CN105413317A - Liquid spray foam remover applied to rectifying tower - Google Patents
Liquid spray foam remover applied to rectifying tower Download PDFInfo
- Publication number
- CN105413317A CN105413317A CN201510899862.7A CN201510899862A CN105413317A CN 105413317 A CN105413317 A CN 105413317A CN 201510899862 A CN201510899862 A CN 201510899862A CN 105413317 A CN105413317 A CN 105413317A
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- Prior art keywords
- rectifying column
- cover cylinder
- blind plate
- liquid
- foam removal
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
A liquid spray foam remover applied to a rectifying tower comprises a rectifying tower shell. A gas outlet, a liquid spray synthesis gas inlet and a liquid outlet are formed in the top, the middle and the bottom of the rectifying tower shell respectively. A loose tube flange is arranged at the gas outlet. A hanging lug, a circulation material inlet and outlet assembly and a sight glass flushing opening assembly are arranged on the outer wall of the rectifying tower shell from top to bottom. A guide ring and a rotation flow foam removal assembly are arranged in the rectifying tower shell. The guide ring is arranged below the gas outlet and on the rotation flow foam removal assembly. The rotation flow foam removal assembly is arranged above the liquid spray synthesis gas inlet. A cone shell is fixed to the inner wall of the rectifying tower shell. A cover cylinder is fixedly arranged on the cone shell. A liquid collection groove is formed in the top of the cover cylinder. An overflow pipe is arranged along the cone shell and communicated with the liquid collection groove. A circular plate with a hole in the center serves as a blind plate which is arranged at the bottom of the cover cylinder. Rotational flow blades are evenly arranged in the cover cylinder and arranged above the blind plate.
Description
Technical field
The present invention relates to liquid extract time gaseous fluid in liquid foam filter remove mist field, espespecially a kind of liquid mist demister being applied to rectifying column.
Background technology
In chemical industry, petrochemical industry and oil refining etc. are produced, tower is one of wherein important equipment, mainly plays gas (or vapour) or liquid two-phase close contact, reaches the effect of interphase mass transfer and heat transfer.In the application such as chemical industry, petrochemical industry, the performance of tower has great impact for the production capacity of whole equipment, the norm quota of consumption, three-protection design and environmental protection.In existing plate column and packed tower equipment, in the operation carrying out the gas-liquid mass transfers such as rectifying, absorption, desorb, increasing (subtracting) be wet, heat transfer unit, be all by the close contact of two-phase be separated, the transmission of alternate component is promoted, thus realizes the wet object of liquid or gas purification, increasing (subtracting).In above process, in the gas phase leaving packing layer or plate tower, all can carry some, the drop differed in size or liquid foam secretly, the existence of this material not only wastes solvent but also increase the refining difficulty of downstream product, therefore, mist in gas must be controlled, in the scope of setting, just can reach the requirement of overall preparation technology.
In existing Despumation device, the device such as cyclone type demister or wire mesh demister is usually adopted to remove " liquid foam and mist ".But cyclone type demister carries out foam removal due to it by centrifugal device, therefore, require that inlet gas speed requires high, separative efficiency is not high simultaneously, and the not easily separated mist compared with small particle diameter, thus accurately can not remove " liquid foam and mist " to be removed.Wire mesh demister is owing to carrying out foam removal by silk screen, and have setting requirement to separation " particle diameter " and air-flow velocity, therefore, to carrying secretly, serious mist removal effect is poor.And existing Despumation device is from the angle of mass transfer, heat transfer, efficiency is generally lower, and existing Despumation device is flap-type structure, and the distance between sheet and sheet is comparatively large, and this is disadvantageous factor easy ash deposit and slag buildup in its surface, is difficult to rinse well.Cost is high, installation and maintenance are inconvenient.
Summary of the invention
For solving the problem, the invention provides a kind of liquid mist demister being applied to rectifying column.
For achieving the above object, the present invention adopts following technical scheme to be: a kind of liquid mist demister being applied to rectifying column, comprise rectifying column housing, 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 male and fomale(M&F) Loose tube flange and convex surface Loose tube flange, described rectifying column housing exterior walls is provided with and is respectively equipped with hanger from top to bottom, recycle stock imports and exports assembly, visor rinse mouth assembly, guide ring is provided with in described rectifying column housing, eddy flow foam removal assembly, described guide ring is located at the below of gas vent and is located at the top of eddy flow foam removal assembly, the top of liquid mist synthesis gas entrance is located at by described eddy flow foam removal assembly, described eddy flow foam removal assembly comprises conical 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, described submerged soil is located at cover cylinder top, described overflow pipe arranges along conical shell and is communicated with submerged soil, the plectane of perforate centered by described blind plate, described blind plate is located at bottom cover cylinder, described swirl vane to be distributed in cover cylinder and to be located at above blind plate, described swirl vane comprises base, hypotenuse, fillet and by base, hypotenuse is connected with fillet head and the tail and forms triangular-section block face, described fillet is connected with cover cylinder inwall upper extreme point, described one end, base and blind plate circumferential edge tangent fixing, the described base other end is connected with cover cylinder inwall, described block face becomes 22.5-30 angle (the blade elevation angle) with blind plate, be preferably 25 degree of angles.
In use, reacted synthesis gas enters rectifying column enclosure interior by liquid mist synthesis gas entrance, and then spiral is through eddy flow foam removal assembly, at swirl vane place, gas-liquid flow, from being assigned to each swirl vane by blind plate, forming thin liquid layer, and is sprayed into drop by air-flow.Drop gets rid of to rectifying column inner walls with the power that is centrifuged while air motion, forms the pendular ring along rotating, and gravitate and downstream to the submerged soil of annular, then flow to adapter by overflow pipe and flow in rectifying column inner walls through elbow.Owing to more than blind plate being the low-pressure area of swirling eddy, overflow pipe does not need fluid-tight, is " from fluid-tight ".Liquid, from flowing to swirl vane, to dirty from collecting tank, all contacts with gas, and when passing air-flow with fine droplets state, the intensity of heat transfer, mass transfer is large.
Due to the effect of centrifugal force, gas and fluid separation applications are come, and the gas after separation is discharged through gas vent, and liquid is discharged through liquid outlet, thus reaches the object of gas-liquid separation.
Be approximately in triangle swirl vane, the circumference of base and blind plate is tangential on B point, angle (radial angle) β of base and blind plate RADIAL; Swirl vane is with during angle of elevation alpha and the intersection of cover barrel intersect at C point with cover barrel upper end, and swirl vane fillet can be similar to and curve is considered as straightway, intersects at A point with cover cylinder inwall, then ∠ ACB is obtuse angle.The swirl vane C point crossing with cover barrel upper end with the subpoint (C ' point) in blind plate same level, the intersection point of C ' on base is D point, therefore the distance of C ' D 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/tg α.Can calculate as known Hz and α and try to achieve C ' D value.Try to achieve the distance of C ' D, just can do in the parallel lines intersection graph on base that great circle is in C point with this, then subtriangular swirl vane tries to achieve quantity exactly.
Under the influence of centrifugal force drop got rid of to cover cylinder inwall (because wall effect and Action of Gravity Field are along wall stream) and be separated.When being greater than the mist of 18 μ to precipitation of liquid droplets particle diameter, foam removal efficiency is greater than 99%.Important technological parameters: 22.5 ~ 30 °, the blade elevation angle; Perforation kinetic energy factor F=(Vs/A0) (γ G) 015=10 ~ 12 (m/s) (kg/m3) 015.
From the angle of mass transfer, heat transfer, leaves density is reasonable, and liquid mist is separated fast, except mist is effective, avoids and occurs choking phenomenon, save maintenance cost.
Preferably, described swirl vane comprises the hydrophobic skins, stainless steel layer and the hydrophobic primer that cover successively.Swirl vane surface is through specially treated, special smooth and have self-lubricity, is not easy ash deposit and slag buildup in its surface.Even if some dust stratification is also easy to rinse well, reduce mist eliminator flushing frequency number of times, reduce flushing water use amount, guarantee that demister runs in low-resistance, thus solve vane dust deposition fouling and cause the phenomenons such as the increase of demister resistance, flue gas with water.Cost is low, install, easy to maintenance.Drag losses is low.
Preferably, described eddy flow foam removal assembly also comprises adapter, elbow, lacing wire, gusset, and described elbow is located at adapter lower end, and described adapter is communicated with overflow pipe, described lacing wire is fixedly taken in rectifying column inner walls, and described gusset strengthens fixing conical shell in rectifying column inner walls.
Preferably, described cover cylinder top is provided with several emptying drain holes, and described emptying drain hole and submerged soil are uniformly at intervals in cover cylinder top.
Preferably, described guide ring comprises the first half hoop plate and the second half hoop plate, described half hoop plate is provided with some reinforcements, described half hoop plate side is provided with some pieces of triangle gussets and is connected gusset, described connection gusset is symmetrically set in triangle gusset both sides, described dowel and triangle muscle junction are provided with guide pipe and lead, and the first described half hoop plate is connected by screw bolt and nut with the second half hoop plate.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention.
Fig. 2 is eddy flow foam removal assembly assumption diagram of the present invention.
Fig. 3 is cover barrel structure figure of the present invention.
Fig. 4 is guide ring structure figure of the present invention.
Mark illustrates: 1. liquid outlet; 2. liquid mist synthesis gas entrance; 3. rectifying column housing; 4. eddy flow foam removal assembly; 5. guide ring; 6. hanger; 7. male and fomale(M&F) Loose tube flange; 8 convex surface Loose tube flanges; 9. recycle stock import assembly; 10. visor rinse mouth assembly; 11. gas vents; 41. elbows; 42. lacing wires; 43. adapters; 44. conical shells; 45. cover cylinders; 46. blades; 47. blind plates; 48. gussets; 49. submerged soil; 50. emptying drain holes; 61. first half hoop plates; 62. reinforcements; 63. second half hoop plates; 64. triangle gussets; 65. connect gusset; 66. guide pipes; 67. leads; 68. screw bolt and nut.
Detailed description of the invention
Refer to shown in Fig. 1-4, the present invention is about a kind of liquid mist demister being applied to rectifying column, comprise rectifying column housing 3, described rectifying column housing 3 top, middle part and bottom are respectively equipped with gas vent 11, liquid mist synthesis gas entrance 2 and liquid outlet 1, gas vent 11 place is provided with male and fomale(M&F) Loose tube flange 7 and convex surface Loose tube flange 8, described rectifying column housing 3 outer wall is provided with and is respectively equipped with hanger 6 from top to bottom, recycle stock imports and exports assembly 9, visor rinse mouth assembly 10, guide ring 5 is provided with in described rectifying column housing 3, eddy flow foam removal assembly 4, described guide ring 5 is located at the below of gas vent 11 and is located at the top of eddy flow foam removal assembly 4, the top of liquid mist synthesis gas entrance 2 is located at by described eddy flow foam removal assembly 4, described eddy flow foam removal assembly 4 comprises 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 column housing 3 inwall, described cover cylinder 45 is fixedly arranged on conical shell 44, described submerged soil 49 is located at cover cylinder 45 top, described overflow pipe arranges along conical shell 44 and is communicated with submerged soil 49, the plectane of perforate centered by described blind plate 47, described blind plate 47 is located at bottom cover cylinder 45, described swirl vane 46 to be distributed in cover cylinder 45 and to be located at above blind plate 47, described swirl vane 46 comprises base, hypotenuse, fillet and by base, hypotenuse is connected with fillet head and the tail and forms triangular-section block face, described fillet is connected with cover cylinder 45 inwall upper extreme point, described one end, base and blind plate 47 circumferential edge tangent fixing, the described base other end is connected with cover cylinder 45 inwall, described block face and blind plate 47 one-tenth 22.5-30 ° angle (the blade elevation angle), be preferably 25 degree of angles.
In use, it is inner that reacted synthesis gas enters rectifying column housing 3 by liquid mist synthesis gas entrance 2, and then spiral is through eddy flow foam removal assembly 4, at swirl vane 46 place, gas-liquid flow is assigned to each swirl vane 46 from by blind plate 47, forms thin liquid layer, and is sprayed into drop by air-flow.Drop gets rid of to rectifying column housing 3 inwall with the power that is centrifuged while air motion, forms the pendular ring along rotating, and gravitate and downstream to the submerged soil 49 of annular, then flow to adapter 43 by overflow pipe and flow on rectifying column housing 3 inwall through elbow 41.Because blind plate more than 47 is the low-pressure area of swirling eddy, overflow pipe does not need fluid-tight, is " from fluid-tight ".Liquid, from flowing to swirl vane 46, to dirty from collecting tank, all contacts with gas, and when passing air-flow with fine droplets state, the intensity of heat transfer, mass transfer is large.
Due to the effect of centrifugal force, gas and fluid separation applications are come, and the gas after separation is discharged through gas vent 11, and liquid is discharged through liquid outlet 1, thus reaches the object of gas-liquid separation.
Be approximately in triangle swirl vane 46, the circumference of base and blind plate 47 is tangential on B point, angle (radial angle) β of base and blind plate 47 RADIAL; Swirl vane 46 is with during angle of elevation alpha and the intersection of cover cylinder 45 wall intersect at C point with cover cylinder 45 wall upper end, and swirl vane 46 fillet can be similar to and curve is considered as straightway, intersects at A point with cover cylinder 45 inwall, then ∠ ACB is obtuse angle.The swirl vane 46 C point crossing with cover cylinder 45 wall upper end with the subpoint (C ' point) in blind plate 47 same level, the intersection point of C ' on base is D point, therefore the distance of C ' D can be tried to achieve by Δ CDC ', because of CC '=Hz (cover cylinder 45 is high) α=∠ CDC ', ∠ CC ' D=90 °, so C ' D=Hz/tg α.Can calculate as known Hz and α and try to achieve C ' D value.Try to achieve the distance of C ' D, just can do in the parallel lines intersection graph on base that great circle is in C point with this, then subtriangular swirl vane 46 is exactly try to achieve each edge lengths of swirl vane 46 and density.
Under the influence of centrifugal force drop got rid of to cover cylinder 45 inwall (because wall effect and Action of Gravity Field are along wall stream) and be separated.When being greater than the mist of 18 μ to precipitation of liquid droplets particle diameter, foam removal efficiency is greater than 99%.Important technological parameters: 22.5 ~ 30 °, the blade elevation angle; Perforation kinetic energy factor F=(Vs/A0) (γ G) 015=10 ~ 12 (m/s) (kg/m3) 015.
From the angle of mass transfer, heat transfer, leaves density is reasonable, and liquid mist is separated fast, except mist is effective, avoids and occurs choking phenomenon, save maintenance cost.
Preferably, described swirl vane 46 comprises the hydrophobic skins, stainless steel layer and the hydrophobic primer that cover successively.Swirl vane 46 surface is through specially treated, special smooth and have self-lubricity, is not easy ash deposit and slag buildup in its surface.Even if some dust stratification is also easy to rinse well, reduce mist eliminator flushing frequency number of times, reduce flushing water use amount, guarantee that demister runs in low-resistance, thus solve blade 46 ash deposit and slag buildup and cause the phenomenons such as the increase of demister resistance, flue gas with water.Cost is low, install, easy to maintenance.Drag losses is low.
Preferably, eddy flow foam removal assembly 4 also comprises adapter 43, elbow 41, lacing wire 42, gusset 48, described elbow 41 is located at adapter 43 lower end, and described lacing wire 42 fixes adapter 43 in rectifying column housing 3 inwall, and described gusset 48 strengthens fixing conical shell 44 in rectifying column housing 3 inwall.
Preferably, described cover cylinder 45 top is provided with several emptying drain holes 50, and described emptying drain hole 50 and submerged soil 49 are uniformly at intervals in cover cylinder 45 top.
Preferably, described guide ring 5 comprises the first half hoop plate 61 and the second half hoop plate 63, described half hoop plate is provided with some reinforcements 62, described half hoop plate side is provided with some pieces of triangle gussets 64 and is connected gusset 65, described connection gusset 65 is symmetrically set in triangle gusset 64 both sides, described dowel and triangle muscle junction are provided with guide pipe 66 and lead 6767, and the first described half hoop plate 61 is connected by screw bolt and nut 68 with the second half hoop plate 63.
Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (6)
1. one kind is applied to the liquid mist demister of rectifying column, comprise rectifying column housing, 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 male and fomale(M&F) Loose tube flange and convex surface Loose tube flange, described rectifying column housing exterior walls is provided with and is respectively equipped with hanger from top to bottom, recycle stock imports and exports assembly, visor rinse mouth assembly, guide ring is provided with in described rectifying column housing, eddy flow foam removal assembly, described guide ring is located at the below of gas vent and is located at the top of eddy flow foam removal assembly, the top of liquid mist synthesis gas entrance is located at by described eddy flow foam removal assembly, described eddy flow foam removal assembly comprises conical 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, described submerged soil is located at cover cylinder top, described overflow pipe arranges along conical shell and is communicated with submerged soil, the plectane of perforate centered by described blind plate, described blind plate is located at bottom cover cylinder, described swirl vane to be distributed in cover cylinder and to be located at above blind plate, described swirl vane comprises base, hypotenuse, fillet and by base, hypotenuse is connected with fillet head and the tail and forms triangular-section block face, described fillet is connected with cover cylinder inwall upper extreme point, described one end, base and blind plate circumferential edge tangent fixing, the described base other end is connected with cover cylinder inwall, described block face becomes 22.5-30 degree angle with blind plate.
2. a kind of liquid mist demister being applied to rectifying column according to claim 1, is characterized in that: described block face and blind plate are 25 degree of angles.
3. a kind of liquid mist demister being applied to rectifying column according to claim 1, is characterized in that: described swirl vane comprises the hydrophobic skins, stainless steel layer and the hydrophobic primer that cover successively.
4. a kind of liquid mist demister being applied to rectifying column according to claim 1, it is characterized in that: described eddy flow foam removal assembly also comprises adapter, elbow, lacing wire, gusset, described elbow is located at adapter lower end, described adapter is communicated with overflow pipe, described lacing wire is fixedly taken in rectifying column inner walls, and described gusset strengthens fixing conical shell in rectifying column inner walls.
5. a kind of liquid mist demister being applied to rectifying column according to claim 1, it is characterized in that: described cover cylinder top is provided with several emptying drain holes, described emptying drain hole and submerged soil are uniformly at intervals in cover cylinder top.
6. a kind of liquid mist demister being applied to rectifying column according to claim 1, it is characterized in that: described guide ring comprises the first half hoop plate and the second half hoop plate, described half hoop plate is provided with some reinforcements, described half hoop plate side is provided with some pieces of triangle gussets and is connected gusset, described connection gusset is symmetrically set in triangle gusset both sides, described dowel and triangle muscle junction are provided with guide pipe and lead, and the first described half hoop plate is connected by screw bolt and nut with the second half hoop plate.
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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899862.7A CN105413317B (en) | 2015-12-09 | 2015-12-09 | Liquid mist demister applied to rectifying column |
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| CN105413317A true CN105413317A (en) | 2016-03-23 |
| CN105413317B CN105413317B (en) | 2017-12-12 |
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| 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 |
| CN110913972A (en) * | 2017-08-01 | 2020-03-24 | 阿法拉伐股份有限公司 | Scrubber for cleaning gases |
| 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 |
| CN117379807A (en) * | 2023-10-11 | 2024-01-12 | 湖北圣灵科技有限公司 | Pyran production system for glutaraldehyde synthesis |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN117379807A (en) * | 2023-10-11 | 2024-01-12 | 湖北圣灵科技有限公司 | Pyran production system for glutaraldehyde synthesis |
| CN117379807B (en) * | 2023-10-11 | 2024-03-12 | 湖北圣灵科技有限公司 | Pyran production system for glutaraldehyde synthesis |
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| Publication number | Publication date |
|---|---|
| CN105413317B (en) | 2017-12-12 |
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