DE1442650C3 - Filter element for removing oil droplets from compressed air - Google Patents
Filter element for removing oil droplets from compressed airInfo
- Publication number
- DE1442650C3 DE1442650C3 DE1442650A DE1442650A DE1442650C3 DE 1442650 C3 DE1442650 C3 DE 1442650C3 DE 1442650 A DE1442650 A DE 1442650A DE 1442650 A DE1442650 A DE 1442650A DE 1442650 C3 DE1442650 C3 DE 1442650C3
- Authority
- DE
- Germany
- Prior art keywords
- filter element
- compressed air
- oil droplets
- filter
- removing oil
- 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.)
- Expired
Links
- 239000002594 sorbent Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 4
- 241000723346 Cinnamomum camphora Species 0.000 description 4
- 229960000846 camphor Drugs 0.000 description 4
- 229930008380 camphor Natural products 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 229920006266 Vinyl film Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- QVCGXRQVUIKNGS-UHFFFAOYSA-L cobalt(2+);dichloride;hydrate Chemical compound O.Cl[Co]Cl QVCGXRQVUIKNGS-UHFFFAOYSA-L 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
-
- 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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
- B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
- B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Separation Of Gases By Adsorption (AREA)
- Gas Separation By Absorption (AREA)
- Drying Of Gases (AREA)
- Water Treatment By Sorption (AREA)
Description
Die Erfindung betrifft ein Filterelement zum Entfernen von Öltröpfchen aus Druckluft, das ein festes hydrophobes und oleophiles Sorptionsmittel enthält. Derartige Filterelemente sind beispielsweise aus der britischen Patentschrift 8 29 413 bekannt. Als Sorptionsmittel wird dort die Verwendung von Polyalkylenpulver vorgeschlagen, über welches die zu reinigenden Gasströme geleitet werden.The invention relates to a filter element for removing oil droplets from compressed air, which is a solid hydrophobic and contains oleophilic sorbent. Such filter elements are for example from the British Patent 8 29 413 known. As a sorbent there is the use of polyalkylene powder proposed over which the gas streams to be cleaned are passed.
Aus der US-PS 25 28 539 ist ein Luftfilter zur Absorption von Feuchtigkeit bekannt. Bei diesem Filter wird die Feuchtigkeit zunächst durch entsprechende Umlenkung des Luftstromes mechanisch vorentfernt, worauf der Luftstrom mit der noch vorhandenen Restfeuchtigkeit ein Filterelement passiert, welches aus einem geeigneten Sorptionsmittel besteht. Das Sorptionsmittel ist mit wasserfreiem Kobaltchlorid imprägniert und dadurch blau gefärbt. Bei Überschreiten des Hydratgleichgewichtes bildet sich rosa gefärbtes Kobaltchloridhydrat. From US-PS 25 28 539 an air filter for absorbing moisture is known. With this filter the moisture is first removed mechanically by redirecting the air flow, whereupon the air flow with the remaining moisture passes through a filter element, which is made of a suitable sorbent. The sorbent is impregnated with anhydrous cobalt chloride and thereby colored blue. When the hydrate equilibrium is exceeded, pink cobalt chloride hydrate is formed.
Aus der deutschen Patentschrift 8 80 956 ist ein für analytische Zwecke bestimmtes hochempfindliches Gasanzeigeröhrchen bekannt, welches zum analytischen Nachweis von organischen Lösungsmitteln, beispielsweise Trichloräthylendämpfen, die in der Absaugluft einer Regenerierungsanlage vorhanden sein können, bestimmt ist. Das Röhrchen ist mit Kampferkristallen gefüllt, die mit einem Überzug von Farbstoffpuder versehen sind. Der Farbstoffpuder färbt die Kampferkristalle infolge seiner geringen Konzentration nur schwach an. Sobald die Kristalle mit lösungsmittelhaltiger Luft in Berührung kommen, bildet sich unter Absorption des Lösungsmittels eine Kampferlösung, die ihrerseits den Farbstoff unter intensiver Verfärbung auflöst. Die hierdurch eintretende Farbvertiefung dient als Anzeigemittel dafür, daß die in das Prüfröhrchen eintretende Luft Lösungsmittel enthielt.The German patent 8 80 956 describes a highly sensitive one intended for analytical purposes Gas indicator tube known, which for the analytical detection of organic solvents, for example Trichlorethylene vapors that may be present in the exhaust air of a regeneration system, is determined. The tube is filled with camphor crystals, which are covered with a powder coating are provided. The dye powder colors the camphor crystals due to its low concentration only weakly. As soon as the crystals come into contact with solvent-containing air, it forms with absorption of the solvent, a camphor solution, which in turn intensifies the coloration of the dye dissolves. The resulting color deepening serves as an indicator that the in the test tube incoming air contained solvent.
Prüfröhrchen dieser Art sind wegen ihrer hohen Empfindlichkeit für analytische Zwecke gut geeignet. Sie eignen sich aber nicht für den Durchsatz größerer Gasmengen, da sie infolge der sogleich entstehenden Kampferlösung alsbald verstopfen.Detection tubes of this type are well suited for analytical purposes because of their high sensitivity. However, they are not suitable for the throughput of larger amounts of gas, as they are due to the resulting gas Immediately clog the camphor solution.
Dieser Nachteil wird vermieden, wenn im Filterelement zum Entfernen von öltröpfchen aus Druckluft, welches ein festes hydrophobes und oleophiles Sorptionsmittel enthält, erfindungsgemäß in dem festen Sorptionsmittel Teilchen eines in öl löslichen Farbstoffes gleichmäßig verteilt sind.This disadvantage is avoided when in the filter element for removing oil droplets from compressed air, which is a solid hydrophobic and oleophilic sorbent contains, according to the invention in the solid sorbent particles of an oil-soluble dye are evenly distributed.
Kommt ein derartiges Filterelement mit Druckluft in Berührung, welche öltröpfchen enthält, so lösen die Öltröpfchen den öllöslichen Farbstoff auf und vertiefen dabei ihre Farbe beträchtlich. Die so gebildete Farbstoff-in-öl-Lösung wird alsdann vom Sorptionsmittel aufgenommen, wodurch dieses ebenfalls verfärbt wird. Da hierbei dem Luftstrom die in ihm enthaltenen öltröpfchen entzogen werden, kann die Luft nun durch die nachfolgenden Filterschichten strömen, ohne dort eine Veränderung zu bewirken. Dies hat zur Folge, daß sich das Filterelement in Richtung der vorwandernden Ölfront deutlich verfärbt, so daß nicht nur erkannt werden kann, wann der Filter völlig erschöpft ist, sondern an der Lage der vorwandernden Farbstoffront auch der augenblickliche Erschöpfungsgrad des Filters abgeschätzt werden kann.If such a filter element comes into contact with compressed air which contains oil droplets, the oil droplets dissolve the oil-soluble dye and deepen their color considerably. The dye-in-oil solution thus formed is then absorbed by the sorbent, which also changes its color. Since the oil droplets contained in it are withdrawn from the air flow, the air can now pass through the subsequent filter layers flow without causing a change there. This has the consequence that the filter element is clearly discolored in the direction of the advancing oil front, so that not only can be recognized can tell when the filter is completely exhausted, but also by the position of the dye front migrating in front of it instantaneous exhaustion of the filter can be estimated.
Besonders vorteilhaft beim erfindungsgemäß angegebenen Filter ist, daß eine Verstopfung der Filterporen infolge der Sorption des Öles bzw. der gebildeten Farbstoff-in-Öl-Lösung nicht eintritt. Dies ist insbesondere für Filter mit großem Durchsatz wichtig, da bekanntlich der Kapillarradius derartiger Filter mit der vierten Potenz in das Kapillarvolumen und somit auch in das Volumen des das Filter durchströmenden Mediums eingeht. Eine nur geringfügige Veränderung des Kapillarradius infolge Flüssigkeitsbildung würde also sogleich eine erhebliche Herabsetzung des durchzusetzenden Volumens bedingen.It is particularly advantageous in the case of the filter specified according to the invention that clogging of the filter pores does not occur due to the sorption of the oil or the formed dye-in-oil solution. This is particular important for filters with a high throughput, since it is known that the capillary radius of such filters corresponds to the fourth power in the capillary volume and thus also in the volume of the medium flowing through the filter comes in. Only a slight change in the capillary radius as a result of the formation of liquid would therefore immediately require a considerable reduction in the volume to be enforced.
Die Erfindung wird nachstehend an Hand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigtThe invention is described below on the basis of an exemplary embodiment with reference to the drawings explained in more detail. It shows
F i g. 1 einen Schnitt durch eine Reinigungsvorrichtung für strömende Druckluft, welche ein erfindungsgemäßes Filterelement enthält,F i g. 1 shows a section through a cleaning device for flowing compressed air, which is an inventive Contains filter element,
F i g. 2 eine andere Ausführungsform eines Filterelements. F i g. 2 shows another embodiment of a filter element.
Nach F i g. 1 wird die zu reinigende Druckluft in einer quer zur Zeichnungsebene gerichteten Richtung in eine obere Strömungskammer 9 eingeführt. Nach dem Eintritt in die Anlage wird der Luftstrom geteilt und nach rechts und links in den horizontalen Durchlaß 10 geleitet. Der vorstehend beschriebene Luftstrom ist durch den Pfeil 11 angedeutet. An den beiden Enden des horizontalen Durchlasses 10 wird die Luft nach unten in die Rohre 12 geführt. In den Rohren 12 sind Auffangflächen in Form von Bürsten 13 vorgesehen. Diese Auffangflächen dienen dazu, größere Teilchen von im Luftstrom mitgerissenem öl und Wasser bereits aufzufangen und somit die eigentlichen, weiter stromabwärts in der Vorrichtung angeordneten Filterelemente zu entlasten. Am Grunde der Rohre 12 gelangt die Luft in eine untere Strömungskammer 14, von wo aus sie durch ein durchsichtiges Rohr 15 nach oben geleitet wird. Die untere Strömungskammer 14 weist einen Ausfluß 16 auf, an den gegebenenfalls ein Abzugshahn angeschlossen werden kann. Im Rohr 15 sind zusätzliche Aufprallflächen in Form eines Drahtgeflechtes 17 vorhanden, an denen sich größere öl- und Wassertröpfchen ansammeln, die damit aus dem Strörnungsmittelstrom ausgeschieden werden.According to FIG. 1 is the compressed air to be cleaned in a direction perpendicular to the plane of the drawing introduced into an upper flow chamber 9. After entering the system, the air flow is split and passed into the horizontal passage 10 to the right and left. The airflow described above is indicated by arrow 11. At the two ends of the horizontal passage 10, the air is down guided into the tubes 12. In the tubes 12 collecting surfaces in the form of brushes 13 are provided. These collecting surfaces are used to collect larger particles of oil and water that have already been carried away in the air stream to collect and thus the actual, further downstream arranged in the device filter elements to relieve. At the bottom of the tubes 12, the air enters a lower flow chamber 14, from where from it is passed through a transparent tube 15 upwards. The lower flow chamber 14 has an outlet 16 to which a trigger can be connected if necessary. In the tube 15 are additional impact surfaces in the form of a wire mesh 17 available, on which larger oil and Water droplets collect from the fluid flow be eliminated.
Das eigentliche Filterelement 18 besteht vorzugsweise aus einem Sack oder einem durchscheinenden Rohr, in das eine aus pulverförmigem Polyäthylen und eine aus Farbstoffteilchen bestehende Substanz eingefüllt ist. Dieser Sack oder dieses Rohr ist mindestens endseitig strömungsmitteldurchlässig, so daß die Druckluft durch das Filterelement hindurchströmen und in die Ausgangskammer der oberen Stromungskammer 9 gelangen kann, die ihrerseits hinter der Eingangskammer gelegen und deshalb nicht voll sichtbar ist, wie dies in gestrichelten Linien in der F i g. 1 angedeutet ist.The actual filter element 18 preferably consists of a sack or a translucent tube, filled with a substance consisting of powdered polyethylene and a substance consisting of dye particles is. This bag or this tube is at least one end of the fluid permeable, so that the compressed air flow through the filter element and get into the outlet chamber of the upper flow chamber 9 can, which in turn is located behind the entrance chamber and is therefore not fully visible, as shown in dashed lines in FIG. 1 is indicated.
Wie aus F i g. 2 ersichtlich, weist das Element \S:i eine durchsichtige oder wenigstens durchscheinende Seitenwand 20 auf, die zweckmäßigerweise aus einem Vinylfilm besteht. Im übrigen besitzt das Element kreisförmige Stirnwände 21 und 22, die dem Strömungsmit-As shown in FIG. 2, the element \ S: i has a transparent or at least translucent side wall 20, which expediently consists of a vinyl film. In addition, the element has circular end walls 21 and 22, which the flow medium
tel gegenüber durchlässig sind und zweckmäßigerweise aus einem offenporigen Schaumstoff, beispielsweise aufgeschäumtem Polyurethan, bestehen. Die das Filterbett des zylindrischen Elements bildende Packung 23 besteht ebenso wie die Packung des das Reinigungselement bildenen Sackes vorzugsweise ebenfalls aus pulverförmigem Polyäthylen, zwischen dessen Pulverteilchen ein Farbstoff fein verteilt ist. An einem Ende des zylinderförmigen Reinigungselements ist ein Dichtungsring 24 aus Gummi vorhanden, der einen festen Sitz des Elements in dem durchsichtigen Rohr 15 (Fig. ^gewährleistet.tel are permeable and expediently consist of an open-cell foam, for example foamed polyurethane. The filter bed The packing 23 of the cylindrical element forming the same as the packing of the cleaning element exists formed sack preferably also made of powdery Polyethylene, between the powder particles, a dye is finely distributed. At one end of the cylindrical cleaning element, a sealing ring 24 made of rubber is present, which has a solid Seat of the element in the transparent tube 15 (Fig. ^ Guaranteed.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28040563A | 1963-05-14 | 1963-05-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1442650A1 DE1442650A1 (en) | 1968-11-21 |
| DE1442650B2 DE1442650B2 (en) | 1975-04-24 |
| DE1442650C3 true DE1442650C3 (en) | 1976-01-08 |
Family
ID=23072942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1442650A Expired DE1442650C3 (en) | 1963-05-14 | 1964-05-14 | Filter element for removing oil droplets from compressed air |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5024917B1 (en) |
| DE (1) | DE1442650C3 (en) |
| FR (1) | FR1395253A (en) |
| GB (1) | GB1030912A (en) |
| NL (1) | NL6405256A (en) |
| SE (1) | SE302951B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2826237C2 (en) * | 1978-06-15 | 1981-11-19 | Riensch & Held, 2000 Hamburg | Grease filters, in particular for extractor hoods |
| JPS58195050U (en) * | 1982-06-21 | 1983-12-24 | 小型ガス冷房技術研究組合 | gas engine regulator |
| JPS59131952U (en) * | 1983-02-25 | 1984-09-04 | 株式会社日本気化器製作所 | vaporizer |
| DE3808299A1 (en) * | 1988-03-12 | 1989-09-21 | Binzer Papierfab J | Filter for extractor hoods |
| DE19720775A1 (en) * | 1997-05-17 | 1998-11-19 | Mann & Hummel Filter | Device and element for liquid separation in gas flows |
| DE102011108061A1 (en) * | 2011-07-21 | 2013-01-24 | Mann + Hummel Gmbh | Fluid filter assembly and filtering method |
| CN112291547B (en) * | 2020-10-29 | 2022-01-04 | 浙江中烟工业有限责任公司 | Impurity removal system with image recognition function |
-
1964
- 1964-04-30 GB GB18058/64A patent/GB1030912A/en not_active Expired
- 1964-05-06 SE SE5609/64A patent/SE302951B/xx unknown
- 1964-05-11 JP JP39026410A patent/JPS5024917B1/ja active Pending
- 1964-05-12 NL NL6405256A patent/NL6405256A/xx unknown
- 1964-05-12 FR FR974142A patent/FR1395253A/en not_active Expired
- 1964-05-14 DE DE1442650A patent/DE1442650C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6405256A (en) | 1964-11-16 |
| JPS5024917B1 (en) | 1975-08-19 |
| DE1442650A1 (en) | 1968-11-21 |
| SE302951B (en) | 1968-08-12 |
| FR1395253A (en) | 1965-04-09 |
| GB1030912A (en) | 1966-05-25 |
| DE1442650B2 (en) | 1975-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |