CN104606967B - A kind of cone barrel deflector type demister - Google Patents
A kind of cone barrel deflector type demister Download PDFInfo
- Publication number
- CN104606967B CN104606967B CN201310540369.7A CN201310540369A CN104606967B CN 104606967 B CN104606967 B CN 104606967B CN 201310540369 A CN201310540369 A CN 201310540369A CN 104606967 B CN104606967 B CN 104606967B
- Authority
- CN
- China
- Prior art keywords
- urceolus
- riser
- demister
- gas
- closure plate
- 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.)
- Active
Links
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
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses a kind of cone barrel deflector type demister.Described demister includes that several are arranged side by side except mist assembly, each all includes riser and urceolus except mist assembly, and urceolus is arranged on the outside of riser, and with riser on the same axis；Riser is fixed on tower tray, and the top of riser arranges closure plate, and the circumference at riser has some seams, provided circumferentially about has the tangential flow guiding wing at the riser near each bar seam；Wherein said urceolus is upright circular cone structure, and the top of urceolus arranges closure plate, closure plate and urceolus and liter inflator airtight connection.The deflector type demister of the present invention, realizes drop by fluid baffling in flow process and separates with gas.The demister simple in construction of the present invention, easy for installation, can effectively realize gas-liquid separation, it is adaptable to the gas-liquid separation process in the field such as chemical industry and environmental protection.
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, it is adaptable to the gas-liquid separation process in the field such as chemical industry and environmental protection.
Background technology
SO2It is the major reason causing China's atmosphere pollution with dust, the atmosphere pollution of the current priority control of Ye Shi China.At present, mostly using wet processing at field of Environment Protection, in wet processing flue gas desulfurization course, absorption tower, in running, is easily generated " mist " that particle diameter is 10～60 microns, does not contain only moisture, also dissolved with sulfuric acid, sulfate, SO2Deng, atmospheric environment is polluted, aiutage and heat exchanger etc. are caused more serious corrosion simultaneously.Therefore, in wet desulfurizing process, purify gas and have to remove mist before leaving absorption tower.
Demister is the field such as chemical industry or the environmental protection processing equipment for gas-liquid separation.When the gas containing mist passes through demister with certain speed, meeting and demister internal structure bump against, and depend in its surface.Mist on demister internal structure surface, the effect through diffusion and gravity can progressively be assembled, and after weight reaches certain level, will separate from demister internal structure.Thus realize gas-liquid separation.Demister is generally located on top, absorption tower.When demister causes resistance drop to increase to predetermined value in running because of fouling, it is necessary to start backwashing procedures and demister is rinsed, typically, be both needed to arrange flooding nozzle at demister inlet end and exhaust end.Now may cause gas phase seriously carrying secretly liquid phase, cause gas phase band liquid.
Purposes, structure according to demister can be divided into many types, such as mesh mist eliminator, collapser demister, rotational flow plate defroster, electrostatic precipitator, venetian blind type demister and gravitational settling type demister etc..Conventional has mesh mist eliminator, collapser demister, rotational flow plate defroster etc..Although mesh mist eliminator can separate general mist, but requires that mist cleaning, air-flow velocity are less, and resistance drop is big, uses the cycle short, and equipment investment is big.Demister the most all uses horizontally disposed at present, demister gas flow direction is vertical with silk screen, when gas speed is relatively low, the mist inertia carried secretly is little, drifts in gas, can not be removed with silk screen making contact, and flowed in adverse current with gas phase owing to separating drop, gas is easily generated reentrainment to drop, so that gas-liquid separation efficiency reduces, and mesh mist eliminator there is also easily blocking, the problems such as pressure drop is big.Blade type, herringbone demister are internally installed the deflection plate that direction is different, shape is different, to form little runner, increases except fog effect, and structure is more complicated, and separating effect is bad.It is identical with gas flow that rotational flow plate defroster is separated drop, is easily generated reentrainment, reduces demisting efficiency, and pressure drop is big, and energy consumption is higher.
The demister element that patent CN200410014713.X is introduced is made up of deflection plate and flue gas flow field adjustment block, deflection plate is fixed in flue gas flow field adjustment block, density and the shape of deflection plate change, so that the flow area of air-flow is evenly distributed in absorption tower according to the change of flow area flow field parameter everywhere.Still do not break away from drop descent, gas-liquid counter current phenomenon, i.e. it is easily generated reentrainment.The demister that patent CN200920128824.1 is introduced is made up of cooler, thick demister and essence demister etc., thick demister is corrugated sheet or removes mist plate, essence demister is steel wire, this demister changes tradition demister drop and the shortcoming of airflow direction counter-current flow, improves demisting efficiency, but this demister structure is more complicated, make difficulty, and owing to have employed screen net structure, demister pressure drop is relatively big, is also easier blocking.
The rotational flow plate defroster that patent CN200720038084.3 is introduced is made up of blade, blind plate, cover cylinder and ring flat-plate, this demister mainly utilizes blade to promote gas to rotate, droplet is subject to centrifugal forces, being thrown toward tower wall, droplet coalescence is collected, and completes gas-liquid separation, but this demister is when making gas phase form centrifugal force, needing higher gas speed, so pressure drop is relatively big, energy consumption is higher.
United States Patent (USP) US7618472B2 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 cavity or runner.After gas-liquid mixture enters demister, fluid course offsets so that fluid flows to be changed for several times, and velocity variations is very fast, and liquid phase is easy to separate from gas phase.This technology liquid phase is by gas phase separation process, it is possible to achieve gas liquid cross-flow, and therefore the reentrainment effect of drop is substantially reduced by gas phase, but this technical pattern is extremely complex, and difficulty of processing is the biggest, 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, realize drop by the fluid repeatedly baffling in flow process and separate with gas.The demister simple in construction of the present invention, 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 includes that one or several are arranged side by side except mist assembly, each all includes riser and urceolus except mist assembly, and urceolus is arranged on the outside of riser, and with riser on the same axis；Riser is fixed on tower tray, and the circumference at riser has some seams, provided circumferentially about has the tangential flow guiding wing at the riser near each bar seam.
According to the demister of the present invention, wherein said urceolus is upright circular cone structure, and the top of urceolus arranges closure plate, closure plate and urceolus and the upper end airtight connection of riser.
In the cone barrel deflector type demister of the present invention, 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, thus advantageously becomes continuous drip to fall in 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, owing to draft tube diameter is little, gas speed is improved, Vapor Entrainment liquid phase rises, after meeting closure plate, gas phase flow direction changes (being changed into level or level of approximation direction by ascent direction), and droplet collides due to effect of inertia and closure plate, and be attached on closure plate, the drop of attachment becomes larger, drop arrives greatly the gravity himself produced and exceedes climbing power and when the making a concerted effort of surface tension of liquid of gas, drop is just separated from closure plate surface, complete a gas-liquid separation.The bar seam that the gas-liquid two-phase not separated is offered from riser top flows out, under the guide functions of the tangential flow guiding wing, making gas phase change again, the most removed droplet is captured through identical effect at tangential flow guiding wing turning, completes another gas-liquid separation.The gas-liquid two-phase not separated continues flowing, and when running into the closure plate of urceolus, gas flow direction changes again, and droplet is attached on the closure plate of urceolus assemble and becomes big, flows down along urceolus barrel.Due to the taper type that urceolus is upright (just putting), gas phase velocity reduces, and the gas phase of entrained drip, when flowing downward, occurs again baffling in the outer of urceolus bottom, and droplet is captured again, and drop assembles the big whereabouts of change, it is achieved gas-liquid separation.
Compared with prior art, the cone barrel deflector type demister of the present invention has the advantage that
1, can effectively remove the drop that the particle diameter carried secretly in gas is less, demisting 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, it is achieved gas-liquid separation.
2, urceolus is upright circular cone structure, makes gas phase flowing velocity slow down, and top arranges closure plate, makes to carry secretly the gas phase generation baffling of droplet, it is achieved gas-liquid separation.
3, have groove on outer tube inner wall, under the brushing and oppress of gas phase, owing to water has viscosity so that the drop diffusion flow being attached on inwall is squeezed into groove and accelerates coalescence, entrainment can be reduced further.
Accompanying drawing explanation
Fig. 1 is the cone barrel deflector type demister structural representation of the present invention.
Fig. 2 is the Section A-A schematic diagram of the riser in Fig. 1, the tangential flow guiding wing.
Fig. 3 is the another kind of structural representation of cone barrel deflector type demister of the present invention.
Fig. 4 is the Section A-A schematic diagram of the riser in Fig. 3, the tangential flow guiding wing.
Fig. 5 is the sectional view offering groove in Fig. 3.
Figure is respectively labeled as: 1-tower tray；2-riser；3-urceolus；The 4-tangential flow guiding wing；5-closure plate；6-bar stitches；7-groove.
Detailed description of the invention
With embodiment, the cone barrel deflector type demister of the present invention is described in further detail below in conjunction with the accompanying drawings.
It is arranged side by side except mist assembly that the cone barrel deflector type demister of the present invention generally comprises one or several.As depicted in figs. 1 and 2, each all including riser 2 and urceolus 3 except mist assembly, urceolus 3 is arranged on the outside of riser 2, and with riser 2 on the same axis；Riser 2 is fixed on tower tray 1, and the circumference at riser has some seams 6, provided circumferentially about has the tangential flow guiding wing 4 at the riser near each bar seam 6.
Offer the size of bar seam 6 on riser tube wall, can need or design requirement according to actual operating mode, those skilled in the art be determined.Can be 20～500mm as the height h of described bar seam 6, preferably 200～350mm；The width L of bar seam 6 can be typically 20～120mm, preferably 50～80mm.The area that always cracks of described bar seam, can be typically 3～5 times of riser sectional area.Stitching 6 connected position with bar and be provided with the tangential flow guiding wing, and the direction of rotation of the tangential flow guiding wing is consistent, the tangential flow guiding wing acts primarily as drainage and baffling effect.The angle [alpha] that tangential flow guiding winglet rises is generally 5 °～45 °, preferably 15 °～30 °.Riser top is provided with closure plate 5, with riser tube wall airtight connection.
In the 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, i.e. urceolus 3 and riser 2 and shares closure plate 5, closure plate 5 and urceolus 3 and riser 2 top airtight connection, lower edge distance tower tray 1 certain distance of urceolus 3.Urceolus 3 is arranged on the outside of riser, and coaxial with riser.The lower edge of lower edge bar the to be less than seam 6 of urceolus 3.The lower edge of urceolus 3 vertical range B away from 6 times edges of riser bar seam can be typically 20～260mm, preferably 50～80mm.Urceolus 3 lower end (opening) diameter phi can be typically 1.1～1.6 times of draft tube diameter, preferably 1.1～1.2 times.The height H of urceolus 3 can be typically 1.3 times～2 times of riser bar seam height.The lower edge of the urceolus 3 height C away from tower tray 1 can be typically 5～100mm, preferably 20～50mm.
As shown in Figure 3 and Figure 4: in the cone barrel deflector type demister of the present invention, the inner surface (inwall) of urceolus 3 can also offer groove 7.Described groove 7 is parallel with the bus of cone cylinder；Or can form an angle with bus, angle is generally 5 °～45 °, preferably 10 °～25 °.Groove 7 is typically uniformly distributed on the inner surface of urceolus 3, and its quantity is 1.5～3 times of riser bar seam quantity.
The cross section of groove 7 can be rectangle, triangle or circular arc, is preferably triangle in the present invention.As it is shown in figure 5, the cross section of groove 7 is triangle.Wherein groove depth X of groove 7 can be typically 1～6mm, preferably 2～4mm；Separation Y can be typically 5～60mm, preferably 10～26mm；Groove angle β can be typically 5 °～20 °, preferably 8 °～16 °.
The cone barrel deflector type demister of the present invention, the lower ending opening of described urceolus 3 can also be arranged to zigzag structure, thus advantageously become continuous drip to fall in isolated liquid from the inwall of urceolus.
During work, the gas of entrained drip enters riser 2 from tower tray 1 lower space, gas phase is in uphill process, owing to riser 2 diameter is little, gas speed is improved, Vapor Entrainment liquid phase rises, after meeting closure plate 5, gas phase flow direction changes, and droplet collides due to effect of inertia and closure plate 5, and be attached to cover on plate, the drop of attachment becomes larger, and drop arrives greatly the gravity himself produced and exceedes climbing power and when the making a concerted effort of surface tension of liquid of gas, drop drops down from closure plate 5 surface, completes a gas-liquid separation.Bar seam 6 outflow that the gas-liquid two-phase not separated is offered from riser 2 top, under the guide functions of the tangential flow guiding wing 4, making gas liquid two-phase flow direction change again, the most removed droplet is captured at the tangential flow guiding wing 4 turning, completes another gas-liquid separation.The gas-liquid two-phase not separated continues flowing, and when running into the closure plate 5 of urceolus, gas flow direction changes again, and droplet is attached on the closure plate 5 of urceolus assemble and becomes big, flows down along urceolus barrel.Groove 7 is had on urceolus 3 inwall, the coalescence of the drop being more favorable on urceolus 3 surface, guide functions can be played simultaneously, the drop of coalescence becomes big, and flows downward along barrel.Owing to the bottom of urceolus 3 is the upright frustum of a cone, the gas phase of entrained drip is when flowing downward, and gas phase velocity slows down, reducing the entrainment of drop further, there is again baffling in outer, urceolus 3 bottom in droplet, droplet is captured again, drop assembles the big whereabouts of change, it is achieved gas-liquid separation.
Embodiment
Certain wet scrubber tower purifying smoke 180000Nm3/ h, wherein showing water concentration is 10～15g/Nm3, aobvious water concentration < 0.5g/Nm in the present invention is except mist final vacuum3, demisting efficiency > and 90%.
Claims (14)
1. a cone barrel deflector type demister, it is characterised in that described demister includes that one or several are arranged side by side except mist assembly, each all includes riser and urceolus except mist assembly, and urceolus is arranged on the outside of riser, and with riser on the same axis；Riser is fixed on tower tray, and the top of riser arranges capping plate, and the circumference at riser has some seams, provided circumferentially about has the tangential flow guiding wing at the riser near each bar seam；Wherein said urceolus is that the upper end of upright circular cone structure, urceolus and riser arranges closure plate, closure plate and urceolus and the upper end airtight connection of riser；The inner surface of described urceolus is further opened with some grooves, and described groove is parallel with the bus of urceolus, or forms an angle with bus；The taper angle theta of described urceolus is 20 °～120 °.
2. according to the demister described in claim 1, it is characterised in that the cross section of described groove is rectangle, triangle or circular arc.
3. according to the demister described in claim 1, it is characterised in that described groove is 5 °～45 ° with the angle of urceolus bus.
4. according to the demister described in claim 1, it is characterised in that the direction of rotation of the described tangential flow guiding wing is consistent.
5. according to the demister described in claim 4, it is characterised in that the angle [alpha] that described tangential flow guiding winglet rises is 5 °～45 °.
6. according to the demister described in claim 1, it is characterised in that the lower ending opening of described urceolus is also configured to zigzag structure.
7. according to the demister described in claim 1, it is characterised in that 3～5 times that always crack that area is riser sectional area of described bar seam.
8. according to the demister described in claim 1, it is characterised in that the lower edge distance tower tray certain distance of described urceolus.
9., according to the demister described in claim 1, it is characterised in that lower ending opening diameter phi is draft tube diameter 1.1 times of described urceolus～1.6 times, the height H of urceolus is 1.3 times～2 times of riser bar seam height.
10. according to the demister described in claim 1, it is characterised in that the quantity of described groove is 1.5～3 times of riser bar seam quantity.
11. according to the demister described in claim 3, it is characterised in that described groove is 10 °～25 ° with the angle of urceolus bus.
12. according to the demister described in claim 5, it is characterised in that the angle [alpha] that described tangential flow guiding winglet rises is 15 °～30 °.
13. according to the demister described in claim 1, it is characterised in that the taper angle theta of described urceolus is 40 °～70 °.
14. according to the demister described in claim 9, it is characterised in that lower ending opening diameter phi is draft tube diameter 1.1 times of described urceolus～1.2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540369.7A CN104606967B (en) | 2013-11-05 | 2013-11-05 | A kind of cone barrel deflector type demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540369.7A CN104606967B (en) | 2013-11-05 | 2013-11-05 | A kind of cone barrel deflector type demister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104606967A CN104606967A (en) | 2015-05-13 |
| CN104606967B true CN104606967B (en) | 2016-08-17 |
Family
ID=53141775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310540369.7A Active CN104606967B (en) | 2013-11-05 | 2013-11-05 | A kind of cone barrel deflector type demister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104606967B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067044A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | Defogging equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH322611A (en) * | 1952-10-31 | 1957-06-30 | Bayer Ag | Bell in an exchange facility |
| CN201299984Y (en) * | 2008-11-03 | 2009-09-02 | 山东科技大学 | High-speed three-dimensional mass-transfer tower plate with super-large air flow |
| CN202015519U (en) * | 2011-01-18 | 2011-10-26 | 青岛汇森能源设备有限公司 | Gas-liquid separator |
| CN203540224U (en) * | 2013-11-05 | 2014-04-16 | 中国石油化工股份有限公司 | Tapered barrel shaped baffling type demister |
-
2013
- 2013-11-05 CN CN201310540369.7A patent/CN104606967B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH322611A (en) * | 1952-10-31 | 1957-06-30 | Bayer Ag | Bell in an exchange facility |
| CN201299984Y (en) * | 2008-11-03 | 2009-09-02 | 山东科技大学 | High-speed three-dimensional mass-transfer tower plate with super-large air flow |
| CN202015519U (en) * | 2011-01-18 | 2011-10-26 | 青岛汇森能源设备有限公司 | Gas-liquid separator |
| CN203540224U (en) * | 2013-11-05 | 2014-04-16 | 中国石油化工股份有限公司 | Tapered barrel shaped baffling type demister |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067044A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | Defogging equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104606967A (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104606963B (en) | A kind of straight tube shape deflector type demister | |
| CN203724892U (en) | Straight cylindrical baffling demister | |
| CN203724893U (en) | Straight cylindrical baffling demister | |
| CN206587499U (en) | A kind of demister | |
| CN203540224U (en) | Tapered barrel shaped baffling type demister | |
| CN104606962B (en) | Straight tube shape baffling demister | |
| CN104606961B (en) | Deflector type demister | |
| CN104606958B (en) | A kind of inverted cone deflector type demister | |
| CN108499239A (en) | A kind of high-efficiency multi-stage demister | |
| CN104606967B (en) | A kind of cone barrel deflector type demister | |
| CN104606957B (en) | Cone barrel deflector type demister | |
| CN206762467U (en) | A kind of cyclone demisting dust arrester | |
| CN206081915U (en) | Demister | |
| CN206587498U (en) | A kind of gas-liquid separator | |
| CN203724894U (en) | Baffling demister | |
| CN203724891U (en) | Inverted conical baffling demister | |
| CN203724890U (en) | Inverted conical baffling demister | |
| CN203886312U (en) | Tapered barrel shaped baffling type demister | |
| CN203540219U (en) | Baffling type demister | |
| CN104606960B (en) | A kind of deflector type demister | |
| CN107803068A (en) | A kind of high efficiency demister | |
| CN104606959B (en) | Inverted cone-shaped flow baffling demister | |
| CN108067050B (en) | High-efficient multistage defroster | |
| CN206526607U (en) | A kind of straight tube demister | |
| CN108067044B (en) | Demisting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |