CN108499226A - A kind of high efficiency demister - Google Patents
A kind of high efficiency demister Download PDFInfo
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- CN108499226A CN108499226A CN201710108907.3A CN201710108907A CN108499226A CN 108499226 A CN108499226 A CN 108499226A CN 201710108907 A CN201710108907 A CN 201710108907A CN 108499226 A CN108499226 A CN 108499226A
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- riser
- blade
- line
- high efficiency
- efficiency demister
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- 210000001364 upper extremity Anatomy 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 18
- 238000000926 separation method Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 62
- 230000000694 effects Effects 0.000 description 20
- 239000003595 mist Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses a kind of high efficiency demisters.The high efficiency demister includes several demisting components, and each demisting component includes riser and outer barrel；Riser is divide into upper part and lower part in an axial direction, and top is divided into riser I, and lower part is divided into riser II, riser I and riser II and is connect by bearing；Plate is covered in the top setting of riser I, several seams are provided on the circumference of riser I, provided circumferentially about has blade in the riser I stitched close to each item；Air inlet deflector is arranged on the riser II inner walls of air inlet position to be uniformly provided with several air admission holes on the circumference of lower part in riser II tower trays；Groove is arranged in the inner surface of the outer barrel, and the cross sectional shape of groove is made of a circular arc and straight line section.The high efficiency demister of the present invention is simple in structure, and pressure drop is small, less scaling, easy for installation, reduces entrainment, can effectively realize gas-liquid separation, is particularly suitable for the larger occasion of gas flow fluctuations.
Description
Technical field
The present invention relates to a kind of high efficiency demister, belong to the gas-liquid separation field in chemical engineering, is suitable for chemical industry and ring
Gas-liquid separation process in the fields such as guarantor.
Background technology
SO2It is the atmosphere pollution for causing the current priority control of the major reason of China's atmosphere pollution and China with dust
Object.Currently, mostly using wet processing greatly in field of environment protection, in wet processing flue gas desulfurization course, absorption tower is in operational process
In, it is also easy to produce " mist " that grain size is 10~60 microns, not only contains moisture, also dissolved with sulfuric acid, sulfate, SO2Deng to big compression ring
Border pollutes, while more serious corrosion is caused to exhaust tube and heat exchanger etc..Therefore, in wet desulfurizing process, purification
Gas has to demisting before leaving absorption tower.
Demister is the processing equipment that the fields such as chemical industry or environmental protection are used for gas-liquid separation.When the gas containing mist is with certain
Speed when passing through demister, can and demister internal structure bump against, and depend on the surface thereof.Demister internal structure surface
On mist, will be inside demister after weight reaches certain level by spreading and the effect of gravity can gradually be assembled
It is separated in structure.To realize gas-liquid separation.Demister is generally located at the top of absorption tower.When demister is in operational process
It is middle when causing resistance drop to increase to predetermined value because of fouling, it is necessary to start backwashing procedures and demister is rinsed, generally,
It is both needed to setting flooding nozzle in demister inlet end and exhaust end.Gas phase may be caused to lead to the serious entrainment of liquid phase at this time
Gas phase band liquid.
Class is can be divided into many types according to the purposes of demister, structure, such as mesh mist eliminator, collapser demister, eddy flow
Plate demister, electrostatic precipitator, venetian blind type demister and gravitational settling type demister etc..There are commonly mesh mist eliminator, herringbones
Plate demister, rotational flow plate defroster etc..Although mesh mist eliminator can detach general mist, mist cleaning, air-flow stream are required
Speed is smaller, and resistance drop is big, and service life is short, and equipment investment is big.Demister is generally used horizontally disposed at present, demister gas
Body flow direction is vertical with silk screen, and when gas velocity is relatively low, the mist inertia of entrainment is small, drifts in gas, cannot be collided with silk screen
It contacts and is removed, and due to being flowed in adverse current by separation drop and gas phase, gas is also easy to produce reentrainment to drop, to
Make the reduction of gas-liquid separation efficiency, and mesh mist eliminator is there is also easy blocking, the problems such as pressure drop is big.Blade type, herringbone
The baffle plate that direction is different, shape is different is installed inside demister, to form small runner, increases defogging effect, knot
Structure is more complex, and separating effect is bad.Rotational flow plate defroster is identical as gas flow by separation drop, is also easy to produce reentrainment, drop
Low 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.Still it does not break away from drop descent, gas-liquid counter current phenomenon,
It is 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, demisting efficiency is improved, but the demister structure is more complex, makes difficulty, and as a result of silk screen
Structure, demister pressure drop is larger, is also easier to block.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of high efficiency demisters, by fluid in flow process
Multiple baffling, acceleration and shaving effect, realize the separation of drop and gas.The high efficiency demister of the present invention is simple in structure, pressure drop
It is small, it is less scaling, it is easy for installation, entrainment is reduced, can effectively realize gas-liquid separation, is particularly suitable for gas flow wave
Dynamic larger occasion.
The high efficiency demister of the present invention, including several demisting components arranged side by side, each demisting component include riser
And outer barrel, outer barrel are arranged in the outside of riser, and on the same axis with riser；The outer tube inner surface setting is recessed
The cross sectional shape of slot, groove is made of a circular arc and straight line section；The riser is divide into upper part and lower part in an axial direction,
Top is divided into riser I, and lower part is divided into riser II, and riser II is fixed on tower tray, and riser I and riser II passes through axis
Hold connection；Plate is covered in the top setting of riser I, several seams are provided on the circumference of riser I, in the liter close to each item seam
Tracheae I is provided circumferentially about blade；The contour line of leaf cross-section is made of four curves, be respectively costa, rear line, on
Edge line and lower edge line, wherein costa are located at the both ends of leaf cross-section contour line, rear line and riser I phases with rear line
Even；Upper limb line and lower edge line are between costa and rear line.Costa and rear line are circular arc line, upper limb line and lower edge
Line is one kind in circular arc line, parabola, B-spline curves or Bezier curve, preferably circular arc or Bezier curve, upper limb line with
When lower edge line is Bezier curve, the Bezier curve at preferably five control points, i.e. 5 points 4 Bezier curves；Described
The rotation direction of blade is identical.
It is easy for installation in order to design, it is preferred to use the identical blade of shapes and sizes in the high efficiency demister of the present invention.
In the high efficiency demister of the present invention, the radius of circle where the costa of leaf cross-section is riser I radiuses
0.01~1 times, the radius of circle is identical as the outer diameter of riser I where rear line.
In the high efficiency demister of the present invention, the height of the blade is h, and h is 1~1.3 times that item stitches height a, preferably
Stitch height a for item 1.1~1.2 times；The length s of blade is 0.2-1 times, preferably 0.2-0.5 times of riser II diameters d；
The maximum width δ of blade is 0.02~0.5 times of length of blade s.On riser cross section, the outer wall of blade and riser I
It is fixedly connected, lower edge line and the rear line intersection point of blade are A, and lower edge line and the costa intersection point of blade are B.Blade lower edge line with
The angle for crossing the riser radial direction of point A is γ, and γ is generally 15 °~70 °, preferably 30 °~45 °；Blade lower edge line and mistake
Angle between the riser radial direction of point B is η, and η is generally 20 °~80 °, preferably 30 °~60 °.
In the high efficiency demister of the present invention, the item seam number on the riser I is identical as the number of blade, and item stitches
It is corresponded with blade, item seam and blade generally setting 6 ~ 20, preferably 8-12.
In the high efficiency demister of the present invention, the height a of item seam is 20~600mm, preferably 100~300mm；Item stitches
Width b generally can be 10~200mm, preferably 20~100mm.The area that always cracks of the item seam, is that riser I is transversal
0.2~0.9 times of area, preferably the 0.3~0.7 of riser I cross-sectional areas times.
In the high efficiency demister of the present invention, the bottom setting of riser II is lower to cover plate, and the bottom of riser II is less than tower
Disk certain distance, riser II tower trays are to be uniformly provided with several air admission holes, the riser II of air inlet position on the circumference of lower part
Air inlet deflector is set on inner wall.The air admission hole generally setting 3 ~ 12, preferably 6-10.The cross sectional shape of air admission hole is
Rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, in preferably rectangular, oval or circle
One or more combination.The total sectional area of air admission hole is 0.6~1.5 times of riser II sectional areas, preferably 0.8~1.2 times, tool
Body size is determined according to actual operating mode or design requirement by those skilled in the art.Air admission hole and riser II outer walls
The baffle plane of the section for the riser outer wall that two mid point of curve lines are done up and down in intersection and close air admission hole side
Angle be θ, θ is 10 ° ~ 60 °, preferably 20 ° ~ 35 °.The air inlet deflector is axially disposed within air inlet hole edge along riser
Edge is connect by connector with riser inner wall；The connector is made of baffle and shaft, baffle along riser it is axial with
Riser inner wall is fixedly connected, and air inlet deflector is connect by shaft with baffle, the maximum that air inlet deflector is rotated around shaft
Angle is baffle position；The rotation direction of each air inlet deflector is identical as the rotation direction of blade, and the shape of air inlet deflector can be
Rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, preferably identical as the shape of air admission hole, air inlet
Deflector sectional area is 1.1 ~ 2 times of air admission hole sectional area, preferably 1.3 ~ 1.5 times.
In the high efficiency demister of the present invention, groove is arranged in the inner surface of the outer barrel, and the section of the groove is by a circle
Arc and straight line section are constituted；The intersection point of wherein circular arc and outer tube inner surface circumference does the tangent line of circular arc and circumference, tangent line respectively
Between angle be α, mutually remaining ° of angle α and angle η；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 °, preferably 45 ° ~ 90 °.The depth Z of groove, i.e. circular arc and straightway intersection point to outer tube inner surface
The shortest distance on circumference is 0.1 ~ 0.7 times, preferably 0.3 ~ 0.5 times of outer barrel wall thickness；Circular arc and outer tube inner surface circumference
Arc length between intersection point and straightway and the intersection point of outer tube inner surface circumference is the 1/80 ~ 1/6 of outer tube inner surface circumference.The present invention's
In high efficiency demister, the groove number is greater than or equal to blade number, preferably identical as blade number.
In the efficient high efficiency demister of the present invention, lower capping plate（The bottoms riser II）There are certain distance K, distance away from tower tray
K is 60~200mm, preferably 80~120mm.
In the high efficiency demister of the present invention, riser I blade distance from bottom tower trays have a certain distance A, and distance A is 60~
300mm, preferably 80~120mm.
In the high efficiency demister of the present invention, it is 20~200mm that there are certain distance C, distance C in bearing bottom with tower tray, preferably
For 40~80mm.
In the high efficiency demister of the present invention, riser II and tower tray airtight connection, the height of riser I is blade height h
1.1 ~ 3 times, preferably 1.2 ~ 1.5 times.The diameter of riser I and riser II and the percent opening of tower tray can be according to actual works
Condition or design requirement, are determined by those skilled in the art.
In the high efficiency demister of the present invention, the upper capping plate and riser I, lower capping plate can be welded with riser II
It is connected together or global formation；Blade is with riser I, baffle and riser II by being welded to connect.
In the high efficiency demister of the present invention, the outer barrel is preferably cylinder, and outer barrel diameter D is riser II diameters d's
1.5-6 times, preferably 2-3 times.Upper edge the certain distance P, distance P that the upper edge of outer barrel is higher by riser I are the 1 of blade height h
~6 times, preferably 2~4 times.The lower edge of outer barrel has a certain distance B apart from tower tray, and less than the lower edge of blade, outer barrel lower edge away from
The distance B of tower tray is 5~100mm, preferably 20~50mm.The overall height H of outer barrel is 2.5~10 times of blade height h, preferably
It is 3~5 times.
In the high efficiency demister of the present invention, toothing or waveform knot can also be arranged in the lower ending opening of the outer barrel
Structure is dripped from the inner wall of outer barrel at continuous flow to be more conducive to the liquid isolated.
The junction of each component of high efficiency demister of the present invention ensures sealing, does not generate gas leak phenomenon.
The high efficiency demister of the present invention, when work, the gas of entrained drip from the air admission hole of tower tray lower end in the horizontal direction
Into riser II, gas phase flow direction is changed to tangential direction by radial direction after encountering air inlet deflector, due to air inlet water conservancy diversion
Plate can rotate, therefore can automatically adjust corner according to the uninterrupted of gas, be conducive to gas along riser II inner wall disks
Spin up flowing, enhances eddy flow effect.Partial drop collides with air inlet deflector in the process, makes some droplets
Attachment and coalescence, the drop of attachment become larger on air inlet deflector, the gravity of its own generation of a part of larger drop
More than gas climbing power and surface tension of liquid resultant force when, drop will fall along air inlet baffle surface to being divided
From completing first time gas-liquid separation；The larger drop of another part then continues to flow with gas, along riser II and
Riser I inner wall disc spins flow up.When the gas of entrained drip is flowed up along riser, gas phase after capping plate is encountered
Flow direction changes, and horizontal or level of approximation direction is changed to by ascent direction, and droplet is due to effect of inertia and upper envelope
Cover board collides, and completes second of gas-liquid separation, while having part droplet coalescence to become larger drop again, and with gas
Continue to flow.The gas of entrained drip is stitched along horizontal or level of approximation direction by the item on riser I, since item stitches total cross section
Product is less than riser sectional area, and speed further increases after so that the gas of entrained drip is stitched by item.The gas of entrained drip from
It collides with blade after item seam outflow, gas phase flow direction changes again, and the droplet not being removed passes through at blade
It crosses identical effect and is captured, complete third time gas-liquid separation.And since blade profile curve is smooth transition curve, gas
Directional velocity after being hit with any point on blade is different so that gas is uniform in section between riser and outer barrel
Distribution, avoids the generation of bias current, also reduces impact force of the gas to blade.Gas continues flowing and occurs with outer tube inner wall
Collision, another changes the flow direction of gas, and gas is changed to the circle along outer tube inner wall by more dispersed flow direction
Circumferential direction flows.The gas velocity of entrained drip is larger, along when opening up the rotation of reeded outer tube inner wall and flowing up, can produce
Raw obvious shaving effect.And after the gas of entrained drip collides with blade, the droplet not being removed is due to used
Property effect continue to move along blade wheel profile, due to blade lower edge line and riser radial direction angle η and groove arc with
The angle α of outer tube inner surface is mutually remaining, therefore the droplet not being removed continues to flow along the direction for being α with outer barrel angle, and straight
The tangential direction connect along groove arc flows into groove, further enhances shaving effect.The shaving effect refers to entrainment
When the high-speed gas of drop is flowed up along outer tube inner wall rotation, drop is constantly thrown toward outer, liquid under the action of inertia force
Drop is smoothly moved into groove and the arc section in groove, between drop contact aggregation become larger, until encounter straightway by
Hinder, 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 after
It is continuous to assemble and become larger, and then go downstream along outer tube inner wall；And gas then continues that high speed is kept to rotate to upstream along outer tube inner wall
It is dynamic, gas-liquid separation is realized again, and reduces entrainment.And the gas of entrained drip hits leaf after item seam outflow
Piece, under the impetus of gas, riser I is rotated by connecting bearing relative to riser II, due to blade profile
Curve is smooth transition curve, and when riser I is rotated, air drag is relatively low, strengthens the rotation effect that bearing drives riser I
Fruit.The rotation direction of riser I and blade it is oppositely oriented, so that the gas after blade acts on continuously is hit outer tube inner wall each
Place strengthens shaving effect without being merely to hit outer tube inner wall fixed position, while it is equal in outer barrel to be more favorable to gas
Even distribution.By above-mentioned baffling, acceleration and shaving effect, fluid is made to realize the separation of drop and gas in flow process.
Application of the high efficiency demister of the present invention in the absorption tower using wet desulfurizing process, generally enters riser II
Gas velocity be 3-20m/s, from item seam outflow gas velocity be 10-40m/s, from item seam outflow gas velocity be into riser II gas
1.5 ~ 3 times of speed.
Compared with prior art, high efficiency demister of the invention has the following advantages：
1, the lower ends riser II have lower capping plate, the circumferencial direction of riser II to be uniformly provided with several air admission holes, air inlet position
Several air inlet deflectors are arranged in riser II inner walls, after so that gas is entered riser II in the horizontal direction, encounter air inlet deflector
Gas phase flow direction is set to be changed to tangential direction by radial direction, it, can be according to gas since air inlet deflector can rotate
Uninterrupted automatically adjust the corner of air inlet deflector in a certain range, be more advantageous to gas along riser II and riser
I inner walls, which spiral, to be flowed up, and eddy flow effect is enhanced, and is particularly suitable for the larger occasion of gas flow fluctuations.
2, it is connected by bearing between riser I and riser II, riser I rotates under the influence of gas, rises
The rotation direction of tracheae I is oppositely oriented with outlet rectification channel, and the gas after blade acts on is made continuously to hit outer barrel circumferential direction
Inner wall everywhere, without being merely to hit outer tube inner wall fixed position, is more advantageous to gas and is uniformly distributed in outer barrel, strengthen and scrape
Face effect, and since blade profile curve is smooth transition curve, when riser I is rotated, air drag is relatively low, strengthens bearing
Drive the rotating effect of riser I.
3, since the costa of blade and rear line are circular arc, parabola, B-spline curves or Bezier curve, curve mistake
Cross smooth, gas and directional velocity after any point is hit on blade are different so that gas riser and outer barrel it
Between be uniformly distributed in section, avoid the generation of bias current, also reduce impact force of the gas to blade.
4, the section of cylinder inner surface groove is made of a circular arc and straight line section, the high-speed gas edge of entrained drip
When outer tube inner wall rotation flows up, drop is constantly thrown toward outer under the action of inertia force, and drop enters groove and along recessed
Arc section movement in slot can make the arc surface that drop continues on groove do smooth fortune since angle α is 5 ° ~ 70 °
It is dynamic, until encounter straightway it is hindered after go downstream along outer tube inner wall, and exist without dead zone.
5, after the gas of entrained drip and blade collide, the droplet not being removed is since effect of inertia continues along leaf
Piece contour line moves, due to the folder of blade lower edge line and the angle η and groove arc and outer tube inner surface of riser radial direction
Angle α is mutually remaining, therefore the droplet not being removed continues to flow along the direction for being α with outer barrel angle, and directly along groove arc
Tangential direction flows into groove, further enhances shaving effect.
6, by multistage demisting, efficiently achieve the effect that demisting, effectively remove the smaller liquid of the grain size carried secretly in gas
Drop, demisting efficiency is high, reduces the harm to environment, plays the role of environmental protection.
7, gas flow uniform, flow resistance is small, and resistance reduces.
8, simple in structure, it is easy to make, it is not easy to plug and fouling, without backwash.
9, 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 high efficiency demister structural schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of riser I, blade and outer barrel section.
Fig. 3 is leaf cross-section contour line structural schematic diagram.
Fig. 4 is blade construction schematic diagram.
Fig. 5 be outer barrel on groove, blade and riser I schematic cross-section.
Fig. 6 is the schematic cross-section of air admission hole and air inlet deflector.
In figure respectively label for：1- tower trays；2- riseies II；3- bearings；4- riseies I；5- items stitch；6- blades；It is sealed on 7-
Cover board；8- grooves；9- outer barrels；10- costas；11- rear lines；12- upper limb lines；13- lower edge lines；14- air admission holes；It is sealed under 15-
Cover board；16- shafts；17- baffles；18- air inlet deflectors.
Specific implementation mode
The high efficiency demister of the present invention is described in further detail with reference to the accompanying drawings and examples.
The high efficiency demister of the present invention, including several demisting components arranged side by side, each demisting component include riser
With outer barrel 9, outer barrel 9 is arranged in the outside of riser, and on the same axis with riser；9 inner surface of the outer barrel setting
The cross sectional shape of groove 8, groove 8 is made of a circular arc and straight line section；The riser is divided into upper and lower two in an axial direction
Part, top are divided into riser I4, and lower part is divided into riser II2, and riser II2 is fixed on tower tray 1, riser I4 and liter gas
Pipe II2 is connected by bearing 3；Plate 7 is covered in the top setting of riser I4, several seams 5 are provided on the circumference of riser I4,
Provided circumferentially about there is blade 6 in the riser I4 close to each item seam 5；The contour line of 6 cross section of blade is made of four curves, point
It is not costa 10, rear line 11, upper limb line 12 and lower edge line 13, wherein it is transversal with rear line 11 to be located at blade 6 for costa 10
The both ends of facial contour line, rear line 11 are connected with riser I4；Upper limb line 12 is located at costa 10 and rear line with lower edge line 13
Between 11.Costa 10 is circular arc line with rear line 11, and upper limb line 12 and lower edge line 13 are circular arc line, parabola, B-spline song
When one kind in line or Bezier curve, preferably circular arc or Bezier curve, upper limb line 12 and lower edge line 13 are Bezier curve,
It is preferred that the Bezier curve at five control points, i.e. 5 points 4 Bezier curves；The rotation direction of the blade 6 is identical.
It is easy for installation in order to design in the high efficiency demister of the present invention, it is preferred to use the identical blade of shapes and sizes 6.
In the high efficiency demister of the present invention, the radius of circle is riser I4 radiuses where the costa 10 of 6 cross section of blade
0.01~1 times, the radius of circle is identical as the outer diameter of riser I4 where rear line 11.
In the high efficiency demister of the present invention, the height of the blade 6 is h, and h is 1~1.3 times that item stitches 5 height a, excellent
It is selected as 1.1~1.2 times that item stitches 5 height a；The length s of blade 6 is 0.2-1 times of riser II2 diameters d, preferably 0.2-
0.5 times；The maximum width δ of blade 6 is 0.02~0.5 times of 6 length s of blade.On riser cross section, blade 6 and liter gas
The outer wall of pipe I4 is fixedly connected, and lower edge line 13 and 11 intersection point of rear line of blade 6 are A, lower edge line 13 and the costa 10 of blade 6
Intersection point is B.6 lower edge line 13 of blade and the angle for the riser radial direction for crossing point A are γ, and γ is generally 15 °~70 °, preferably
30 °~45 °；Angle between 6 lower edge line 13 of blade and the riser radial direction for crossing point B is η, and η is generally 20 °~80 °, excellent
Select 30 °~60 °.
In the high efficiency demister of the present invention, item 5 numbers of seam on the riser I4 are identical as the number of blade 6, and
Item seam 5 is corresponded with blade 6, item seam 5 and the generally setting 6 ~ 20 of blade 6, preferably 8-12.
In the high efficiency demister of the present invention, the height a of item seam 5 is 20~600mm, preferably 100~300mm；Item
The width b of seam 5 generally can be 10~200mm, preferably 20~100mm.The area that always cracks of the item seam 5, is riser
0.2~0.9 times of I4 cross-sectional areas, preferably the 0.3~0.7 of riser I4 cross-sectional areas times.
In the high efficiency demister of the present invention, the bottom setting of riser II2 is lower to cover plate 15, and the bottom of riser II2 is low
In 1 certain distance of tower tray, riser II2 tower trays 1 are to be uniformly provided with several air admission holes 14 on the circumference of lower part, at air admission hole 14
Riser II2 inner walls on setting air inlet deflector 18.The air admission hole 14 generally setting 3 ~ 12, preferably 6-10.Into
The cross sectional shape of stomata 14 is rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, preferably square
One or more of shape, ellipse or circle combine.The total sectional area of air admission hole 14 be riser II2 sectional areas 0.6~
1.5 times, preferably 0.8~1.2 times, specific size are given really according to actual operating mode or design requirement by those skilled in the art
It is fixed.The section for the riser outer wall that two mid point of curve lines are done up and down in air admission hole 14 and riser II2 outer wall intersections
Angle with 17 plane of baffle close to 14 side of air admission hole is θ, and θ is 10 ° ~ 60 °, preferably 20 ° ~ 35 °.The air inlet water conservancy diversion
Plate 18 is axially disposed within 14 edge of air admission hole along riser, is connect with riser inner wall by connector；The connector by
Baffle 17 and shaft 16 form, and baffle 17 is axially fixedly connected with riser inner wall along riser, and air inlet deflector 18 is by turning
Axis 16 is connect with baffle 17, and the maximum angle that air inlet deflector 18 is rotated around shaft 16 is 17 position of baffle；Each air inlet
The rotation direction of deflector 18 is identical as the rotation direction of blade 6, and the shape of air inlet deflector 18 can be rectangle, ellipse, circle, trapezoidal
Or it is one or more of semicircle equal combine, it is preferably identical as the shape of air admission hole 14,18 sectional area of air inlet deflector be into
1.1 ~ 2 times of 14 sectional area of stomata, preferably 1.3 ~ 1.5 times.
In the high efficiency demister of the present invention, groove 8 is arranged in the inner surface of the outer barrel 9, and the section of the groove 8 is by one
Circular arc and straight line section are constituted；The intersection point of wherein circular arc and 9 inner surface circumference of outer barrel does the tangent line of circular arc and circumference respectively, cuts
Angle between line is α, and angle α is mutually remaining with angle η；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 °, preferably 45 ° ~ 90 °.The depth Z of groove 8, i.e. circular arc and table in straightway intersection point to outer barrel 9
The shortest distance on the circumference of face is 0.1 ~ 0.7 times, preferably 0.3 ~ 0.5 times of 9 wall thickness of outer barrel；Circular arc is justified with 9 inner surface of outer barrel
Arc length between the intersection point of the 9 inner surface circumference of intersection point and straightway and outer barrel in week is the 1/80 ~ 1/6 of 9 inner surface circumference of outer barrel.This
In the high efficiency demister of invention, described 8 numbers of groove are greater than or equal to 6 numbers of blade, preferably identical as 6 numbers of blade.
In the efficient high efficiency demister of the present invention, lower capping plate 15（The bottoms riser II2）There is certain distance K away from tower tray 1,
Distance K is 60~200mm, preferably 80~120mm.
In the high efficiency demister of the present invention, 6 distance from bottom tower tray 1 of riser I4 blades has certain distance A, the distance A to be
60~300mm, preferably 80~120mm.
