CN206526607U - A kind of straight tube demister - Google Patents
A kind of straight tube demister Download PDFInfo
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- CN206526607U CN206526607U CN201720112104.0U CN201720112104U CN206526607U CN 206526607 U CN206526607 U CN 206526607U CN 201720112104 U CN201720112104 U CN 201720112104U CN 206526607 U CN206526607 U CN 206526607U
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- riser
- straight tube
- demister
- flow guiding
- tangential flow
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Abstract
The utility model discloses a kind of straight tube demister, including several demisting components arranged side by side, each demisting component is including riser and straight tube, and straight tube, which is arranged on the outside of riser, the inner surface of straight tube, sets raised, and with riser on the same axis；Described riser be divided into vertically above and below two parts, top is divided into riser I, and bottom is divided into riser II, and riser I is connected with riser II by bearing, and riser II is fixed on tower tray；Riser I top sets capping plate, and some seams are provided with riser I circumference, the riser I close to each bar seam it is provided circumferentially about have some cylindrical protrusions are set on tangential flow guiding plate, tangential flow guiding plate.Demister of the present utility model is simple in construction, and pressure drop is small, easy for installation, can effectively realize gas-liquid separation.
Description
Technical field
The utility model is related to a kind of straight tube demister, the gas-liquid separation field belonged in Chemical Engineering, it is adaptable to chemical industry
And the gas-liquid separation process in the field such as environmental protection.
Background technology
SO2It is the major reason that causes China's atmosphere pollution with dust, is also the atmosphere pollution of the current priority control of China
Thing.At present, wet processing is used mostly in field of Environment Protection, in wet processing flue gas desulfurization course, absorption tower is in running
In, " mist " that particle diameter is 10~60 microns is also easy to produce, not only contains moisture, also dissolved with sulfuric acid, sulfate, SO2Deng to big compression ring
Border is polluted, while causing more serious corrosion to aiutage and heat exchanger etc..Therefore, in wet desulfurizing process, purification
Gas has to demisting before absorption tower is left.
Demister is that the fields such as chemical industry or environmental protection are used for the processing equipment of gas-liquid separation.When the gas containing mist is with certain
Speed by demister when, can and demister internal structure bump against, and depend in its surface.Demister internal structure surface
On mist,, will be inside demister after weight reaches certain level by spreading and the effect of gravity can progressively be assembled
Separated in structure.So as to realize gas-liquid separation.Demister is generally located at the top of absorption tower.When demister is in running
It is middle because of fouling and caused by resistance drop when increasing to predetermined value, it is necessary to start backwashing procedures is rinsed to demister, typically,
It is both needed to set flooding nozzle in demister inlet end and exhaust end.Serious entrainment of the gas phase to liquid phase may now be caused, caused
Gas phase band liquid.
Many types, such as mesh mist eliminator, collapser demister, eddy flow can be divided into according to the purposes of demister, structure
Plate demister, electrostatic precipitator, venetian blind type demister and gravitational settling type demister etc..Conventional has mesh mist eliminator, herringbone
Plate demister, rotational flow plate defroster etc..Although mesh mist eliminator can separate general mist, mist cleaning, air-flow stream are required
Speed is smaller, and resistance drop is big, and usage cycles are short, and equipment investment is big.Current demister typically all uses horizontally disposed, demister gas
Body flow direction is vertical with silk screen, when gas velocity is relatively low, and the mist inertia of entrainment is small, is drifted in gas, it is impossible to collided with silk screen
Contact and be removed, and because the drop that is separated is flowed to gas phase in adverse current, gas is also easy to produce reentrainment to drop, so that
Make the reduction of gas-liquid separation efficiency, and also there is easily blocking, the problems such as pressure drop is big in mesh mist eliminator.Blade type, herringbone
The deflection plate that direction is different, shape is different is installed, to form small runner, increase removes fog effect, knot inside demister
Structure is more complicated, and separating effect is bad.The separated drop of rotational flow plate defroster is identical with gas flow, is also easy to produce reentrainment, drops
Low demisting efficiency, and pressure drop is big, and energy consumption is higher.
The demister element that CN200410014713.X is introduced is made up of deflection plate and flue gas flow field adjustment block, and deflection plate is fixed
In flue gas flow field adjustment block, the density and shape of deflection plate change according to the flow area change of flow field parameter everywhere, from
And the flow area of air-flow in absorption tower is evenly distributed.Still do 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 up of cooler, thick demister and smart demister etc., thick demisting
Device is corrugated sheet or demisting plate, and smart demister is steel wire, and the demister changes traditional demister drop and airflow direction is inverse
The shortcoming of flowing, improves demisting efficiency, but the demister structure is more complicated, makes difficult, and as a result of silk screen
Structure, demister pressure drop is larger, is also easier to block.
The content of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of straight tube demister, and straight tube of the present utility model is removed
Day with fog is simple in construction, and pressure drop is small, easy for installation, can effectively realize gas-liquid separation.
Demister of the present utility model, including several demisting components arranged side by side, each demisting component include riser
And straight tube, straight tube, which is arranged on the outside of riser, the inner surface of straight tube, sets raised, and with riser on the same axis；
Described riser be divided into vertically above and below two parts, top is divided into riser I, and bottom is divided into riser II, and riser I is with rising
Tracheae II is connected by bearing, and riser II is fixed on tower tray；Riser I top sets capping plate, in riser I circle
Some of Zhou Kaiyou seams, have tangential flow guiding plate the riser I stitched close to each bar is provided circumferentially about, if being set on tangential flow guiding plate
Dry cylindrical protrusions.
In demister of the present utility model, the upper edge of described straight tube is higher than riser I upper edge, and the lower edge of straight tube away from
With a certain distance from tower tray.
In demister of the present utility model, the diameter parallel of projection and straight tube on the inner surface of described straight tube, or
It can be formed an angle with axis.The raised section of the setting can be the suitable shapes such as rectangle, triangle or circle.This
Projection described in utility model is preferred to use the clapper structure of rectangular cross-section.Wherein, the direction of rotation of hyoplastron is with tangentially leading
The direction of rotation for flowing plate is opposite.
In demister of the present utility model, riser I is rotated by connecting bearing under external force.
In demister of the present utility model, some cylindrical protrusions, described cylindrical protrusions are set on tangential flow guiding plate
It is preferred that being threaded structure.
The gas of entrained drip enters riser II from tower tray lower space, and gas phase is in uphill process, Vapor Entrainment liquid
Mutually rise, meet gas phase flow direction after capping plate and change（Level or level of approximation direction are changed to by ascent direction）, and it is small
Drop is collided due to effect of inertia with capping plate, and is attached on capping plate, and the drop of attachment is become larger, and drop is arrived greatly
Its own gravity produced exceedes climbing power and when the making a concerted effort of surface tension of liquid of gas, and drop is just from quilt in capping plate surface
Separate, complete a gas-liquid separation.The line of rabbet joint outflow that separated gas-liquid two-phase is not opened up from riser I tops, gas
When drop in phase runs into screwed cylindrical protrusions, it is attached on screw thread and assembles, and flowed down along screw thread, is tangentially being led
Under the guide functions for flowing plate, gas phase is set to change again, not removed droplet passes through at tangential flow guiding plate turning
Identical is acted on and is captured, and completes another gas-liquid separation, while tangential flow guiding plate is under the impetus of gas, is driven
Riser I is rotated by connecting bearing, and riser I rotation direction is oppositely oriented with tangential flow guiding plate, makes from tangential
Gas after deflector outflow continuously hits outer tube inner wall everywhere, without being merely to hit outer tube inner wall fixed position, strengthens
Shaving effect, is uniformly distributed while being more favorable to gas in outer barrel.Simultaneously as straight tube inwall is provided with hyoplastron, run into
During hyoplastron on straight tube inwall, due to occurring airbond, gas flow direction changes again, and droplet is attached to the interior of straight tube
Turning on wall hyoplastron, drop aggregation becomes big, is flowed down along the crack of hyoplastron and barrel, accelerates coalescence, reduces mist folder
Band.Drop is when flowing downward, under the blowing of gas, and drop hurtles down, and realizes gas-liquid separation.
Brief description of the drawings
Fig. 1 is demister structural representation of the present utility model.
Fig. 2 is the schematic cross-section of riser I tangential flow guidings plate and straight tube hyoplastron in the utility model demister.
In figure each mark for：1- tower trays；2- riseies II；3- bearings；4- riseies I；5- bars are stitched；6- tangential flow guiding plates；
7- covers plate；8- is raised；9- straight tubes.
Fig. 3 is the tangential flow guiding plate with cylindrical protrusions.
Fig. 4 is the cylindrical protrusions for being threaded structure.
Embodiment
Demister of the present utility model is described in further detail with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, demister of the present utility model includes riser I4, riser II2 and straight tube 9, riser
I4 is connected with riser II2 by bearing 3, and straight tube 9 is arranged on riser I4 and riser II2 outside, and with riser I4,
II2 is on the same axis；Riser II2 is fixed on tower tray 1；Riser I top sets capping plate 7, in riser I circle
Some of Zhou Kaiyou seams 5, the riser I that 5 are stitched close to each bar it is provided circumferentially about have set on tangential flow guiding plate 6, tangential flow guiding plate
Put and projection 8 is set on some cylindrical protrusions 10, the inwall of straight tube 9.
The size of bar seam 5 is opened up on riser tube wall, can be needed according to actual operating mode or design requirement, by this area
Technical staff is determined.The height of bar seam 5 can be 20~500mm, preferably 200~350mm as described；The width of bar seam 5
Can be 20~120mm, preferably 50~80mm.The area that always cracks of described bar seam, typically can be the 3 of riser sectional area
~5 times.5 connected positions, which are stitched, with bar is provided with tangential flow guiding plate 6, and the direction of rotation of tangential flow guiding plate 6 is consistent, tangential flow guiding plate 6
Mainly play drainage and baffling.The angle [alpha] that tangential flow guiding plate 6 is tilted is generally 5 °~45 °, preferably 15 °~30 °.Riser
Top is provided with capping plate, with riser tube wall airtight connection.
In demister of the present utility model, wherein the upper end of straight tube 9 is higher than capping plate 7, and the lower edge of straight tube 9 is apart from tower tray
1 certain distance.The lower edge of straight tube should stitch 5 lower edge less than bar.Straight tube lower edge can away from the vertical range that riser bar stitches 5 lower edges
Think 20~260mm, preferably 50~80mm.Straight tube diameter can be 1.1 times~1.6 times of draft tube diameter, preferably 1.1 times~
1.2 again.The height of straight tube can be 1.3 times~2 times that riser bar stitches height.Height of the straight tube lower edge away from tower tray 1 can be 5
~100mm, preferably 20~50mm.
In demister of the present utility model, the inner surface of straight tube 9（Inwall）It is upper that projection 8, the axle of projection 8 and straight tube 9 are set
Line is parallel, or can be formed an angle with axis, and angle can be 10 °~45 °, preferably 15 °~25 ° as described.Projection 8
Section can be preferably rectangular, i.e., raised preferably hyoplastron in rectangle, triangle or circular arc, the utility model.Such as in Fig. 2
In, projection 8 is hyoplastron.Projection 8 is typically uniformly distributed on the inner surface of straight tube, and its quantity is that riser bar stitches the 1.5 of quantity
~3 times.Some raised 8 direction of rotation are consistent, it is identical with the direction of rotation of tangential flow guiding plate 6 or rather, it is preferred to it is tangential
The direction of rotation of deflector is opposite.
In demister of the present utility model, some cylindrical protrusions 10 are set, preferably with screw thread on tangential flow guiding plate 6
The cylindrical protrusions of structure, cylindrical protrusions 10 are uniformly distributed on deflector, and cylindrical protrusions occupied area is generally tangentially
The 10% ~ 50% of the area of deflector 6.
Embodiment
Certain wet scrubber tower purifying smoke 180000Nm3/ h, wherein aobvious water concentration is 10~15g/Nm3, through the utility model
Show water concentration in demisting final vacuum and be less than 0.5g/Nm3, demisting efficiency is more than 93%.
Claims (10)
1. a kind of straight tube demister, including several demisting components arranged side by side, it is characterised in that：Each demisting component includes rising
Tracheae and straight tube, straight tube, which is arranged on the outside of riser, the inner surface of straight tube, sets raised, and with riser in same axis
On；Described riser be divided into vertically above and below two parts, top is divided into riser I, and bottom is divided into riser II, riser I
It is connected with riser II by bearing, riser II is fixed on tower tray；Riser I top sets capping plate, in riser I
Circumference be provided with some seams, close to each bar stitch riser I it is provided circumferentially about have set on tangential flow guiding plate, tangential flow guiding plate
Put some cylindrical protrusions.
2. according to the demister described in claim 1, it is characterised in that：The upper edge of described straight tube is higher than riser I upper edge,
And the lower edge of straight tube is apart from tower tray certain distance.
3. according to the demister described in claim 1, it is characterised in that：Projection and straight tube on the inner surface of described straight tube
Diameter parallel, or formed an angle with axis.
4. according to the demister described in claim 1, it is characterised in that：Projection on the inner surface of described straight tube uses section
For the clapper structure of rectangle, the direction of rotation of hyoplastron is opposite with the direction of rotation of tangential flow guiding plate.
5. according to the demister described in claim 1, it is characterised in that：Riser I is sent out by connecting bearing under external force
It is raw to rotate.
6. according to the demister described in claim 1, it is characterised in that：Opened up on riser I circumference bar seam height h be
20~500mm, the width of bar seam 5 is 20~120mm, and the area that always cracks of bar seam, is 3~5 times of riser sectional area.
7. according to the demister described in claim 1, it is characterised in that：The angle [alpha] that tangential flow guiding plate is tilted is 5 °~45 °.
8. according to the demister described in claim 1, it is characterised in that：1.1 times~the 1.6 of a diameter of draft tube diameter of straight tube
Times, the height of straight tube stitches 1.3 times~2 times of height for bar.
9. according to the demister described in claim 1, it is characterised in that：Cylindrical protrusions on tangential flow guiding plate are in tangential flow guiding
It is uniformly distributed on plate, cylindrical protrusions occupied area is the 10% ~ 50% of the area of tangential flow guiding plate 6.
10. according to the demister described in claim 1, it is characterised in that：Cylindrical protrusions on tangential flow guiding plate are threaded
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720112104.0U CN206526607U (en) | 2017-02-07 | 2017-02-07 | A kind of straight tube demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720112104.0U CN206526607U (en) | 2017-02-07 | 2017-02-07 | A kind of straight tube demister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206526607U true CN206526607U (en) | 2017-09-29 |
Family
ID=59916429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720112104.0U Active CN206526607U (en) | 2017-02-07 | 2017-02-07 | A kind of straight tube demister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206526607U (en) |
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2017
- 2017-02-07 CN CN201720112104.0U patent/CN206526607U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240325 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: China 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. Country or region before: China Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
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| TR01 | Transfer of patent right |