CN206897178U - A kind of SCR reactors of new combination type flue - Google Patents
A kind of SCR reactors of new combination type flue Download PDFInfo
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- CN206897178U CN206897178U CN201720473907.9U CN201720473907U CN206897178U CN 206897178 U CN206897178 U CN 206897178U CN 201720473907 U CN201720473907 U CN 201720473907U CN 206897178 U CN206897178 U CN 206897178U
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- flue
- scr reactors
- combination type
- new combination
- scr
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Abstract
The utility model provides a kind of SCR reactors of new combination type flue, including SCR reactors and the flue being suspended on SCR reactors, the flue includes vertical section and horizontal segment, the top of vertical section includes a protuberance protruded to the left, the left end of horizontal segment is connected with vertical section, left end bottom connects a horizontal baffle, and right-hand member is connected with SCR reactor inlets, and at least honeycomb screen that rectification is carried out to flue gas is provided with horizontal segment.This SCR reactors improve flue structure, extend the bottom horizontal flow sheet distance that flue gas enters before SCR reactors, increase fairing, bulky grain flue dust is effectively spread, makes it even into SCR reactors.
Description
Technical field
It the utility model is related to thermal power plant's denitration field, and in particular to a kind of SCR reactors of new combination type flue.
Background technology
Thermal power plant is generated electricity by combustibles such as burning coals, nitrogen oxides is contained in caused flue gas, directly
Being discharged into air to pollute, therefore needs to handle nitrogen oxides, generally use SCR (SCR) skill
Art, flue gas is passed into SCR reactors and carries out denitration reaction.
At present, SCR reactors and its flue use combination type, traditional structure as shown in figure 1, flue 02 to be suspended on SCR anti-
Answer on device 01.It is disadvantageous in that flue gas rises along the vertical section of flue 02, rapidly switchs to horizontal direction to top, due to
Horizontal segment is shorter, is unfavorable for bulky grain flue dust in flue gas and spreads, and the device for helping diffusion is not present again, big of high concentration
Grain flue dust enter SCR 01 entrances of reactor when skewness, because weight is larger, can quickly sink, in the catalyst before
Portion assembles, as shown in phantom in Figure 1 (dotted line represents the uniform situation and flow path of bulky grain flue dust), before causing in catalyst
Portion flow field is uneven, is unfavorable for ammonia and flue gas is uniformly distributed and fully contacted.
Utility model content
To overcome above-mentioned deficiency, the utility model provides a kind of SCR reactors of new combination type flue, improves flue knot
Structure, extend the bottom horizontal flow sheet distance that flue gas enters before SCR reactors, increase fairing, bulky grain flue dust is carried out effective
Diffusion, makes it even into SCR reactors.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：
A kind of SCR reactors of new combination type flue, including SCR reactors and the flue that is suspended on SCR reactors,
The flue includes vertical section and horizontal segment, and the top of vertical section includes a protuberance protruded to the left, and the left end of horizontal segment is with erecting
Straight section is connected, and left end bottom connects a horizontal baffle, and right-hand member is connected with SCR reactor inlets, is provided with horizontal segment to flue gas
Carry out an at least honeycomb screen for rectification.
Further, the width of protuberance is that lower section is connected at least 2 times of flue width, and the width refers to a left side for flue
The horizontal range of right two side.
Further, the length of baffle plate is equal to stand out of the protuberance with the flue that is connected below.
Further, honeycomb screen is vertical or is in tilted layout.
Further, the grid size of honeycomb screen is descending from top to bottom.
Further, honeycomb screen is formed or is integrally formed by horizontal steel plate and vertical steel plate weld.
Further, the horizontal steel plate of honeycomb screen is vertical with vertical steel plate.
Further, honeycomb screen is 2 or 3.
Further, baffle plate and honeycomb screen weld or bolt connection is on flue.
The beneficial effects of the utility model are：
The protuberance of flue vertical section of the present utility model protrudes to the left, installs baffle plate additional in air flue horizontal section, so just prolongs
Horizontal segment distance has been grown, that is, has extended the distance that flue gas enters SCR reactor catalysis oxidant layer, flue gas mixes more in flow process
Add fully, bulky grain flue dust is not easy to assemble；Some honeycomb screens are installed in air flue horizontal section, under big on the grid of honeycomb screen
Small, the flue gas resistance in top portion is slightly smaller than bottom, and such top flow of flue gas is very fast, be advantageous to bulky grain flue dust flow to it is farther away from
From sharing the flow of bottom flue gas, distribution is more uniform, improves flow of flue gas situation in SCR reactors.
Brief description of the drawings
Fig. 1 is the SCR reactor schematic diagrames of traditional combination type flue.
In figure：01-SCR reactors；02- flues.
Fig. 2 is the SCR reactor schematic diagrames of new combination type flue.
In figure：11-SCR reactors；12- flues；13- baffle plates；14- honeycomb screens.
Fig. 3 is honeycomb screen schematic diagram.
Embodiment
To enable features described above and advantage of the present utility model to become apparent, special embodiment below, and appended by cooperation
Figure is described in detail below.
The present embodiment provides a kind of SCR reactors of new combination type flue, as shown in Fig. 2 including the He of SCR reactors 11
The flue 12 being suspended on SCR reactors.Flue 12 divides to be connected for vertical section and horizontal segment, the left end of horizontal segment with vertical section,
Right-hand member is connected with the entrance of SCR reactors 11.The top of the vertical section of flue 12 is the protuberance protruded to the left, and the width of protuberance is
Connected 2 times of the flue width in lower section, width refers to the distance between side wall of left and right two of vertical section, it is noted that this is only
A kind of preferred dimensions ratio, not to be limited.
Because the protuberance width of the vertical section of flue 12 is big, consequently, it is possible to by installing a water in horizontal segment left end bottom
Flat baffle plate 13, the length of the horizontal segment of flue 12 can be increased.The length of baffle plate 13 becomes with protuberance width, both differences and protrusion
The width of adjacent flue is equal below portion.Protuberance collectively forms a concave structure with baffle plate 13, increases compared to traditional flue
Added number of turns twice, i.e. flue gas flow up (see in figure to upward arrow) to protuberance when transfer to flow to the left, then turn
Flow up, enter back into horizontal segment, add turbulence effects.
Two honeycomb screens 14 are installed in the horizontal segment of flue 12, are in tilted layout, to carry out rectification to flue gas.It need to point out
Be, the number and arrangement of honeycomb screen 14 not to be limited, number to be at least one, most preferably two or three, can vertical cloth
Put or be in tilted layout, be decided according to the actual requirements.Honeycomb screen 14 is non-homogeneous honeycomb screen, and grid is up big and down small, structure such as Fig. 3 institutes
Show.Honeycomb screen 14 is welded by vertical steel plate with horizontal steel plate, or is directly integrally formed, and forms multiple grids, these grid
The size (long × wide) of lattice is descending from top to bottom, and the specific size of grid can be provided according to actual conditions by simulation.It is whole
After stream grid 14 are arranged in the horizontal segment of flue 12, because top grid is more than lower section, the resistance ratios bottom of top flue gas it is smaller, this
Sample can accelerate top flue gas flow rate, and contained bulky grain flue dust can more flow to the right of SCR reactors 11 at a distance, share
The bulky grain fume amount of bottom flue gas, so that bulky grain flue dust is uniformly distributed, and is uniformly flowed into SCR reactors 11, in Fig. 2
Shown in dotted line, uniform improvement situation compared to Figure 1 can be seen that.
In summary, the utility model sets up baffle plate and honeycomb screen, can improve flue gas especially by changing flue shape
It is the uniform situation of bulky grain flue dust so that even flow field near catalyst, be more beneficial for ammonia and flue gas is uniformly distributed and filled
Divide mixing.
Claims (9)
1. a kind of SCR reactors of new combination type flue, including SCR reactors and the flue being suspended on SCR reactors, should
Flue includes vertical section and horizontal segment, and the top of vertical section includes a protuberance protruded to the left, the left end of horizontal segment with it is vertical
Section connection, left end bottom connect a horizontal baffle, and right-hand member is connected with SCR reactor inlets, are provided with to enter flue gas on horizontal segment
An at least honeycomb screen for row rectification.
A kind of 2. SCR reactors of new combination type flue according to claim 1, it is characterised in that the width of protuberance
Degree is at least 2 times of the connected flue width in lower section.
A kind of 3. SCR reactors of new combination type flue according to claim 1, it is characterised in that the length of baffle plate
Stand out equal to protuberance with the flue that is connected below.
4. the SCR reactors of a kind of new combination type flue according to claim 1, it is characterised in that honeycomb screen is vertical
Or it is in tilted layout.
A kind of 5. SCR reactors of new combination type flue according to claim 1, it is characterised in that the grid of honeycomb screen
Lattice size is descending from top to bottom.
6. the SCR reactors of a kind of new combination type flue according to claim 1, it is characterised in that honeycomb screen is by horizontal stroke
To steel plate and vertical steel plate weld composition or it is integrally formed.
A kind of 7. SCR reactors of new combination type flue according to claim 6, it is characterised in that the horizontal stroke of honeycomb screen
It is vertical with vertical steel plate to steel plate.
A kind of 8. SCR reactors of new combination type flue according to claim 1, it is characterised in that honeycomb screen be 2 or
3.
9. the SCR reactors of a kind of new combination type flue according to claim 1, it is characterised in that baffle plate and rectification
Grid weld or bolt connection is on flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720473907.9U CN206897178U (en) | 2017-05-02 | 2017-05-02 | A kind of SCR reactors of new combination type flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720473907.9U CN206897178U (en) | 2017-05-02 | 2017-05-02 | A kind of SCR reactors of new combination type flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206897178U true CN206897178U (en) | 2018-01-19 |
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ID=61291633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720473907.9U Expired - Fee Related CN206897178U (en) | 2017-05-02 | 2017-05-02 | A kind of SCR reactors of new combination type flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206897178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404403A (en) * | 2019-08-08 | 2019-11-05 | 上海灿州环境工程有限公司 | SCR reactor and production technology |
-
2017
- 2017-05-02 CN CN201720473907.9U patent/CN206897178U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404403A (en) * | 2019-08-08 | 2019-11-05 | 上海灿州环境工程有限公司 | SCR reactor and production technology |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |