CN110124514A - A kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration - Google Patents
A kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration Download PDFInfo
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- CN110124514A CN110124514A CN201910479549.6A CN201910479549A CN110124514A CN 110124514 A CN110124514 A CN 110124514A CN 201910479549 A CN201910479549 A CN 201910479549A CN 110124514 A CN110124514 A CN 110124514A
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- jet pipe
- flue
- ammonia
- blockage
- header
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention proposes a kind of dedicated upstream injection formula ammonia-spraying grids of Novel anti-blockage SCR denitration, including flue, the flue is externally provided with ammonia supervisor, the jet pipe of several left and right extension is successively equidistantly communicated on the ammonia supervisor from front to back, several mounting holes being extend into flue for jet pipe are offered on the flue right side wall, and mounting hole is externally provided with mounting flange, the jet pipe is extend into flue from mounting hole, and the right part of jet pipe corresponds to mounting flange equipped with nozzle flange disk, and nozzle flange disk is fixed on mounting flange by screw bolt and nut, the inside of the flue left side wall is equipped with the Fixing clamp-seat being caught in for jet pipe left end, several spray heads are equidistantly equipped with along axial direction on the position that the jet pipe is located in flue, the jet pipe support bridge that left and right extends is equipped with inside the flue.Greatly save flue gas and ammonia incorporation time, can the installment work in short distance flue, satisfaction is contacted with flue gas adverse current sprays the entire flue of ammonia covering simultaneously.
Description
Technical field
The present invention relates to fume treatment auxiliary technical fields, and in particular to a kind of dedicated adverse current of Novel anti-blockage SCR denitration
Injecting type ammonia-spraying grid.
Background technique
In common SCR denitration process, each company can consider that spraying ammonia in some Position Design of reactor inlet flue sets
It is standby, to guarantee the NH in SCR reactor inlet flue gas3/NOxIt is evenly distributed, is conducive to SCR catalyst in reactor and cigarette in this way
Gas is reacted, and higher denitration efficiency is kept.
Spray ammonia equipment is commonly designed on the vertical pipe between flue gas equipment and SCR reactor, high by steelframe structure
This segment pipe of the influence of degree is generally all shorter, also to guarantee there are enough uniform mixed effects in so short pipeline, sprays
The design of ammonia equipment is just abnormal important.Several spray ammonia equipment common at present have following several combinations:
(1) double-current spray gun body+pipe-line mixer
(2) ammonia evaporation mixer/pyrolysis oven+ammonia-spraying grid
The domestic garbage burning factory application of first kind combination is not extensive, mainly there is certain requirement to Gas Parameters, when
Pipe-line mixer size is very big when exhaust gas volumn is larger, has higher requirement to in-site installation condition, while reducing agent is logical
It crosses after spray gun is atomized in direct-injection pipeline, reducing agent gasification needs certain temperature, and such combination can only use Ammonia reducing agent, cannot
Denitration (500 DEG C of urea pyrolysis temperature, frequently with independent pyrolysis oven) are carried out using carbamide reducing agent
The combination of second class is at home using more, after Ammonia or carbamide reducing agent are prepared into ammonia in respective preparation system
It is sufficiently mixed into ammonia-spraying grid into flue, when largely reducing ammonia by this equipment and being mixed in pipeline with flue gas
Between, to adapt to more extreme installation environment.
Ammonia-spraying grid is mainly reverse-flow according to spray ammonia flow direction, although conventional counter-current formula can more reinforce mixed effect, holds
Easily there is following technical problem: 1, being contacted due to nozzle with flue gas adverse current forward direction, nozzle wear is serious, a period of time nozzle modification
Cause ammonia spraying amount deviation occur, when it is damaged to a certain extent when just need integral replacing；2, not easy to disassemble after damaging to be safeguarded；
3, conventional spout is the aperture of branch pipe outer wall, and nozzle is not wear-resisting.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, especially innovatively propose a kind of novel anti-
The dedicated upstream injection formula ammonia-spraying grid of SCR denitration is blocked, to reduce the abrasion of nozzle, ammonia is improved and mixes with flue gas efficiency.
