WO1997047372A1 - Abscheider zum abscheiden von flüssigkeiten, insbesondere von schadstoffen, aus einem gasstrom - Google Patents
Abscheider zum abscheiden von flüssigkeiten, insbesondere von schadstoffen, aus einem gasstrom Download PDFInfo
- Publication number
- WO1997047372A1 WO1997047372A1 PCT/EP1997/002971 EP9702971W WO9747372A1 WO 1997047372 A1 WO1997047372 A1 WO 1997047372A1 EP 9702971 W EP9702971 W EP 9702971W WO 9747372 A1 WO9747372 A1 WO 9747372A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- central
- separator according
- openings
- separator
- Prior art date
Links
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
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- 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
Definitions
- the present invention relates to a separator for separating liquids, in particular pollutants, such as oil mist, from a gas flow, which has a channel system made up of surface elements, through which the gas flow is guided from an inlet side to an outlet side, the surface elements partly be flown to.
- pollutants such as oil mist
- liquids in the form of liquids which are finely dispersed in the exhaust air, represent a particular problem, since, due to the low surface tension and cohesion, the smallest -Droplets (fluid particles) change shape and size.
- Such liquids cannot be separated from the exhaust air with conventional particulate filters, for example nonwovens, since liquids clog such filters and thus reduce the air volume flow.
- liquids oil mist is of particular importance, since due to their high viscosity they cause filter clogging.
- a special separator of the type mentioned at the outset is known, as described for example in DE-A1 41 31 988.5.
- This separator is constructed from plate-shaped, cross-flow, elongated elements which have an X-shape in cross section.
- Several such profile parts are arranged next to one another, with the arms or free legs nested one inside the other.
- inlet channels and outlet channels are formed over the length of the profiles or the arms of the profiles.
- the arms of the respectively adjacent X-profiles result in an elongated chamber which initially widens from the inlet side and then narrows towards the outlet side or the outlet channel again.
- a separator constructed from such profiles has proven itself in use. However, the problem arises here that if the gas flow is not guided exactly 90 ° to the profile axis, the degree of cleaning deteriorates considerably (approximately by 60%). This means that large elements are necessary.
- This separator can only be used for droplet sizes (fluid particles)> 3.0 ⁇ m. In addition, droplets which have separated out are entrained at very high flow velocities of the gas stream.
- DE 40 16 582 proposes building a cross-flow separator from profile elements which have a wave shape in cross section. These profiles, for example with four U-shaped opening areas in each case, are arranged with their open sides opposite one another and slightly spaced apart such that the free legs of the profile cross sections interlock; the opposing profiles are each offset from one another.
- a flow inlet slot is formed between two adjacent profiles, with a web of the opposite profile being aligned in the center. The gas flow entering through the slot is divided by this web, in order then to enter the U-shaped recess lying to the left and right of this web.
- this depression the gas flow is redirected and directed to the opposite profile cross section of the entry-side profile part, there in turn deflected and directed back to the exit side profile cross section.
- Such a deflection of the gas flow between the mutually offset and opposite U-shaped depressions can take place several times. After this multiple deflection, the gas flow then emerges from a flow outlet channel which is formed between two profile cross sections on the outlet side. Because the gas flow with the liquid particles contained therein impacts the walls of the profile cross sections, the liquid is deposited on the wall surfaces, which then runs down under the force of gravity on the wall surfaces and can be collected at the end of the profiles.
- the present invention is based on the object of creating a separator which, despite a simple construction, has a complex chamber system and which is particularly suitable for also separating liquid particles, in particular oil mist particles, with a size in the range from 1 to 3 ⁇ m.
- a separator of the known type in that at least three chambers are formed through which the gas stream flows successively, the central central chamber being tubular and the inlet chamber and the outlet chamber at least partially the central chamber enclose in radial direction. Due to this construction, tubular components can be used which can be produced, for example, from thin sheet metal or thin plastic parts.
- tubular, middle chamber (semi) shell-shaped parts are then arranged at a distance from the outer wall of the middle chamber, so that between the outer wall of the tubular part forming the central chamber and the half-shell, a space which is in the radial direction to the axis of the tubular part of the middle chamber is formed, which is divided so that, seen in relation to the middle chamber, an inlet chamber and an outlet chamber are partitioned.
- the gas flow is introduced via inlet openings, which are provided in the wall part delimiting the inlet chamber to the outside, where the gas flow can expand and strong turbulences arise.
- the gas flow is transferred from the inlet chamber via connecting openings into the central chamber, where a renewed expansion takes place behind the connecting openings in the central chamber, which in turn causes a strong swirl.
- the gas flow is then transferred from the middle chamber into the outlet-side chamber via corresponding connection openings to the outlet chamber. With appropriate dimensioning of the outlet chamber and the connecting openings, the gas flow is expanded again, which then leaves the outlet chamber via outlet openings in the outer wall. Due to the strong turbulence of the gas flow in the three chambers, there is a strong interaction of the gas flow loaded with liquid particles with the respective chamber walls, which results in a strong precipitation of the liquid particles on the chamber walls. Due to the triple chamber system that flows through the gas flow, a multi-stage cleaning is achieved.
- the central chamber can be formed by a tubular part. Openings are preferably formed in this tube at opposite areas, each of which forms the connection openings between the inlet chamber and the middle chamber within this tube and the middle chamber and the outlet chamber. If such openings require profiling, for example through a flanged edge, in order to reinforce a nozzle-like effect of the gas flow into the respective chamber and to produce a tear-off effect when flowing from the chamber, the inner tube can be composed of two half-shell elements . With regard to such half-shell elements, an outwardly bent edge is preferably formed on the free longitudinal edges, preferably formed from thin sheet metal, which then offers a simple possibility of connecting the two half-shells to one another. At the same time, these bent edges, if they protrude in the radial direction to the axis of the tubular middle chamber, can form the end of the inlet chamber or the outlet chamber, as seen in the circumferential direction.
- the tube segments which delimit the inlet chamber and / or the outlet chamber on the radial outside thereof are preferably arranged concentrically with one another.
- inlet openings are made at the inlet chamber and several outlet openings as well as several connection openings at the outlet chamber, which each connect the inlet chamber and the outlet chamber to the central central chamber.
- the flow rate can be adjusted via the size of the respective openings.
- Such openings are preferably aligned along the longitudinal plane that runs through the axis of the inner tube.
- the respective openings lying one behind the other in the direction of flow, viewed perpendicular to the axis of the inner tube should be arranged offset to one another, so that the individual openings do not form an immediate flow path from the inlet side to the outlet side. Rather, a labyrinth-like flow path is generated by an offset from the inlet side to the outlet side.
- the openings preferably have a length in the direction of the axis of approximately 40 mm; the width is about 8 mm.
- the entire arrangement of the separator is constructed symmetrically to the longitudinal axis.
- the inlet chamber and / or the outlet chamber surround the middle chamber over an angular segment between 90 ° and 180 °, preferably about 180 °.
- the entire circumferential area around the tubular middle chamber is used for these inlet and outlet chambers.
- An essential aspect of the separator according to the invention is the structure in the form of three successive chambers, ie the inlet chamber, the central chamber and the outlet chamber, through which the gas stream must flow in succession.
- two further middle chambers are provided in the separator described above, which partially enclose the central middle chamber in the radial direction on opposite sides, to be precise accordingly the type of construction of the inlet chamber and the outlet chamber, so that these further central chambers are each arranged between the inlet and the outlet chamber.
- the efficiency of the separator can be increased by filling a gas-permeable agglomerate into the central chamber (s) through which the gas flow passes.
- the liquid particles of 0.3 ⁇ m and less are deposited on this agglomerate.
- a metal knitted fabric / knitted fabric is particularly suitable, which is adjustable in terms of its gas permeability.
- materials can be selected which are insensitive to aggressive gases.
- an oval cross section is also preferred.
- Such a cross section is oriented with respect to the main flow direction so that the large semi-axis of the oval cross section runs perpendicular to the main flow direction. This achieves a wide space transverse to the main flow direction with which the gas flow enters the central chamber, so that a large expansion area is achieved in the area of the central chamber.
- the middle chamber should have an average diameter of 15 mm to 30 mm, preferably a diameter of about 20 mm.
- an average width of the inlet chamber and / or the outlet chamber, specifically in the radial direction to the axis of the central chamber is chosen from 15 mm to 25 mm, preferably approximately 20 mm.
- the individual openings of the rows of openings should have an average diameter of about 6 to 8 mm with respect to the dimensioning of the middle chamber and / or the entry and exit chamber given above, preferably with a flanged edge, the flanging on the opening is directed towards the upstream side.
- a unit according to the invention of a single separator has been described above, which can be constructed very simply from tubular elements.
- a large-area separator arrangement can be composed of a large number of such individual separators, in that these individual separators are joined to one another with the axes of the tubular central chambers running parallel to one another.
- the individual axes of the individual separators are preferably oriented in a common plane.
- the individual separators can be arranged directly abutting one another with their outer walls.
- the entry and / or exit chambers can be formed using corrugated sheets by connecting two corrugated sheets to the troughs one above the other, so that a large number of tubes of approximately circular cross section are formed.
- FIG. 1A shows a cross section of a separator arrangement, which is composed of three individual separators, cut perpendicular to the longitudinal axis of the central chamber, the two outer individual separators being only indicated,
- Figure 1B shows the illustration of Figure 1A in an approximately scale
- FIG. 2 shows a top view of the separator arrangement of FIGS. 1A or 1B from the direction of the arrow II in FIG. 1,
- FIG. 3 shows a section along the section line III-III in FIG. 1,
- FIG. 4 shows a representation corresponding to FIG. 1B, an aggomerate being filled into the middle chamber of the middle separator unit,
- FIG. 5 shows a sectional view corresponding to FIG. 1B, the arrangement of FIG. 1B being modified such that two further central chambers are provided, and
- FIG. 6 shows a further cross section with a cross-sectional configuration of the inlet, middle and outlet chambers that is different from the embodiments shown in FIGS. 1 to 5.
- the separator arrangement is composed of three tubular separator units 1.
- each separator unit 1 has an inlet chamber 2, a middle chamber 3 and an outlet chamber 4, corresponding to the middle representation of the figures.
- the middle chamber 3 has a circular cross-section and is composed of two half-shells 5 which have flanged edge surfaces 6 pointing radially outwards. By means of these edge surfaces 6, these half-shells 5 are connected to one another via connecting elements (not shown).
- the gas stream to be cleaned is fed into the separator arrangement via inlet openings 9.
- the inlet openings 9 are provided running along the axis 7, in the form of elongated holes which each extend along the axis 7 with their longitudinal extent.
- Each inlet opening 9 has an edge 10 crimped towards the inflow side, ie towards the outside, in order to achieve a nozzle-like effect and thus initially a directed flow of the gas stream flowing into the inlet chamber 2.
- the gas flow expands into the region of the inlet chamber which widens to the left and to the right with strong swirling effects, so that an intensive contact of the gas stream laden with liquid is brought into contact with the inner walls of the inlet chamber.
- the openings 9 have a length, designated by the reference numeral 26 in FIG. 2, of approximately 20 mm, the width is approximately 8 to 10 mm.
- FIG. 3 shows, seen perpendicular to the axis 7, the staggered arrangement of the respective rows of openings of the inlet openings 9, the inlet-side connection openings 11, the outlet-side connection openings 12 and the outlet openings 13 creates a labyrinthine flow path through the flow arrows 14 indicated, reached.
- this labyrinth-like flow path in addition to the large expansion of the inlet chamber 2 and the outlet chamber 4 and the middle chamber 3 transversely to the flow direction, an intensive interaction of the gas flow with the respective walls of the chambers 2, 3 and 4 is achieved.
- an agglomerate 16 in the form of a knitted metal or knitted metal fabric or else is placed in the central chamber 3 Form filled with metal wool, through which the gas flow must pass.
- this agglomerate although materials other than those mentioned above can be used, comparable to the effect achieved on the walls of the individual chambers, liquid carried along by the gas stream is precipitated so that it then runs down to the lower end of the middle chamber 3 and can be disposed of. With this arrangement, liquid particles with sizes from 0.3 ⁇ m can be separated.
- FIG. 6 Another embodiment of the separator unit 1 is shown in the cross-sectional view in FIG. 6.
- the central chamber 3 ' shown there is one oval cross-section, the large semiaxis of this cross-sectional profile running perpendicular to the plane 15.
- This central chamber 3 ' can be formed by a correspondingly dimensioned tube 20 with an oval cross section. If necessary, this tube 20 with an oval cross section can be composed of two half-shells in order to be able to produce the respective connecting openings 11, 12 with their flanged edges 10 more easily. In addition, this results in an easy cleaning option if the separator can be divided in the middle.
- the tube 20 with an oval cross section is inserted into an outer tube 21 which has an inner diameter which corresponds to the outer diameter of the oval tube 20 along the large semi-axis.
