CN108067047A - A kind of efficient defogging equipment - Google Patents
A kind of efficient defogging equipment Download PDFInfo
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- CN108067047A CN108067047A CN201610990976.7A CN201610990976A CN108067047A CN 108067047 A CN108067047 A CN 108067047A CN 201610990976 A CN201610990976 A CN 201610990976A CN 108067047 A CN108067047 A CN 108067047A
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- riser
- wall
- rectification
- outer barrel
- gas
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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
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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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
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
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- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses one efficient kind of defogging equipments.The defogging equipment includes several demisting components, each demisting component includes riser and outer barrel, outer barrel is arranged on the outside of riser, and, riser is fixed on tower tray with riser on the same axis, the top of riser, which is set, covers plate, bottom sets lower capping plate, air admission hole is uniformly provided on the circumference of riser lower end, the riser inner wall of air inlet position sets air inlet deflector, and the provided circumferentially about of riser upper end has rectification passage.The defogging equipment of the present invention realizes the separation of drop and gas by rectification, acceleration and shaving effect of the fluid in flow process.The defogging equipment of the present invention is simple in structure, easy for installation, less scaling, can effectively realize gas-liquid separation, reduces entrainment, is particularly suitable for the larger occasion of gas flow fluctuations.
Description
Technical field
The present invention relates to a kind of gas-liquid separation equipment, especially a kind of efficient defogging equipment.
Background technology
Substantial amounts of SO is generated in the production process of the industries such as electric power, metallurgy, petrochemical industry2With the harmful substances such as dust, bring
Serious acid rain harm and haze weather are the atmosphere pollutions of the current priority control in China.At present, field of Environment Protection generally uses
Wet desulfurizing process removes the harmful substances such as the sulfur dioxide in flue gas, i.e., sprays lye to flue gas so as to absorb or adsorb this
A little harmful substances.With a large amount of grain sizes it is about 10~60 micro- in the flue gas after the desulfurization of absorption tower however, in process of wet desulphurization
The fine drop of rice, dissolved with sulfuric acid, sulfate, SO in these drops2Deng, atmospheric environment can not only be polluted, while
More serious corrosion and fouling are caused to follow-up equipment.When therefore, using wet desulfurizing process, cleaned gas is leaving suction
Demisting is had to before receiving tower, and demister is depended on the step for demisting to complete.
Demister is generally located at the top of absorption tower, when the gas containing mist passes through demister with certain speed, meeting
Bump against with demister internal structure, and depend in its surface.Mist on demister internal structure surface, by spreading and again
The effect of power can progressively be assembled, and after weight reaches certain level, will be separated from demister internal structure, so as to real
Existing gas-liquid separation.When demister in the process of running because fouling due to resistance drop is caused to increase to predetermined value when, it is necessary to start anti-
Cleaning procedure is rinsed demister, generally, is both needed to set flooding nozzle in demister inlet end and exhaust end, at this time may
Cause serious entrainment of the gas phase to liquid phase, cause gas phase band liquid.
Common demister has mesh mist eliminator, collapser demister, rotational flow plate defroster etc..Although mesh mist eliminator energy
General mist is separated, but requires mist cleaning, air-flow velocity smaller, and resistance drop is big, service life is short, and equipment investment is big.
Demister generally all uses horizontally disposed at present, and demister gas flow direction is vertical with silk screen, when gas velocity is relatively low, the mist of entrainment
Foam inertia is small, drifts in gas, it is impossible to silk screen making contact and be removed, and due to by separation drop and gas phase in inverse
Stream flow direction, gas are also easy to produce reentrainment to drop, so that gas-liquid separation efficiency reduces, and mesh mist eliminator also has appearance
The problems such as easily blocking, pressure drop is big.The folding that direction is different, shape is different is installed inside blade type, herringbone demister
Flowing plate to form small runner, increases defogging effect, structure is more complicated, and separating effect is bad.Rotational flow plate defroster is by separating liquid
Drop is identical with gas flow, is also easy to produce reentrainment, reduces demisting efficiency, and pressure drop is big, and energy consumption is higher.
The demister element that CN200410014713.X is introduced is made of baffle plate and flue gas flow field adjustment block, and baffle plate is fixed
In flue gas flow field adjustment block, the density and shape of baffle plate change according to the flow area variation of flow field parameter everywhere, from
And the flow area of air-flow in absorption tower is made to be evenly distributed, but still do not break away from drop descent, gas-liquid counter current is existing
As being also easy to produce reentrainment.
The demister that CN200920128824.1 is introduced is made of cooler, coarse defogging device and smart demister etc., coarse defogging
Device is corrugated sheet or demisting plate, and smart demister is steel wire, which changes traditional demister drop and airflow direction is inverse
The shortcomings that stream flowing, improve demisting efficiency.But the demister structure is more complicated, makes difficulty, and as a result of silk screen
Structure, demister pressure drop is larger, is also easier to block.
A kind of straight tube shape deflector type demister that CN203724892U is introduced is made of several demisting components, each demisting
Component includes riser and outer barrel, and the circumference of riser is provided with several seams, is set on the riser circumference close to each item seam
Groove and the tangential flow guiding wing are equipped with, the tangential flow guiding wing plays guide functions, gas flow is made to change.It is being flowed over by fluid
Multiple baffling in journey realizes the separation of drop and gas, can effectively remove the smaller drop of grain size, demisting efficiency is higher.But
After gas flows through the tangential flow guiding wing, gas direction still compares diverging, not enough concentrate, and gas velocity reduce, then with outer tube inner wall
Impact force is smaller during collision, influences defogging effect.The demister, which relies primarily on baffling, changes gas direction, and then gas is with consolidating
Body wall face collides so as to fulfill gas-liquid separation, preferable for larger drop defogging effect but unknown for droplet effect
It is aobvious, and the demister structure is more complicated, the easy fouling in gap between riser and the tangential flow guiding wing.
US7618472B2 provides a kind of vane-type demister, and the demister is by structures such as corrugated sheet, tablet and louver boards
Into, and form many cavitys or runner.After gas-liquid mixture enters demister, fluid course shifts so that fluid flows to
Changed for several times, and velocity variations obtain very fast, and liquid phase is easy to separate from gas phase.The technology liquid phase and gas phase point
From in the process, can realizing gas liquid cross-flow, therefore gas phase substantially reduces the reentrainment effect of drop, but the technical pattern
Extremely complex, difficulty of processing is also bigger, and corresponding processing and fabricating expense is higher.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of efficient defogging equipment, by fluid in flow process
Rectification, acceleration and shaving effect, realize the separation of drop and gas.The defogging equipment of the present invention is simple in structure, and pressure drop is small, no
Easy fouling, it is easy for installation, reduce entrainment, can effectively realize gas-liquid separation, be particularly suitable for gas flow fluctuations compared with
Big occasion.
The efficient defogging equipment of the present invention includes several demisting components arranged side by side, and each demisting component includes riser
And outer barrel, outer barrel are arranged on the outside of riser, preferably with riser on the same axis；Riser is fixed on tower tray, is risen
Tracheae bottom is less than tower tray certain distance, and the top of riser, which is set, covers plate, and bottom sets lower capping plate；Tower tray is with top
Several rectification passages are uniformly arranged on the circumference of the riser divided, rectification passage is embedding along the tangential direction level of riser outer wall
Enter, side wall I and riser tube wall of the rectification passage close to outer barrel one side are tangent, and another side wall II intersects with riser tube wall, respectively
Rectification passage direction of rotation is identical；Rectification channel roof is flushed with upper capping plate, and bottom is intersected with riser tube wall；Below tower tray
Several air admission holes are uniformly provided on the circumference of partial riser, air inlet deflector is set on the riser inner wall of air inlet position.
In the defogging equipment of the present invention, the rectification passage generally sets 1 ~ 12, preferably 4-8.Rectification passage
Wall thickness is preferably identical with the wall thickness of riser.
In the defogging equipment of the present invention, the length l of rectification passage is the length of side wall II, and width w is rectification passage both sides
Maximum horizontal range between wall, maximum normal distances of the height h between rectification channel roof and bottom；Wherein length l is width w
2 ~ 5 times, be preferably 3 ~ 4 times；The cross sectional shape of rectification passage is rectangle, ellipse, circle, it is trapezoidal or semicircle etc. in one
Kind or several combinations, one or more of preferably rectangular, oval or circular combination.The size of rectification passage is according to reality
Operating mode or design requirement, determined by those skilled in the art, the height h of such as rectification passage is generally 20~
600mm is preferably 100~300mm；The width w of rectification passage is generally 10~200mm, is preferably 20~100mm.Rectification is led to
The total sectional area in road is 0.2 ~ 0.9 times of riser cross-sectional area, is preferably 0.3 ~ 0.6 times of riser cross-sectional area.
In the defogging equipment of the present invention, the side wall II ends of the rectification passage can flush or stretch with riser inner wall
Enter to un-obstructed draft tube interior certain distance m, m is 0.1 ~ 0.9 times of length l, is preferably 0.3 ~ 0.6 times.When the side wall of rectification passage
When II ends are flushed with riser inner wall, rectification channel bottom end is also flushed with riser inner wall；When the side wall of rectification passage
When II extend into un-obstructed draft tube interior certain distance m, rectification channel bottom end is flushed with side wall end.
In the defogging equipment of the present invention, it is 20~200mm that rectification channel bottom has certain distance A, distance A apart from tower tray,
Preferably 40~80mm.
In the defogging equipment of the present invention, the air admission hole generally sets 3 ~ 12, preferably 4-8.The section of air admission hole
Shape is rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, preferably rectangular, oval or circle
The combination of one or more of shape.The total sectional area of air admission hole is 0.6 ~ 1.5 times of riser sectional area, preferably 0.8 ~ 1.2 times,
Specific size is determined according to actual operating mode or design requirement by those skilled in the art.
In the defogging equipment of the present invention, the air inlet deflector is axially disposed within air inlet bore edges along riser, passes through
Connector is connected with riser inner wall.The connector is made of baffle and shaft, and baffle is along riser axial direction and riser
Inner wall is fixedly connected, and air inlet deflector is connected by shaft with baffle, and air inlet deflector can be rotated around shaft, air inlet water conservancy diversion
The maximum angle that plate rotates is baffle position；Two mid point of curve lines above and below in air admission hole and riser outer wall intersection
The angle of the section of the riser outer wall done and the baffle plane close to air admission hole one side is γ, and γ is 10 ° ~ 60 °, preferably
20°~35°。
In the defogging equipment of the present invention, the rotation direction of each air inlet deflector is identical with rectification passage, the shape of air inlet deflector
Can be rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, preferably the shape phase with air admission hole
Together, air inlet deflector sectional area is 1.1 ~ 2 times, preferably 1.3 ~ 1.5 times of air admission hole sectional area.
In the defogging equipment of the present invention, lower capping plate（Riser bottom）Have a certain distance K away from tower tray, distance K for 60~
200mm is preferably 80~120mm.
In the defogging equipment of the present invention, riser and tower tray airtight connection, the diameter of riser and the percent opening of tower tray can
According to actual operating mode or design requirement, to be determined by those skilled in the art.
In the defogging equipment of the present invention, the rectification passage, upper capping plate, lower capping plate and riser can be welded on
Together or global formation.
In the defogging equipment of the present invention, the outer barrel is preferably cylinder, and outer barrel diameter D is the 1.5-6 of draft tube diameter d
Times, it is preferably 2-3 times.The upper edge of outer barrel be higher by riser on along certain distance P, distance P is the 1~8 of rectification channel height h
Times, it is preferably 2~5 times.The lower edge of outer barrel has a certain distance B apart from tower tray, and less than the lower edge of rectification passage, outer barrel lower edge away from
The distance B of tower tray is 5~100mm, is preferably 20~50mm.The overall height H of outer barrel is 2.5~10 times of rectification channel height,
Preferably 3~5 times.The shape of outer barrel can also be one or more of cone cylinder, inversed conical drum or reducing cylinder etc. combination.
In the defogging equipment of the present invention, the inner surface of the outer barrel sets groove and/or protrusion.Protrusion or groove with it is outer
The axis of cylinder is parallel or can form an angle with axis.The groove or the section of protrusion can also be rectangle, triangle
The suitable shapes such as shape or circle.
In the defogging equipment of the present invention, the inner surface of the outer barrel is preferably provided with the recessed of cross sectional shape as shown in Figure 5
Slot, the section of the groove are made of a circular arc and straight line section；The intersection point of wherein circular arc and outer tube inner surface circumference is distinguished
Do the tangent line of circular arc and circumference, the angle between tangent line is α, and α is 5 ° ~ 70 °, is preferably 10 ° ~ 40 °；Circular arc and straightway intersection point
The tangent line for the circular arc that place is done and the angle of straightway are β, and β is 30 ° ~ 110 °, is preferably 45 ° ~ 90 °.The depth Z of groove, i.e.,
Circular arc is 0.1 ~ 0.7 times of outer barrel wall thickness with the beeline on straightway intersection point to outer tube inner surface circumference, preferably 0.3 ~
0.5 times；Arc length between the intersection point and straightway of circular arc and outer tube inner surface circumference and the intersection point of outer tube inner surface circumference is outer barrel
The 1/80 ~ 1/6 of inner surface circumference.
In the defogging equipment of the present invention, the lower ending opening of the outer barrel can also set toothing or waveform knot
Structure drips so as to be more conducive to the liquid isolated from the inner wall of outer barrel into continuous flow.
The junction of each component of defogging equipment of the present invention ensures sealing, does not generate gas leak phenomenon.
The defogging equipment of the present invention, during work, the gas of entrained drip from the air admission hole of tower tray lower end in the horizontal direction into
Enter riser, gas phase flow direction is changed to tangential direction by radial direction after running into air inlet deflector, since air inlet deflector can
To rotate, therefore can corner be automatically adjusted according to the uninterrupted of gas, be conducive to gas and spiral upwards along riser inner wall
Flowing, enhances eddy flow effect.Partial drop collides with air inlet deflector in the process, makes some droplets in air inlet
Attachment and coalescence, the drop of attachment become larger on deflector, its own gravity generated of a part of larger drop is more than gas
The climbing power of body and when making a concerted effort of surface tension of liquid, drop will be fallen to be separated along air inlet baffle surface, i.e., complete
Into first time gas-liquid separation；The larger drop of another part then continues to flow with gas, along riser inner wall disc spins
It flows up.When the gas of entrained drip rises in riser, gas phase flow direction changes again after running into capping plate,
Part droplet and upper capping plate collision, and then complete second of gas-liquid separation；There is part droplet coalescence to become again simultaneously
Larger drop, and continue to flow with gas.The gas of entrained drip enters rectification passage along horizontal or level of approximation direction, due to
Rectification passage has certain length, and rectification passage total sectional area is less than riser cross-sectional area, and script directional velocity compares point
The gas of scattered entrained drip, after rectification passage is entered, directional velocity is changed to along the direction of rectification passage, directional velocity ratio
Relatively regular and concentration, and since circulation area reduces, the gas of entrained drip is made to enter speed increase after rectification passage.Carry liquid secretly
When the directional velocity of the gas of drop changes, partial drop collides with rectification vias inner walls, and is attached to rectification vias inner walls
On, and then constantly flowed through the gas blowout rectification passage of rectification passage and fallen, complete third time gas-liquid separation.Meanwhile
In rectification passage, since the gas velocity direction of entrained drip changes, part droplet occurs mutually to touch under inertia force effect
It hits, droplet aggregation becomes big drop, and speed increases during the gas stream rectified passage of entrained drip, exacerbates the fortune of drop
It is dynamic, the probability that droplet mutually collides is improved, droplet is made to be easier to assemble as big drop, and with gas with larger
Speed outflow rectification passage.The gas of the entrained drip flowed out from rectification passage has larger speed, and directional velocity compares
It concentrates, and the drop carried secretly is bigger, continuation collides with outer tube inner wall, changes the flow direction of gas again, that is, carries secretly
The gas of drop is by being changed to the circumferencial direction flowing along outer tube inner wall along rectification channel direction.Due to the gas of entrained drip
Speed is larger, and is flowed up along reeded outer tube inner wall rotation is opened up, therefore can generate obvious shaving effect.
The shaving effect, refer to the high-speed gas of entrained drip along outer tube inner wall rotation flow up when, drop is in inertia force
Outer is constantly thrown toward under effect, drop enters groove and is moved along the arc section in groove, since angle α is 5 ° ~ 70 °, energy
The arc surface that drop continues on groove is enough made to do and smoothly move, between drop contact aggregation become larger, until run into straightway by
To obstruction, assemble the drop to become larger and hit strongly with straightway wall surface, and be attached on the straightway of outer tube inner wall groove, drop
Continue to assemble and become larger, and then go downstream along outer tube inner wall；And gas then continues to keep to rotate upwards along outer tube inner wall at a high speed
Flowing, realizes gas-liquid separation, and reduces entrainment for the 4th time.By above-mentioned rectification, acceleration and shaving effect, make stream
Body realizes the separation of drop and gas in flow process.
Application of the defogging equipment of the present invention in the absorption tower using wet desulfurizing process generally enters the gas of riser
Speed is 3-20m/s, and the gas velocity of rectification channel outlet is 10-40m/s, and the gas velocity of rectification channel outlet is the gas velocity into riser
1.5 ~ 3 times.
Compared with prior art, defogging equipment of the invention has the following advantages：
1st, there is lower capping plate in riser lower end, and riser lower circumferential direction is uniformly provided with several air admission holes, the liter of air inlet position
Inner surface of trachea sets several air inlet deflectors, and after gas is made to enter riser in the horizontal direction, running into air inlet deflector makes gas phase
Flow direction is changed to tangential direction by radial direction, can be according to the flow of gas since air inlet deflector can rotate
Size automatically adjusts the corner of air inlet deflector within the specific limits, is more advantageous to gas and spirals along riser inner wall to upstream
It is dynamic, eddy flow effect is enhanced, is particularly suitable for the larger occasion of gas flow fluctuations.
2nd, rectification passage has certain length, and the gas of the more dispersed entrained drip of script directional velocity is whole entering
After circulation road, directional velocity is changed to along the direction of rectification passage, directional velocity comparison rule and concentration；And rectification passage is always cut
Area is less than riser cross-sectional area, since circulation area reduces, the gas of entrained drip is made to enter speed increasing after rectification passage
Add.The section of cylinder inner surface groove is made of a circular arc and straight line section, and the high-speed gas of entrained drip are along outer barrel
When wall rotation flows up, drop is constantly thrown toward outer under the action of inertia force, and drop enters groove and along groove
Arc section moves, and since angle α is 5 ° ~ 70 °, the arc surface that drop continues on groove can be made to do smooth movement, until
Run into straightway it is hindered after go downstream along outer tube inner wall, and without dead zone exist.
3rd, by multistage demisting, efficiently achieve the effect that demisting, effectively remove the smaller liquid of grain size carried secretly in gas
Drop, demisting efficiency is high, reduces the harm to environment, plays the role of environmental protection.
4th, gas flow uniform, flow resistance is small, and resistance reduces.
5th, it is simple in structure, it is easy to make, it is not easy to plug and fouling, without backwash.
6th, water-saving result is good, and the moisture removed from the gas of entrained drip can reduce water consumption with recycling.
Description of the drawings
Fig. 1 is the defogging equipment structure diagram of the present invention.
Fig. 2 is the schematic cross-section of air admission hole and air inlet deflector.
Fig. 3 is the schematic cross-section for the defogging equipment that rectification passage is flushed with inner wall.
Fig. 4 is the schematic cross-section for the defogging equipment that rectification passage stretches into un-obstructed draft tube interior.
Fig. 5 is that section is the groove schematic diagram that circular arc and straightway are formed.
In figure respectively mark for：1- tower trays；2- riseies；3- rectification passages；4- outer barrels；Plate is covered on 5-；6- grooves；7- into
Conductance flowing plate；8- air admission holes；Plate is covered under 9-；10- connector baffles；11- connector shafts.
Specific embodiment
The defogging equipment of the present invention is described in further detail with reference to the accompanying drawings and examples.
The efficient defogging equipment of the present invention includes several demisting components arranged side by side, and each demisting component includes riser
2 and outer barrel 4, outer barrel 4 be arranged on the outside of riser 2, preferably with riser 2 on the same axis；Riser 2 is fixed on tower tray
On 1,2 bottom of riser is less than 1 certain distance of tower tray, and the top of riser 2, which is set, covers plate 5, and bottom sets lower capping plate
9；It is uniformly arranged several rectification passages 3 on the circumference of the riser 2 of 1 above section of tower tray, rectification passage 3 is along 2 outer wall of riser
Tangential direction it is horizontal embedded, side wall I and riser 2 tube wall of the rectification passage 3 close to 4 one side of outer barrel are tangent, another side wall II
Intersect with 2 tube wall of riser, each 3 direction of rotation of rectification passage is identical；The top of rectification passage 3 is flushed with upper capping plate 5, bottom and
2 tube wall of riser intersects；Tower tray 1 is to be uniformly provided with several air admission holes 8 on the circumference of the riser 2 of lower part, at air admission hole 8
Air inlet deflector 7 is set on 2 inner wall of riser.
In the defogging equipment of the present invention, the rectification passage 3 generally sets 1 ~ 12, preferably 4-8.Rectification passage 3
Wall thickness it is preferably identical with the wall thickness of riser 2.
In the defogging equipment of the present invention, the length l of rectification passage 3 is the length of side wall II, and width w is 3 liang of rectification passage
Maximum horizontal range between side wall, height h are the maximum normal distance between 3 top and bottom of rectification passage；Wherein length l is width
Spend w 2 ~ 5 times are preferably 3 ~ 4 times；The cross sectional shape of rectification passage 3 is rectangle, ellipse, circle, it is trapezoidal or semicircle etc. in
One or more combination, one or more of preferably rectangular, oval or circular combination.The size root of rectification passage 3
The factually operating mode or design requirement on border, is determined by those skilled in the art, and the height h of such as rectification passage 3 is generally
20~600mm is preferably 100~300mm；The width w of rectification passage 3 is generally 10~200mm, is preferably 20~100mm.It is whole
The total sectional area of circulation road 3 is 0.2 ~ 0.9 times of 2 cross-sectional area of riser, is preferably the 0.3 ~ 0.6 of 2 cross-sectional area of riser
Times.
The present invention defogging equipment in, the side wall II ends of the rectification passage 3 can be flushed with 2 inner wall of riser or
It is 0.1 ~ 0.9 times of length l to extend into riser 2 inside certain distance m, m, is preferably 0.3 ~ 0.6 times.When rectification passage 3
When side wall II ends are flushed with 2 inner wall of riser, 3 bottom end of rectification passage is also flushed with 2 inner wall of riser；When rectification passage
When 3 side wall II extend into 2 inside certain distance m of riser, 3 bottom end of rectification passage is flushed with side wall end.
In the defogging equipment of the present invention, 3 distance from bottom tower tray 1 of rectification passage has a certain distance A, distance A for 20~
200mm is preferably 40~80mm.
In the defogging equipment of the present invention, the air admission hole 8 generally sets 3 ~ 12, preferably 4-8.Air admission hole 8 is cut
Face shape is rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, it is preferably rectangular, oval or
The combination of one or more of circle.The total sectional area of air admission hole 8 is 0.6 ~ 1.5 times of 2 sectional area of riser, preferably 0.8 ~
1.2 times, specific size is determined according to actual operating mode or design requirement by those skilled in the art.
In the defogging equipment of the present invention, the air inlet deflector 7 is axially disposed within 8 edge of air admission hole along riser 2, leads to
Connector is crossed to be connected with 2 inner wall of riser.The connector is made of baffle 10 and shaft 11, and baffle 10 is along 2 axis of riser
It is fixedly connected to 2 inner wall of riser, air inlet deflector 7 is connected by shaft 11 with baffle 10, and air inlet deflector 7 can be around
Shaft 11 rotates, and the maximum angle that air inlet deflector 7 rotates is 10 position of baffle；Air admission hole 8 is mutually passed through with 2 outer wall of riser
The section for 2 outer wall of riser that two mid point of curve lines are done and 10 plane of baffle close to 8 one side of air admission hole above and below in line
Angle be γ, γ is 10 ° ~ 60 °, preferably 20 ° ~ 35 °.
In the defogging equipment of the present invention, the rotation direction of each air inlet deflector 7 is identical with rectification passage 3, the shape of air inlet deflector 7
Shape can be rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, the preferably shape with air admission hole 8
Identical, 7 sectional area of air inlet deflector is 1.1 ~ 2 times of 8 sectional area of air admission hole, preferably 1.3 ~ 1.5 times.
In the defogging equipment of the present invention, lower capping plate 9（2 bottom of riser）It is 60 to have certain distance K, distance K away from tower tray 1
~200mm is preferably 80~120mm.
In the defogging equipment of the present invention, riser 2 and 1 airtight connection of tower tray, the perforate of the diameter and tower tray 1 of riser 2
Rate can be determined according to actual operating mode or design requirement by those skilled in the art.
In the defogging equipment of the present invention, the rectification passage 3, upper capping plate 5, lower capping plate 9 can be welded with riser 2
It is connected together or global formation.
In the defogging equipment of the present invention, the outer barrel 4 is preferably cylinder, and 4 diameter D of outer barrel is 2 diameter d's of riser
1.5-6 times, be preferably 2-3 times.The upper edge of outer barrel 4 be higher by riser 2 on along certain distance P, distance P is high for rectification passage 3
Spend h 1~8 times is preferably 2~5 times.The lower edge of outer barrel 4 has certain distance B apart from tower tray 1, and less than under rectification passage 3
Edge, distance B of 4 lower edge of outer barrel away from tower tray 1 are 5~100mm, are preferably 20~50mm.The overall height H of outer barrel 4 is rectification passage 3
2.5~10 times of height are preferably 3~5 times.The shape of outer barrel 4 can also be one in cone cylinder, inversed conical drum or reducing cylinder etc.
Kind or several combinations.
In the defogging equipment of the present invention, the inner surface of the outer barrel 4 sets groove 6 and/or protrusion.Protrusion or groove 6
It is parallel with the axis of outer barrel 4 or can form an angle with axis.The groove 6 or the section of protrusion can also be square
The suitable shapes such as shape, triangle or circle.
In the defogging equipment of the present invention, the inner surface of the outer barrel 4 is preferably provided with the recessed of cross sectional shape as shown in Figure 5
Slot 6, the section of the groove 6 are made of a circular arc and straight line section；The wherein intersection point point of circular arc and 4 inner surface circumference of outer barrel
Do not do the tangent line of circular arc and circumference, the angle between tangent line is α, and α is 5 ° ~ 70 °, is preferably 10 ° ~ 40 °；Circular arc is handed over straightway
The tangent line of circular arc and the angle of straightway that point place is done are β, and β is 30 ° ~ 110 °, are preferably 45 ° ~ 90 °.The depth Z of groove 6,
I.e. circular arc and the beeline on straightway intersection point to 4 inner surface circumference of outer barrel are 0.1 ~ 0.7 times of 4 wall thickness of outer barrel, are preferably
0.3 ~ 0.5 times；Arc length between the intersection point of the 4 inner surface circumference of intersection point and straightway and outer barrel of 4 inner surface circumference of circular arc and outer barrel
For the 1/80 ~ 1/6 of 4 inner surface circumference of outer barrel.
In the defogging equipment of the present invention, the lower ending opening of the outer barrel 4 can also set toothing or waveform knot
Structure drips so as to be more conducive to the liquid isolated from the inner wall of outer barrel 4 into continuous flow.
The junction of each component of defogging equipment of the present invention ensures sealing, does not generate gas leak phenomenon.
The defogging equipment of the present invention, during work, the gas of entrained drip from the air admission hole 8 of 1 lower end of tower tray in the horizontal direction
Into riser 2, gas phase flow direction is changed to tangential direction by radial direction after running into air inlet deflector 7, due to air inlet water conservancy diversion
Plate 7 can rotate, therefore can automatically adjust corner according to the uninterrupted of gas, be conducive to gas along 2 inner wall disk of riser
Spin up flowing, enhance eddy flow effect.Partial drop collides with air inlet deflector 7 in the process, makes some small liquid
It drops in attachment and coalescence, the drop of attachment on air inlet deflector 7 to become larger, the weight of its own generation of a part of larger drop
Power is more than the climbing power of gas and when making a concerted effort of surface tension of liquid, and drop will fall along 7 surface of air inlet deflector so as to quilt
Separation, that is, complete first time gas-liquid separation；The larger drop of another part then continues to flow with gas, along riser 2
Inner wall disc spins flow up.When the gas of entrained drip rises in riser 2, gas phase flowing side after capping plate 5 is run into
To changing again, part droplet is collided with upper capping plate 5, and then completes second of gas-liquid separation；There is part again simultaneously
Droplet coalescence becomes larger drop, and continues to flow with gas.The gas of entrained drip along horizontal or level of approximation direction into
Enter rectification passage 3, since rectification passage 3 has certain length, and 3 total sectional area of rectification passage is less than 2 cross-sectional area of riser,
The gas of the more dispersed entrained drip of script directional velocity, after rectification passage 3 is entered, directional velocity is changed to lead to along rectification
The direction in road 3, directional velocity comparison rule and concentration, and since circulation area reduces, the gas of entrained drip is made to enter rectification
Speed increases after passage 3.When the directional velocity of the gas of entrained drip changes, partial drop is touched with 3 inner wall of rectification passage
It hits, and is attached on 3 inner wall of rectification passage, and then constantly flowed through the gas blowout rectification passage 3 of rectification passage 3 and fallen,
Complete third time gas-liquid separation.Meanwhile in rectification passage 3, since the gas velocity direction of entrained drip changes, the small liquid in part
It drops under inertia force effect and mutually collision occurs, droplet aggregation is as big drop, and the gas stream of entrained drip is rectified logical
Speed increases during road 3, exacerbates the movement of drop, improves the probability that droplet mutually collides, and droplet is made to be easier to assemble
As big drop, and with gas with larger speed outflow rectification passage 3.The entrained drip flowed out from rectification passage 3
Gas has larger speed, and directional velocity compares concentration, and the drop carried secretly is bigger, and continuation is touched with 4 inner wall of outer barrel
It hits, changes the flow direction of gas again, i.e., the gas of entrained drip along 3 direction of rectification passage by being changed to along in outer barrel 4
The circumferencial direction flowing of wall.It is rotated since the gas velocity of entrained drip is larger, and along 4 inner wall of outer barrel for opening up fluted 6
It flows up, therefore obvious shaving effect can be generated.The shaving effect refers to the high-speed gas edge of entrained drip
When the rotation of 4 inner wall of outer barrel flows up, drop is constantly thrown toward outer under the action of inertia force, and drop enters groove 6 and edge
Arc section movement in groove 6, since angle α is 5 ° ~ 70 °, can be such that the arc surface that drop continues on groove 6 does smoothly
It moves, aggregation is contacted between drop and is become larger, straightway is hindered until running into, and assembles the drop to become larger and straightway wall surface is strong
It hitting, and is attached on the straightway of 4 inboard wall groove 6 of outer barrel, drop continues to assemble and become larger, and then along 4 inner wall fair current of outer barrel
Under and；And gas then continues to keep to flow up along the rotation of 4 inner wall of outer barrel at a high speed, realizes gas-liquid separation for the 4th time, and drop
Low entrainment.By above-mentioned rectification, acceleration and shaving effect, fluid is made to realize point of drop and gas in flow process
From.
Embodiment one
Certain wet scrubber tower purifying smoke 150000Nm3/ h, wherein aobvious water concentration is 10~15g/Nm3, after demisting of the present invention
Water concentration is shown in exhaust<0.5g/Nm3, demisting efficiency >=95%.
Embodiment two
Certain wet scrubber tower purifying smoke 100000Nm3/ h, wherein aobvious water concentration is 12~16g/Nm3, after demisting of the present invention
Water concentration is shown in exhaust<0.6g/Nm3, demisting efficiency >=95%.
Claims (12)
1. a kind of efficient defogging equipment, including several demisting components arranged side by side, it is characterised in that：Each demisting component includes
Riser and outer barrel, outer barrel are arranged on the outside of riser；Riser is fixed on tower tray, and riser bottom is certain less than tower tray
Distance, the top of riser, which is set, covers plate, and bottom sets lower capping plate；On the circumference of the riser of tower tray above section
Even to set several rectification passages, the tangential direction of rectification passage along riser outer wall is horizontal embedded, and rectification passage is close to outer barrel one
The side wall I and riser tube wall of side are tangent, and another side wall II intersects with riser tube wall, and each rectification passage direction of rotation is identical；
Rectification channel roof is flushed with upper capping plate, and bottom is intersected with riser tube wall；Tower tray is on the circumference of the riser of lower part
Several air admission holes are uniformly provided with, air inlet deflector is set on the riser inner wall of air inlet position；The air inlet deflector edge rises
Tracheae is axially disposed within air inlet bore edges, is connected by connector with riser inner wall；The connector is by baffle and shaft
Composition, baffle are fixedly connected along riser is axial with riser inner wall, and air inlet deflector is connected by shaft with baffle, into conductance
The maximum angle that flowing plate rotates is baffle position.
2. defogging equipment described in accordance with the claim 1, it is characterised in that：Two above and below in air admission hole and riser outer wall intersection
The section for the riser outer wall that mid point of curve line is done and the angle of the baffle plane close to air admission hole one side are γ, and γ is
10°~60°。
3. defogging equipment described in accordance with the claim 1, it is characterised in that：The rotation direction of air inlet deflector is identical with rectification passage.
4. defogging equipment described in accordance with the claim 1, it is characterised in that：Air inlet deflector sectional area is air admission hole sectional area
1.1 ~ 2 times.
5. defogging equipment described in accordance with the claim 1, it is characterised in that：The rectification passage sets 1 ~ 12；Rectification is led to
The length l in road is the length of side wall II, and maximum horizontal ranges of the width w between rectification passage two side, height h is rectification passage
Maximum normal distance between top and bottom；Wherein length l is 2 ~ 5 times of width w；The cross sectional shape of rectification passage for rectangle,
One or more of oval, circular, trapezoidal or semicircle combination.
6. defogging equipment described in accordance with the claim 1, it is characterised in that：The total sectional area of rectification passage is riser cross section
Long-pending 0.2 ~ 0.9 times.
7. defogging equipment described in accordance with the claim 1, it is characterised in that：The air admission hole sets 3 ~ 12；Air admission hole
Cross sectional shape is rectangle, ellipse, circle, trapezoidal or one or more of semicircle combination.
8. defogging equipment described in accordance with the claim 1, it is characterised in that：The total sectional area of air admission hole is riser sectional area
0.6 ~ 1.5 times, preferably 0.8 ~ 1.2 times.
9. defogging equipment described in accordance with the claim 1, it is characterised in that：Lower capping plate has certain distance K, distance K away from tower tray
For 60~200mm.
10. defogging equipment described in accordance with the claim 1, it is characterised in that：The outer barrel is cylinder, and outer barrel diameter D is liter
1.5-6 times of tracheal diameter d；The upper edge of outer barrel be higher by riser on along certain distance P, distance P is rectification channel height h's
1~8 times；The lower edge of outer barrel has a certain distance B apart from tower tray, and less than the lower edge of rectification passage, outer barrel lower edge away from tower tray away from
It is 5~100mm from B；The overall height H of outer barrel is 2.5~10 times of rectification channel height.
11. defogging equipment described in accordance with the claim 1, it is characterised in that：The inner surface of the outer barrel set groove and/or
Protrusion.
12. defogging equipment described in accordance with the claim 1, it is characterised in that：The inner surface of the outer barrel sets cutting for groove
Face is made of a circular arc and straight line section；The intersection point of wherein circular arc and outer tube inner surface circumference does circular arc and circumference respectively
Tangent line, the angle between tangent line are α, and α is 5 ° ~ 70 °；The tangent line of the circular arc done at circular arc and straightway intersection point and straightway
Angle is β, and β is 30 ° ~ 110 °；The depth Z of groove, i.e. circular arc and the most short distance on straightway intersection point to outer tube inner surface circumference
From 0.1 ~ 0.7 times for outer barrel wall thickness；Circular arc and the intersection point and straightway of outer tube inner surface circumference and outer tube inner surface circumference
Arc length between intersection point is the 1/80 ~ 1/6 of outer tube inner surface circumference.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990976.7A CN108067047B (en) | 2016-11-11 | 2016-11-11 | High-efficient defogging equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990976.7A CN108067047B (en) | 2016-11-11 | 2016-11-11 | High-efficient defogging equipment |
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| Publication Number | Publication Date |
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| CN108067047A true CN108067047A (en) | 2018-05-25 |
| CN108067047B CN108067047B (en) | 2020-08-11 |
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| CN201610990976.7A Active CN108067047B (en) | 2016-11-11 | 2016-11-11 | High-efficient defogging equipment |
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| DE3137795A1 (en) * | 1981-09-23 | 1983-04-14 | Nova-Apparatebau GmbH + Co, 7710 Donaueschingen | Demister for air streams or gas streams and mount for the profiled lamellae of the demister |
| CN2396883Y (en) * | 1999-11-26 | 2000-09-20 | 南京大学 | Conical cyclone gas distributing machine |
| CN102728147A (en) * | 2012-06-08 | 2012-10-17 | 张宏生 | Horizontal centrifugal mist eliminator |
| CN102872655A (en) * | 2012-09-21 | 2013-01-16 | 兰州节能环保工程有限责任公司 | Gas-liquid separating device |
| CN203724892U (en) * | 2013-11-05 | 2014-07-23 | 中国石油化工股份有限公司 | Straight cylindrical baffling demister |
| CN104984597A (en) * | 2015-07-27 | 2015-10-21 | 航天环境工程有限公司 | Pneumatic-cyclone parallel-combination demister and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU360984A1 (en) * | 1970-06-01 | 1972-12-07 | С. Пентешин, А. А. Степурин , В. Рольщиков Конструкторский проектно технологический институт | UNSUNCED |
| DE3137795A1 (en) * | 1981-09-23 | 1983-04-14 | Nova-Apparatebau GmbH + Co, 7710 Donaueschingen | Demister for air streams or gas streams and mount for the profiled lamellae of the demister |
| CN2396883Y (en) * | 1999-11-26 | 2000-09-20 | 南京大学 | Conical cyclone gas distributing machine |
| CN102728147A (en) * | 2012-06-08 | 2012-10-17 | 张宏生 | Horizontal centrifugal mist eliminator |
| CN102872655A (en) * | 2012-09-21 | 2013-01-16 | 兰州节能环保工程有限责任公司 | Gas-liquid separating device |
| CN203724892U (en) * | 2013-11-05 | 2014-07-23 | 中国石油化工股份有限公司 | Straight cylindrical baffling demister |
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|---|---|
| CN108067047B (en) | 2020-08-11 |
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