In order to realize above-mentioned purpose of the invention, the present invention provides a kind of dedicated adverse current sprays of Novel anti-blockage SCR denitration
Formula ammonia-spraying grid, including flue are penetrated, the flue is externally provided with ammonia supervisor, and the ammonia is responsible for successively equidistant from front to back
It is communicated with the jet pipe of several left and right extension, offers several peaces being extend into flue for jet pipe on the flue right side wall
Hole is filled, and mounting hole is externally provided with mounting flange, the jet pipe is extend into flue from mounting hole, and the corresponding peace of right part of jet pipe
It fills ring flange and is equipped with nozzle flange disk, and nozzle flange disk is fixed on mounting flange by screw bolt and nut, the spray
Pipe, which is located on the position in flue, is equidistantly equipped with two column spray heads along axial, and two column spray heads are located at the front and back of the jet pipe upper half
Two sides, and the angle β between the center line of two column spray heads is less than 180 °；
Vertical center line along jet pipe cross section of preceding next two columns spray head positioned at the jet pipe at middle part is symmetrical arranged, and is located at
The angle β of two column spray heads of the jet pipe in portion is greater than 90 ° less than 170 °.
Ammonia supervisor guides spray head into through jet pipe for providing the pressure of ammonia ejection, is ejected into flue from spray head.Peace
Dress ring flange and nozzle flange disk are attached by screw bolt and nut for fixing jet pipe and are easily installed and dismantle.It is equipped with
Two column spray heads and the front and rear sides for being located at jet pipe can reduce dead angle, improve the exposure level of ammonia and flue gas.In being located at
The angle of next two columns spray head injection ammonia is consistent before the jet pipe in portion, and can increase the range of jet pipe injection as far as possible.
In above scheme: the angle β of two column spray heads is equal to 90 ° on the most jet pipe of the jet pipe of front side and most rear side, wherein
A column spray head on the most jet pipe of front side by front side setting is located on the jet pipe by the top of a column spray head of rear side setting；
A column spray head on the most jet pipe of rear side by front side setting is located on the jet pipe by a column spray head of rear side setting
Lower section.
It avoids being located at the most spray head of front side and most rear side to be ejected on the front-rear side walls of flue.
In above scheme: further including header, two adjacent jet pipes are connected with the ammonia mouth that goes out of the same header, described
Ammon entry hole is offered on header, on the ammon entry hole of header be equipped with header ring flange, the header by header ring flange with
The ring flange gone out on ammonia mouth on ammonia supervisor is connected.It can reduce and be responsible for upper aperture in ammonia, improve the support of ammonia supervisor
Intensity.
In above scheme: the inside of the flue left side wall is equipped with the Fixing clamp-seat being caught in for jet pipe left end.Fixing clamp-seat
For fixing the left end of jet pipe, jet pipe left end support is given, the stability of jet pipe is improved.
In above scheme: being equipped with the jet pipe support bridge that left and right extends inside the flue.Jet pipe support bridge is for guiding spray
Pipe is mobile to be caught in Fixing clamp-seat to Fixing clamp-seat convenient for jet pipe left end, while being also used for support jet pipe.
In above scheme: the jet pipe support bridge is V-type.Improve the stability of jet pipe.
In above scheme: the spray head is made of wear-resistant material.The service life of spray head is improved, abrasion is reduced, is reduced
Maintenance workload and cost.
In above scheme: the aperture of the mounting hole, which meets to allow, two jet pipes being connected on the same header while wearing
It crosses, and two be connected on the same header jet pipe is also connected on the same nozzle flange disk.Convenient for being put into jet pipe and peace
Dress.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: greatling save flue gas and ammonia
Incorporation time, can the installment work in short distance flue；Certain angle is designed between spray head and spray head, satisfaction connects with flue gas adverse current
It touches while spraying ammonia and cover entire flue；Service life of equipment can be extended by reinforcing nozzle design；Quick detachable design manages maintenance
It manages simpler.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the cross-sectional view in Fig. 1 at E-E；
Fig. 3 is the enlarged diagram in Fig. 2 at A；
Fig. 4 is the enlarged diagram in Fig. 2 at B；
Fig. 5 is the sectional view in Fig. 1 at C-C；
Fig. 6 is the sectional view in Fig. 1 at D-D.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in figs 1 to 6, the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration, including flue 1,
The flue 1 is externally provided with ammonia supervisor, is successively equidistantly communicated with the extension of several left and right from front to back on the ammonia supervisor
Jet pipe 2, offer several mounting holes 11 being extend into flue 1 for jet pipe 2, and mounting hole on 1 right side wall of flue
11 are externally provided with mounting flange 42, and the jet pipe 2 is extend into flue 1 from mounting hole 11, and the right part of jet pipe 2 corresponds to Method for Installation
Blue disk 42 is equipped with nozzle flange disk 41, and nozzle flange disk 41 is fixed on mounting flange 42 by screw bolt and nut, institute
The inside for stating 1 left side wall of flue is equipped with the Fixing clamp-seat 51 being caught in for 2 left end of jet pipe, and the jet pipe 2 is located at the position in flue 1
On be equidistantly equipped with several spray heads 21 along axial direction, the spray head 21 is made of wear-resistant material.A left side is equipped with inside the flue 1
The jet pipe support bridge 52 of right extension, the jet pipe support bridge 52 is V-type, and the left end of jet pipe support bridge 52 extends close to fixation
The right end of deck 51, jet pipe support bridge 52 is fixed on the right side wall of flue 1.
It further include header 3, the jet pipe 2 of adjacent two is connected with the ammonia mouth that goes out of the same header 3, on the header 3
Offer ammon entry hole, on the ammon entry hole of header 3 be equipped with header ring flange 31, the header 3 by header ring flange 31 with
The ring flange gone out on ammonia mouth on ammonia supervisor is connected.
And the aperture of the mounting hole 11 meet allow two jet pipes 2 being connected on the same header 3 also cross, and
Two jet pipes 2 being connected on the same header 3 are also connected on the same nozzle flange disk 41.
Two column spray heads 21 are equipped on the jet pipe 2, two column spray heads 21 are located at the front and rear sides of 2 upper half of jet pipe,
And two column spray head 21 center line between angle β less than 180 °.
Vertical center line of the preceding next two columns spray head 21 along 2 cross section of jet pipe positioned at the jet pipe 2 at middle part is symmetrical arranged, and position
It is greater than 90 ° less than 170 ° in the angle β of two column spray heads 21 of the jet pipe 2 at middle part.Spray head 21 on the jet pipe 2 at middle part is by spray
The horizontal center line of 2 cross section of pipe is arranged, and is located at 2 cross of center line and jet pipe of the preceding next two columns spray head 21 of the jet pipe 2 at middle part
The horizontal center line in section is in α angle.
The angle β of the most upper two column spray head 21 of jet pipe 2b of the jet pipe 2a of front side and most rear side is equal to 90 °, wherein most front side
Jet pipe 2a on by front side setting a column spray head 21 be located on the jet pipe by rear side be arranged a column spray head 21 top.Finally
A column spray head 21 on the jet pipe 2b of side by front side setting is located on the jet pipe by the lower section of a column spray head 21 of rear side setting.
The quiet ammonia supervisor of ammonia enters in header 3, is continued to run in jet pipe 2 by header 3, and spray from spray head 21
Out, into being mixed with flue gas in flue 1.Spray head 2 by being located at middle part can be as far as possible to the farther position of horizontal distance
Injection improves spray regime, reduces dead angle.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (8)
1. a kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration, it is characterised in that: described including flue (1)
Flue (1) is externally provided with ammonia supervisor, is successively equidistantly communicated with the extension of several left and right from front to back on the ammonia supervisor
Jet pipe (2) offers several mounting holes (11) being extend into flue (1) for jet pipe (2) on flue (1) right side wall,
And mounting hole (11) is externally provided with mounting flange (42), the jet pipe (2) extend into flue (1) from mounting hole (11), and sprays
The right part of pipe (2) corresponds to mounting flange (42) equipped with nozzle flange disk (41), and passes through screw bolt and nut for nozzle flange disk
(41) it is fixed on mounting flange (42), the jet pipe (2), which is located on the position in flue (1), is equidistantly equipped with two along axial
Column spray head (21), two column spray heads (21) are located at the front and rear sides of jet pipe (2) upper half, and the center line of two column spray heads (21)
Between angle β less than 180 °；
Positioned at middle part jet pipe (2) preceding next two columns spray head (21) along jet pipe (2) cross section vertical center line be symmetrical arranged, and
It is greater than 90 ° less than 170 ° positioned at the angle β of two column spray heads (21) of the jet pipe (2) at middle part.
2. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 1, feature exist
In: the angle β of two column spray heads (21) is equal to 90 ° on the most jet pipe (2b) of the jet pipe (2a) of front side and most rear side, wherein before most
A column spray head (21) on the jet pipe (2a) of side by front side setting is located on the jet pipe by a column spray head (21) of rear side setting
Top；
A column spray head (21) on the most jet pipe (2b) of rear side by front side setting is located at the column spray on the jet pipe by rear side setting
The lower section of head (21).
3. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 1, feature exist
In: it further include header (3), the jet pipe (2) of adjacent two is connected with the ammonia mouth that goes out of the same header (3), the header (3)
On offer ammon entry hole, on the ammon entry hole of header (3) be equipped with header ring flange (31), the header (3) pass through header method
The ring flange gone out on ammonia mouth that blue disk (31) is responsible for ammonia is connected.
4. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 2, feature exist
In: the inside of flue (1) left side wall is equipped with the Fixing clamp-seat (51) being caught in for jet pipe (2) left end.
5. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 4, feature exist
In: the jet pipe support bridge (52) of left and right extension is equipped with inside the flue (1).
6. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 5, feature exist
In: the jet pipe support bridge (52) is V-type.
7. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 1, feature exist
In: the spray head (21) is made of wear-resistant material.
8. the dedicated upstream injection formula ammonia-spraying grid of a kind of Novel anti-blockage SCR denitration according to claim 2, feature exist
Meeting in the aperture of: the mounting hole (11) allows two jet pipes (2) being connected on the same header (3) also cross and even
Two jet pipes (2) connect on the same header (3) are also connected on the same nozzle flange disk (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479549.6A CN110124514A (en) | 2019-06-04 | 2019-06-04 | A kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479549.6A CN110124514A (en) | 2019-06-04 | 2019-06-04 | A kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration |
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| Publication Number | Publication Date |
|---|---|
| CN110124514A true CN110124514A (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910479549.6A Pending CN110124514A (en) | 2019-06-04 | 2019-06-04 | A kind of dedicated upstream injection formula ammonia-spraying grid of Novel anti-blockage SCR denitration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085094A (en) * | 2020-02-12 | 2020-05-01 | 福建龙净脱硫脱硝工程有限公司 | Injection device |
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| CN202410519U (en) * | 2011-12-15 | 2012-09-05 | 青岛华拓科技股份有限公司 | Flue gas denitration and ammonia spray grating |
| CN203044243U (en) * | 2012-12-17 | 2013-07-10 | 浙江天地环保工程有限公司 | Smoke denitration ammonia spraying device |
| CN103480254A (en) * | 2013-08-12 | 2014-01-01 | 北京博智伟德环保科技有限公司 | Anti-blocking ammonia spraying grid for SCR (Selective Catalytic Reduction) denitration system |
| CN203525566U (en) * | 2013-08-12 | 2014-04-09 | 北京博智伟德环保科技有限公司 | Anti-blocking type ammonia spraying grid for SCR (Selective Catalytic Reduction) denitration system |
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| CN206746285U (en) * | 2017-02-16 | 2017-12-15 | 中国大唐集团科技工程有限公司 | A kind of new ammonia-spraying grid for SCR denitration system |
| CN207042221U (en) * | 2017-06-12 | 2018-02-27 | 盐城诚达环保工程有限公司 | Denitrating flue gas ammonia-spraying grid device |
| CN108786458A (en) * | 2018-07-10 | 2018-11-13 | 上海电力学院 | A kind of SCR denitration is anti-blocking to put forward effect system |
| CN210251872U (en) * | 2019-06-04 | 2020-04-07 | 上海众仕环境科技股份有限公司 | Novel anti-blocking special countercurrent injection type ammonia injection grid for SCR denitration |
-
2019
- 2019-06-04 CN CN201910479549.6A patent/CN110124514A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202410519U (en) * | 2011-12-15 | 2012-09-05 | 青岛华拓科技股份有限公司 | Flue gas denitration and ammonia spray grating |
| CN203044243U (en) * | 2012-12-17 | 2013-07-10 | 浙江天地环保工程有限公司 | Smoke denitration ammonia spraying device |
| CN103480254A (en) * | 2013-08-12 | 2014-01-01 | 北京博智伟德环保科技有限公司 | Anti-blocking ammonia spraying grid for SCR (Selective Catalytic Reduction) denitration system |
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| CN206027447U (en) * | 2016-08-30 | 2017-03-22 | 国源设计院有限公司 | Denitration ammonia injection grid equipment |
| CN206746285U (en) * | 2017-02-16 | 2017-12-15 | 中国大唐集团科技工程有限公司 | A kind of new ammonia-spraying grid for SCR denitration system |
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| CN108786458A (en) * | 2018-07-10 | 2018-11-13 | 上海电力学院 | A kind of SCR denitration is anti-blocking to put forward effect system |
| CN210251872U (en) * | 2019-06-04 | 2020-04-07 | 上海众仕环境科技股份有限公司 | Novel anti-blocking special countercurrent injection type ammonia injection grid for SCR denitration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085094A (en) * | 2020-02-12 | 2020-05-01 | 福建龙净脱硫脱硝工程有限公司 | Injection device |
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