CN206935107U - Modification flying dust nozzle for flue gas demercuration - Google Patents
Modification flying dust nozzle for flue gas demercuration Download PDFInfo
- Publication number
- CN206935107U CN206935107U CN201720922677.XU CN201720922677U CN206935107U CN 206935107 U CN206935107 U CN 206935107U CN 201720922677 U CN201720922677 U CN 201720922677U CN 206935107 U CN206935107 U CN 206935107U
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- Prior art keywords
- tubular body
- nozzle
- air intake
- intake duct
- diameter
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- 239000000428 dust Substances 0.000 title claims abstract description 32
- 238000012986 modification Methods 0.000 title claims abstract description 16
- 230000004048 modification Effects 0.000 title claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000003546 flue gas Substances 0.000 title claims abstract description 14
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 208000028659 discharge Diseases 0.000 description 3
- 230000003434 inspiratory effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
Power plant and Industrial Stoves demercuration field are the utility model is related to, discloses a kind of modification flying dust nozzle for flue gas demercuration.Nozzle includes the first tubular body and the second tubular body, the diameter of second tubular body is less than the diameter of first tubular body, second tubular body inserts the end of first tubular body, and second tubular body includes coaxially being socketed on the Part I inside first tubular body and outside first tubular body to be formed as the Part II of entrance；Wherein, closing is arranged between first tubular body and the second tubular body, air intake duct is provided with the side wall of first tubular body, the air intake duct is communicated in the space between the side wall of first tubular body and the side wall of the second tubular body.Nozzle of the present utility model can fly to being preferably atomized modified ash, and effectively solve modified flying dust and spray susceptible to plugging problem.
Description
Technical field
Power plant and Industrial Stoves demercuration field are the utility model is related to, more particularly to a kind of modification for flue gas demercuration
Flying dust nozzle.
Background technology
At present, coal-burning power plant is one of primary discharge source of heavy metal Hg, for the discharge and control of mercury, has caused state
The concern of inside and outside each side scholar, and conduct extensive research.
In order to control the discharge of mercury, activated carbon is typically sprayed into before dust arrester in the prior art to capture in flue gas
Heavy metal Hg.Afterwards, can be removed by electrostatic precipitator (such as ESP).Capture rate of the activated carbon to mercury in flue gas
It is higher, however, the technical costs of activated carbon capture mercury is higher.It additionally there are a kind of efficient and cheap demercuration method, i.e. make
The method adsorbed with modified flying dust to the mercury in flue gas.But it is also less currently for the spraying technique of modified flying dust, especially
Also there is larger room for improvement specifically for the nozzle in modified flying dust injection.
Utility model content
The purpose of this utility model is to overcome the atomizing effect for the modification flying dust nozzle for being currently used for flue gas demercuration not
Good and susceptible to plugging technical problem.
In order to solve the above-mentioned technical problem, the utility model provides a kind of modification flying dust nozzle for flue gas demercuration,
The nozzle includes：First tubular body and the second tubular body, the diameter of second tubular body are less than the first tubulose sheet
The diameter of body, second tubular body insert the end of first tubular body, and second tubular body includes coaxial
The Part I that is socketed on inside first tubular body and outside first tubular body to be formed as entrance
Part II；Wherein, closing, the first tubulose sheet are arranged between first tubular body and the second tubular body
Air intake duct is provided with the side wall of body, the air intake duct is communicated in the side wall and the second tubulose of first tubular body
Space between the side wall of body.
Preferably, the air intake duct is set for multiple and along first tubular body circumferential uniform intervals.
Preferably, the air intake duct includes the horizontal part parallel with first tubular body and the connection level
Portion and the rake of first tubular body, the injection direction that the rake is arranged towards the nozzle tilt.
Preferably, the air intake duct is 4, the axis of the axis of the rake and first tubular body it
Between angle be 45 °.
Preferably, the diameter of the air intake duct is equal with the diameter of second tubular body.
Preferably, a diameter of 10mm-20mm of first tubular body；The air intake duct and second tubulose
The diameter of body is 5mm-10mm.
Preferably, the nozzle includes the deceleration passage being connected with the port of export of first tubular body.
Preferably, the deceleration passage is loudspeaker of the inner surface formed with the helical structure for guiding flying dust rotational flow
Shape passage.
Preferably, the length of the horn-like passage is 30-50mm, and subtended angle is 45 ° -120 °；The spiral shell of the helical structure
It is highly 1-2mm away from for 3-5mm.
Preferably, first tubular body, the second tubular body and deceleration passage are prepared by carbofrax material.
Modification flying dust nozzle of the present utility model for flue gas demercuration has as follows compared with nozzle of the prior art
Advantage：(1) using static pressure suction air, the modification flying dust sprayed to the second tubular body is crushed, reached air intake duct
The effect for accelerating and being atomized.(2) under the collective effect of the injection of the second tubular body malleation and air intake duct negative inspiratory pressure, have
The modified flying dust that solves of effect sprays susceptible to plugging problem.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the modification flying dust nozzle for flue gas demercuration of embodiment of the utility model；
Fig. 2 is Fig. 1 partial structurtes diagrammatic cross-section.
Description of reference numerals
The tubular body of 100 first tubular body 200 second
The Part II of 201 Part I 202
The air intake duct of B ends 300
The rake of 301 horizontal part 302
The deceleration passage of X injection directions 400
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.
The utility model provides a kind of modification flying dust nozzle for flue gas demercuration, and the nozzle includes：First tubulose sheet
The tubular body 200 of body 100 and second.The diameter of second tubular body 200 is less than the diameter of the first tubular body 100, the second pipe
Shape body 200 inserts the end B of the first tubular body 100.Second tubular body 200 includes coaxially being socketed on the first tubular body
Part I 201 inside 100 and outside the first tubular body 100 to be formed as the Part II 202 of entrance.First
Closing is arranged between the tubular body 200 of tubular body 100 and second, is set in the side wall of the first tubular body 100 free
Gas air inlet pipe 300, the air intake duct 300 are communicated in the side wall of the first tubular body 100 and the side wall of the second tubular body 200
Between space.In this case, the Part II 202 of the second tubular body 200 is connected with the pipeline of the modified flying dust of conveying,
Under pressure, Part I 201 positioned at first tubular body 100 inside of the modified flying dust from the second tubular body 200
Spray into nozzle interior.Further, since air intake duct 300 is communicated in the side wall and the second tubular body of the first tubular body 100
Space between 200 side wall, air intake duct negative inspiratory pressure enter to the modification flying dust that nozzle interior is sprayed into from Part I 201
Row is broken, and reaches the effect for accelerating and being atomized.
Specifically, the static pressure that scene measures before electric cleaner (ESP) in flue is -1000pa or so, air intake duct 300
Effect be that air mixes with the modification flying dust of nozzle interior using static pressure suction air.
In order to ensure that air can be from all directions of nozzle evenly into nozzle interior, it is preferable that air intake duct
300 are set for multiple and along the first tubular body 100 circumferential uniform intervals.Because the second tubular body 200 is coaxially socketed in
Part inside first tubular body 100 has certain development length, i.e. the major part of the second tubular body 200 is extend into
The inside of first tubular body 100, so, the inner surface of the outer surface of the second tubular body 200 and the first tubular body 100 it
Between the annulus formed with the injection direction X extensions along nozzle, air intake duct 300 is fixed on the first tubular body 100
Outer wall simultaneously connects with above-mentioned annulus.In this case, after air enters in annulus along injection direction X flowings simultaneously
The modification flying dust sprayed with the Part II 202 from the second tubular body 200 positioned at downstream is mixed, and one is carried out to modified flying dust
Secondary atomization.
In addition, for the flowing velocity of the modification flying dust in accelerating jet, in one of the present utility model specific implementation
In mode, air intake duct 300 is arranged to include the horizontal part 301 parallel with the first tubular body 100 and connection horizontal part 301
With the rake 302 of the first tubular body 100, the injection direction X that rake 302 is arranged towards nozzle is tilted.Preferably, it is empty
Gas air inlet pipe 300 is 4, and the angle between the axis of rake 302 and the axis of the first tubular body 100 is 45 °.This
In the case of, air incides the inside of nozzle along rake 302 at an angle, promotes the modification flying dust of nozzle interior towards spray
Penetrate direction accelerated motion.In addition, by the negative inspiratory pressure of air intake duct 300 in the injection of the malleation of the second tubular body 200 and nozzle
Collective effect under, the occurrence of also effectively prevent spray nozzle clogging.
Further, the diameter of air intake duct 300 is arranged to equal with the diameter of the second tubular body 200.Preferably,
A diameter of 10mm-20mm of first tubular body 100；The diameter of the tubular body 200 of air intake duct 300 and second is 5mm-
10mm.So, the concentration of the air inflow and the amount of modified flying dust, the effectively modified flying dust of control of air can be controlled, reaches preferable
Atomizing effect.
Further, nozzle includes the deceleration passage 400 being connected with the port of export of the first tubular body 100.Specifically, such as
Shown in Fig. 1, the outlet of deceleration passage 400 is formed as jet expansion.Deceleration passage 400 is set with the coaxial line of the second tubular body 200
Put.Deceleration passage 400 is horn-like passage of the inner surface formed with the helical structure for guiding flying dust rotational flow.This
In the case of, modified flying dust is after the air effect acceleration and primary atomization that nozzle interior sucks through air intake duct 300, by first
Tubular body 100 enters in deceleration passage 400.Modified ash flies to slow down in deceleration passage 400, simultaneously as logical by slowing down
The influence of the helical structure formed on the inwall of road 400, produce stronger rotational flow.The flue gas of nozzle exterior is through deceleration passage
During 400 outer wall, generation bothers mobilization and flies to mix with the ash in nozzle, thus, produces secondary-atomizing to modified flying dust and makees
With.
In addition, length and subtended angle by changing horn-like deceleration passage 400, can easily adjust the winged spray of modified ash
Firing angle degree.By changing the pitch and height of helical structure, the degree of the winged rotational flow of ash can be controlled.Preferably, slow down logical
The length in road 400 is 30-50mm, and subtended angle is 45 ° -120 °.The pitch of helical structure is 3-5mm, is highly 1-2mm.This
In the case of, preferably jeting effect can be reached.
In view of the wear resistance of nozzle, in a preferred embodiment of the present utility model, the first tubular body
100th, the second tubular body 200 and deceleration passage 400 are prepared by carbofrax material.Thus, it is possible to ensure the resistance to of nozzle
Mill property, and ensure that the security that nozzle uses in high temperature environments.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
In this.In range of the technology design of the present utility model, a variety of simple variants can be carried out to the technical solution of the utility model.
It is combined in any suitable manner including each particular technique feature.In order to avoid unnecessary repetition, the utility model
Various combinations of possible ways are no longer separately illustrated.But these simple variants and combination should equally be considered as the utility model institute
Disclosure, belong to the scope of protection of the utility model.
Claims (10)
1. the modification flying dust nozzle for flue gas demercuration, it is characterised in that the nozzle includes：
First tubular body (100)；With
Second tubular body (200), the diameter of second tubular body (200) are less than the diameter of first tubular body, institute
State the end (B) that the second tubular body (200) inserts first tubular body (100), the second tubular body (200) bag
Include the Part I (201) that is coaxially socketed on inside first tubular body and outside first tubular body with
Be formed as the Part II (202) of entrance；
Wherein, closing, the side of first tubular body are arranged between first tubular body and the second tubular body
Air intake duct (300) is provided with wall, the air intake duct (300) is communicated in the side wall and second of first tubular body
Space between the side wall of tubular body.
2. nozzle according to claim 1, it is characterised in that the air intake duct (300) is multiple and along described the
The circumferential uniform intervals of one tubular body (100) are set.
3. nozzle according to claim 2, it is characterised in that the air intake duct (300) includes and the described first pipe
The rake (302) of the parallel horizontal part of shape body (301) and the connection horizontal part and first tubular body, it is described to incline
The injection direction (X) that inclined portion is arranged towards the nozzle tilts.
4. nozzle according to claim 3, it is characterised in that the air intake duct (300) is 4, the rake
(302) the angle between axis and the axis of first tubular body (100) is 45 °.
5. nozzle according to claim 1, it is characterised in that the diameter and described second of the air intake duct (300)
The diameter of tubular body (200) is equal.
6. nozzle according to claim 5, it is characterised in that a diameter of 10mm- of first tubular body (100)
20mm；The diameter of the air intake duct (300) and second tubular body (200) is 5mm-10mm.
7. according to the nozzle described in any one claim in claim 1-6, it is characterised in that the nozzle includes and institute
State the deceleration passage (400) of the port of export connection of the first tubular body (100).
8. nozzle according to claim 7, it is characterised in that the deceleration passage (400) be inner surface formed with for
Guide the horn-like passage of the helical structure of flying dust rotational flow.
9. nozzle according to claim 8, it is characterised in that the length of the horn-like passage is 30-50mm, and subtended angle is
45°-120°；The pitch of the helical structure is 3-5mm, is highly 1-2mm.
10. nozzle according to claim 7, it is characterised in that first tubular body (100), the second tubular body
(200) it is prepared with deceleration passage (400) by carbofrax material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720922677.XU CN206935107U (en) | 2017-07-27 | 2017-07-27 | Modification flying dust nozzle for flue gas demercuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720922677.XU CN206935107U (en) | 2017-07-27 | 2017-07-27 | Modification flying dust nozzle for flue gas demercuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206935107U true CN206935107U (en) | 2018-01-30 |
Family
ID=61371691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720922677.XU Active CN206935107U (en) | 2017-07-27 | 2017-07-27 | Modification flying dust nozzle for flue gas demercuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206935107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281926A (en) * | 2017-07-27 | 2017-10-24 | 中国神华能源股份有限公司 | Modification flying dust nozzle for flue gas demercuration |
-
2017
- 2017-07-27 CN CN201720922677.XU patent/CN206935107U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281926A (en) * | 2017-07-27 | 2017-10-24 | 中国神华能源股份有限公司 | Modification flying dust nozzle for flue gas demercuration |
| CN107281926B (en) * | 2017-07-27 | 2023-07-25 | 中国神华能源股份有限公司 | Modified fly ash nozzle for flue gas mercury removal |
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| GR01 | Patent grant |