CN205925413U - Flue gas whirl device and contain its desulphurization unit - Google Patents
Flue gas whirl device and contain its desulphurization unit Download PDFInfo
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- CN205925413U CN205925413U CN201620918629.9U CN201620918629U CN205925413U CN 205925413 U CN205925413 U CN 205925413U CN 201620918629 U CN201620918629 U CN 201620918629U CN 205925413 U CN205925413 U CN 205925413U
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- flue
- flue gas
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Abstract
The utility model belongs to the technical field of flue gas desulfurization, a flue gas whirl device and contain its desulphurization unit is disclosed. This flue gas whirl device includes at least one flue gas entry and at least one exhanst gas outlet, still includes the whirl flue, the intercommunication flue gas entry with the exhanst gas outlet, the whirl flue is convex, the exhanst gas outlet sets up on the inner wall of whirl flue, so that the flue gas warp follow whirl flue circular arc direction back the exhanst gas outlet is screwed out. This desulphurization unit includes flue gas whirl device. Compare with the device of increase gas -liquid mass transfer among the prior art, this flue gas whirl device simple structure, be difficult for deposit, scale deposit and jam, stability is good, can effectively improve gas -liquid mass transfer efficiency.
Description
Technical field
The utility model belongs to flue gas desulfurization technique field and in particular to a kind of flue gas swirl-flow devices, particularly to one kind
Flue gas swirl-flow devices for flue gas desulphurization system and the desulfurizer comprising it.
Background technology
At present, in China Power energy resource structure, coal electricity accounts for 3/4, and in the period of considerably long from now in coal electricity account for
Ratio will not occur large change.Therefore, in order to ensure the supply requirement of coal electricity, coal fired thermal power plant need to burn and substantial amounts of once can
Source-coal, and it is converted into secondary energy sources-electric energy, but waste gas, waste water, lime-ash and noise can be produced in transfer process
Deng pollutant, wherein, in waste gas, contain a large amount of SO2, and SO2Be air one of major pollutants, if directly waste gas is arranged
Put, not only serious environment pollution, and waste a large amount of Sulphur ressource.
In order to solve the above problems, prior art adopts the flue gas that desulfurizing agent spray rises generally in desulfurizing tower, makes cigarette
Gas and desulfurizing agent carry out gas-liquid mass transfer, and then remove the SO in flue gas2, it is to avoid its pollution to environment, and reclaimed sulphur
Resource.But, above-mentioned technology adopts the flue gas that desulfurizing agent spray rises, and has that air stream turbulence intensity is weak, gas-liquid two-phase contact rate
Low defect, and then lead to desulfuration efficiency not high.In order to overcome drawbacks described above, prior art have devised and multiple can strengthen gas-liquid
Two devices contacting, such as Chinese patent literature CN 203598679 U disclose the swirl-flow devices of double vortex flue gas washing towers.
This device includes body and several vortex boards of annular, and one end of vortex board is fixed on body, and the other end forms spray
Device installing hole, vortex board is in vortex shape distribution, and the outer surface of body arranges an annulus, annulus is evenly arranged with several and enters
Cigarette hole, smoke intaking hole is connected with exhaust gases passes, and exhaust gases passes are centroclinal to annulus.By above-mentioned swirl-flow devices achieve by under
The alkali lye that the flue gas up flowing is sprayed with spray equipment mixes, mixed flue gas and alkali lye repeatedly continuous on vortex board
Clash into, and then increase gas-liquid contact, improve desulfuration efficiency.
But, above-mentioned technology is provided with several vortex boards, and is divided into outer vortex board and interior vortex board, leads to eddy flow
Apparatus structure is relative complex.Furthermore, flue gas and alkali lye react between vortex plate surface or neighbouring vortices plate, lead to easy foulant
Ash in matter, such as flue gas grades, and is deposited on vortex plate surface, the stability of impact swirl-flow devices.
Utility model content
For this reason, to be solved in the utility model be in prior art increase gas-liquid mass transfer device exist complex structure,
The defect of stability difference, and then improve that a kind of structure is simple, less scaling, good stability, gas-liquid mass transfer sufficient flue gas eddy flow
Device and the desulfurizer comprising it.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is as follows：
Flue gas swirl-flow devices provided by the utility model, go out including at least one smoke inlet and at least one flue gas
Mouthful, also include,
Eddy flow flue, connects described smoke inlet and described exhanst gas outlet, and described eddy flow flue is circular arc, described flue gas
Outlet be arranged on the inwall of described eddy flow flue so that flue gas guide through described eddy flow flue circular arc after from described exhanst gas outlet
Screw out.
Further, also include entrance channel, connect described smoke inlet and described eddy flow flue, and with described eddy flow cigarette
Pipeline outer wall is tangent.
Further, described eddy flow flue is around forming gas-liquid mass transfer area, and described smoke outlet is provided with towards described
Gas-liquid mass transfer area extends, and is suitable to the flow-guiding structure that flue gas forms eddy flow.
Preferably, described exhanst gas outlet equally spacedly, be disposed on the inwall of described eddy flow flue, described water conservancy diversion knot
Structure corresponds setting with described exhanst gas outlet.
Preferably, the guide vane that described flow-guiding structure be arranged in parallel for two panels, forms between two described guide vanes
Flow-guiding channel.
Preferably, described guide vane is obliquely installed towards the flow direction of flue gas.
Preferably, along the flow direction of flue gas, described eddy flow flue is in the tangent line and institute with described guide vane junction
The angle α stated between guide vane is 30 °～60 °.
Preferably, described entrance channel is square runner, and described smoke inlet is square entrance.
The utility model additionally provides a kind of desulfurizer, comprises above-mentioned flue gas swirl-flow devices, also includes body, described
Internal portion's setting internal cavity, setting desulfurizing agent spraying layer in described internal cavity, described eddy flow flue is located at described desulfurizing agent spray
Below layer, so that desulfurizing agent and flue gas carry out mass transfer in described gas-liquid mass transfer area.
Further, also include, desulfurizing agent collection device, be arranged in the internal cavity of described body lower part, and be located at institute
State below eddy flow flue, described desulfurizing agent collection device is connected with described desulfurizing agent spraying layer, so that desulfurizing agent passes through described taking off
Sulphur agent spraying layer sprays；
Demister and neat stress outlet, described demister is arranged in the internal cavity of described body upper part, and is located at institute
State between desulfurizing agent spraying layer and the outlet of described neat stress.
Preferably, leave gap between described flue gas swirl-flow devices and described internal cavity.
Compared with prior art, the utility model has the advantages that：
1) the flue gas swirl-flow devices that the utility model embodiment is provided, by arranging eddy flow flue, have connected flue gas and have entered
Mouth and exhanst gas outlet, described eddy flow flue is circular arc, and described exhanst gas outlet is arranged on the inwall of described eddy flow flue, so that
Flue gas screws out from described exhanst gas outlet after guiding through described eddy flow flue circular arc.Above-mentioned setting extends gas residence time, increasing
The strong mixing exposure level of flue gas and desulfurizing agent, enhance desulphurization reaction process, eliminate flue gas deflection and gas-liquid contact
Blind area, finally improves gas-liquid mass transfer efficiency.Compared with the device of increase gas-liquid mass transfer of the prior art, this flue gas eddy flow fills
Put that structure is simple, be difficult deposition, fouling and blocking, good stability.
2) the flue gas swirl-flow devices that the utility model embodiment is provided, by inlet porting runner, connect described flue gas
Entrance and described eddy flow flue, and entrance channel is tangent with described eddy flow flue outer wall, flue gas circumferential movement can be aggravated, and then
Improve the spin intensity of rotational flow field and the gas-liquid mass-transfer efficiency of flue gas.
3) the flue gas swirl-flow devices that the utility model embodiment is provided, by eddy flow flue around formation gas-liquid mass transfer
Area, and be provided with towards the extension of described gas-liquid mass transfer area in described smoke outlet, it is suitable to the water conservancy diversion knot that flue gas forms eddy flow
Structure, more conducively forms eddy flow in gas-liquid mass transfer area, and then aggravates gas-liquid mass transfer efficiency；Described exhanst gas outlet equally spacedly, interval
It is arranged on the inwall of described eddy flow flue, described flow-guiding structure corresponds setting with described exhanst gas outlet, thus in gas-liquid
Mass-transfer zone forms multiply rotational flow field, so that gas-liquid mass transfer is fully carried out.
