet flue of reactor；Inlet flue duct includes bending flue and vertical flue, bends in flue and is provided with deflector, and ammonia-spraying grid is provided with vertical flue, catalyst layer is provided with reactor；Ammonia-spraying grid division has more sub-regions, and each ammonia subregion that sprays is provided with a butterfly valve, for carrying out quantifying regulation to ammonia spraying amount, on catalyst layer the corresponding division in the square section region corresponding with ammonia-spraying grid subregion have more sub-regions.The utility model improves the ammonia nitrogen skewness phenomenon of square section on catalyst, improves the denitration efficiency of denitrification apparatus, reduces the escaping of ammonia rate of denitrification apparatus.
Description
Technical field
The utility model belongs to coal-burning boiler technical field of air pollution control, more particularly to a kind of SCR
Denitrification apparatus.
Background technology
Nitrogen oxides is one of generally acknowledged Air Pollutants in the whole world, and thermal power plant, Metallurgical Factory, chemical plant etc. are solid
Determine the amount of nitrogen oxides that occurring source is discharged accounts for anthropogenic discharge's amount more than 90%, a large amount of discharges of nitrogen oxides are to whole raw
State system and the life and health of the mankind cause huge threat.Selective catalytic reduction is nitrogen in current removing flue gas
Oxide is most effective, most widely used technology.
Asymmetric flaring, the flue of large-sized station boiler SCR reactor inlets are turned, reactor top turning section is dashed forward
The structural factors such as change are to cause the uneven major reason with ammonia nitrogen concentration deviation of flue gas flow field, and then add the escaping of ammonia rate, are dropped
Low denitration efficiency, is further improved.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of selective catalytic reduction denitration device,
To improve denitration efficiency, the escaping of ammonia rate is reduced.
The utility model provides a kind of selective catalytic reduction denitration device, including boiler economizer outlet, import cigarette
Road, reactor and exhaust pass, boiler economizer outlet are connected with inlet flue duct, the upper end connection of inlet flue duct and reactor,
The lower end connection outlet flue of reactor；Inlet flue duct includes bending flue and vertical flue, bends in flue and is provided with deflector,
Ammonia-spraying grid is provided with vertical flue, catalyst layer is provided with reactor；Ammonia-spraying grid division has more sub-regions, each sub-district
Domain is as a spray ammonia subregion, and each ammonia subregion that sprays is provided with a butterfly valve, for carrying out quantitative regulation to ammonia spraying amount, in catalyst
The corresponding division in the square section region corresponding with ammonia-spraying grid subregion has more sub-regions on layer.
Further, bending flue includes the first bending flue and the second bending flue, first bending flue one end connection
Boiler economizer exports, and the other end connects one end of vertical flue, and the other end connection second of vertical flue bends the one of flue
End, the upper end of the other end coupled reaction device of the second bending flue.
Further, the first deflector and the second deflector are respectively equipped with the first bending flue and the second bending flue,
First deflector and the second deflector are separated by composition, radian direction and the flow of flue gas direction one of arc by multiple arcs plate
Cause.
Further, ammonia-spraying grid is horizontally disposed in the middle part of vertical flue.
Further, catalyst layer is horizontally disposed in reactor, and parallel arrangement has three layers of catalyst layer in reactor.
Further, exhaust pass includes the 3rd bending flue, the lower end connection of the 3rd bending flue and reactor.
By such scheme, by selective catalytic reduction denitration device, ammonia-spraying grid division there are into more sub-regions,
Each spray ammonia subregion is provided with a butterfly valve, for carrying out quantitative regulation, while square section and spray on catalyst layer to ammonia spraying amount
The more sub-regions of the corresponding region division of ammonia grid subregion, and deflector is set in bending flue, improve on catalyst
The ammonia nitrogen skewness phenomenon and flue turning flue gas flow field non-uniform phenomenon of square section, improve the denitration effect of denitrification apparatus
Rate, reduce the escaping of ammonia rate of denitrification apparatus.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model selective catalytic reduction denitration device.
Label in figure：
1- boiler economizers export；2- first bends flue；The vertical flues of 3-；4- second bends flue；5- reactors；6-
3rd bending flue；The deflectors of 21- first；31- ammonia-spraying grids；The deflectors of 41- second；51- catalyst layers.
Embodiment
Join shown in Fig. 1, the present embodiment additionally provides a kind of selective catalytic reduction denitration device, including boiler economizer goes out
Mouth 1, inlet flue duct, reactor 5 and exhaust pass, boiler economizer outlet 1 are connected with inlet flue duct, inlet flue duct and reactor
5 upper end connection, the lower end connection outlet flue of reactor 5；Inlet flue duct includes bending flue and vertical flue 3, bends cigarette
Deflector is provided with road, ammonia-spraying grid 31 is provided with vertical flue 3, catalyst layer 51 is provided with reactor 5；Ammonia-spraying grid 31 is drawn
Dividing has more sub-regions, and per sub-regions as a spray ammonia subregion, each ammonia subregion that sprays is provided with a butterfly valve, for spray ammonia
Amount carries out quantitative regulation, on catalyst layer 5 the corresponding division in the square section region corresponding with ammonia-spraying grid subregion have multiple
Subregion.
In the present embodiment, bending flue includes the first bending bending flue 4 of flue 2 and second, the first bending flue 2 one
End connection boiler economizer outlet 1, the other end connect one end of vertical flue 3, the bending of other end connection second of vertical flue 3
One end of flue 4, the upper end of the other end coupled reaction device 5 of the second bending flue 4.
In the present embodiment, the first bending flue 2 and second, which is bent in flue 4, is respectively equipped with the first deflector 21 and second
Deflector 41, the first deflector 21 and the second deflector 41 are separated by composition by multiple arcs plate, the radian direction of arc with
Flow of flue gas direction is consistent, is advantageous to water conservancy diversion, ensures that flue gas is smooth in flue is bent and equably flows.
In the present embodiment, ammonia-spraying grid 31 is horizontally disposed in the middle part of vertical flue 3.
In the present embodiment, catalyst layer 51 is horizontally disposed in reactor 5, and parallel arrangement has three layers to urge in reactor 5
Agent layer 51.
In the present embodiment, exhaust pass includes the 3rd bending flue 6, and the lower end of the 3rd bending flue 6 and reactor 5 connects
Connect.
The denitrification apparatus of the present embodiment is provided with one by the way that ammonia-spraying grid division is had into more sub-regions, in each spray ammonia subregion
Individual butterfly valve, for carrying out quantitative regulation to ammonia spraying amount, while square section is corresponding with ammonia-spraying grid subregion on catalyst layer
The more sub-regions of region division, and bending flue set deflector, improve square section on catalyst ammonia nitrogen distribution not
Equal phenomenon and flue turning flue gas flow field non-uniform phenomenon, improve the denitration efficiency of denitrification apparatus, reduce denitrification apparatus
The escaping of ammonia rate.
Described above is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that
For those skilled in the art, on the premise of the utility model technical principle is not departed from, can also do
Go out some improvement and modification, these improvement and modification also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of selective catalytic reduction denitration device, it is characterised in that including boiler economizer outlet, inlet flue duct, reaction
Device and exhaust pass, the boiler economizer outlet are connected with inlet flue duct, the upper end of the inlet flue duct and the reactor
Connection, the lower end of the reactor connect the exhaust pass；The inlet flue duct includes bending flue and vertical flue, described
Deflector is provided with bending flue, ammonia-spraying grid is provided with the vertical flue, catalyst layer is provided with the reactor；It is described
Ammonia-spraying grid division has more sub-regions, and a butterfly valve is provided with as a spray ammonia subregion, each ammonia subregion that sprays per sub-regions,
For carrying out quantitative regulation to ammonia spraying amount, the square section region corresponding with ammonia-spraying grid subregion is corresponding on catalyst layer draws
Dividing has more sub-regions.
2. selective catalytic reduction denitration device according to claim 1, it is characterised in that the bending flue includes the
One bending flue and the second bending flue, described first bending flue one end connect the boiler economizer outlet, and the other end connects
Connect one end of the vertical flue, one end of other end connection the second bending flue of the vertical flue, described second
The other end for bending flue connects the upper end of the reactor.
3. selective catalytic reduction denitration device according to claim 2, it is characterised in that it is described first bending flue and
The first deflector and the second deflector are respectively equipped with second bending flue, first deflector and the second deflector are by more
Individual arc is separated by composition, and the radian direction of the arc is consistent with flow of flue gas direction.
4. selective catalytic reduction denitration device according to claim 3, it is characterised in that the horizontal cloth of ammonia-spraying grid
It is placed in the middle part of the vertical flue.
5. selective catalytic reduction denitration device according to claim 4, it is characterised in that the catalyst layer is described
Horizontally disposed in reactor, parallel arrangement has three layers of catalyst layer in the reactor.
6. selective catalytic reduction denitration device according to claim 5, it is characterised in that the exhaust pass includes the
Three bending flues, the 3rd bending flue are connected with the lower end of the reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810410.1U CN207042258U (en) | 2017-07-06 | 2017-07-06 | Selective catalytic reduction denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810410.1U CN207042258U (en) | 2017-07-06 | 2017-07-06 | Selective catalytic reduction denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207042258U true CN207042258U (en) | 2018-02-27 |
Family
ID=61494417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720810410.1U Active CN207042258U (en) | 2017-07-06 | 2017-07-06 | Selective catalytic reduction denitration device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207042258U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107349786A (en) * | 2017-07-06 | 2017-11-17 | 大唐东北电力试验研究所有限公司 | Selective catalytic reduction denitration device and its spray ammonia optimization method |
| CN108786460A (en) * | 2018-08-09 | 2018-11-13 | 国电龙源节能技术有限公司 | Coal-burning power plant's denitration ammonia-gas spraying device flow fieldoptimization system |
| CN112748639A (en) * | 2019-10-31 | 2021-05-04 | 沈阳芯源微电子设备股份有限公司 | FFU rectifying plate with airflow partition regulation and control function and glue coating process for adjusting glue shape |
-
2017
- 2017-07-06 CN CN201720810410.1U patent/CN207042258U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107349786A (en) * | 2017-07-06 | 2017-11-17 | 大唐东北电力试验研究所有限公司 | Selective catalytic reduction denitration device and its spray ammonia optimization method |
| CN108786460A (en) * | 2018-08-09 | 2018-11-13 | 国电龙源节能技术有限公司 | Coal-burning power plant's denitration ammonia-gas spraying device flow fieldoptimization system |
| CN112748639A (en) * | 2019-10-31 | 2021-05-04 | 沈阳芯源微电子设备股份有限公司 | FFU rectifying plate with airflow partition regulation and control function and glue coating process for adjusting glue shape |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Patentee after: Datang northeast electric power test and Research Institute Co., Ltd. Address before: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Patentee before: DATANG NORTHEAST ELECTRIC POWER TEST RESEARCH INSTITUTE CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |