CN203886312U - Tapered barrel shaped baffling type demister - Google Patents
Tapered barrel shaped baffling type demister Download PDFInfo
- Publication number
- CN203886312U CN203886312U CN201320691931.1U CN201320691931U CN203886312U CN 203886312 U CN203886312 U CN 203886312U CN 201320691931 U CN201320691931 U CN 201320691931U CN 203886312 U CN203886312 U CN 203886312U
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- China
- Prior art keywords
- demister
- riser
- urceolus
- gas
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 abstract description 31
- 238000000926 separation method Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000007514 turning Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 40
- 239000012071 phase Substances 0.000 description 23
- 239000003595 mist Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000007791 liquid phase Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004581 coalescence 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
- 230000005484 gravity Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model discloses a tapered barrel shaped baffling type demister. The demister comprises a plurality of parallel demisting components. Each demisting component comprises a riser and an outer barrel, wherein the outer barrel is arranged on the outer side of the riser and is positioned on the same axis with the riser; the riser is fixed on a tower tray; a plug board is arranged at the top of the riser; a plurality of slots are formed in the circumference of the riser; tangential turning vanes are arranged on the circumference of the riser and are close to the slots; the outer barrel is of an upright circular truncated cone structure; the plug board is arranged at the top end of the outer barrel and is hermetically connected with the outer barrel and the riser. The baffling type demister has the advantages that liquid drops can be separated from gas through baffling of fluid in the flowing process; the demister is simple in structure, convenient to install and applicable to gas-liquid separation processes in the fields of chemical industry, environmental protection and the like, and can be used for implementing gas-liquid separation effectively.
Description
Technical field
The present invention relates to a kind of cone barrel deflector type demister, belong to the gas-liquid separation field in Chemical Engineering, be applicable to the gas-liquid separation process in the field such as chemical industry and environmental protection.
Background technology
SO
2with dust be the major reason that causes China's atmosphere pollution, the atmosphere pollution of the current priority control of Ye Shi China.At present, mostly adopt wet processing at field of Environment Protection, in wet processing flue gas desulfurization course, absorption tower, in running, easily produces particle diameter and is " mist " of 10～60 microns, not only contains moisture, is also dissolved with sulfuric acid, sulfate, SO
2deng, atmospheric environment is polluted, aiutage and heat exchanger etc. are caused to more serious corrosion simultaneously.Therefore,, in wet desulfurizing process, Purge gas must demist before leaving absorption tower.
Demister is the treatment facility of the field such as chemical industry or environmental protection for gas-liquid separation.In the time that the gas that contains mist passes through demister with certain speed, meeting and demister internal structure bump against, and depend in its surface.The lip-deep mist of demister internal structure, progressively assembles through the effect meeting of diffusion and gravity, when weight reaches after certain level, will separate from demister internal structure.Thereby realize gas-liquid separation.Demister operated by rotary motion is at top, absorption tower.In the time that demister causes resistance drop to increase to predetermined value because of fouling in running, just need to start backwashing procedures demister is rinsed, general, all need to arrange flooding nozzle at demister inlet end and exhaust end.Now may cause gas phase to seriously the carrying secretly of liquid phase, cause gas phase band liquid.
Can be divided into many types according to the purposes of demister, structure, as mesh mist eliminator, collapser demister, rotational flow plate defroster, electrostatic precipitator, venetian blind type demister and gravitational settling type demister etc.Conventional have mesh mist eliminator, collapser demister, a rotational flow plate defroster etc.Although mesh mist eliminator can separate general mist, require that mist is clean, air-flow velocity is less, and resistance drop is large, life cycle is short, and equipment investment is large.Demister generally all adopts horizontally disposed at present, demister gas flow direction is vertical with silk screen, when gas speed is lower, the mist inertia of carrying secretly is little, in gas, drifts, can not contact and be removed with silk screen collision, and flow to because separated drop and gas phase are adverse current, gas easily produces reentrainment to drop, thereby makes gas-liquid separation Efficiency Decreasing, and the problems such as mesh mist eliminator also exists easy obstruction, and Pressure Drop is large.Blade type, herringbone demister inside are provided with the deflection plate that direction is different, shape is different, to form little runner, increase except fog effect, and structure is more complicated, and separating effect is bad.The separated drop of rotational flow plate defroster is identical with gas flow, easily produces reentrainment, reduce demist efficiency, and pressure drop is large, and energy consumption is higher.
The demister element that patent CN200410014713.X introduces is made up of deflection plate and flue gas flow field adjustment block, deflection plate is fixed in flue gas flow field adjustment block, the variation of flow field parameter everywhere changes according to flow area for the density of deflection plate and shape, thereby the flow area of air-flow in absorption tower is evenly distributed.Still do not break away from drop landing process, gas-liquid counter current phenomenon, easily produces reentrainment.The demister that patent CN200920128824.1 introduces is made up of cooler, thick demister and smart demister etc., thick demister is corrugated sheet or demist plate, essence demister is steel wire, this demister has changed the shortcoming of traditional demister drop and airflow direction counter-current flow, has improved demist efficiency, but this demister structure is more complicated, make difficulty, and owing to having adopted screen net structure, demister pressure drop is larger, also stop up than being easier to.
The rotational flow plate defroster that patent CN200720038084.3 introduces is made up of blade, blind plate, cover cylinder and ring flat-plate, this demister mainly utilizes blade to promote gas and is rotated, droplet is subject to the effect of centrifugal force, be thrown toward tower wall, droplet coalescence is collected, and completes gas-liquid separation, but this demister is in the time making gas phase form centrifugal force, need higher gas speed, so pressure drop is larger, energy consumption is higher.
US Patent No. 7618472B2 provides a kind of vane-type demister, and this demister is made up of corrugated sheet, flat board and louver board etc., and forms a lot of cavitys or runner.Gas-liquid mixture enters after demister, and fluid course is offset, and makes direction of flow be able to change for several times, and velocity variations is very fast, and liquid phase is easy to from gas phase separation out.This technology liquid phase, by gas phase separation process, can realize gas liquid cross-flow, and therefore gas phase reduces greatly to the reentrainment effect of drop, but this technical pattern is very complicated, and difficulty of processing is also larger, and corresponding processing and fabricating expense is higher.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of cone barrel deflector type demister, the repeatedly baffling by fluid in flow process is realized separating of drop and gas.Demister of the present invention is simple in structure, and pressure drop is little, easy for installation, can effectively realize gas-liquid separation.
The invention provides a kind of cone barrel deflector type demister, described demister comprises the demist assembly that one or several are arranged side by side, and each demist assembly includes riser and urceolus, and urceolus is arranged on the outside of riser, and with riser on same axis; Riser is fixed on tower tray, has some seams at the circumference of riser, is being provided with the tangential flow guiding wing near on the riser circumference of each seam.
According to demister of the present invention, wherein said urceolus is upright circular cone structure, and the top of urceolus arranges closure plate, the airtight connection of upper end of closure plate and urceolus and riser.
In cone cartridge type deflector type demister of the present invention, on the inner surface of described urceolus, be also provided with projection (or boss).Described projection is parallel with the bus of urceolus, or can form an angle with bus.The cross section of described projection can be the suitable shape such as circle, triangle, rectangle, preferably rectangle, and described projection is preferably clapper structure.The direction of rotation of described hyoplastron can be identical or contrary with the direction of rotation of the tangential flow guiding wing on riser.
In cone barrel deflector type demister of the present invention, on the inner surface of described urceolus, can also offer groove.Described groove is parallel with the bus of urceolus, or can form an angle with bus.The cross section of described groove can be rectangle, triangle or circular arc, is preferably triangle in the present invention.
Wherein, the lower ending opening of described urceolus can also be arranged to zigzag structure, becomes Continuous Flow drippage thereby be more conducive to isolated liquid from the inwall of urceolus.
The gas of entrained drip enters riser from tower tray lower space, gas phase is in uphill process, because draft tube diameter is little, gas speed is improved, Vapor Entrainment liquid phase rises, meet after closure plate gas phase flow direction change (changing level or level of approximation direction into by ascent direction), and droplet is because effect of inertia and closure plate bump, and be attached on closure plate, it is large that the drop adhering to becomes gradually, the climbing power that the gravity that drop produces to himself greatly exceedes gas and surface tension of liquid with joint efforts time, drop is just separated from closure plate surface to get off, complete a gas-liquid separation.The bar seam that not separated gas-liquid two-phase is offered from riser top flows out, under the guide functions of the tangential flow guiding wing, gas phase is changed again, and not removed droplet is captured through identical effect at tangential flow guiding wing turning, completes another gas-liquid separation.Not separated gas-liquid two-phase continues to flow, and in the time running into the closure plate of urceolus, gas flow direction changes again, and droplet is attached on the closure plate of urceolus to be assembled and become large, flows down along urceolus barrel.Because urceolus is the taper type of upright (just putting), gas phase velocity reduces, and the gas phase of entrained drip, in the time flowing downward, in the outer of urceolus bottom, baffling occurs again, and droplet is captured again, and drop is assembled change and fallen greatly, realizes gas-liquid separation.
Compared with prior art, cone barrel deflector type demister of the present invention has the following advantages:
1, can effectively remove the less drop of particle diameter of carrying secretly in gas, demist efficiency is high.The capping plate on riser top and the tangential flow guiding wing make to carry secretly the gas phase generation baffling of droplet, realize gas-liquid separation.
