CN105413317B - Liquid mist demister applied to rectifying column - Google Patents
Liquid mist demister applied to rectifying column Download PDFInfo
- Publication number
- CN105413317B CN105413317B CN201510899862.7A CN201510899862A CN105413317B CN 105413317 B CN105413317 B CN 105413317B CN 201510899862 A CN201510899862 A CN 201510899862A CN 105413317 B CN105413317 B CN 105413317B
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- China
- Prior art keywords
- cover cylinder
- rectifying column
- eddy flow
- blind plate
- liquid mist
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- 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
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
Abstract
A kind of liquid mist demister applied to rectifying column,Including rectifying tower shell,Described rectifying column case top,Middle part and bottom are respectively equipped with gas vent,Liquid mist synthesis gas entrance and liquid outlet,Gas outlet is provided with Loose tube flange,Described rectifying column housing exterior walls are provided with and are from top to bottom respectively equipped with hanger,Recycle stock imports and exports component,Visor rinse mouth component,Guide ring is provided with described rectifying tower shell,Eddy flow foam removal component,Described guide ring is located at the lower section of gas vent and located at the top of eddy flow foam removal component,Described eddy flow foam removal component is located at the top of liquid mist synthesis gas entrance,Described conical shell is fixed in rectifying column inner walls,Described cover cylinder is fixedly arranged on conical shell,Described submerged soil is at the top of cover cylinder,Described overflow pipe sets along conical shell and connected with submerged soil,The plectane of perforate centered on described blind plate,Described blind plate is located at cover cylinder bottom,Described swirl vane is distributed in cover cylinder and above blind plate.
Description
Technical field
The present invention relates to liquid foam in gaseous fluid during decoction extraction to filter off except mist field, espespecially a kind of to be applied to rectifying
The liquid mist demister of tower.
Background technology
In the production such as chemical industry, petrochemical industry and oil refining, tower is one of wherein important equipment, primarily serves gas
(or vapour) or liquid two-phase are in close contact, and have the function that interphase mass transfer and heat transfer.In the application fields such as chemical industry, petrochemical industry,
The performance of tower suffers from great influence for the production capacity of whole equipment, the norm quota of consumption, three-protection design and environmental protection.
In existing plate column and filler tower, rectifying, absorption, desorption, increasing are being carried out（Subtract）It is wet to wait gas-liquid mass transfer, heat transfer unit
It is the close contact by two-phase and separation in operation, the transmission to alternate component promotes, so as to realize liquid or gas
Body purification, increase（Subtract）Wet purpose.In above process, in the gas phase for leaving packing layer or plate tower, a fixed number can be carried secretly
The drop or liquid foam measure, to differ in size, the presence of the material had not only wasted solvent but also had increased the refined difficulty of downstream product, because
This, it is necessary to mist control in gas in the range of setting, just be can reach into the requirement of overall preparation technology.
In existing Despumation device, the device such as generally use cyclone type demister or wire mesh demister is to " liquid foam and mist "
It is removed.But cyclone type demister is because it is by centrifugal device progress foam removal, it is therefore desirable to which import gas velocity requires high, together
When, separates inefficient, and is not readily separated the mist compared with small particle, accurate so as to be carried out to " liquid foam and mist " to be removed
Remove.Wire mesh demister has sets requirement due to carrying out foam removal by silk screen, to separation " particle diameter " and air-flow velocity, therefore,
The mist removal effect serious to entrainment is poor.And existing Despumation device, from the point of view of mass transfer, heat transfer, efficiency is typically relatively low,
And existing Despumation device is piece type structure, in larger distance between piece and piece, this is that unfavorable factor is easily accumulated in its surface
Grey fouling, it is difficult to rinse well.It is inconvenient that cost is high, installation is safeguarded.
The content of the invention
To solve the above problems, the present invention provides a kind of liquid mist demister applied to rectifying column.
To achieve the above object, the present invention, which adopts the following technical scheme that, is：A kind of liquid mist foam removal applied to rectifying column
Device, including rectifying tower shell, described rectifying column case top, middle part and bottom are respectively equipped with gas vent, liquid mist synthesis gas
Entrance and liquid outlet, gas outlet are provided with male and fomale(M＆F) Loose tube flange and convex surface Loose tube flange, described rectifying tower casing
External wall, which is provided with, is from top to bottom respectively equipped with hanger, recycle stock inlet and outlet component, visor rinse mouth component, described rectifying column
Guide ring, eddy flow foam removal component are provided with housing, described guide ring is located at the lower section of gas vent and is located at eddy flow foam removal group
The top of part, described eddy flow foam removal component are located at the top of liquid mist synthesis gas entrance, and described eddy flow foam removal component includes cone
Shell, cover cylinder, blind plate, swirl vane and submerged soil and overflow pipe, described conical shell is fixed in rectifying column inner walls, described
Cover cylinder is fixedly arranged on conical shell, and at the top of cover cylinder, described overflow pipe sets and connected with submerged soil described submerged soil along conical shell
Logical, the plectane of perforate centered on described blind plate, described blind plate is located at cover cylinder bottom, and described swirl vane is distributed in cover cylinder
Interior and above the blind plate, described swirl vane includes base, hypotenuse, connection while and by base, hypotenuse and head and the tail during connection
Connect and form triangular-section block face, described connection side is connected with cover cylinder inwall upper extreme point, described base one end with it is blind
The tangent fixation of plate circumferential edge, the described base other end are connected with cover cylinder inwall, and described block face presss from both sides with blind plate into 22.5-30
Angle（The blade elevation angle）, preferably 25 degree of angles.
When in use, reacted synthesis gas enters rectifying column enclosure interior by liquid mist synthesis gas entrance, then on spiral
Rise and pass through eddy flow foam removal component, at swirl vane, gas-liquid flow forms thin liquid layer from each swirl vane is assigned to by blind plate,
And sprayed by air-flow into drop.Drop is got rid of to rectifying column inner walls with while air motion by centrifugal force, is formed along rotation
Pendular ring, and by Action of Gravity Field and downstream to annular submerged soil, then by overflow pipe flow to take over and flow to rectifying through elbow
On tower shell inwall.Due to more than blind plate being the low-pressure area of swirling eddy, overflow pipe does not simultaneously need fluid-tight, is " from fluid-tight ".
Since liquid untill being flowed down from collecting tank, all contact flowing to swirl vane with gas, and passes through air-flow with fine droplets state
When, heat transfer, the intensity of mass transfer are big.
Due to the effect of centrifugal force so that gas is separated with liquid, and the gas after separation is discharged through gas vent, liquid
Body is discharged through liquid outlet, so as to reach the purpose of gas-liquid separation.
In being approximately triangle swirl vane, the circumference of base and blind plate is tangential on B points, base and blind plate RADIAL
Angle (radial angle) β；Swirl vane during angle of elevation alpha, with the intersection of cover barrel and intersecting at C points with cover barrel upper end, to revolve
Curve approximate can be considered as straightway by stream blade connection side, intersect at A points with cover cylinder inwall, then ∠ ACB are obtuse angle.Eddy flow leaf
The C points that piece intersects with cover barrel upper end with the subpoint in blind plate same level（C ' point）, intersection points of the C ' on base is D
Point, therefore C ' D distance can be tried to achieve by Δ CDC ', because of CC '=Hz (cover cylinder is high) α=∠ CDC ', ∠ CC ' D=90 °, so
C′D =Hz/ tgα.It can be calculated as known Hz and α and try to achieve C ' D values.C ' D distance is tried to achieve, the flat of base can be done with this
In line intersection graph great circle in C points, then subtriangular swirl vane be exactly to try to achieve quantity.
Drop is got rid of to cover cylinder inwall (because wall effect and Action of Gravity Field are along wall stream) under the influence of centrifugal force and divided
From.When being more than 18 μ mist to separation size droplet diameter, foam removal efficiency is more than 99 %.Important technological parameters：The blade elevation angle 22.5 ~
30°；Perforate kinetic energy factor F=(Vs/ A0) (γ G) 015=10~12 (m/ s) (kg/ m3) 015.
From the point of view of mass transfer, heat transfer, leaves density is reasonable, and liquid mist separation is fast, except mist effect is good, avoids and hinders
Phenomenon is filled in, saves maintenance cost.
Preferably, described swirl vane includes hydrophobic skins, stainless steel layer and the hydrophobic primer covered successively.Eddy flow leaf
Piece surface is specially treated, and spy is smooth and has self-lubricity, is not easy ash deposit and slag buildup in its surface.Also hold very much even if some dust stratifications
Easily to rinse well, reduce mist eliminator flushing frequency number, reduce flushing water usage amount, it is ensured that demister is run in low-resistance, so as to
Solves phenomena such as vane dust deposition fouling causes the increase of demister resistance, flue gas with water.It is low cost, installation, easy to maintenance.Resistance
Lose low.
Preferably, described eddy flow foam removal component also includes adapter, elbow, lacing wire, gusset, and described elbow is located at adapter
Lower end, described adapter are connected with overflow pipe, and described lacing wire is fixed to take over to be strengthened in rectifying column inner walls, described gusset
Fixed conical shell is in rectifying column inner walls.
Preferably, several emptying drain holes are provided with the top of described cover cylinder, described emptying drain hole and submerged soil interval are equal
It is distributed at the top of cover cylinder.
Preferably, described guide ring includes the first half hoop plate and the second half hoop plate, and described half hoop plate is provided with some
Bar reinforcement, described half hoop plate side are provided with some pieces of triangle gussets and connecting rib, and described connecting rib is symmetrically set in
Triangle gusset both sides, described dowel and triangle muscle junction are provided with guide pipe and lead, the first described half hoop plate with
Second half hoop plate is connected by screw bolt and nut.
Brief description of the drawings
Fig. 1 is the utility model structure chart.
Fig. 2 is the utility model eddy flow foam removal assembly assumption diagram.
Fig. 3 is the utility model cover barrel structure figure.
Fig. 4 is the utility model guide ring structure figure.
Mark explanation：1. liquid outlet；2. liquid mist synthesis gas entrance；3. rectifying tower shell；4. eddy flow foam removal component；5. lead
Xiang Huan；6. hanger；7. male and fomale(M＆F) Loose tube flange；8 convex surface Loose tube flanges；9. recycle stock import component；10. visor rinses
Mouth component；11. gas vent；41. elbow；42. lacing wire；43. adapter；44. conical shell；45. cover cylinder；46. blade；47. blind plate；
48. gusset；49. submerged soil；50. empty drain hole；61. the first half hoop plate；62. reinforcement；63. the second half hoop plate；64. triangle muscle
Plate；65. connecting rib；66. guide pipe；67. lead；68. screw bolt and nut.
Embodiment
Refer to shown in Fig. 1-4, the present invention is on a kind of liquid mist demister applied to rectifying column, including rectifying tower shell
3, the described top of rectifying tower shell 3, middle part and bottom are respectively equipped with gas vent 11, liquid mist synthesis gas entrance 2 and liquid discharge
Mouthful 1, male and fomale(M＆F) Loose tube flange 7 and convex surface Loose tube flange 8, the described outer wall of rectifying tower shell 3 are provided with gas vent 11
Provided be from top to bottom respectively equipped with hanger 6, recycle stock inlet and outlet component 9, visor rinse mouth component 10, described rectifying tower casing
Guide ring 5, eddy flow foam removal component 4 are provided with body 3, described guide ring 5 removes located at the lower section of gas vent 11 and located at eddy flow
The top of foam component 4, described eddy flow foam removal component 4 are located at the top of liquid mist synthesis gas entrance 2, described eddy flow foam removal component
4, which include conical shell 44, cover cylinder 45, blind plate 47, swirl vane 46 and submerged soil 49 and overflow pipe, described conical shell 44, is fixed on rectifying
On the inwall of tower shell 3, described cover cylinder 45 is fixedly arranged on conical shell 44, and described submerged soil 49 is described located at the top of cover cylinder 45
Overflow pipe sets along conical shell 44 and connected with submerged soil 49, the plectane of perforate centered on described blind plate 47, described blind plate 47
Located at the bottom of cover cylinder 45, described swirl vane 46 is distributed in cover cylinder 45 and located at the top of blind plate 47, described swirl vane
46 include base, hypotenuse, connection while and by base, hypotenuse and connection while head and the tail connect and form triangular-section block face, it is described
Connection side be connected with the inwall upper extreme point of cover cylinder 45, described base one end and the tangent fixation of the circumferential edge of blind plate 47, described bottom
The side other end is connected with the inwall of cover cylinder 45, and described block face and blind plate 47 are into 22.5-30 ° of angle（The blade elevation angle）, preferably 25
Spend angle.
When in use, reacted synthesis gas is entered inside rectifying tower shell 3 by liquid mist synthesis gas entrance 2, then spiral
Eddy flow foam removal component 4 is risen through, at swirl vane 46, gas-liquid flow is assigned to each swirl vane 46, shape by blind plate 47 certainly
Sprayed into thin liquid layer, and by air-flow into drop.Drop is got rid of to the inwall of rectifying tower shell 3 with while air motion by centrifugal force,
The pendular ring along rotation is formed, and by Action of Gravity Field and downstream to the submerged soil 49 of annular, then adapter 43 flowed to simultaneously by overflow pipe
Flowed to through elbow 41 on the inwall of rectifying tower shell 3.Due to the low-pressure area that blind plate more than 47 is swirling eddy, overflow pipe simultaneously need not
Fluid-tight, it is " from fluid-tight ".Since liquid untill being flowed down from collecting tank, all contact flowing to swirl vane 46 with gas, and
When passing through air-flow with fine droplets state, heat transfer, the intensity of mass transfer are big.
Due to the effect of centrifugal force so that gas is separated with liquid, and the gas after separation is discharged through gas vent 11,
Liquid is discharged through liquid outlet 1, so as to reach the purpose of gas-liquid separation.
In being approximately triangle swirl vane 46, the circumference of base and blind plate 47 is tangential on B points, base and blind plate 47
Angle (radial angle) β of RADIAL；Swirl vane 46 with during angle of elevation alpha with the intersection of the wall of cover cylinder 45 and with the wall upper end of cover cylinder 45
C points are intersected at, swirl vane 46, which connects side, approximate to be considered as straightway by curve, intersect at A points with the inwall of cover cylinder 45, then ∠
ACB is obtuse angle.Swirl vane 46 and the C points that the wall upper end of cover cylinder 45 is intersected with the subpoint in the same level of blind plate 47（C′
Point）, intersection points of the C ' on base is D points, therefore C ' D distance can be tried to achieve by Δ CDC ', because CC '=Hz (cover cylinder 45 is high) α=
∠ CDC ', ∠ CC ' D=90 °, so C ' D=Hz/ tg α.It can be calculated as known Hz and α and try to achieve C ' D values.Try to achieve C ' D
Distance, can do in the parallel lines intersection graph on base that great circle is in C points with this, then subtriangular swirl vane 46 is exactly to try to achieve
46 each edge lengths of swirl vane and density.
Drop is got rid of to the inwall of cover cylinder 45 (because wall effect and Action of Gravity Field are along wall stream) under the influence of centrifugal force and divided
From.When being more than 18 μ mist to separation size droplet diameter, foam removal efficiency is more than 99 %.Important technological parameters：The blade elevation angle 22.5 ~
30°；Perforate kinetic energy factor F=(Vs/ A0) (γ G) 015=10~12 (m/ s) (kg/ m3) 015.
From the point of view of mass transfer, heat transfer, leaves density is reasonable, and liquid mist separation is fast, except mist effect is good, avoids and hinders
Phenomenon is filled in, saves maintenance cost.
Preferably, described swirl vane 46 includes hydrophobic skins, stainless steel layer and the hydrophobic primer covered successively.Eddy flow
The surface of blade 46 is specially treated, and spy is smooth and has self-lubricity, is not easy ash deposit and slag buildup in its surface.Even if some dust stratifications
It is easy to rinse well, reduces mist eliminator flushing frequency number, reduces flushing water usage amount, it is ensured that demister is run in low-resistance,
So as to solve phenomena such as ash deposit and slag buildup of blade 46 causes the increase of demister resistance, flue gas with water.Low cost, installation, maintenance side
Just.Drag losses is low.
Preferably, eddy flow foam removal component 4 also includes adapter 43, elbow 41, lacing wire 42, gusset 48, and described elbow 41 is set
In the lower end of adapter 43, described lacing wire 42 fixes adapter 43 in the inwall of rectifying tower shell 3, and described gusset 48 strengthens fixed conical shell
44 in the inwall of rectifying tower shell 3.
Preferably, the described top of cover cylinder 45 is provided with several emptying drain holes 50, described emptying drain hole 50 and submerged soil
49 uniformly at intervals in the top of cover cylinder 45.
Preferably, described guide ring 5 includes the first half hoop plate 61 and the second half hoop plate 63, and described half hoop plate is provided with
Some reinforcements 62, described half hoop plate side are provided with some pieces of triangle gussets 64 and connecting rib 65, described dowel
Plate 65 is symmetrically set in the both sides of triangle gusset 64, and described dowel is provided with guide pipe 66 and lead 67 with triangle muscle junction,
Described the first half hoop plate 61 and the second half hoop plate 63 is connected by screw bolt and nut 68.
Embodiment of above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row limits, on the premise of design spirit of the present invention is not departed from, technical side of this area ordinary skill technical staff to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (3)
1. a kind of liquid mist demister applied to rectifying column, including rectifying tower shell, described rectifying column case top, middle part and
Bottom is respectively equipped with gas vent, liquid mist synthesis gas entrance and liquid outlet, and gas outlet is provided with male and fomale(M＆F) Loose tube flange
With convex surface Loose tube flange, described rectifying column housing exterior walls, which are provided with, is from top to bottom respectively equipped with hanger, recycle stock inlet and outlet
Component, visor rinse mouth component, described rectifying tower shell is interior to be provided with guide ring, eddy flow foam removal component, and described guide ring is set
Liquid mist synthesis gas entrance is located in the lower section of gas vent and located at the top of eddy flow foam removal component, described eddy flow foam removal component
Top, described eddy flow foam removal component includes conical shell, cover cylinder, blind plate, swirl vane and submerged soil and overflow pipe, described cone
Shell is fixed in rectifying column inner walls, and described cover cylinder is fixedly arranged on conical shell, and described submerged soil is described at the top of cover cylinder
Overflow pipe along conical shell set and connect with submerged soil, the plectane of perforate centered on described blind plate, described blind plate located at covers
Cylinder bottom, described swirl vane are distributed in cover cylinder and above blind plates, described swirl vane include base, hypotenuse,
Connection is while and by base, hypotenuse and head and the tail connect and form triangular-section block face during connection, in described connection side and cover cylinder
Wall upper extreme point connects, and described base one end and the tangent fixation of blind plate circumferential edge, the described base other end connect with cover cylinder inwall
Connect, described block face and blind plate are into 22.5-30 degree angles；
Described swirl vane includes hydrophobic skins, stainless steel layer and the hydrophobic primer covered successively；
Several emptying drain holes are provided with the top of described cover cylinder, described emptying drain hole is with submerged soil uniformly at intervals in cover cylinder top
Portion;
Described guide ring includes the first half hoop plate and the second half hoop plate, and described half hoop plate is provided with some reinforcements, institute
The half hoop plate side stated is provided with some pieces of triangle gussets and connecting rib, and described connecting rib is symmetrically set in triangle gusset two
Side, described dowel are provided with guide pipe and lead, described the first half hoop plate and the second half hoop plate with triangle muscle junction
Connected by screw bolt and nut.
A kind of 2. liquid mist demister applied to rectifying column according to claim 1, it is characterised in that：Described block face with
Blind plate is 25 degree of angles.
A kind of 3. liquid mist demister applied to rectifying column according to claim 1, it is characterised in that：Described eddy flow removes
Foam component also includes adapter, elbow, lacing wire, gusset, and described elbow connects located at adapter lower end, described adapter with overflow pipe
Logical, described lacing wire, which is fixed, takes in rectifying column inner walls, and described gusset strengthens fixed conical shell in rectifying column inner walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899862.7A CN105413317B (en) | 2015-12-09 | 2015-12-09 | Liquid mist demister applied to rectifying column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899862.7A CN105413317B (en) | 2015-12-09 | 2015-12-09 | Liquid mist demister applied to rectifying column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105413317A CN105413317A (en) | 2016-03-23 |
| CN105413317B true CN105413317B (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510899862.7A Active CN105413317B (en) | 2015-12-09 | 2015-12-09 | Liquid mist demister applied to rectifying column |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3437718A1 (en) * | 2017-08-01 | 2019-02-06 | Alfa Laval Corporate AB | A scrubber for cleaning of a gas |
| CN107803089A (en) * | 2017-12-01 | 2018-03-16 | 中冶焦耐(大连)工程技术有限公司 | A kind of demister |
| CN110339630A (en) * | 2019-08-16 | 2019-10-18 | 浙江桐朕石化设备有限公司 | A kind of petrochemical industry tower efficient defoaming device |
| CN114887346A (en) * | 2022-05-30 | 2022-08-12 | 泰兴华盛精细化工有限公司 | Vinylene carbonate's quick rectifier unit |
| CN117379807B (en) * | 2023-10-11 | 2024-03-12 | 湖北圣灵科技有限公司 | Pyran production system for glutaraldehyde synthesis |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001029718A (en) * | 1999-07-26 | 2001-02-06 | Sumitomo Chem Co Ltd | Gas-liquid separator and evaporator using the same |
| RU2198012C1 (en) * | 2001-06-08 | 2003-02-10 | Смирнов Владимир Ильич | Contact device |
| CN1323743C (en) * | 2005-04-07 | 2007-07-04 | 天津大学 | Gas liquid eddy flow type highly efficient downcomer |
| CN201701787U (en) * | 2010-05-18 | 2011-01-12 | 张超 | Demister |
| CN103752029A (en) * | 2013-12-08 | 2014-04-30 | 天津泉达农作物种植有限公司 | Three-dimensional rotary fluid-type tower plate |
| CN205287879U (en) * | 2015-12-09 | 2016-06-08 | 深圳市瑞升华科技股份有限公司 | Be applied to liquid fog demister of rectifying column |
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