CN208389568U - A kind of baffle plate demister - Google Patents
A kind of baffle plate demister Download PDFInfo
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- CN208389568U CN208389568U CN201820760166.7U CN201820760166U CN208389568U CN 208389568 U CN208389568 U CN 208389568U CN 201820760166 U CN201820760166 U CN 201820760166U CN 208389568 U CN208389568 U CN 208389568U
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- baffle plate
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Abstract
The utility model discloses a kind of baffle plate demisters, including baffle plate component and liquid collecting reflux unit.Baffle plate component is made of the baffle plate blade of multiple equidistant radial arrangements, the basin passed through for gas containing liquid is formed between adjacent baffle blade, feature is: the section of each baffle plate blade is continuous broken line type, there are several for increasing the blend stop of foam removal efficiency with the direction of gas effluent containing liquid reverse setting on baffle plate blade, advantage is: being capable of providing that a kind of structure is simple, foam removal is high-efficient, the baffle plate demister of compact, good economy performance.
Description
Technical field
The utility model relates to gas and liquid separation technology field more particularly to a kind of baffle plate demisters.
Background technique
Gas-liquid separation technology refers to the technology that droplet or drop are isolated from air-flow.The technology is widely used in petroleum
Work, diesel oil hydrogenation tail gas recycle, gas extraction, storage and transportation and deep processing, wet desulphurization, wet dedusting and Fermentation Engineering, cigarette
In the technical process such as gas UTILIZATION OF VESIDUAL HEAT IN.
Demister is a kind of typical gas-liquid separation equipment, wherein for methanol wash in common demister removed for baffle plate
Foam device carries out gas-liquid separation according to physics principle of inertia: when the air-flow of entrained drip or solid particle is logical with certain speed
When crossing the molding baffle plate blade of special designing, the flow direction of fluid can be continuous in the bending channel that baffle plate blade is formed
Change dramatically, drop and solid particle occurs due to being easily detached from from bulk gas stream with larger inertia, hits baffle plate blade
Wall surface and be captured；Bulk gas stream can then pass through the channel of baffle plate blade formation to be discharged.
Therefore, the baffle plate blade of demister is that composition demister is most basic and most important except liquid element, performance
Superiority and inferiority have vital effect to the operation of entire foam-removing system.The main performance index of demister has: (1) foam removal is imitated
Rate, demister efficiency are the ratio of the drop mass that demister traps within the unit time and entrance demister drop mass,
It is also the key index of examination demister performance；(2) system pressure drop, system pressure drop refer to that air-flow passes through demister baffle plate
The pressure loss generated when channel, system pressure drop is bigger, and it is higher to represent energy consumption.
In existing large-scale acid gas removal plants, generally existing CO2Methanol content is exceeded in product gas and tail gas
Problem causes the methanol loss amount of system larger, and device operating cost increases, and generates unfavorable shadow to environment and downstream unit
It rings.The main reason for methanol content is exceeded be tower top baffle plate demister structure it is unreasonable caused by foam removal efficiency
It is low.
The baffle plate blade styles of existing common demister are various, by baffle plate leaf cross-section geometry substantially
Circular arc vane, trapezoid blade and triangular vane can be divided into.In order to improve separative efficiency, have also appeared in baffle plate blade
Bending place addition barb (arc hook) or the blade pattern for opening up groove.Furthermore application No. is 201210241035.5, entitled " one
Kind of S type demister " Chinese invention application disclose a kind of S type demister, blade include steam output side plate, intermediate plate and into
Vapour side panels, steam output side plate is parallel with steam admission side plate and vertical with intermediate plate and blade forms S type, steam output side plate
Piece and steam admission side plate form an elytrum with intermediate plate respectively.
But there are still certain defects for the baffle plate blade of these above-mentioned demisters: firstly, for for example arc-shaped, trapezoidal leaf
The demister of piece can form the smooth basin that gas-liquid passes through after application, and smooth flow field can substantially reduce the single-stage of demister
Resistance, but the reduction of single-stage foam removal efficiency is also resulted in simultaneously, thus need to increase foam removal basin length to reach foam removal requirement, because
And the volume and increased costs of device, it may not apply in small volume structure；Secondly, adding barb, fluting for such as blade
Or the demister of S type etc., single-stage foam removal efficiency is increased to a certain extent after application, but can also greatly increase single-stage simultaneously
Pressure drop causes system energy consumption to increase, so that more difficult elimination pressure drop (energy consumption) the loss bring of the raising of foam removal efficiency influences, therefore
Furthermore the purpose for being relatively inaccessible to optimization device, reducing device volume is arranged barb or fluting in the bending place of baffle plate, is producing
More difficult implementation in manufacture, technique is cumbersome, increased costs；Finally, the prior art generallys use the circulation of air-flow vertical direction and separation,
It does not also use specific liquid discharge device simultaneously, be easy to cause the reentrainment for the drop isolated.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides that a kind of structure is simple, foam removal efficiency
Height, compact, good economy performance baffle plate demister.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of baffle plate demister, including folding
Flowing plate component, the baffle plate component are made of the baffle plate blade of multiple equidistant radial arrangements, the adjacent baffle plate
The basin passed through for gas containing liquid is formed between blade, the section of each baffle plate blade is continuous broken line type, described
Baffle plate blade on the direction of gas effluent containing liquid reverse setting have several blend stops.
In some embodiments, each described its length direction of blend stop and the gas containing liquid become a mandarin that direction is perpendicular to be set
It sets, the direction that becomes a mandarin of width direction and the gas containing liquid is in horizontally disposed.Blend stop width direction and the gas containing liquid become a mandarin as a result,
Direction level can have preferable balance improving foam removal rate and increasing between single-stage pressure drop, obtain more preferably effect.
In some embodiments, each blend stop is arranged at the bending part of the baffle plate blade.As a result,
It can be contacted when gas containing liquid flows through baffle plate blade bending part inertia maximum with blend stop, further enhance foam removal efficiency,
It is avoided that drop by reentrainment.
It in some embodiments, further include at least one for collecting the liquid collecting for the drop isolated from gas containing liquid
The lower section of the baffle plate component is arranged in reflux unit, the liquid collecting reflux unit.
In some embodiments, the liquid collecting reflux unit includes liquid collecting plate and is arranged in below the liquid collecting plate
Upper opening collecting tank, the liquid collecting plate is from top to bottom obliquely installed along gas flow containing liquid, the liquid collecting plate
Inclination lower end extends to the overthe openings of the collecting tank.Thereby, it is possible to make to flow to the drop on liquid collecting plate in gravity and gas
It under the action of stream purging, enters in collecting tank faster, collecting effect is good, prevents fine droplet to be directly entered in device and is pressed from both sides
It takes away.
In some embodiments, the horizontal tilt angle of the liquid collecting plate is 0~30 °.Thus have and more preferably imitate
Fruit.
In some embodiments, the inclination lower end of the liquid collecting plate is provided with to the collecting tank internal stretch
Deflector.The drop flowed down along liquid collecting plate is guided in collecting tank as a result, and is collected.
In some embodiments, the collecting tank includes interior plate, outer panel and bottom plate, and the interior plate is located at
Close to the side of the gas effluent containing liquid, the height of the interior plate is less than the height of the outer panel.
In some embodiments, the top of the interior plate is higher than the bottom end of the deflector.Collecting tank as a result,
The liquid of middle collection is discharged from interior plate by pressure difference mode, forms liquid outlet channel between interior plate top and liquid collecting plate, from
And ensure that the gas outside baffle plate demister without foam removal can not enter from liquid outlet channel, play the role of fluid-tight, it is therefore prevented that string
Gas may.
In some embodiments, the baffle plate component peripheral hardware is equipped with outer frame body, and the baffle plate component passes through
Support rod is fixed on the side plate of the outer frame body, and the backboard interval of the baffle plate component and the outer frame body is arranged
Gap is formed, offers gas vent on the top plate of the outer frame body, the gas vent is connected to the gap, institute
The lower end of the side plate for the outer frame body stated, the outer frame body backboard lower end respectively with the closed company of liquid collecting reflux unit
It connects.The overall structure for forming baffle plate demister as a result, to foam removal gas-liquid mixture from one end level of baffle plate component into
Enter, the substances such as drop are downwardly into liquid collecting reflux unit after separation, except the gas after liquid flowed out from gas vent upwards into
Enter upstream device, the drop after separation is not easily susceptible to reentrainment.
Compared with the prior art, the advantages of the utility model are:
(1) by the way that the section of baffle plate blade is arranged to continuous broken line type, and blend stop, energy are set on baffle plate blade
Enough contact surfaces increased with the most strength of gas inertia containing liquid are easier to press from both sides in gas under the effect of inertia that gas containing liquid passes through
The droplet and solid particle of band are isolated, and foam removal efficiency is substantially increased, and obtain the foam removal efficiency under unit pressure drop also
To raising；Meanwhile angle of the captured drop between blend stop and baffle plate blade can be made to flow down, it is secondary without occurring
It carries；
(2) by setting liquid collecting reflux unit, wherein liquid collecting plate is used with the direction of gas effluent containing liquid into certain inclination angle
Degree makes to flow to drop thereon under the action of gravity and gas flow purging, enters in collecting tank faster to collect drop, receives
It is good to collect effect, prevents fine droplet to be directly entered in device and is entrained away；
(3) structure of the present apparatus is simple, easy to manufacture, can utmostly reduce demister volume, and generate
Specific energy consumption is small, good economy performance, is suitble to industrial applications.
Detailed description of the invention
Fig. 1 is a kind of schematic view of the mounting position of baffle plate demister of the utility model；
Fig. 2 is a kind of schematic perspective view of baffle plate demister of the utility model；
Fig. 3 is a kind of configuration schematic diagram of baffle plate demister of the utility model；
Fig. 4 is the section structure diagram of the baffle plate blade of the utility model embodiment one；
Fig. 5 is the section structure diagram of the baffle plate blade of the utility model embodiment two；
Fig. 6 is the section structure diagram of the baffle plate blade of the utility model embodiment three；
Fig. 7 is the section structure diagram of the baffle plate blade of the utility model embodiment four；
Fig. 8 is a kind of structural schematic diagram of the liquid collecting reflux unit of baffle plate demister of the utility model；
Fig. 9 is the basin top view of each test group；A is test group 1, and b test group 2, c is test group 3, and d is test group 4, e
It is test group 5, f is test group 6, and g is test group 7.
Wherein: arrow indicates gas flow containing liquid, baffle plate demister 1, baffle plate component 2, baffle plate blade 3, blend stop
4, liquid collecting reflux unit 5, liquid collecting plate 6, collecting tank 7, deflector 8, interior plate 9, outer panel 10, bottom plate 11, support rod 12, side plate
13, backboard 14, top plate 15, gas vent 16.
Specific embodiment
A kind of baffle plate demister of the utility model is described in further detail below in conjunction with attached drawing, but not as to this
The restriction of utility model.
Embodiment one
As shown, a kind of baffle plate demister 1, including baffle plate component 2, baffle plate component 2 is by multiple equidistant intervals
The baffle plate blade 3 of arrangement is constituted, and the basin passed through for gas containing liquid, each baffle plate are formed between adjacent baffle blade 3
The section of blade 3 is continuous broken line type, is provided with several blend stops reverse with the direction of gas effluent containing liquid on baffle plate blade 3
4。
In the present embodiment, the direction that becomes a mandarin of each its length direction of blend stop 4 and the gas containing liquid is vertical setting, width side
To the direction that becomes a mandarin with the gas containing liquid in horizontally disposed.Each blend stop 4 is arranged at the bending part of baffle plate blade 3.As a result, can
It is enough to be contacted when gas containing liquid flows through baffle plate blade bending part inertia maximum with blend stop, foam removal efficiency is further enhanced, also can
It avoids droplets from by reentrainment.
In the present embodiment, baffle plate demister 1 further includes two for collecting the liquid collecting for the drop isolated from gas
The lower section of baffle plate component 2 is arranged in reflux unit 5, liquid collecting reflux unit 5.In other embodiments, one has been can be set
Liquid collecting reflux unit 5 or three and the above liquid collecting reflux unit 5, when multiple liquid collecting reflux units 5 are set, along gas flow according to
The secondary lower section for being arranged in baffle plate component 2.
In the present embodiment, liquid collecting reflux unit 5 includes the collection of liquid collecting plate 6 and the upper opening being arranged in below liquid collecting plate 6
Liquid bath 7, liquid collecting plate 6 are from top to bottom obliquely installed along gas flow containing liquid, and the inclination lower end of liquid collecting plate 6 extends to collecting tank 7
Overthe openings.Wherein the horizontal tilt angle of liquid collecting plate 6 is 15 °, and the horizontal tilt angle of liquid collecting plate 6 can in other embodiments
Think 0.1 °, 10 °, 20 ° or 30 °.Thereby, it is possible to make to flow to the drop on liquid collecting plate under the action of gravity and gas flow purging,
It enters in collecting tank faster, collecting effect is good, prevents fine droplet to be directly entered in device and is entrained away.
In the present embodiment, the inclination lower end of liquid collecting plate 6 is vertically arranged the deflector 8 of oriented 7 internal stretch of collecting tank.
In the present embodiment, collecting tank 7 includes interior plate 9, outer panel 10 and bottom plate 11, and interior plate 9 is located at close to gas containing liquid
The side that body becomes a mandarin, the height of interior plate 9 are less than the height of outer panel 10.The top of interior plate 9 is higher than the bottom end of deflector 8.
The liquid collected in collecting tank as a result, is discharged from interior plate by pressure difference mode, is formed between interior plate top and liquid collecting plate
Liquid outlet channel plays fluid-tight work to ensure that the outer gas without foam removal of baffle plate demister can not enter from liquid outlet channel
With, it is therefore prevented that possibility of collaborating.
It is provided with outer frame body outside baffle plate component 2, outer frame body includes side plate 13, backboard 14, top plate 15, baffle plate component 2
It is fixed on the side plate 13 of outer frame body by support rod 12, between the interval of backboard 14 setting of baffle plate component 2 and outer frame body is formed
Gap offers gas vent 16 on the top plate 15 of outer frame body, and gas vent 16 is connected to gap, under the side plate 13 of outer frame body
End, outer frame body backboard 14 lower end respectively with 5 airtight connection of liquid collecting reflux unit.The whole of baffle plate demister 1 is formed as a result,
Body structure, the gas-liquid mixture to foam removal are horizontally entered into from one end of baffle plate component 2, the substances such as drop after separation downwards into
Enter liquid collecting reflux unit 5, except outflow enters upstream device to the gas after liquid from gas vent 16 upwards, the drop after separation is not
Vulnerable to reentrainment.
Embodiment two
As shown, a kind of baffle plate demister, remaining structure is the same as example 1, the difference is that: this reality
It applies in example, each blend stop 4 is arranged with gas by direction at an angle, and the angle between blend stop 4 and baffle plate blade 3 is
70 °, angle can also be 45 °, 55 °, 65 °, 80 ° etc. in other embodiments.In the present embodiment, blend stop 4 is arranged in baffle plate
The bending place of blade 3.
Embodiment three
As shown, a kind of baffle plate demister, remaining structure is the same as example 1, the difference is that: this reality
It applies in example, each blend stop 4 is provided only on the vane plate of baffle plate blade 3 rather than bending place.
Example IV
As shown, a kind of baffle plate demister, remaining structure is the same as example 1, the difference is that: this reality
It applies in example, on the vane plate of baffle plate blade 3 and bending place is distributed with blend stop 4.
A kind of working principle of baffle plate demister of the utility model is as follows: gas-liquid mixture from baffle plate component one
End is horizontally entered into certain speed, and when by the bending basin that is formed between baffle plate blade, flow direction constantly occurs sharply
Variation, according to physics principle of inertia, the substances such as drop are easily detached from from air-flow, are hit baffle plate blade wall surface and are captured, and are passed through
Drop after separation flows downwardly into liquid collecting reflux unit, sets except the gas after liquid is flowed out from gas vent 16 into downstream upwards
It is standby.
For the feasibility and validity for further verifying the utility model, the structure of the utility model is tested.
Test principle: CFD(Computational Fluid Dynamics, computational fluid dynamics are used) technology is right
Than the foam removal rate and pressure drop of baffle plate blades several under the conditions of identical entrance condition.Wherein, foam removal rate=trapping number of drops/entrance
Number of drops, separative efficiency=single-stage pressure drop foam removal efficiency=foam removal rate/pressure drop.
Experimental condition: air velocity containing liquid is set as 6m/s, this speed also uses this in technology Calculation and actual motion
Speed, to increase treating capacity as far as possible and reduce demister volume.Since for big partial size drop, baffle plate demister has preferably
Removal rate, therefore influence of each blade to foam removal rate and pressure drop is measured with size of 10 μm compared with small particle, it is all types of to compare
The actual effect of blade.Test is compared using the single-stage baffle plate of identical inlet area, identical baffling angle.Test group 1(a)
It is trapezoid blade, test group 3(c for common triangular vane, test group 2(b)) be round and smooth corner vane, test group 4(d) it is to add
Barb type blade, test group 5(e) be shaped grooved blade, test group 6(f) be S type blade, test group 7(g) it is the utility model
Baffle plate blade.The basin top view of each test group is as shown in Figure 9.
Test result: as shown in table 1.
The foam removal test result table in basin between 1 baffle plate blade of table
| Group | Pressure drop (Pa) | Foam removal rate | Foam removal rate/pressure drop (10-3×Pa-1) |
| 1 | 184.5 | 0.343 | 1.858 |
| 2 | 84.7 | 0.186 | 2.185 |
| 3 | 84.2 | 0.2 | 2.375 |
| 4 | 207 | 0.414 | 2.001 |
| 5 | 200 | 0.371 | 1.857 |
| 6 | 201 | 0.429 | 2.132 |
| 7 | 205 | 0.471 | 2.300 |
Interpretation of result: as seen from the above table, for conventional test group 1, although test group 2,3 can substantially reduce pressure
Drop, but also decline the foam removal efficiency of single-stage pressure drop, so that more series are needed to reach separative efficiency, moreover, more smooth
Flowing field, make droplet be easier to flow with air-flow, and be difficult to remove.Test group 5 after fluting, pressure drop increase, foam removal
Efficiency also increases, but the foam removal efficiency of unit pressure drop is basically unchanged, to increase manufacturing cost and scale removal difficulty.Test group
4,6,7 while slightly increasing pressure drop, substantially increases foam removal efficiency, can from the foam removal efficiency of unit pressure drop
Out, therefore more economy, meanwhile, compared to test group 4 and test group 6, its pressure drop of the test group 7 of the utility model structure
Amplification is smaller, and foam removal is more efficient, therefore, can more reduce the series of blade and improve foam removal efficiency, so that demister volume
Reduce, single-stage energy consumption reduces, and economy is more preferably；In addition, structure is simple, easy to manufacture and cleaning and maintenance.
It is worth noting that, the above is only the preferred embodiment of the present invention, it is practical new not thereby to limit this
The scope of patent protection of type, the utility model can also carry out the improvement of material and structure to the construction of above-mentioned various components,
Either it is replaced using technically equivalent ones.Therefore, the specification of the utility model is applied and diagramatic content made by equivalent knot
Structure variation, directly or indirectly applies to other correlative technology fields and is similarly all contained in the range that the utility model is covered
It is interior.
Claims (10)
1. a kind of baffle plate demister, including baffle plate component, the baffle plate component by multiple equidistant radial arrangements folding
Flowing plate blade is constituted, and forms the basin passed through for gas containing liquid between the adjacent baffle plate blade, it is characterised in that each
The section of the baffle plate blade is continuous broken line type, is inversely set on the baffle plate blade with the direction of gas effluent containing liquid
It is equipped with several blend stops.
2. a kind of baffle plate demister according to claim 1, it is characterised in that each described its length direction of blend stop
It is vertical setting with the direction that becomes a mandarin of the gas containing liquid, the direction that becomes a mandarin of width direction and the gas containing liquid is in horizontally disposed.
3. a kind of baffle plate demister according to claim 1 or 2, it is characterised in that each blend stop is arranged at
The bending part of the baffle plate blade.
4. a kind of baffle plate demister according to claim 1, it is characterised in that further include at least one for collect from
The baffle plate component is arranged in the liquid collecting reflux unit for the drop isolated in gas containing liquid, the liquid collecting reflux unit
Lower section.
5. a kind of baffle plate demister according to claim 4, it is characterised in that the liquid collecting reflux unit includes collection
The collecting tank of liquid plate and the upper opening being arranged in below the liquid collecting plate, the liquid collecting plate is along gas flow containing liquid by upper
It is obliquely installed under, the inclination lower end of the liquid collecting plate extends to the overthe openings of the collecting tank.
6. a kind of baffle plate demister according to claim 5, it is characterised in that the horizontal tilt angle of the liquid collecting plate
Degree is 0~30 °.
7. a kind of baffle plate demister according to claim 5 or 6, it is characterised in that the inclination lower end of the liquid collecting plate
It is provided with the deflector to the collecting tank internal stretch.
8. a kind of baffle plate demister according to claim 7, it is characterised in that the collecting tank includes interior plate, outer
Side plate and bottom plate, the interior plate are located at close to the side of the gas effluent containing liquid, and the height of the interior plate is less than described
Outer panel height.
9. a kind of baffle plate demister according to claim 8, it is characterised in that the top of the interior plate is higher than institute
The bottom end for the deflector stated.
10. a kind of baffle plate demister according to claim 4, it is characterised in that the baffle plate component peripheral hardware is equipped with
Outer frame body, the baffle plate component are fixed on the side plate of the outer frame body by support rod, the baffle plate component
It is arranged to form gap with the backboard interval of the outer frame body, gas vent is offered on the top plate of the outer frame body, it is described
Gas vent be connected to the gap, the lower end of the side plate of the outer frame body, the outer frame body backboard lower end
Respectively with the liquid collecting reflux unit airtight connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820760166.7U CN208389568U (en) | 2018-05-22 | 2018-05-22 | A kind of baffle plate demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820760166.7U CN208389568U (en) | 2018-05-22 | 2018-05-22 | A kind of baffle plate demister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208389568U true CN208389568U (en) | 2019-01-18 |
Family
ID=65136820
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820760166.7U Active CN208389568U (en) | 2018-05-22 | 2018-05-22 | A kind of baffle plate demister |
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| Country | Link |
|---|---|
| CN (1) | CN208389568U (en) |
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2018
- 2018-05-22 CN CN201820760166.7U patent/CN208389568U/en active Active
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