CN208839353U - A kind of ammonia air mixing device for flue gas denitrification system - Google Patents
A kind of ammonia air mixing device for flue gas denitrification system Download PDFInfo
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- CN208839353U CN208839353U CN201821301300.3U CN201821301300U CN208839353U CN 208839353 U CN208839353 U CN 208839353U CN 201821301300 U CN201821301300 U CN 201821301300U CN 208839353 U CN208839353 U CN 208839353U
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Abstract
The utility model discloses a kind of ammonia air mixing devices for flue gas denitrification system, including mixing chamber (1), ammonia jet pipe (2), the ammonia jet pipe (2) passes through the mixing chamber (1) front outer wall, its spout center of circle is arranged on the axis of the mixing chamber (1), ammonia jet pipe (2) nozzle is provided with ammonia nozzle (4), ammonia nozzle (4) axis is overlapped with the mixing chamber (1) axis, several first spray-holes (41) are provided on the ammonia nozzle tube wall, mixing chamber (1) rear inside wall is provided with several spoilers (3), several described spoilers (3) are located at the ammonia nozzle (4) below.For the utility model in the case where not increasing mixer length and not needing additionaling power, the composite rate of ammonia and air after guaranteeing dilution reaches 90%-98%, and mixed effect is significant, while having many advantages, such as that structure is simple, easy to make, simple to install.
Description
Technical field
The utility model belongs to the mixing equipment and technology of flue gas denitrification system, especially a kind of ammonia air mixing dress
It sets.
Background technique
Flue gas nitrogen oxide emission reduction (abbreviation denitration) technology is to utilize amino-containing denitrification reducing agent, such as liquefied ammonia, urea
With the NO in flue gasxReduction reaction is carried out, by the NO and NO in flue gas2It is converted to N2And H2O.Its final principle is using various
Reducing agent (liquefied ammonia, ammonium hydroxide, urea etc.) ammonia (NH generated3) with flue gas in NOxThe reduction reaction of progress, to reach
The purpose of denitration.Its reaction equation are as follows: NO+NH3→N2+H20.At this stage, common two kinds of denitration technologies are in denitration technology
SNCR (selective non-catalytic reduction reaction) and SCR (selective catalytic reduction reaction), and SCR technology (selective catalytic reduction
Reaction) in, it generally selects ammonium hydroxide/liquefied ammonia/urea and is prepared into ammonia, then by gaseous mixture, the hot-air and ammonia after heating
Mixing, by ammonia be diluted to concentration not higher than 5% (volume fraction) ensure ammonia using safe, will eventually by ammonia-spraying grid
Ammonia air Mixture is uniformly fed into corresponding SCR reaction zone and carries out denitration reaction.
However the effect that existing mixer ammonia mixes with air is less desirable, it cannot be sufficiently mixed by ammonia and air
It closes uniformly, needs further to improve.
Utility model content
The utility model it is mixed the technical problem to be solved is that a kind of ammonia air for flue gas denitrification system is provided
Attach together and set, the ammonia air mixing device for flue gas denitrification system can in effective solution SCR denitration system ammonia it is empty
Non-uniform phenomenon after gas mixing.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of ammonia for flue gas denitrification system
Air mixing device, including mixing chamber 1, ammonia jet pipe 2, the ammonia jet pipe 2 pass through the 1 front outer wall of mixing chamber, extend to
Inside the mixing chamber 1, the spout center of circle is arranged on the axis of the mixing chamber 1, and 2 nozzle of ammonia jet pipe is provided with
Ammonia nozzle 4,4 axis of ammonia nozzle are overlapped with 1 axis of mixing chamber, are provided on the ammonia nozzle tube wall several
First spray-hole 41,1 rear inside wall of mixing chamber are provided with several spoilers 3, several described spoilers 3 are located at described
In gas flow paths after ammonia nozzle 4.
Further, the mixing chamber 1 is stainless steel jointless round steel pipe mixing chamber or stainless steel welded round steel pipe mixing chamber；
The ammonia jet pipe 2 is stainless steel jointless round steel pipe jet pipe, and the ammonia nozzle 4 is stainless steel jointless round steel pipe nozzle；It is described
Spoiler 3 is stainless steel plate spoiler.
Further, several first spray-holes 41 are uniformly distributed along 4 peripheral wall of ammonia nozzle and axis direction.
Further, the ammonia nozzle 4 is provided with spherical surface baffle, the ball close to the one end at 1 rear portion of mixing chamber
The second spray-hole 42 is additionally provided at the baffle center of face.
Further, the spoiler 3 is in half elliptic, and circular arc portion is contacted and fixed with the mixing chamber interior walls, directly
Line part is intersected with 1 axis of mixing chamber, several described spoilers 3 gas flow direction along the mixing chamber 1 tilts
Setting, several described spoilers 3 are with the angle for mixing chamber axis between 70 °~75 °.
Further, several described spoilers make to form curved gas in mixing chamber in shifting to install in mixing chamber
Flow path.
Further, 1 air inlet end of mixing chamber is provided with first flange 5, and ammonia air Mixture outlet end is set
It is equipped with second flange 6, the 2 ammonia arrival end of ammonia jet pipe is provided with third flange 7.
The beneficial effects of the utility model are: a kind of ammonia air for flue gas denitrification system described in the utility model
In mixing arrangement, the nozzle of the ammonia jet pipe is provided with ammonia nozzle, is provided with several first on the ammonia nozzle wall
Spray-hole, each first spray-hole can spray shallow bid ammonia air-flow, enable ammonia in a manner of draft from
All directions spray into the mixing room air, largely mix with the air for flowing into mixing chamber, in addition in the mixing
The muti-piece spoiler of indoor setting is not increasing the ammonia air mixer overall length and is not having the case where additionaling power
Under, the process of mixed gas is increased, and towards opposite, alternating inclinations setting the spoiler to the mixed gas flowed through
There is perturbation action, so that ammonia and air further mix, composite rate reaches 90%-98%.And it is described in the utility model
Ammonia air mixer also have many advantages, such as that structure is simple, easily manufactured, simple to install.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the A-A view of the utility model overall structure diagram；
Fig. 3 is ammonia nozzle enlarged diagram B-B view in the utility model；
Fig. 4 is ammonia nozzle enlarged diagram in the utility model；
Fig. 5 is ammonia nozzle enlarged diagram C-C view in the utility model；
Fig. 6 is spoiler schematic diagram in the utility model.
1, mixing chamber；2, ammonia jet pipe；3, spoiler；4, ammonia nozzle；5, first flange；6, second flange；7, third
Flange.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Please refer to attached drawing.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The revealed content of specification is not intended to limit the invention enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach
It obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "front", "rear", " centre " and other use
Language is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Referring to Figures 1 and 2, a kind of ammonia air mixing device for flue gas denitrification system of the utility model, including
Mixing chamber 1, ammonia jet pipe 2, the ammonia jet pipe 2 pass through the 1 front outer wall of mixing chamber, extend to inside the mixing chamber 1,
The spout center of circle is arranged on the axis of the mixing chamber 1, and 2 nozzle of ammonia jet pipe is provided with ammonia nozzle 4, the ammonia
4 axis of nozzle is overlapped with 1 axis of mixing chamber, and several first spray-holes 41 are provided on the ammonia nozzle tube wall, described
1 rear inside wall of mixing chamber is provided with several spoilers 3, several described spoilers 3 are located at the gas after the ammonia nozzle 4
On flow path.
The mixing chamber 1 is stainless steel jointless round steel pipe mixing chamber or stainless steel welded round steel pipe mixing chamber；The ammonia
Jet pipe 2 and the ammonia nozzle 4 are the production of stainless steel jointless round steel pipe；The spoiler 3 is stainless steel plate spoiler.
Referring to Fig. 3, Fig. 4 and Fig. 5, as a further improvement of the foregoing solution, several first injections described in this embodiment
Hole 41 is uniformly distributed along 4 peripheral wall of ammonia nozzle and axis direction.The size and quantity of first spray-hole 41 are according to ammonia
The flow velocity of gas and air determines that, due to the presence of first spray-hole 41, the ammonia for flowing into the ammonia jet pipe 2 can
Mixing chamber 1 is spurted into all directions in a manner of draft, so that ammonia and the air flowed through more fully mix.
The ammonia nozzle 4 is provided with spherical surface baffle, the spherical surface baffle center close to the one end at 1 rear portion of mixing chamber
Place is additionally provided with the second spray-hole 42.Second spray-hole 42 plays the role of dredging air-flow.
Referring to Fig. 2 and Fig. 6, as a further improvement of the foregoing solution, several spoilers 3 described in this embodiment are in half
Ellipse, circular arc portion are contacted and are fixed with the mixing chamber interior walls, and straight line portion intersects with 1 axis of mixing chamber, described
Several spoilers 3 gas flow direction along the mixing chamber 1 is obliquely installed, several described spoilers 3 are mixed with described
The angle of 1 axis of room is between 70 °~75 °；The size of the spoiler 3 and the 1 inner wall angle of mixing chamber will affect ammonia
The resistance of mixed effect and the gas flowing of air, when large, process of the mixed gas in mixing chamber 1 will increase, gas
What body mixed also can more evenly, but the time flowed through can increase resistance and also will increase；When smaller Shi Ze is on the contrary, mixed gas flows through
The time of mixing chamber 1 can shorten resistance and can reduce, but process can also reduce, and the uniform effect of gas mixing may reduce；?
In the angular range, it not only ensure that flow-disturbing acted on, but also reduce simulation model for mixing gases flows resistance as far as possible.
Several described spoilers make to form curved gas flow paths in mixing chamber in shifting to install in mixing chamber.
Referring to Fig.1,1 air inlet end of mixing chamber is provided with first flange 5, the setting of ammonia air Mixture outlet end
There is second flange 6, the 2 ammonia arrival end of ammonia jet pipe is provided with third flange 7, so that the ammonia air mixing device exists
Installation and removal in flue gas denitrification system are very convenient.
Finally, it is stated that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, to the greatest extent
Pipe is described the invention in detail referring to preferred embodiment, it should be appreciated by those of ordinary skill in the art that can be right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be contained
It covers in scope of the presently claimed invention.
Claims (7)
1. a kind of ammonia air mixing device for flue gas denitrification system, it is characterised in that: sprayed including mixing chamber (1), ammonia
It manages (2), the ammonia jet pipe (2) passes through the mixing chamber (1) outer wall and extends to the mixing chamber (1) inside, the ammonia jet pipe
(2) nozzle is provided with ammonia nozzle (4), and several first spray-holes (41) are provided on ammonia nozzle (4) tube wall, described
Mixing chamber (1) inner wall is provided with several spoilers (3), after several described spoilers (3) are set to the ammonia nozzle (4)
Gas flow paths on.
2. a kind of ammonia air mixing device for flue gas denitrification system according to claim 1, it is characterised in that: institute
Stating mixing chamber (1) is stainless steel jointless round steel pipe mixing chamber or stainless steel welded round steel pipe mixing chamber；The ammonia jet pipe (2) is
Stainless steel jointless round steel pipe jet pipe, the ammonia nozzle (4) are stainless steel jointless round steel pipe nozzle；The spoiler (3) is not
Become rusty steel plate spoiler.
3. a kind of ammonia air mixing device for flue gas denitrification system according to claim 1, it is characterised in that: institute
Several first spray-holes (41) are stated to be uniformly distributed along ammonia nozzle (4) peripheral wall and axis direction.
4. a kind of ammonia air mixing device for flue gas denitrification system according to claim 1 or 3, feature exist
In: the ammonia nozzle (4) is provided with spherical surface baffle, the spherical surface baffle center close to the one end at the mixing chamber (1) rear portion
Place is provided with the second spray-hole (42).