In the high efficiency demister of the present invention, it is 20~200mm that there are certain distance C, distance C in 3 bottom of bearing with tower tray 1, excellent
It is selected as 40~80mm.
In the high efficiency demister of the present invention, riser II2 and 1 airtight connection of tower tray, the height of riser I4 is that blade 6 is high
Spend h 1.1 ~ 3 times, preferably 1.2 ~ 1.5 times.The diameter of riser I4 and riser II2 and the percent opening of tower tray 1 can be according to realities
The operating mode or design requirement on border, are determined by those skilled in the art.
In the high efficiency demister of the present invention, the upper capping plate 7 and riser I4, lower capping plate 15 and riser II2
It can weld together or global formation；Blade 6 and riser I4, baffle 17 and riser II2 are by being welded to connect.
In the high efficiency demister of the present invention, the outer barrel 9 is preferably cylinder, and 9 diameter D of outer barrel is riser II2 diameters d
1.5-6 times, preferably 2-3 times.Upper edge the certain distance P, distance P that the upper edge of outer barrel 9 is higher by riser I4 are 6 height of blade
1~6 times of h, preferably 2~4 times.The lower edge of outer barrel 9 has certain distance B apart from tower tray 1, and less than the lower edge of blade 6, outer barrel
Distance B of 9 lower edges away from tower tray 1 is 5~100mm, preferably 20~50mm.The overall height H of outer barrel 9 is the 2.5 of 6 height h of blade
~10 times, preferably 3~5 times.
In the high efficiency demister of the present invention, toothing or waveform can also be arranged in the lower ending opening of the outer barrel 9
Structure is dripped from the inner wall of outer barrel 9 at continuous flow to be more conducive to the liquid isolated.
Embodiment
Certain wet scrubber tower purifying smoke 180000Nm3/ h, wherein aobvious water concentration is 10~15g/Nm3, through demisting of the present invention
Water concentration is shown in final vacuum is less than 0.8g/Nm3, demisting efficiency is more than 90%.
Claims (16)
1. a kind of high efficiency demister, it is characterised in that：Including several demisting components arranged side by side, each demisting component includes rising
Tracheae and outer barrel, outer barrel are arranged in the outside of riser, and on the same axis with riser；The outer tube inner surface setting
The cross sectional shape of groove, groove is made of a circular arc and straight line section；The riser is divided into two up and down in an axial direction
Point, top is divided into riser I, and lower part is divided into riser II, and riser II is fixed on tower tray, and riser I and riser II is logical
Cross bearing connection；Plate is covered in the top setting of riser I, several seams are provided on the circumference of riser I, are stitched close to each item
Riser I provided circumferentially about have blade；The contour line of leaf cross-section is made of four curves, is costa, rear respectively
Line, upper limb line and lower edge line, wherein costa are located at the both ends of leaf cross-section contour line, rear line and riser with rear line
I is connected；Between costa and rear line, costa and rear line are circular arc line for upper limb line and lower edge line, upper limb line and
Lower edge line is one kind in circular arc line, parabola, B-spline curves or Bezier curve；The rotation direction of the blade is identical.
2. high efficiency demister described in accordance with the claim 1, it is characterised in that：Upper limb line and lower edge line are five control points
Bezier curve.
3. high efficiency demister described in accordance with the claim 1, it is characterised in that：The radius of circle where the costa of leaf cross-section
It it is 0.01~1 times of riser I radiuses, the radius of circle is identical as the outer diameter of riser I where rear line.
4. high efficiency demister described in accordance with the claim 1, it is characterised in that：The height of the blade is h, and h is that item seam is high
Spend a 1~1.3 times, the length s of blade are 0.2-1 times of riser II diameters d, and the maximum width δ of blade is length of blade s
0.02~0.5 times.
5. high efficiency demister described in accordance with the claim 1, it is characterised in that：The lower edge line of blade is A, leaf with rear line intersection point
The lower edge line of piece and costa intersection point are B, the angle γ of blade lower edge line and the riser radial direction for crossing point A for 15 °~
70°。
6. high efficiency demister described in accordance with the claim 1, it is characterised in that：The lower edge line of blade and the riser diameter for crossing point B
To the angle between direction be η it is 20 °~80 °.
7. high efficiency demister described in accordance with the claim 1, it is characterised in that：Item seam number on the riser I and leaf
The number of piece is identical, and item seam is corresponded with blade, and item seam is arranged 6 ~ 20 with blade.
8. high efficiency demister described in accordance with the claim 1, it is characterised in that：The area that always cracks of the item seam, for a liter gas
0.2~0.9 times of pipe I cross-sectional areas.
9. high efficiency demister according to claim 6, it is characterised in that：In the groove section shape, circular arc with it is outer
The intersection point of tube inner surface circumference does the tangent line of circular arc and circumference respectively, and the angle between tangent line is α, and angle α is mutually remaining with angle η.
10. high efficiency demister described in accordance with the claim 1, it is characterised in that：The circular arc done at circular arc and straightway intersection point
Tangent line and straightway angle β be 30 ° ~ 110 °；The depth Z of groove, i.e. circular arc justify with straightway intersection point to outer tube inner surface
The shortest distance on week is 0.1 ~ 0.7 times, preferably 0.3 ~ 0.5 times of outer barrel wall thickness；The friendship of circular arc and outer tube inner surface circumference
Point and the arc length between straightway and the intersection point of outer tube inner surface circumference are the 1/80 ~ 1/6 of outer tube inner surface circumference.
11. high efficiency demister according to claim 7, it is characterised in that：The groove number is greater than or equal to blade
Number.
12. high efficiency demister described in accordance with the claim 1, it is characterised in that：The bottom setting of riser II is lower to cover plate, rises
The bottom of tracheae II be less than tower tray certain distance, riser II tower trays to be uniformly provided with several air admission holes on the circumference of lower part,
Air inlet deflector is set on the riser II inner walls of air inlet position.
13. high efficiency demister according to claim 12, it is characterised in that：The air admission hole is arranged 3 ~ 12, air inlet
The cross sectional shape in hole is that rectangle, ellipse, circle, trapezoidal or one or more of semicircle etc. combination, the total of air admission hole cut
Area is 0.6~1.5 times of riser II sectional areas.Two mid point of curve above and below in air admission hole and riser II outer wall intersections
The angle theta of the section for the riser outer wall that line is done and the baffle plane close to air admission hole side is 10 ° ~ 60 °.
14. high efficiency demister according to claim 12, it is characterised in that：The air inlet deflector is along riser axial direction
It is arranged in air inlet bore edges, is connect with riser inner wall by connector；The connector is made of baffle and shaft, baffle
Be fixedly connected with riser inner wall along riser is axial, air inlet deflector is connect by shaft with baffle, air inlet deflector around
The maximum angle of shaft rotation is baffle position.
15. high efficiency demister according to claim 12, it is characterised in that：The rotation of the rotation direction and blade of each air inlet deflector
To identical, the shape of air inlet deflector is rectangle, ellipse, circle, trapezoidal or one or more of semicircle combination, air inlet
Deflector sectional area is 1.1 ~ 2 times of air admission hole sectional area.
16. high efficiency demister described in accordance with the claim 1, it is characterised in that：The outer barrel diameter D is riser II diameters
1.5-6 times of d, it is 1~6 times of blade height h, outer barrel that the upper edge of outer barrel, which is higher by upper edge the certain distance P, distance P of riser I,
Lower edge have a certain distance B apart from tower tray, and less than the lower edge of blade, distance B of the outer barrel lower edge away from tower tray is 5~100mm, outside
The overall height H of cylinder is 2.5~10 times of blade height h, and the height of riser I is 1.1 ~ 3 times of blade height h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108907.3A CN108499226B (en) | 2017-02-27 | 2017-02-27 | High-efficient defroster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108907.3A CN108499226B (en) | 2017-02-27 | 2017-02-27 | High-efficient defroster |
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| Publication Number | Publication Date |
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| CN108499226A true CN108499226A (en) | 2018-09-07 |
| CN108499226B CN108499226B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710108907.3A Active CN108499226B (en) | 2017-02-27 | 2017-02-27 | High-efficient defroster |
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| CN109806673A (en) * | 2019-03-06 | 2019-05-28 | 中国石油大学(北京) | A kind of gas-liquid separation device for gas defoaming |
| CN116459594A (en) * | 2023-04-21 | 2023-07-21 | 西安交通大学 | Streamline variable diameter vortex tube separator based on Bezier curve and its design method |
| CN117679849A (en) * | 2023-12-13 | 2024-03-12 | 珠海泰坦新动力电子有限公司 | Gas-liquid separator and negative pressure formation system |
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| CN117679849A (en) * | 2023-12-13 | 2024-03-12 | 珠海泰坦新动力电子有限公司 | Gas-liquid separator and negative pressure formation system |
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|---|---|
| CN108499226B (en) | 2020-01-10 |
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Effective date of registration: 20230823 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
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