2, urceolus is upright circular cone structure, and gas phase flowing velocity is slowed down, and top arranges closure plate, makes to carry secretly the gas phase generation baffling of droplet, realizes gas-liquid separation.
3, on outer tube inner wall, have projection, under the brushing and oppress of gas phase, due to glassware for drinking water toughness, make to be attached to drop diffuse flow on inwall and be squeezed in the crack that projection and urceolus barrel form and accelerated coalescence, can further reduce entrainment.
Brief description of the drawings
Fig. 1 is cone barrel deflector type demister structural representation of the present invention.
Fig. 2 is the riser of cone barrel baffling trial division day with fog of the present invention, the A-A schematic cross-section of the tangential flow guiding wing.
In figure, be respectively labeled as: 1-tower tray; 2-riser; 3-urceolus; The 4-tangential flow guiding wing; 5-closure plate; 6-bar seam; 7-projection (hyoplastron).
Detailed description of the invention
Below in conjunction with drawings and Examples, cone barrel deflector type demister of the present invention is described in further detail.
Cone barrel deflector type demister of the present invention generally comprises one or several demist assemblies arranged side by side.As depicted in figs. 1 and 2, each demist assembly includes riser 2 and urceolus 3, and urceolus 3 is arranged on the outside of riser 2, and with riser 2 on same axis; Riser 2 is fixed on tower tray 1, has some seams 6 at the circumference of riser, on the riser circumference near each seam 6, is provided with the tangential flow guiding wing 4.
On riser tube wall, offer the size of bar seam 6, can need or design requirement according to actual operating mode, determined by those skilled in the art.As described in can be 20～500mm, preferably 200～350mm the height h of bar seam 6; The width L of bar seam 6 can be generally 20～120mm, preferably 50～80mm.The area that always cracks of described seam can be generally 3～5 times of riser sectional area.The position that is connected with bar seam 6 is provided with the tangential flow guiding wing, and the direction of rotation of the tangential flow guiding wing is consistent, and the tangential flow guiding wing mainly plays drainage and baffling effect.The angle [alpha] of tangential flow guiding wing perk is generally 5 °～45 °, preferably 15 °～30 °.Riser top is provided with closure plate 5, is connected with riser tube wall is airtight.
In cone barrel deflector type demister of the present invention, wherein urceolus 3 is upright circular cone structure, and the general θ of taper angle is 20 °～120 °, preferably 40 °～70 °.The top of urceolus 3 arranges closure plate 5, and urceolus 3 shares closure plate 5 with riser 2, closure plate 5 and urceolus 3 and airtight connection of riser 2 tops, and the lower edge of urceolus 3 is apart from tower tray 1 certain distance.Urceolus 3 is arranged on the outside of riser, and coaxial with riser.6 lower edge will be stitched lower than bar in the lower edge of urceolus 3.The lower edge of urceolus 3 can be generally 20～260mm, preferably 50～80mm apart from the vertical range B on 6 times edges of riser bar seam.Urceolus 3 lower ends (opening) diameter phi can be generally 1.1～1.6 times of draft tube diameter, preferably 1.1～1.2 times.The height H of urceolus 3 can be generally 1.3 times～2 times of riser bar seam height.The lower edge of urceolus 3 can be generally 5～100mm, preferably 20～50mm apart from the height C of tower tray 1.
In cone barrel deflector type demister of the present invention, on the inner surface (inwall) of urceolus 3, projection (or boss) 7 can also be set.Described projection 7 is parallel with the bus of cone cylinder; Or can form an angle with bus, angle γ is generally 5 °～45 °, preferably 10 °～25 °.
The cross section of projection 7 can be rectangle, triangle or circular arc, is preferably rectangle in the present invention, and projection 7 is preferably clapper structure.As in Fig. 2, projection 7 is hyoplastron.Projection 7 is generally uniformly distributed on the inner surface of cone cylinder, and its quantity is 1.5～3 times of riser bar seam quantity.Some direction of rotation of protruding 7 are consistent, identical or contrary with the direction of rotation of the tangential flow guiding wing 4, preferably contrary with the direction of rotation of the tangential flow guiding wing.
Cone barrel deflector type demister of the present invention, the lower ending opening of described urceolus 3 can also be arranged to zigzag structure, becomes Continuous Flow drippage thereby be more conducive to isolated liquid from the inwall of urceolus.