5. a kind of ammonia air mixing device for flue gas denitrification system according to claim 1, it is characterised in that: institute
Spoiler (3) are stated in half elliptic, circular arc portion is contacted and fixed with the mixing chamber (1) inner wall, and straight line portion is mixed with described
The intersection of room (1) axis is closed, several described spoilers (3) are obliquely installed along the mixing chamber (1) interior gas flow direction, described
The angle of several spoilers (3) and the mixing chamber (1) axis is between 70 °~75 °.
6. a kind of ammonia air mixing device for flue gas denitrification system according to claim 5, it is characterised in that: institute
It states several spoilers (3) to shift to install in mixing chamber (1), makes to form curved gas flow paths in mixing chamber.
7. a kind of ammonia air mixing device for flue gas denitrification system according to claim 1, it is characterised in that: institute
Mixing chamber (1) air inlet end to be stated to be provided with first flange (5), ammonia air Mixture outlet end is provided with second flange (6),
Ammonia jet pipe (2) the ammonia arrival end is provided with third flange (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821301300.3U CN208839353U (en) | 2018-08-13 | 2018-08-13 | A kind of ammonia air mixing device for flue gas denitrification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821301300.3U CN208839353U (en) | 2018-08-13 | 2018-08-13 | A kind of ammonia air mixing device for flue gas denitrification system |
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| CN208839353U true CN208839353U (en) | 2019-05-10 |
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| CN201821301300.3U Active CN208839353U (en) | 2018-08-13 | 2018-08-13 | A kind of ammonia air mixing device for flue gas denitrification system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296319A (en) * | 2019-07-24 | 2019-10-01 | 中国海洋石油集团有限公司 | A kind of LNG receiving station BOG electricity generation system |
| CN111097338A (en) * | 2018-10-29 | 2020-05-05 | 中国石油化工股份有限公司 | Liquid-solid radial moving bed reaction device |
| CN111558286A (en) * | 2020-05-12 | 2020-08-21 | 江苏峰峰鸿运环保科技发展有限公司 | SNCR-SCR combined denitration method and device |
| CN114073910A (en) * | 2021-11-19 | 2022-02-22 | 西安交通大学 | Methane/carbon dioxide photo-thermal coupling dry reforming three-section type gas mixer for three paths of fluids and use method |
| CN114450038A (en) * | 2020-02-28 | 2022-05-06 | 中物院成都科学技术发展中心 | Disinfection and sterilization system and disinfection and sterilization method |
| CN115069101A (en) * | 2021-03-12 | 2022-09-20 | 中国石油化工股份有限公司 | Gas-liquid mixer |
-
2018
- 2018-08-13 CN CN201821301300.3U patent/CN208839353U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097338A (en) * | 2018-10-29 | 2020-05-05 | 中国石油化工股份有限公司 | Liquid-solid radial moving bed reaction device |
| CN110296319A (en) * | 2019-07-24 | 2019-10-01 | 中国海洋石油集团有限公司 | A kind of LNG receiving station BOG electricity generation system |
| CN114450038A (en) * | 2020-02-28 | 2022-05-06 | 中物院成都科学技术发展中心 | Disinfection and sterilization system and disinfection and sterilization method |
| CN111558286A (en) * | 2020-05-12 | 2020-08-21 | 江苏峰峰鸿运环保科技发展有限公司 | SNCR-SCR combined denitration method and device |
| CN115069101A (en) * | 2021-03-12 | 2022-09-20 | 中国石油化工股份有限公司 | Gas-liquid mixer |
| CN115069101B (en) * | 2021-03-12 | 2023-11-28 | 中国石油化工股份有限公司 | Gas-liquid mixer |
| CN114073910A (en) * | 2021-11-19 | 2022-02-22 | 西安交通大学 | Methane/carbon dioxide photo-thermal coupling dry reforming three-section type gas mixer for three paths of fluids and use method |
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