4) the flue gas swirl-flow devices that the utility model embodiment is provided, along the flow direction of flue gas, described eddy flow flue
Angle α between the tangent line and described guide vane of described guide vane junction is 30 °～60 °, more conducively forms rotation
Stream；Furthermore entrance channel setting squarely runner smoke inlet is square entrance, is easily installed dismounting.
5) the flue gas swirl-flow devices that the utility model embodiment is provided, make full use of desulfurizing agent simultaneously by rotational flow field
Complete sweetening process, decrease the usage amount of desulfurizing agent, simultaneously good to gas cleaning effect.
6) the flue gas swirl-flow devices that the utility model embodiment is provided, are easy to manufacture, are easy to anticorrosive construction, service life
Long, the little, low cost of power consumption, can be effectively ensured desulfurizer and normally run.When carrying out internal overhaul, when being substantially shorter maintenance
Between.
7) desulfurizer that the utility model embodiment is provided, except have the advantages that described above in addition to, also by
Gap is left, when flue gas enters in desulfurizer from the guide vane tilting between flue gas swirl-flow devices and desulfurizer internal cavity
Afterwards, eddy flow flows up, and flue gas disturbance space is bigger, and eddy flow is more violent.
Brief description
In order to be illustrated more clearly that the utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the desulfurizer in the utility model using described flue gas swirl-flow devices.
Fig. 2 is with the structural representation of flue gas swirl-flow devices described observed by the A-A section in Fig. 1 in the utility model
Figure.
Fig. 3 is with the structural representation of flue gas swirl-flow devices described observed by the B-B section in Fig. 2 in the utility model
Figure.
Reference is as follows：
1- neat stress exports；2- demister；3- desulfurizing agent spraying layer；4- body；5- flue gas swirl-flow devices；6- agitator；
7- desulfurizing agent collection device；8- smoke inlet；9- flow-guiding structure；10- exhanst gas outlet；11- eddy flow flue；12- gas-liquid mass transfer area.
Specific embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only
For the ease of description the utility model with simplify description, rather than instruction or the hint device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in the utility model for the language.
As long as additionally, involved technical characteristic in the utility model different embodiments disclosed below is each other
The conflict of not constituting just can be combined with each other.
Embodiment 1
The utility model provides a kind of flue gas swirl-flow devices, as shown in Figures 2 and 3, including at least one smoke inlet 8
With at least one exhanst gas outlet 10, also include eddy flow flue 11, connection smoke inlet 8 and exhanst gas outlet 10, eddy flow flue 11 is
Circular arc, exhanst gas outlet 10 is arranged on the inwall of eddy flow flue 11 so that flue gas through eddy flow flue 11 circular arc guiding after from cigarette
Gas outlet 10 back-out.In the present embodiment, smoke inlet 8 is one, and eddy flow flue 11 is circle, the number of exhanst gas outlet 10
For 16；In another embodiment, eddy flow flue 11 is two circular arcs along the tangential connection of circular arc bearing of trend.
For eddy flow flue 11, eddy flow flue 11 can be the structure arbitrarily comprising circular arc flue, and flue gas goes out
Mouth 8 is preferably provided on the inwall of circular arc flue, and circular arc flue is preferably but not limited to be the complete circular cigarette shown in Fig. 2
Road, and the circular arc flue in eddy flow flue 11 is more complete, then the eddy flow effect of flue gas is better.Further, above-mentioned circular arc
Flue can be the circular arc flue having and can forming eddy flow desired curvature, may also be generally radiused polygon flue,
And or the closing flue being surrounded by the different multi-section circular arc of curvature.
In above-mentioned flue gas swirl-flow devices, by arranging eddy flow flue 11, smoke inlet 8 and exhanst gas outlet 10 are connected, rotation
Flow flue 11 is circular arc, and exhanst gas outlet 10 is arranged on the inwall of eddy flow flue 11, so that flue gas is through eddy flow flue 11 circular arc
Screw out from exhanst gas outlet 10 after guiding.Above-mentioned setting extends gas residence time, enhance flue gas and the mixing of desulfurizing agent connects
Tactile degree, enhance desulphurization reaction process, eliminate flue gas deflection and gas-liquid contact blind area, finally improving gas-liquid mass transfer effect
Rate.Compared with the device of increase gas-liquid mass transfer of the prior art, this flue gas swirl-flow devices structure is simple, be difficult deposition, fouling
With blocking, good stability.
On the basis of technique scheme, also include entrance channel, connection smoke inlet 8 and eddy flow flue 11, and with
Eddy flow flue 11 outer wall is tangent.Flue gas circumferential movement is exacerbated by above-mentioned setting, and then improves the rotation of the rotational flow field of flue gas
Turn intensity and gas-liquid mass-transfer efficiency.In the present embodiment, entrance channel is square runner, and smoke inlet 8 is square entrance, just
In installing/dismounting.
On the basis of technique scheme, eddy flow flue 11, around forming gas-liquid mass transfer area 12, sets at exhanst gas outlet 10
It is equipped with towards gas-liquid mass transfer area 12 extension, be suitable to the flow-guiding structure 9 that flue gas forms eddy flow.In the present embodiment, water conservancy diversion knot
The guide vane that structure 9 be arranged in parallel for two panels, forms flow-guiding channel between two guide vanes.By arranging flow-guiding structure 9 more
Form eddy flow beneficial in gas-liquid mass transfer area, and then aggravate gas-liquid mass transfer efficiency.
Preferably, guide vane is obliquely installed towards the flow direction of flue gas.
Preferably, guide vane tilts upward setting towards the flow direction of flue gas.
Preferably, along the flow direction of flue gas, described eddy flow flue is in the tangent line and institute with described guide vane junction
The angle α stated between guide vane is 30 °～60 °, more conducively forms eddy flow.
Further, exhanst gas outlet 10 equally spacedly, be disposed on the inwall of eddy flow flue 11, flow-guiding structure 9 with
Exhanst gas outlet 10 corresponds setting, thus forming multiply rotational flow field in gas-liquid mass transfer area, so that gas-liquid mass transfer is fully carried out.
It should be noted that：Flow-guiding structure 9 is preferably but not limited to be that a pile tilts and parallel guide vane, and can be
Any structure that the flue gas flowing through described exhanst gas outlet 10 can be played along rotation direction guide functions.According to above description, ability
Flow-guiding structure 9 can be replaced with other embodiments by field technique personnel according to the actual requirements.
Embodiment 2
The present embodiment additionally provides a kind of desulfurizer using above-mentioned flue gas swirl-flow devices, and with reference to Fig. 1, it includes this
Body, body interior arranges setting desulfurizing agent spraying layer 3 in internal cavity, internal cavity, and eddy flow flue 11 is located under desulfurizing agent spraying layer 3
Side, so that desulfurizing agent and flue gas carry out mass transfer in gas-liquid mass transfer area 12.In the present embodiment, desulfurizer is desulfurizing tower, this
Body is desulfurization tower shell.
Further, also include desulfurizing agent collection device 7, be arranged in the internal cavity of body lower part, and be located at eddy flow cigarette
Below road 11, desulfurizing agent collection device 7 is connected with desulfurizing agent spraying layer 3, so that desulfurizing agent is sprayed by desulfurizing agent spraying layer 3；
Demister 2 and neat stress outlet 1, demister 2 is arranged in the internal cavity of body upper part, and is located at desulfurizing agent spraying layer 3 He
Between neat stress outlet 1.In the present embodiment, desulfurizing agent collection device 7 is stock tank.
Further, leave gap between flue gas swirl-flow devices and internal cavity, when flue gas enters from the guide vane tilting
After in desulfurizer, eddy flow flows up, and flue gas disturbance space is bigger, and eddy flow is more violent.
In above-mentioned desulfurizer, flue gas enters and inside desulfurizing tower through flue gas swirl-flow devices are tangential, in gas-liquid mass transfer
Area forms eddy flow, flows from bottom to top；And the desulfurizing agent of desulfurization tower bottom is atomized as fine drop through desulfurizing agent spraying layer 3, from
Upper and under fall, form mist post, gas-liquid two-phase contact, the SO in washing flue gas occur during falling2、SO3, HCl etc.,
Neat stress after desulfurizing agent washing is removed after droplet by neat stress outlet 1 outflow by demister 2.By said process, increase
Add gas-liquid contact time and contact area, and then increased gas-liquid mass transfer efficiency；Simultaneously in the collaborative work of centrifugal force and gravity
With under, so that drop in neat stress and solid content is reduced.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among the protection domain created still in the utility model.
Claims (10)
1. a kind of flue gas swirl-flow devices, including at least one smoke inlet (8) and at least one exhanst gas outlet (10), its feature exists
In, also include,
Eddy flow flue (11), connects described smoke inlet (8) and described exhanst gas outlet (10), and described eddy flow flue (11) is circular arc
Shape, described exhanst gas outlet (10) is arranged on the inwall of described eddy flow flue (11), so that flue gas is through described eddy flow flue (11)
Screw out from described exhanst gas outlet (10) after circular arc guiding.
2. flue gas swirl-flow devices according to claim 1 are it is characterised in that also include,
Entrance channel, connects described smoke inlet (8) and described eddy flow flue (11), and with described eddy flow flue (11) outer wall phase
Cut.
3. flue gas swirl-flow devices according to claim 1 and 2 are it is characterised in that described eddy flow flue (11) is around formation
Gas-liquid mass transfer area (12), described exhanst gas outlet (10) place is provided with and extends towards described gas-liquid mass transfer area (12), is suitable to flue gas
Form the flow-guiding structure (9) of eddy flow.
4. flue gas swirl-flow devices according to claim 3 it is characterised in that described exhanst gas outlet (10) equally spacedly,
On the inwall being arranged on described eddy flow flue (11), described flow-guiding structure (9) is corresponded with described exhanst gas outlet (10) and sets
Put.
5. flue gas swirl-flow devices according to claim 3 it is characterised in that：Described flow-guiding structure be arranged in parallel for two panels
Guide vane, forms flow-guiding channel between two described guide vanes.
6. flue gas swirl-flow devices according to claim 5 it is characterised in that：Described guide vane is towards the flowing side of flue gas
To being obliquely installed.
7. flue gas swirl-flow devices according to claim 6 it is characterised in that：Along the flow direction of flue gas, described eddy flow cigarette
Angle α between the tangent line and described guide vane of described guide vane junction for the road (11) is 30 °～60 °.
8. a kind of desulfurizer, including the flue gas swirl-flow devices any one of claim 1-7, also includes body, described
Body interior arranges internal cavity, and setting desulfurizing agent spraying layer (3) in described internal cavity is it is characterised in that described eddy flow flue
(11) it is located at below described desulfurizing agent spraying layer (3), so that desulfurizing agent and flue gas carry out mass transfer in described gas-liquid mass transfer area (12).
9. desulfurizer according to claim 8 is it is characterised in that also include,
Desulfurizing agent collection device (7), is arranged in the internal cavity of described body lower part, and is located under described eddy flow flue (11)
Side, described desulfurizing agent collection device (7) is connected with described desulfurizing agent spraying layer (3), so that desulfurizing agent is sprayed by described desulfurizing agent
Drench layer (3) spray；
Demister (2) and neat stress outlet (1), described demister (2) is arranged in the internal cavity of described body upper part, and position
Between described desulfurizing agent spraying layer (3) and described neat stress outlet (1).
10. desulfurizer according to claim 8 it is characterised in that：Described flue gas swirl-flow devices and described internal cavity it
Between leave gap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620918629.9U CN205925413U (en) | 2016-08-22 | 2016-08-22 | Flue gas whirl device and contain its desulphurization unit |
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| CN201620918629.9U CN205925413U (en) | 2016-08-22 | 2016-08-22 | Flue gas whirl device and contain its desulphurization unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275114A (en) * | 2020-09-09 | 2021-01-29 | 程学芳 | Two-stage wet desulphurization tower |
-
2016
- 2016-08-22 CN CN201620918629.9U patent/CN205925413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275114A (en) * | 2020-09-09 | 2021-01-29 | 程学芳 | Two-stage wet desulphurization tower |
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