When work, the gas of entrained drip enters riser 2 from tower tray 1 lower space, gas phase is in uphill process, because riser 2 diameters are little, gas speed is improved, Vapor Entrainment liquid phase rises, meeting the rear gas phase flow direction of closure plate 5 changes, and droplet is because effect of inertia and closure plate 5 bump, and be attached on capping plate, the drop adhering to becomes greatly gradually, the climbing power that the gravity that drop produces to himself greatly exceedes gas and surface tension of liquid with joint efforts time, drop drips from closure plate 5 surfaces, has completed a gas-liquid separation.The bar seam 6 that not separated gas-liquid two-phase is offered from riser 2 tops flows out, under the guide functions of the tangential flow guiding wing 4, the mobile direction of gas-liquid two-phase is changed again, and not removed droplet is captured at the tangential flow guiding wing 4 turnings, completes another gas-liquid separation.Not separated gas-liquid two-phase continues to flow, and in the time running into the closure plate 5 and protruding 7 of urceolus, gas flow direction changes again, and droplet is attached on the closure plate 5 of urceolus to be assembled and become large, flows down along urceolus barrel.On urceolus 3 inwalls, have projection 7, projection 7 forms crack with barrel, is also more conducive to the coalescence of urceolus 3 lip-deep drops, can play guide functions simultaneously, and it is large that the drop of coalescence becomes, and flow downward along barrel.Because the bottom of urceolus 3 is the upright frustum of a cone, the gas phase of entrained drip is in the time flowing downward, gas phase velocity slows down, the ability of carrying secretly to drop further reduces, there is again baffling in urceolus 3 outers, bottom in droplet, droplet is captured again, and drop is assembled the large whereabouts of change, realizes gas-liquid separation.
Embodiment
Certain wet scrubber tower purifying smoke 180000Nm
3/ h, wherein aobvious water concentration is 10～15g/Nm
3, aobvious water concentration <0.5g/Nm in demist final vacuum of the present invention
3, demist efficiency >90%.
Claims (14)
1. a cone barrel deflector type demister, is characterized in that, described demister comprises the demist assembly that one or several are arranged side by side, and each demist assembly includes riser and urceolus, and urceolus is arranged on the outside of riser, and with riser on same axis; Riser is fixed on tower tray, has some seams at the circumference of riser, is being provided with the tangential flow guiding wing near on the riser circumference of each seam; Wherein said urceolus is upright circular cone structure, on the top of urceolus, closure plate is set, the airtight connection of upper end of closure plate and urceolus and riser; On the inner surface of urceolus, be also provided with projection, described projection is parallel with the axis of urceolus, or forms an angle with axis.
2. according to demister claimed in claim 1, it is characterized in that, the cross section of described projection is rectangle, triangle or circle.
3. according to demister claimed in claim 2, it is characterized in that, the cross section of described projection is rectangle.
4. according to the demister described in claim 1,2 or 3, it is characterized in that, described projection is hyoplastron.
5. according to demister claimed in claim 1, it is characterized in that, the angle γ of described projection and axis is 5 °～45 °.
6. according to demister claimed in claim 1, it is characterized in that, the direction of rotation of the described tangential flow guiding wing is consistent.
7. according to demister claimed in claim 6, it is characterized in that, the angle [alpha] of described tangential flow guiding wing perk is 5 °～45 °.
8. according to demister claimed in claim 1, it is characterized in that, the lower ending opening of described urceolus is arranged to zigzag structure.
9. according to demister claimed in claim 1, it is characterized in that, the area that always cracks of described seam is 3～5 times of riser sectional area.
10. according to demister claimed in claim 1, it is characterized in that, the taper angle theta of the described frustum of a cone is 20 °～120 °.
11. according to the demister described in claim 1 or 10, it is characterized in that, the taper angle theta of the described frustum of a cone is 40 °～70 °.
12. according to demister claimed in claim 1, it is characterized in that, the lower edge of described urceolus is apart from tower tray certain distance.
13. according to demister claimed in claim 1, it is characterized in that, the lower ending opening diameter phi of described urceolus is draft tube diameter 1.1 times～1.6 times, the height H of urceolus is 1.3 times～2 times of riser bar seam height.
14. according to the demister described in claim 13, it is characterized in that, the lower ending opening diameter phi of described urceolus is draft tube diameter 1.1 times～1.2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691931.1U CN203886312U (en) | 2013-11-05 | 2013-11-05 | Tapered barrel shaped baffling type demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691931.1U CN203886312U (en) | 2013-11-05 | 2013-11-05 | Tapered barrel shaped baffling type demister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203886312U true CN203886312U (en) | 2014-10-22 |
Family
ID=51712764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320691931.1U Expired - Lifetime CN203886312U (en) | 2013-11-05 | 2013-11-05 | Tapered barrel shaped baffling type demister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203886312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606957A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Taper cylinder-shaped flow baffling type demister |
-
2013
- 2013-11-05 CN CN201320691931.1U patent/CN203886312U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606957A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Taper cylinder-shaped flow baffling type demister |
| CN104606957B (en) * | 2013-11-05 | 2017-10-03 | 中国石油化工股份有限公司 | Cone barrel deflector type demister |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |