EP2040816A1 - Separateur de particules contenues dans un courant gazeux, notamment de particules solides et/ou liquides et/ou pateuses - Google Patents
Separateur de particules contenues dans un courant gazeux, notamment de particules solides et/ou liquides et/ou pateusesInfo
- Publication number
- EP2040816A1 EP2040816A1 EP07731475A EP07731475A EP2040816A1 EP 2040816 A1 EP2040816 A1 EP 2040816A1 EP 07731475 A EP07731475 A EP 07731475A EP 07731475 A EP07731475 A EP 07731475A EP 2040816 A1 EP2040816 A1 EP 2040816A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- separator according
- particle separator
- particles
- gas stream
- 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.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims abstract description 57
- 239000007787 solid Substances 0.000 title description 10
- 239000007788 liquid Substances 0.000 title description 6
- 235000011837 pasties Nutrition 0.000 title description 5
- 239000004744 fabric Substances 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000003925 fat Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
Definitions
- the present invention relates to a particle separator contained in a gaseous stream.
- It relates in particular to a separator for removing particles in liquid and / or solid and / or pasty form of such a stream.
- the invention is more particularly applicable to the elimination of fat particles carried by a gas stream coming from food service or food processing plants without thereby eliminating all other separations, such as the separation of liquid particles which are present. in a gaseous stream resulting from releases from the chemical or mechanical industry.
- compliance with the hygiene and safety standards entails the need to capture the gas stream emitted by the restoration operations so as to eliminate, to a large extent, the solid and / or liquid particles and / or pasty it contains.
- this stream generally contains pasty fatty substances, fumes as well as combustion gases with solid particles, and vapors containing pollutants in liquid form. This can be detrimental to the exhaust system components of this gas stream and the environment as well as to hygiene and fire safety. Consequently, the elimination of all these harmful elements is necessary or even essential before the discharge of the gaseous stream into the atmosphere.
- EP 0 137 956, particle separators which are formed of an enclosure open at both ends and in which are placed a multiplicities of curved channels substantially parallel to each other. These channels are arranged in the direction of flow of the gas stream between the two open ends and have a radius of curvature from one end to the other end. These channels are generally delimited by solid vertical plates each having the same curvature and which are arranged equidistant from each other.
- the particle-laden gas stream enters through one of the ends of the enclosure, travels along the channels and exits through the other end of this enclosure.
- the gas stream follows the curvature of the channels and the particles it contains are subjected to a centrifugal force resulting from the circulation of this current in the curvature of the channels.
- the particles which are of a greater weight than the molecules of the gaseous current, leave the general direction of circulation of the current and strike the solid wall of the channel which cuts their trajectory.
- the particles are slowed down and fall by gravity down the channel and therefore the enclosure, which may include a discharge port of these particles.
- the particles which collide with the solid wall of the channel, bounce on this wall to be re-entrained by the gas stream.
- the gas stream leaving the enclosure is insufficiently rid of particles.
- the particles and more particularly the fat particles
- the present invention proposes to overcome the drawbacks mentioned above by means of a simple and inexpensive design separator whose efficiency is greatly improved over those of the prior art.
- the present invention relates to a separator of particles contained in a gas stream comprising at least one module comprising an enclosure with an inlet of the gas stream to be treated and an outlet of the treated gas stream and a plurality of curved channels. disposed in the chamber between this inlet and this outlet, characterized in that at least a portion of the channel surface comprises a permeable wall.
- the wall may comprise a grid, a perforated sheet, a fabric, a nonwoven fabric.
- the porosity of the wall may be 10 to 98% while its thickness may be between 0.04mm and 10mm.
- the wall may consist of metallic material.
- This permeable wall can be electrically conductive.
- the section of the constituent elements of the wall may be from 1 ⁇ m 2 to 2500 ⁇ m 2 .
- the wall may comprise a support frame.
- the support frame may include bars or a frame.
- the separator can be applied to the removal of particles carried by a gaseous stream coming from catering facilities or agri-food industries.
- the separator can also be applied to the removal of particles carried by a gaseous stream coming from installations of the chemical or mechanical industry.
- FIG. 1 shows schematically a front view of the separator according to the invention
- FIG. 2 illustrates a section of the separator along line AA in FIG.
- FIG. 3 is a partial perspective view of a portion of an exemplary embodiment of the separator according to the invention corresponding to the zone S of FIG. 2.
- the separator here in the form of a single separation module 10, comprises an enclosure 12 of rectangular parallelepipedal shape with two solid horizontal faces 14 and 16 that are substantially parallel and at a distance from one of the other, two solid vertical faces 18 and 20 also substantially parallel and at a distance from each other, an open face 22 for the inlet of a gaseous stream (arrows G of FIG. 2) to be treated and another face 24, arranged opposite the inlet 22, for the output of the gaseous stream freed of a majority of the particles it contained.
- the lower face 16 of the enclosure may also comprise a particle discharge orifice 26 which is preferably located in the middle region of this face and which is connected to a discharge pipe 28.
- these channels are vertical and preferably have a substantially identical width L. These channels extend over the entire depth P of the enclosure from its inlet 22 to its outlet 24 and have a height that corresponds substantially to the height H of this enclosure. These channels have a direction such that they are in the same direction of flow as that of the gas stream between the inlet 22 and the outlet 24.
- These channels are delimited by vertical walls 32 substantially parallel to each other and equidistant L from each other. These walls all have the same radius of curvature R located in a horizontal plane substantially parallel to that of a plane passing through the section AA of FIG. 1. This thus makes it possible to form curved channels in the same direction and whose concavity is located to the left of these figures.
- these curved channels are delimited (considering FIG. 1) horizontally, upwards and downwards, by the upper 14 and lower 16 faces of the enclosure and vertically, on the left and right, by the walls 32. These channels therefore have a developed length D greater than the depth P of the enclosure.
- This permeability results from the constitution of these walls which may be in the form of a grid (or micro-grid), perforated sheet, woven or non-woven fabric and whose constituent material is metallic, synthetic or natural.
- these walls have a thickness E of between 20 .mu.m to 10 mm and more particularly a thickness of 0.5 mm to 10 mm for fabric walls and 20 .mu.m to 1 mm for the walls in the form of a grid or perforated sheet.
- the porosity of these walls oscillates from 10 to 98% with a maximum porosity of 80% for the walls in the form of grid or perforated sheet and 98% for the walls in fabric.
- the cross-section of the constituent elements of the wall 32 which may be wires or straps, is from about 1 ⁇ m 2 to about 2500 ⁇ m 2 .
- these walls when they are made of a metallic material, they can be subjected to an electric current, which makes it possible to improve the separation of the particles from the gas stream by electrostatic or electromagnetic effect.
- the vertical edges of the first wall 32 on the right are adjacent to the vertical face 20 of the enclosure and the space between the vertical edges of the last wall 32 to the left and the face vertical 18 is obstructed by a mask 34.
- the gas stream G arrives at the inlet 22 of the chamber and enters the channels 30i, 3O 2, 3U3, ... n 3O.
- the applicant limits his explanations relating to the operation of the separator only to the first two channels 30i, and 302 considered to the right of Figures 1 and 2.
- the gaseous current follows the curved path of these channels in a multiplicity of gaseous currents as indicated by the arrows Ci and C 2 of FIG. 2.
- the particles contained in each stream are subjected to centrifugal force. This force has the effect of separating the particles from the path of the gas stream Ci flowing in the channel 30 1 and deflecting them along the arrows Fi towards the wall 32 which is in the path of these particles.
- the other part of the particles passes through this same wall and is introduced into the path C 2 of the gas stream flowing in the neighboring channel 30 2 .
- These particles are mixed with those already present in this stream and are also subjected to the centrifugal force whose effects have been described above so as to separate the particles from the gas stream C 2 and to the deflect according to the arrows F 2 towards the wall 32 which is in the path of the deviated particles.
- the particles will be separated and removed from each gas stream depending on the path of this gas stream along the channels.
- the overall gas stream resulting from the meeting of all the currents flowing in the channels, is largely free of the particles that it originally contained.
- this separator may have a height H between 40mm and 500mm, a depth P between 30mm and 500mm, a dimension for the inlet 22 between 40mm and 800mm with a pitch between the permeable walls of 5mm to 20mm and a radius curvature R from 20mm to 300mm.
- the separator used a single module which had a height H of 400mm, a depth P of 240mm, a dimension of 170mm for the inlet 22 and the outlet 24, a pitch of 13mm between the walls.
- the permeable walls 32 were expanded metal grids with a radius of curvature R of 240 mm.
- the pressure drop (in Pascal - Pa -) was 42 Pa for the flow rate of 832m 3 / h and 82 Pa for the flow rate of 1180m 3 / h.
- FIG. 3 shows a portion of the separator with an exemplary embodiment of permeable walls.
- the wall 32 is made of a metal grid 36 having a degree of relative flexibility to achieve a curvature along the radius R.
- This grid consists of an assembly of wires or metal strips 38 which, in the example considered, allows to define meshes 40 to four sides.
- This grid has a height dimension which corresponds to the height H of the enclosure and a dimension in developed length which corresponds to the length D mentioned in connection with FIG. 2.
- the vertical edges 42 of the grid are fixed in an armature of support which comprises rigid vertical bars 44 whose length is greater than the height H of the enclosure so that the free ends 46 of these bars protrude at the top and bottom of the grid.
- the horizontal faces 14 and 16 of this chamber carry in the vicinity of each longitudinal edge passages 48 whose dimensions are adapted to receive the ends 46 of the bars 44.
- the passages 48 of one of the 14 faces are placed opposite the passages 48 the other 16 faces and the distance between the passages 48 on the faces corresponds to the length L of the channels while the distance between the passages considered between the longitudinal edges of each face corresponds to the depth P of the channels.
- the free ends 46 of one of the bars 44 are introduced into the passages 48 facing one of the longitudinal edges of the faces 14 and 16.
- a force is then exerted on the other of bars so that the grid curves along the radius of curvature R until the dimension of the wall corresponds to the depth P of the enclosure.
- the ends 46 of this other bar are then introduced into the passages 48 facing each other in the longitudinal edges of the faces 14 and 16 (not shown).
- the separator consists of a single module 10 and it can be envisaged to use a separator consisting of an assembly of modules 10.
- modules which can be of dimensions and of identical constitution of each other, can be assembled to each other in three directions (height and / or width and / or depth) so as to form this separator.
- the permeable wall comprises a woven or non-woven fabric
- a support frame of this fabric in the form of a curved frame according to the radius of curvature R on which this fabric will be fixed by all known means, such as gluing, stapling, etc.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0604624A FR2901151B1 (fr) | 2006-05-19 | 2006-05-19 | Separateur de particules contenues dans un courant gazeux, notamment de particules solides et/ou liquides et/ou pateuses. |
PCT/FR2007/000840 WO2007135279A1 (fr) | 2006-05-19 | 2007-05-15 | Separateur de particules contenues dans un courant gazeux, notamment de particules solides et/ou liquides et/ou pateuses |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2040816A1 true EP2040816A1 (fr) | 2009-04-01 |
Family
ID=37669640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07731475A Withdrawn EP2040816A1 (fr) | 2006-05-19 | 2007-05-15 | Separateur de particules contenues dans un courant gazeux, notamment de particules solides et/ou liquides et/ou pateuses |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2040816A1 (fr) |
FR (1) | FR2901151B1 (fr) |
WO (1) | WO2007135279A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996463B1 (fr) * | 2012-10-10 | 2015-12-18 | Inst Nat De Recherche En Sciences Et Technologies Pour L'environnement Et L'agriculture Irstea | Ensemble de piegeage de particules en suspension dans un fluide |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3616623A (en) * | 1970-01-19 | 1971-11-02 | Laurance S Reid | Mist eliminator |
CA1106777A (fr) * | 1977-05-12 | 1981-08-11 | Bernard J. Lerner | Extraction des composants indesirables en presence dans un gaz |
DE69533242T2 (de) * | 1994-04-14 | 2004-11-04 | Institut Français du Pétrole, Rueil-Malmaison | Verfahren zur Entfernung von Teilchen aus einem Fluidstrom |
-
2006
- 2006-05-19 FR FR0604624A patent/FR2901151B1/fr not_active Expired - Fee Related
-
2007
- 2007-05-15 WO PCT/FR2007/000840 patent/WO2007135279A1/fr active Application Filing
- 2007-05-15 EP EP07731475A patent/EP2040816A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007135279A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2901151A1 (fr) | 2007-11-23 |
FR2901151B1 (fr) | 2010-03-12 |
WO2007135279A1 (fr) | 2007-11-29 |
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Legal Events
Date | Code | Title | Description |
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AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TECHNIQUES AERAULIQUES POUR LA MAITRISE DE LA QUAL Owner name: IFP ENERGIES NOUVELLES |
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17Q | First examination report despatched |
Effective date: 20110825 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20111201 |