- the three-chamber system can be constructed from two tubes, ie the oval tube 20 and the outer tube 21. Due to the relatively large width of the central chamber 3 'perpendicular to the plane 15 or the main flow direction, two inlet-side connection openings 11 and outlet-side connection openings 12 running at a distance from one another and parallel to the axis 7 are provided, which in turn are rows individual openings can act.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97925062A EP0904142A1 (de) | 1996-06-10 | 1997-06-09 | Abscheider zum abscheiden von flüssigkeiten, insbesondere von schadstoffen, aus einem gasstrom |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19623177.9 | 1996-06-10 | ||
DE1996123177 DE19623177C2 (de) | 1996-06-10 | 1996-06-10 | Abscheider zum Abscheiden von Flüssigkeiten, insbesondere von Schadstoffen, aus einem Gasstrom |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997047372A1 true WO1997047372A1 (de) | 1997-12-18 |
Family
ID=7796570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/002971 WO1997047372A1 (de) | 1996-06-10 | 1997-06-09 | Abscheider zum abscheiden von flüssigkeiten, insbesondere von schadstoffen, aus einem gasstrom |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0904142A1 (de) |
CA (1) | CA2257878A1 (de) |
DE (1) | DE19623177C2 (de) |
WO (1) | WO1997047372A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0953559A1 (de) * | 1998-04-30 | 1999-11-03 | Celanese GmbH | Verbesserte Trennung des Katalysators bei einem Verfahren zur Oxidation eines Reaktionsgases |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB334200A (en) * | 1929-05-24 | 1930-08-25 | Henry Hocking | Improvements in apparatus for separating liquids from fluids containing same |
GB496204A (en) * | 1937-05-27 | 1938-11-28 | Frederick Heather | Apparatus for separating oil and other liquids from gases |
US2689623A (en) * | 1952-05-28 | 1954-09-21 | Carl L Schebler | Apparatus for separating liquid entrained or carried by a gas or vapor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8700012U1 (de) * | 1987-01-01 | 1987-03-26 | Gutermuth Sen., Paul, 6456 Langenselbold | Abscheider |
DE4016582A1 (de) * | 1990-05-23 | 1991-11-28 | Rentschler Reven Lueftungssyst | Abscheider fuer fluessigkeiten aus einem gasstrom, insbesondere fuer oelnebel |
DE4131988C2 (de) * | 1991-09-26 | 1995-05-11 | Rentschler Reven Lueftungssyst | Abscheider für Flüssigkeiten aus einem Gasstrom, insbesondere für Ölnebel |
-
1996
- 1996-06-10 DE DE1996123177 patent/DE19623177C2/de not_active Expired - Fee Related
-
1997
- 1997-06-09 CA CA 2257878 patent/CA2257878A1/en not_active Abandoned
- 1997-06-09 EP EP97925062A patent/EP0904142A1/de not_active Withdrawn
- 1997-06-09 WO PCT/EP1997/002971 patent/WO1997047372A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB334200A (en) * | 1929-05-24 | 1930-08-25 | Henry Hocking | Improvements in apparatus for separating liquids from fluids containing same |
GB496204A (en) * | 1937-05-27 | 1938-11-28 | Frederick Heather | Apparatus for separating oil and other liquids from gases |
US2689623A (en) * | 1952-05-28 | 1954-09-21 | Carl L Schebler | Apparatus for separating liquid entrained or carried by a gas or vapor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0953559A1 (de) * | 1998-04-30 | 1999-11-03 | Celanese GmbH | Verbesserte Trennung des Katalysators bei einem Verfahren zur Oxidation eines Reaktionsgases |
US6140544A (en) * | 1998-04-30 | 2000-10-31 | Celanese Gmbh | Process for preparing acetaldehyde from ethylene and oxygen |
KR100589294B1 (ko) * | 1998-04-30 | 2006-06-14 | 셀라네제 쉐미칼스 오이로페 게엠베하 | 에틸렌과 산소로부터 아세트알데히드를 제조하기 위한 개선된 방법 |
Also Published As
Publication number | Publication date |
---|---|
EP0904142A1 (de) | 1999-03-31 |
DE19623177C2 (de) | 1999-03-11 |
DE19623177A1 (de) | 1997-12-11 |
CA2257878A1 (en) | 1997-12-18 |
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