CN109550320A - Dedusting demister and absorption tower - Google Patents
Dedusting demister and absorption tower Download PDFInfo
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- CN109550320A CN109550320A CN201710891986.XA CN201710891986A CN109550320A CN 109550320 A CN109550320 A CN 109550320A CN 201710891986 A CN201710891986 A CN 201710891986A CN 109550320 A CN109550320 A CN 109550320A
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- cylinder
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- swirl vane
- dedusting
- dedusting demister
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The embodiment of the present invention provides a kind of dedusting demister and absorption tower, belongs to flue gases purification field.The dedusting demister includes dedusting demisting unit, and dedusting demisting unit includes: cylinder, and cylinder has exhaust gases passes；Eddy flow, eddy flow is arranged in exhaust gases passes, and eddy flow attached bag includes multiple swirl vanes, and each swirl vane has root of blade and blade tip, along the direction of root of blade to blade tip, the angle of at least one swirl vane and cylinder cross section is gradually increased or reduces.
Description
Technical field
The present invention relates to filed of flue gas purification more particularly to a kind of dedusting demister and absorption towers.
Background technique
Currently, in terms of flue gas or industrial tail gas SO2 control emission, it is common to use mature hollow-spraying-tower limestone wet-process is de-
Sulphur technology.Increase some enhancing devices on it again using this technology, can be realized more satisfactory treatment effect.But through sky
After tower wet sprinkling washing, purifying desulfurization, flue gas can carry the fine droplet generated during spray, cannot meet discharge standard,
Demister additionally need to be installed to be removed.
But either Flat defroster or ridge type demister in the prior art, dedusting defogging effect is unsatisfactory,
By existing dedusting demister treated the general dust emission concentration of flue gas in 10mg/N.m3 or so.It also deposits in the prior art
The dust emission concentration of flue gas can reach after a kind of sub- tube type dust removing demister of the higher Multi-stage spiral of removal efficiency, processing
To≤5mg/N.m3.But the working efficiency of this tube type dust removing demister is influenced by unit load, when unit flue gas flow rate compared with
When fast, since flue gas carries the capability improving of dust and drop, the bad problem of dedusting defogging effect will cause so that efficiency is difficult
With stabilization.
Another dedusting demister pattern be after the demister of wet desulphurization device install additional Wet type electric dust-removing device into
Row deep purifying, such clean-up effect are more satisfactory.But wet electrical dust precipitator equipment is huge, if building on former desulfurizing tower top
If need to generally carry out expanding and increase to absorption tower, retrofit work amount is very big, and increase load is larger, need to absorb tower foundation to original
It is reinforced.If building outside tower, need biggish construction space big, and the multiple deflecting of flue makes resistance increase many,
Transformation difficulty is big on constructed item, and initial cost is high, and maintenance workload is big, and operation energy consumption is high.
Summary of the invention
In view of this, the present invention provides a kind of dedusting demister and absorption tower, to solve fume treatment in the prior art
The bad problem of effect.
The embodiment of the present invention provides a kind of dedusting demister comprising dedusting demisting unit, dedusting demisting unit include:
Cylinder, cylinder have exhaust gases passes；Eddy flow, eddy flow are arranged in exhaust gases passes, and eddy flow attached bag includes multiple swirl vanes, respectively
Swirl vane has root of blade and blade tip, along the direction of root of blade to blade tip, at least one swirl vane and
The angle of cylinder cross section is gradually increased or reduces.
Optionally, along the direction of root of blade to blade tip, the angle of at least one swirl vane and cylinder cross section
It is gradually increased.
Optionally, each swirl vane also has edge and blade lower edge on blade, and the direction of blade lower edge is arrived on edge along blade,
At least one swirl vane and the angle of cylinder cross section are gradually increased or reduce.
Optionally, each swirl vane also has edge and blade lower edge on blade, edge on the blade of at least one swirl vane
On be connected with the reducing-flow structure that can stop at least partly dust and/or drop.
Optionally, reducing-flow structure includes the first choked flow bank, and the first choked flow bank is connected on the blade of swirl vane along upper, and
The lower section on edge extends on blade.
Optionally, reducing-flow structure further includes the second choked flow bank, and the second choked flow bank passes through the blade of linkage section and swirl vane
Upper edge connection, and the second choked flow bank is located at the top of swirl vane.
Optionally, the value range of the angle of the edge line and horizontal plane of the blade lower edge of swirl vane is 0 ° to 30 °.
Optionally, eddy flow further includes cyclone cover cylinder, and swirl vane is mounted in cyclone cover cylinder, and the blade of swirl vane
End is connect with cyclone cover cylinder.
Optionally, dirt opening is provided with out on cyclone cover cylinder, dirt opening runs through cyclone cover cylinder, the blade of each swirl vane out
Dirt opening is correspondingly arranged on out below end.
Optionally, there is gap between the outside wall surface of cyclone cover cylinder and the inner wall of cylinder；And/or cyclone cover cylinder is outer
Connecting rod is provided on wall, cyclone cover cylinder is connect by connecting rod with cylinder.
Optionally, the cross-sectional shape of cyclone cover cylinder and the cross-sectional shape of cylinder are identical.
Optionally, it is regular polygon that the cross-sectional shape of cylinder, which is round or cylinder cross-sectional shape,.
Optionally, the cross-sectional shape of cylinder is regular polygon, and the cross-sectional shape of cyclone cover cylinder is circle.
Optionally, eddy flow further includes central tube, and the root of blade of swirl vane is connected on central tube.
Optionally, dedusting demisting unit further includes wash tub pipe, and the center of cylinder is arranged in wash tub pipe, and along cylinder
Axially extending, wash tub pipe passes through eddy flow, and eddy flow is at least one, and is successively spaced and sets along the length direction of wash tub pipe
It sets.
Optionally, dedusting demisting unit further includes at least one flooding nozzle, and flooding nozzle is arranged on wash tub pipe.
Optionally, dedusting demisting unit is multiple, and along the radial close-packed arrays of cylinder；And/or dedusting demisting unit is
It is multiple, and be sequentially connected along the axial direction of cylinder.
According to an embodiment of the invention, providing a kind of absorption tower comprising absorb tower shell and dedusting demister, dedusting
Demister is above-mentioned dedusting demister.
By above technical scheme as it can be seen that the cylinder of the dedusting demister of the embodiment of the present invention is for gathering dust, in cigarette
Gas channel for flue gas for passing through.Eddy flow be arranged in exhaust gases passes so that flue gas along exhaust gases passes flow during, warp
Cross eddy flow to by conversion of motion straight up for rotation move upwards, under the influence of centrifugal force, the dust in flue gas
Grain and droplet are thrown on the inner wall of cylinder, to realize the disengaging of dust and/or drop etc. with flue gas, realize dedusting demisting
Function.Swirl vane in eddy flow can make flue gas become swirling eddy by the generation of the eddy flow period of the day from 11 p.m. to 1 a.m, arrive along root of blade
The angle of the direction of blade tip, swirl vane and cylinder cross section is gradually increased or reduces, so that the type face of swirl vane is
The type face of variation can carry out water conservancy diversion to the flue gas of process, dust and drop etc. is made to be easier to collect, to be easier from flue gas
Middle separation removal.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in inventive embodiments can also obtain according to these attached drawings for those of ordinary skill in the art
Obtain other attached drawings.
Fig. 1 is the schematic cross-sectional view on the absorption tower of the embodiment of the present invention；
Fig. 2 is the schematic cross-sectional view of the dedusting demisting unit of the lower end water receiving pipe of the embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view of the dedusting demisting unit of the upper end water receiving pipe of the embodiment of the present invention；
Fig. 4 is the partial enlargement structural representation of the dedusting demisting unit of the circular cylinder body of the embodiment of the present invention；
Fig. 5 is the partial enlargement structural representation of the dedusting demisting unit of the regular hexagon cylinder of the embodiment of the present invention；
Fig. 6 is the lateral section view knot of the circular cylinder body of the embodiment of the present invention and the dedusting demisting unit of circular cyclone cover cylinder
Structure schematic diagram；
Fig. 7 is the cross of the regular hexagon cylinder of the embodiment of the present invention and the dedusting demisting unit of regular hexagon cyclone cover cylinder
To schematic cross-sectional view；
Fig. 8 cuts open for the transverse direction of the regular hexagon cylinder of the embodiment of the present invention and the dedusting demisting unit of circular cyclone cover cylinder
Depending on structural schematic diagram；
Fig. 9 is the lateral schematic cross-sectional view of eddy flow of the circular cyclone cover cylinder of the embodiment of the present invention；
Figure 10 is the lateral schematic cross-sectional view of eddy flow of the regular hexagon cyclone cover cylinder of the embodiment of the present invention；
Figure 11 is the half section structure diagram of eddy flow of the embodiment of the present invention；
Figure 12 is the schematic perspective view of eddy flow of the circular cyclone cover cylinder of the embodiment of the present invention；
Figure 13 is the schematic perspective view of eddy flow of the regular hexagon cyclone cover cylinder of the embodiment of the present invention；
Figure 14 is the schematic perspective view of the board-like swirl vane of the embodiment of the present invention；
Figure 15 is that the stereochemical structure at the first visual angle of the swirl vane with the first choked flow bank of the embodiment of the present invention is shown
It is intended to；
Figure 16 is that the stereochemical structure at the second visual angle of the swirl vane with the first choked flow bank of the embodiment of the present invention is shown
It is intended to；
Figure 17 is the schematic perspective view of the swirl vane with the second choked flow bank of the embodiment of the present invention；
Figure 18 is the stereochemical structure of the swirl vane with the first choked flow bank and the second choked flow bank of the embodiment of the present invention
Schematic diagram；
Figure 19 is longitudinal schematic cross-sectional view of the swirl vane of the embodiment of the present invention；
Figure 20 is the lateral schematic cross-sectional view of the swirl vane of the embodiment of the present invention.
Detailed description of the invention:
1, tower shell is absorbed；2, adsorption tower smoke import；3, adsorption tower smoke exports；4, braced frame；5, dedusting demisting
Unit；51, cylinder；52, eddy flow；521, swirl vane；5211, root of blade；5212, blade tip；5213, on blade
Edge；5214, blade lower edge；5215, the first choked flow bank；5216, the second choked flow bank；5217, linkage section；522, cyclone cover cylinder；
5222, go out dirt opening；523, connecting rod；524, central tube；53, wash tub pipe；54, flooding nozzle；6, main wash tub pipe；7, it connects
Water pipe；9, sealing device.
Specific embodiment
Certainly, any technical solution for implementing the embodiment of the present invention must be not necessarily required to reach simultaneously above all excellent
Point.
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present invention, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
Applying example only is a part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the implementation in the embodiment of the present invention
The range of protection of the embodiment of the present invention all should belong in example, those of ordinary skill in the art's every other embodiment obtained.
Below with reference to attached drawing of the embodiment of the present invention the embodiment of the present invention will be further explained specific implementation.
As shown in Fig. 2-20, according to an embodiment of the invention, dedusting demister includes dedusting demisting unit 5, dedusting is removed
Mist unit 5 includes cylinder 51 and eddy flow 52, and cylinder 51 has exhaust gases passes.Eddy flow 52 is arranged in exhaust gases passes, eddy flow
Son 52 includes multiple swirl vanes 521, and each swirl vane 521 has root of blade 5211 and blade tip 5212, along blade root
Portion 5211 arrives the direction of blade tip 5212, the angle of at least one swirl vane 521 and 51 cross section of cylinder be gradually increased or
It reduces.
Cylinder 51 for gathering dust, in exhaust gases passes for passing through for flue gas.Eddy flow 52 is arranged in exhaust gases passes,
So that flue gas along exhaust gases passes flow during, by eddy flow 52 to by conversion of motion straight up be rotation upwards fortune
Dynamic, under the influence of centrifugal force, dust particles and droplet in flue gas are thrown on the inner wall of cylinder 51, to realize dust
And/or the disengaging of drop etc. and flue gas, realize dedusting defrosting function.Swirl vane 521 in eddy flow 52 can make flue gas exist
Become swirling eddy by generating when eddy flow 52, the direction of blade tip 5212, swirl vane 521 are arrived along root of blade 5211
It is gradually increased or reduces with the angle of 51 cross section of cylinder, so that the type face of swirl vane 521 is the type face of variation, it can be to warp
The flue gas crossed carries out water conservancy diversion, and dust and drop etc. is made to be easier to collect, to be easier to separate removal from flue gas.
As shown in Figures 2 to 4, in the present embodiment, dedusting demisting unit 5 further includes wash tub pipe 53, wash tub pipe 53
It is arranged at the center of cylinder 51, is arranged concentrically with cylinder 51, and along the axially extending of cylinder 51.In this way setting so that, same
On one cross section, wash tub pipe 53 and being equidistant everywhere in the inner wall of cylinder 51 or close, and can be equably to cylinder
51 inner wall is rinsed, and makes to be attached to dust and drop of the inner wall of cylinder 51 etc. from inner wall disengaging, to guarantee complete
Prevent to face the encrustation of cylinder 51.
As shown in Fig. 2, wash tub pipe 53 can be connect by being connected to the water receiving pipe 7 of lower end with external water source.Flushing water
The length of pipe 53 can be equal to or less than the length of cylinder 51.As shown in figure 3, wash tub pipe 53 can also be by being connected to upper end
Water receiving pipe 7 connect with external water source.
Optionally, in the present embodiment, dedusting demisting unit 5 further includes at least one flooding nozzle 54, flooding nozzle 54
It is arranged on wash tub pipe 53.Wash tub pipe 53 is rinsed the inner wall of cylinder 51 by the water outlet of flooding nozzle 54.Rinse spray
Multi-direction water outlet may be implemented in mouth 54, to guarantee flushing effect.Certainly, in other embodiments, it is convenient to omit flooding nozzle
54, aperture realizes that water outlet is rinsed directly on wash tub pipe 53.Flooding nozzle 54 can be any structure appropriate, as long as guaranteeing
It can be discharged and cylinder 51 is rinsed.
Optionally, flooding nozzle 54 be it is multiple, and along the length direction of wash tub pipe 53 (axial direction of cylinder 51) successively between
Every setting, to guarantee to rinse cylinder 51 comprehensively.The particular number of flooding nozzle 54, two neighboring flooding nozzle 54
Between interval, the distribution mode of flooding nozzle 54 etc. can according to need specific determination.For example, flooding nozzle 54 can rush
Be arranged at equal intervals on wash water pipe 53, can also according to the aggregation situation of dust on cylinder 51 and drop, dust and drop etc. compared with
Keep the spacing between flooding nozzle 54 smaller for intensive position.
In the present embodiment, eddy flow 52 is multiple, and setting is successively spaced along the axial direction of cylinder 51.Optionally, multiple
Eddy flow 52 can concentric arranged in series.Wash tub pipe 53 passes through at least one eddy flow 52.For example, as shown in Figures 2 and 3,
Wash tub pipe 53 passes through multiple eddy flow 52.
Above or below eddy flow 52 that flooding nozzle 54 can be located most closely to.
As shown in figs. 4 through 10, the cross-sectional shape of cylinder 51 can be round, ellipse or polygon etc..Preferably, cylinder
When the cross section of body 51 is polygon, positive regular polygon can be, for example, regular hexagon.In multiple 51 close-packed arrays of cylinder
When, the cylinder 51 of regular hexagon can line up honeycomb structure, prevent flue gas from passing through the gap between two cylinders 51, it is ensured that cigarette
Gas disposal effect.The gas inlet and exhanst gas outlet being connected to exhaust gases passes are provided on cylinder 51, gas inlet and flue gas go out
The specific setting position of mouth can according to need determination, such as the top and bottom of cylinder 51 are arranged in, and also can be set in cylinder
On the side wall of body 51.In the present embodiment, gas inlet is located on the bottom wall of cylinder 51, and exhanst gas outlet is located at the roof of cylinder 51
On, i.e., flue gas is along direction flowing from bottom to top in Fig. 2.
Eddy flow 52 can also include cyclone cover cylinder 522, connecting rod 523 and central tube 524 in addition to swirl vane 521.When
So, in other embodiments, eddy flow 52 can only include swirl vane 521, and the root of blade 5211 of swirl vane 521 is straight
It connects and is connect with wash tub pipe 53, blade tip 5212 is directly connect with the inner wall of cylinder 51.
In the present embodiment, central tube 524 with wash tub pipe 53 for connecting.As shown in Figure 4 and Figure 5, wash tub pipe 53
Across central tube 524.The root of blade 5211 of swirl vane 521 is connected on the outer wall of central tube 524.
Optionally, central tube 524 is spheroid shape structure, and outer surface is arcwall face, can effectively guide air-flow in this way
Flowing, allow that dust and droplet in flue gas be more easier shifts to cylinder 51 and accumulates biggish particle, realizes dedusting
Defrosting function, meanwhile, the type face of central tube 524 is smooth cambered surface, and airflow-reversing can be made more smooth, reduces resistance.
Optionally, the cross-sectional area of central tube 524 is maximum at the position for corresponding to swirl vane 521, and edge moves closer to
The cross-sectional area in the direction of end, central tube 524 is gradually reduced.I.e. along flow of flue gas direction, the cross-sectional area of central tube 524
After being gradually increased and it is gradually reduced.Blind cylinder centered on central tube 524, by central tube section, upper half elliposoidal blocks and lower semielliptical
Shape blocks composition.
Certainly, in other embodiments, central tube 524 can be cylindrical or other structures.
As shown in Fig. 6-Figure 10, each eddy flow 52 all has multiple swirl vanes 521, and swirl vane 521 passes through blade
Root 5211 is connect with central tube 524.And along the circumferential direction of central tube 524, multiple swirl vanes 521 are set gradually.It is two neighboring
It can have interval between the root of blade 5211 of swirl vane 521, can also not have interval.The quantity of swirl vane 521
Value range may be greater than or be equal to 12, and be less than or equal to 18.These swirl vanes 521 can be with central tube 524
Center centered on, circular array arrangement.
In the present embodiment, the blade tip 5212 of swirl vane 521 is connected on cyclone cover cylinder 522, cyclone cover cylinder 522
The both ends of swirl vane 521 can be limited with the cooperation of central tube 524, and then the stabilization of swirl vane 521 can be increased
Property, avoid swirl vane 521 from generating vibrating noise under the impact of flue gas.
The cross-sectional shape of cyclone cover cylinder 522 can be same or similar with cylinder 51.For example, shown in Fig. 6 and Fig. 7, eddy flow
The cross-sectional shape of cover cylinder 522 can be identical as cylinder 51, when the cross-sectional shape of cylinder 51 is round, cyclone cover cylinder 522
Cross-sectional shape be also round, and the two is concentric.When the cross-sectional shape of cylinder 51 is regular hexagon, cyclone cover cylinder 522
Cross-sectional shape be also regular hexagon, and the two is concentric.
Certainly, the cross-sectional shape of cyclone cover cylinder 522 can also be different from cylinder 51.As shown in figure 8, working as the cross of cylinder 51
When cross sectional shape is regular hexagon, the cross-sectional shape of cyclone cover cylinder 522 can be circle.
In the present embodiment, there is gap, under this gap is between the outer wall of cyclone cover cylinder 522 and the inner wall of cylinder 51
Channel is fallen, can be fallen for dust, drop etc..The size in gap can according to need determination, and gap cannot be excessive, understand shadow in this way
Ring fume treatment efficiency, gap can not be too small and interfere dust, drop or particles fall.
As shown in Figure 12 and Figure 13, optionally, dirt opening 5222 is provided with out on cyclone cover cylinder 522, dirt is open out
5222 run through cyclone cover cylinder 522, out dirt opening 5222 in flue gas dust and drop etc. pass through cyclone cover cylinder 522, to arrive
Up to the inner wall of cylinder 51.
In the present embodiment, 5212 lower section of blade tip of each swirl vane 521 is correspondingly arranged on out dirt opening 5222,
To ensure dedusting defogging effect.
Optionally, be provided with connecting rod 523 on the outer wall of cyclone cover cylinder 522, cyclone cover cylinder 522 by connecting rod 523 with
Cylinder 51 connects.Connecting rod 523 can be it is multiple, and along the outer wall uniform intervals of cyclone cover cylinder 522 be arranged, to cyclone cover cylinder
522 provide reliable and stable support.Connecting rod 523 can be the structures such as round bar, rectangular shaft or other blocks, plate body, as long as energy
Enough realize the connection of cyclone cover cylinder 522 and cylinder 51.
As shown in Figure 14-Figure 20, swirl vane 521, which removes, has above-mentioned root of blade 5211, blade tip 5212
Outside, also have blade under 5213 and blade along 5214.The swirl vane of eddy flow 52 of the present embodiment is New-type Swirl Flow leaf
Piece.It (can hereafter be described in detail the structure of swirl vane 521) with multidirectional angle, and can on blade edge
Choked flow bank is provided on 5213, for stopping drop and dust to continue to separate drop and dust simultaneously with flue gas with flow of flue gas
It is guided to flow to the inner wall of cylinder 51, finally falls and removed along the inner wall of cylinder 51.
Specifically, the multi-direction angle of swirl vane 521 refers to:
Along root of blade 5211 to 5212 direction of blade tip, gradually changes, i.e., gradually increase with the angle c of horizontal plane
Big or diminution.Preferably, the direction of blade tip 5212, swirl vane 521 and 51 cross section of cylinder are arrived along root of blade 5211
Angle be gradually increased.Make dust and drop be easier to collect to the inner wall of cylinder 51 in this way, and then ensure that dedusting removes
Fog effect and efficiency.It should be noted that in the present embodiment, the cross section of cylinder 51 is overlapped with horizontal plane.When an eddy flow
When son 52 has multiple swirl vanes 521, it is not necessary to which all swirl vanes 521 arrive blade tip 5212 along root of blade 5211
On direction, the angle c with horizontal plane is variation.Swirl vane 521 has certain inclination angle, and angle with horizontal plane c is from blade
Root 5211 is to change to blade tip 5212.
Optionally, the direction along blade under 5213 to blade along 5214, at least one swirl vane 521 and cylinder 51
The angle of cross section is gradually increased or reduces.That is, the direction along blade under 5213 to blade along 5214, with horizontal plane
Angle is also to gradually change.As shown in figure 20, the part on close upper edge of swirl vane 521 and the angle d1 of horizontal plane are less than
Part and the angle d2 of horizontal plane close to lower edge.
Wherein, the value range of angle d1 are as follows: 24 °≤d1≤90 °.The value range of angle d2 are as follows: 24 °≤d2≤45 °.
As shown in Figure 9 and Figure 10, under the blade of the swirl vane 521 of eddy flow 52 along 5214 orthographic projection (floor projection,
That is the projection of swirl vane 521 in the horizontal plane) and the first line of reference between have angle a.First line of reference refers to cyclone cover
Cylinder 522 center under blade along 5214 orthographic projection line end (point intersected with the inner wall of cyclone cover cylinder 522) line.
It should be noted that the angle a of these swirl vanes 521 can when eddy flow 52 has multiple swirl vanes 521
Be it is identical, be also possible to different.In the present embodiment, the plane projection of swirl vane 521 it is following along (this implementation
Edge is being just in example, on the blade of the orthographic projection line of the blade lower edge of one of swirl vane 521 and adjacent swirl vane 521
Projection line is overlapped), (value range of angle a) is 15 °≤a to the centrifugation angle between edge thread end and the middle cylinder line of centres
≤ 30 °, drop and dust is set to obtain bigger centrifugal force when rotating with flue gas along swirl vane 521, it is easier to be intended to cylinder
51。
As shown in figure 11, there is between 5214 and horizontal plane angle b under the blade of swirl vane 521.It in this way can be more
Dust, drop etc. are directed to well on the wall surface of cylinder 51.Edge line and level under the blade of swirl vane 521 along 5214
The value range of the angle in face is 0 ° to 30 °, makes drop and dust in flue gas uphill process, it is easier to tend to swirl vane
521 blade tip 5212, to more easily reach the inner wall of cylinder 51.
It should be noted that the angle b's of each swirl vane 521 takes when eddy flow 52 has multiple swirl vanes 521
It is worth not necessarily identical.As long as the value of angle b is in value range.
As shown in Figure 15-Figure 18, each swirl vane 521 also have blade under 5213 and blade along 5214, at least one
The reducing-flow structure that can stop at least partly dust and/or drop is connected with along 5213 on the blade of a swirl vane 521.Choked flow
The dust and drop that structure is used to stop in flue gas continue with flow of flue gas, to realize dedusting demisting.As long as reducing-flow structure with
The blocking that there is swirl vane 521 angle dust and/or drop can be realized.Here have angle refer to prolonging for reducing-flow structure
It stretches direction and it is not parallel in the tangent line of the link position of swirl vane 521.
Optionally, as shown in Figure 15 and Figure 16, reducing-flow structure includes the first choked flow bank 5215, the connection of the first choked flow bank 5215
On the blade of swirl vane 521 along 5213, and the lower section on blade along 5213 extends.In this way when flue gas passes through with the
When the swirl vane 521 of one choked flow bank 5215, by the barrier effect of the first choked flow bank 5215 and swirl vane 521 itself, one
Part dust and drop are moved to blade tip 5212 along the surface of swirl vane 521, and are reached by going out dirt opening 5222
The inner wall of cylinder 51 is detached from flue gas.
Optionally, as shown in figure 17, reducing-flow structure further includes the second choked flow bank 5216, and the second choked flow bank 5216 passes through connection
Section 5217 is connect on the blade of swirl vane 521 along 5213, and the second choked flow bank 5216 is located at the top of swirl vane 521.
Second choked flow bank 5216 is similar with the effect of the first choked flow bank 5215, is all that the dust and drop in prevention flue gas continue with flue gas
It is mobile.Swirl vane 521 can only be arranged the first choked flow bank 5215 or the second choked flow bank 5216 is only arranged, can also be simultaneously
Setting, as shown in figure 18.
When dedusting demisting unit 5 has multiple eddy flow 52, the swirl vane of one or several eddy flow 52 can be made
Reducing-flow structure is set on 521, and the swirl vane of remaining eddy flow 52 is not provided with reducing-flow structure.Optionally, close to exhanst gas outlet
Reducing-flow structure is arranged in the swirl vane 521 of eddy flow 52 at place, this is because the powder being mingled in the flue gas of smoke outlet
The lighter in weight of dirt and drop, is easy as flue gas is mobile, by being arranged reducing-flow structure, the dust that these can be prevented lighter and
Drop continues to move to, and improves dedusting defogging effect.The quantity of eddy flow 52 with reducing-flow structure can according to need determination.Example
Such as, if desired guarantee that the flow velocity of exhanst gas outlet when dedusting demisting unit 5 works meets certain value, then can suitably reduce has resistance
The quantity of eddy flow 52 of flow structure reduces this is because reducing-flow structure can generate resistance to a certain extent for flow of flue gas
Flue gas flow rate.If exhanst gas outlet flow rates demand is not high, in order to promote dedusting defogging effect, then can suitably increase with choked flow knot
The quantity of eddy flow 52 of structure.
As shown in Figure 1, according to another aspect of the present invention, providing a kind of absorption tower comprising absorb tower shell 1 and dedusting
Demister, dedusting demister are above-mentioned dedusting demister.The absorption tower uses the swirl vane with multi-angle
Dedusting demister, so that fume treatment effect is more preferable, adaptive load ability is stronger, has preferable fume treatment effect.
Optionally, the bottom for absorbing tower shell 1 is adsorption tower smoke import 2, and top is adsorption tower smoke outlet 3.Along
Flow of flue gas direction absorbs in tower shell 1 and is disposed with braced frame 4, dedusting demister, water receiving pipe 7 and main flushing water
Pipe 6.
Wherein, braced frame 4, which is fixedly connected on, absorbs on tower shell 1, and is used to support dedusting demister.Dedusting demisting
Device includes multiple dedusting demisting units 5, and multiple dedusting demisting units 5 are along the radial close-packed arrays of cylinder 51.Braced frame 4
Gap between dedusting demisting unit 5 can be blocked, flue gas is made to have to pass through the exhaust gases passes of dedusting demisting unit 5,
So that it is guaranteed that fume treatment effect.
Optionally, dedusting demisting unit 5 can also be sequentially connected along the axial direction of cylinder 51, can increase the place of flue gas in this way
Stroke is managed, guarantees treatment effect.
Water receiving pipe 7 is used to connect the wash tub pipe 53 of main wash tub pipe 6 and each dedusting demisting unit 5, for flushing water
Pipe 53 supplies water.Water receiving pipe 7 can be hose.Main wash tub pipe 6 rinses water system with outside and is connected, and is interrupted with stored program control system to each
Dedusting demisting unit 5 is rinsed.
New multistage eddy flow tube type dust removing demister upper end is equipped with sealing device 9, prevents flue gas from each dedusting demisting list
It escapes in gap between member and between dedusting demisting unit and absorption tower tower wall without dedusting demisting.
The absorption tower course of work is as follows:
Flue gas after desulfurization spray washing, from bottom to top by having the tube type dust removing demister of Multi-stage spiral, gas
It flows by the eddy flow period of the day from 11 p.m. to 1 a.m in it, is changed into swirling eddy, under the action of the centrifugal force, dust and drop in flue gas etc. are got rid of
Onto the inner wall of cylinder 51, liquid film is formed, and accumulates biggish particle (comprising drop and dust etc.), under the effect of gravity,
Particles fall realizes the purpose of dust, droplet in removal flue gas, reaches the standard of ultra-clean discharge.
It can choose several dedusting demisting units 5 according to the exhaust gas volumn that need to be handled and be arranged in juxtaposition into novel Multi-stage spiral
Sub- tube type dust removing demister.
Dedusting demister according to the present invention and absorption tower have the following technical effect that
The swirl vane for changing eddy flow, makes it have multidirectional angle, and drop and dust is made to be easier to be centrifuged
Power, and tend to gather dust for cylinder.
The downside on edge and/or upside setting stop drop and dust to continue the choked flow bank with flow of flue gas on blade, make
Drop and dust separate before leaving swirl vane with flue gas and are guided to flow to cylinder inboard wall, thus along cylinder inboard wall fall and
It is removed.
Dirt opening is provided between cyclone cover cylinder forward spin flow blade, holds that the drop agglomerated on swirl vane and dust more
The inner wall of cylinder is easily reached across cover cylinder.
The installation space that the sub- tube type dust removing demister of the Multi-stage spiral requires is small, and load is light, is equivalent to and removes in routinely
Dirt demister, can absorption tower is not expanding do not increase load in the case where install, but dedusting demisting efficiency is removed much higher than conventional
Dirt demister, it can be ensured that outlet dust≤5mg/N.m3, implement ultra-clean discharge.The sub- tube type dust removing demisting of new multistage eddy flow
Device can be with standardized designs, manufacture, modularization installation.Invest low, operating cost is low, and maintenance is simple, high reliablity.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of dedusting demister, which is characterized in that including dedusting demisting unit (5), dedusting demisting unit (5) packet
It includes:
Cylinder (51), the cylinder (51) have exhaust gases passes；
Eddy flow (52), the eddy flow (52) are arranged in the exhaust gases passes, and the eddy flow (52) includes multiple eddy flows
Blade (521), each swirl vane (521) has root of blade (5211) and blade tip (5212), along the blade root
Portion (5211) arrives the direction of the blade tip (5212), at least one described swirl vane (521) and the cylinder (51) are horizontal
The angle in section is gradually increased or reduces.
2. dedusting demister according to claim 1, which is characterized in that arrive the leaf along the root of blade (5211)
The direction of piece end (5212), at least one described swirl vane (521) and the angle of the cylinder (51) cross section gradually increase
Greatly.
3. dedusting demister according to claim 1, which is characterized in that each swirl vane (521) also has leaf
On piece arrives the direction of the blade lower edge (5214) along (5213) and blade lower edge (5214) along the blade along (5213),
The angle of at least one described swirl vane (521) and the cylinder (51) cross section is gradually increased or reduces.
4. dedusting demister according to claim 1, which is characterized in that each swirl vane (521) also has leaf
On piece connects on (5213) in (5213) and blade lower edge (5214), the blade of at least one swirl vane (521)
There is the reducing-flow structure that can stop at least partly dust and/or drop.
5. dedusting demister according to claim 4, which is characterized in that the reducing-flow structure includes the first choked flow bank
(5215), the first choked flow bank (5215) is connected on the blade of the swirl vane (521) on (5213), and to described
Lower section on blade along (5213) extends.
6. dedusting demister according to claim 4 or 5, which is characterized in that the reducing-flow structure further includes the second resistance
It flows bank (5216), edge on the blade that the second choked flow bank (5216) passes through linkage section (5217) and the swirl vane (521)
(5213) it connects, and the second choked flow bank (5216) is located at the top of the swirl vane (521).
7. dedusting demister according to claim 1, which is characterized in that the blade lower edge of the swirl vane (521)
(5214) value range of the angle of edge line and horizontal plane is 0 ° to 30 °.
8. dedusting demister according to claim 1, which is characterized in that the eddy flow (52) further includes cyclone cover cylinder
(522), the swirl vane (521) is mounted in the cyclone cover cylinder (522), and the blade end of the swirl vane (521)
Portion (5212) is connect with the cyclone cover cylinder (522).
9. dedusting demister according to claim 8, which is characterized in that be provided with out on the cyclone cover cylinder (522)
Dirt is open (5222), and the dirt opening (5222) out runs through the cyclone cover cylinder (522), the leaf of each swirl vane (521)
The dirt opening (5222) out is correspondingly arranged below piece end (5212).
10. dedusting demister according to claim 8, which is characterized in that the outside wall surface of the cyclone cover cylinder (522) with
There is gap between the inner wall of the cylinder (51)；And/or
It is provided with connecting rod (523) on the outer wall of the cyclone cover cylinder (522), the cyclone cover cylinder (522) passes through the connection
Bar (523) is connect with the cylinder (51).
11. dedusting demister according to claim 8, which is characterized in that the cross section shape of the cyclone cover cylinder (522)
Shape is identical as the cross-sectional shape of the cylinder (51).
12. according to claim 1 or dedusting demister described in 11, which is characterized in that the cross section shape of the cylinder (51)
Shape is that the cross-sectional shape of the round or described cylinder (51) is regular polygon.
13. dedusting demister according to claim 8, which is characterized in that the cross-sectional shape of the cylinder (51) is
Regular polygon, the cross-sectional shape of the cyclone cover cylinder (522) are circle.
14. dedusting demister according to claim 8, which is characterized in that the eddy flow (52) further includes central tube
(524), the root of blade (5211) of the swirl vane (521) is connected on the central tube (524).
15. dedusting demister according to claim 1, which is characterized in that the dedusting demisting unit (5) further includes punching
Wash water pipe (53), wash tub pipe (53) setting are prolonged at the center of the cylinder (51), and along the axial direction of the cylinder (51)
It stretches, the wash tub pipe (53) passes through eddy flow (52), and the eddy flow (52) is at least one, and along the flushing water
The length direction of pipe (53) is successively spaced setting.
16. dedusting demister according to claim 15, which is characterized in that the dedusting demisting unit (5) further includes
At least one flooding nozzle (54), the flooding nozzle (54) are arranged on the wash tub pipe (53).
17. dedusting demister according to claim 1, which is characterized in that the dedusting demisting unit (5) be it is multiple,
And along the radial close-packed arrays of the cylinder (51)；And/or the dedusting demisting unit (5) is multiple, and along the cylinder
(51) axial direction is sequentially connected.
18. a kind of absorption tower, which is characterized in that including absorbing tower shell (1) and dedusting demister, the dedusting demister
For dedusting demister described in any one of claim 1-17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710891986.XA CN109550320A (en) | 2017-09-27 | 2017-09-27 | Dedusting demister and absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710891986.XA CN109550320A (en) | 2017-09-27 | 2017-09-27 | Dedusting demister and absorption tower |
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| Publication Number | Publication Date |
|---|---|
| CN109550320A true CN109550320A (en) | 2019-04-02 |
Family
ID=65864035
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710891986.XA Pending CN109550320A (en) | 2017-09-27 | 2017-09-27 | Dedusting demister and absorption tower |
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| Country | Link |
|---|---|
| CN (1) | CN109550320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477009A (en) * | 2021-07-20 | 2021-10-08 | 江苏华星电力环保设备有限公司 | Wet-type dust removal defogging integrated device |
-
2017
- 2017-09-27 CN CN201710891986.XA patent/CN109550320A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477009A (en) * | 2021-07-20 | 2021-10-08 | 江苏华星电力环保设备有限公司 | Wet-type dust removal defogging integrated device |
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